Bathymetric Position Index (BPI) Structures Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean

Pacific Islands Fisheries Science Center
Data Set (DS) | ID: 12617 | Published / External
Created: 2012-07-12   |   Last Modified: 2023-08-15

Parent: Geomorphology
Project (PRJ) | ID: 12598

ID: 12617
Data Set (DS)

* Discovery
• First Pass
» Metadata Rubric

Item Identification

* » Title Bathymetric Position Index (BPI) Structures Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean
Short Name BPI Structures
* Status Completed
Creation Date  
Revision Date  
• Publication Date 2018
* » Abstract

Bathymetric Position Index (BPI) Structures are derived for islands and banks across the U.S. Pacific Islands Region from a focal mean analysis on bathymetry and slope, and were created using the Benthic Terrain Modeler. Cell values represent one of 13 classes in an index of seafloor terrains.

The grids are based primarily on gridded multibeam bathymetry collected aboard NOAA Ships Hi'ialakai and Oscar Elton Sette and aboard R/V AHI (Acoustic Habitat Investigator) from 2003 to 2012 by the PIFSC Ecosystem Sciences Division (ESD). Other sources of available data used to derive BPI Zones for a few locations include estimated depths derived from IKONOS satellite imagery from 2000 to 2002, LIDAR data from 2001 and 2007, and multibeam bathymetry collected in 2001 and 2002.

The BPI Structure grid generated for each location is available via the Pacific Islands Benthic Habitat Mapping Center (PIBHMC) website. The data, maps, layer files, and detailed documentation (more specific than this pacific-wide record) about the data sources and data processing steps used are included in the zip file for each location.
* Purpose

Prepared by the PIFSC Ecosystem Sciences Division (ESD) and funded by the NOAA Coral Reef Conservation Program (CRCP), the data were derived in support of CRCP goals to map all U.S. coral reef ecosystems by developing high-resolution benthic maps to characterize priority reefs and associated habitats. This derivative of bathymetry provides a GIS layer that may be used for benthic and essential fish habitat characterization, and for the study of geologic features. By combining the dataset with bathymetry, backscatter, other derivatives, and in situ data, they collectively compose benthic habitat maps which are designed to be used to understand and predict benthic habitats for different organisms that inhabit coral reef ecosystems.

These maps were made possible with funding from the CRCP, and additional support was received from the NOAA Habitat Blueprint for the West Hawaii Focus Area.
Notes
Other Citation Details

Weiss, A. D. 2001. Topographic positions and landforms analysis (Conference Poster). ESRI International User Conference., San Diego, CA July 9–13. https://www.jennessent.com/downloads/tpi-poster-tnc_18x22.pdf
• Supplemental Information

The source bathymetry data collected and gridded by PIFSC Ecosystem Sciences Division (ESD) are documented and hosted separately on the Pacific Islands Benthic Habitat Mapping Center (PIBHMC) website.
DOI (Digital Object Identifier)  
DOI Registration Authority  
DOI Issue Date  

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category elevation
CoRIS Discovery Thesaurus Geographic Information > Bathymetry
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > geomorphology Mapping
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > Habitat Mapping
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetric Position Index Structures
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs
CRCP Project 467
CRCP Project Benthic Habitat Mapping and Characterization in the Pacific Islands Region
CRCP Project Mapping and EcoSpatial Information Products to Support Coral Reef Ecosystem Management in the Pacific Islands Region
NODC DATA TYPES THESAURUS seafloor topography
NODC OBSERVATION TYPES THESAURUS derived products
NODC OBSERVATION TYPES THESAURUS GIS product
NODC PROJECT NAMES THESAURUS Coral Reef Conservation Program
NODC SUBMITTING INSTITUTION NAMES THESAURUS US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division
None Bathymetric Position Index
None BPI
None Coral Reef Ecosystem Division
None Coral Reef Ecosystem Program
None CRED
None CREP
None Ecosystem Sciences Division
None ESD
None Habitat Blueprint
None Habitat Focus Area
None Pacific Islands Benthic Habitat Mapping Center
None Pacific Islands Fisheries Science Center
None PIBHMC
None PIFSC
None Seafloor
   
   
   

Temporal Keywords

Thesaurus Keyword
   
   
   

* Spatial Keywords

Thesaurus Keyword
CoRIS Place Thesaurus COUNTRY/TERRITORY > Northern Mariana Islands > Northern Mariana Islands > Northern Mariana Islands ( CNMI ) (18N146E0000)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > American Samoa (14S170W0000)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Guam > Guam (13N144E0000)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Hawaii Island (19N155W0003)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Brooks Banks (24N166W0002)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > French Frigate Shoals (24N166W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Kure Atoll (28N178W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Northwestern Hawaiian Islands (28N178W0000)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Pearl and Hermes Reef (27N176W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaii > Kauai > Niihau Island (21N160W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Hawaiian Islands (21N157W0027)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Baker Island (00N176W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Howland Island (00S176W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Johnston Atoll (16N169W0001)
CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Wake Atoll (19N167E0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Baker Island > Baker Island (00N176W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands (21N157W0027)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii Island > Hawaii Island (19N155W0003)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Niihau Island > Niihau Island (21N160W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Howland Island > Howland Island (00S176W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Johnston Atoll > Johnston Atoll (16N169W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands (28N178W0000)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Brooks Banks (24N166W0002)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > French Frigate Shoals (24N166W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Kure Atoll (28N178W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Pearl and Hermes Reef (27N176W0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Wake Atoll > Wake Atoll (19N167E0001)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Guam (13N144E0000)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Mariana Archipelago > Northern Mariana Islands ( CNMI ) (18N146E0000)
NODC SEA AREA NAMES THESAURUS Equatorial Pacific Ocean
NODC SEA AREA NAMES THESAURUS Marianas Trench Marine National Monument
NODC SEA AREA NAMES THESAURUS North Pacific Ocean
NODC SEA AREA NAMES THESAURUS NW Pacific
NODC SEA AREA NAMES THESAURUS Pacific Remote Islands Marine National Monument
NODC SEA AREA NAMES THESAURUS Papahanaumokuakea Marine National Monument
NODC SEA AREA NAMES THESAURUS Rose Atoll Marine National Monument
NODC SEA AREA NAMES THESAURUS South Pacific Ocean
None American Samoa
None CNMI
None Commonwealth of the Northern Mariana Islands
None Guam
None Main Hawaiian Islands
None Mariana Islands
None Marianas
None MHI
None Northwestern Hawaiian Islands
None NWHI
None Pacific Remote Island Areas
None PRIA
None West Hawaii
   
   
   

Stratum Keywords

Thesaurus Keyword
Global Change Master Directory SEA FLOOR
   
   
   

Instrument Keywords

Thesaurus Keyword
   
   
   

Platform Keywords

Thesaurus Keyword
   
   
   

Physical Location

• » Organization Pacific Islands Fisheries Science Center
• » City Honolulu
• » State/Province HI
• Country USA
• » Location Description

Data Set Information

* Data Set Scope Code Data Set
• Data Set Type GIS dataset of raster files
• Maintenance Frequency None Planned
Maintenance Note

Updated the 50-m product for Wake Atoll in 2018
» Data Presentation Form Map (digital)
• Entity Attribute Overview

The Bathymetric Position Index (BPI) is a measure of where a referenced location is relative to the locations surrounding it. BPI is derived from a bathymetric dataset using a topographic position index (TPI) modified by Andrew Weiss and applied in the Benthic Terrain Modeler in ArcGIS. The BPI datasets are standardized to the values of the raster data set. A classification dictionary is created to define the number and type of classifications of seafloor characteristics. Values assigned during classification are defined within the classification dictionary and range from 1-13.
Entity Attribute Detail Citation
Entity Attribute Detail URL  
Distribution Liability

While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Data Set Credit PIFSC Ecosystem Sciences Division and funded by the NOAA Coral Reef Conservation Program (and the NOAA Habitat Blueprint for West Hawaii)

Support Roles

» At least one Distributor Org, one Metadata Contact, one Point of Contact, and one Data Steward should be listed.
* » Support Role Data Set Credit
* » Date Effective From 2003
Date Effective To
Organization NOAA Coral Reef Conservation Program (CRCP)
Address 1305 East West Highway 10th Floor
Silver Spring, MD 20910-3281
Email Address  
Phone (301) 713-3155
Fax  
Mobile  
URL https://coralreef.noaa.gov
Business Hours  
Contact Instructions
* » Support Role Data Steward
* » Date Effective From 2018
Date Effective To
Person Acoba, Tomoko S
Address 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address tomoko.acoba@noaa.gov
Phone (808)725-5448
Fax  
Mobile  
URL  
Business Hours 8:00 am - 4:00 pm HST
Contact Instructions

email preferred
* » Support Role Data Steward
* » Date Effective From 2015
Date Effective To 2017
Person Suka, Rhonda
Address 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address rhonda.suka@noaa.gov
Phone (808)725-5494
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions

Email preferred
* » Support Role Distributor
* » Date Effective From 2018
Date Effective To
Person Lichowski, Frances
Address 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address frances.lichowski@noaa.gov
Phone (808)725-5476
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions

email preferred
* » Support Role Distributor
* » Date Effective From 2008
Date Effective To 2017
Person Akridge, Michael W
Address 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address michael.akridge@noaa.gov
Phone (808)725-5483
Fax  
Mobile  
URL  
Business Hours  
Contact Instructions

Email preferred
* » Support Role Metadata Contact
* » Date Effective From 2010
Date Effective To
Person DesRochers, Annette M
Address 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address annette.desrochers@noaa.gov
Phone (808)725-5461
Fax  
Mobile  
URL  
Business Hours 8 am - 5 pm
Contact Instructions

Email preferred
* » Support Role Originator
* » Date Effective From 2003
Date Effective To
Organization Pacific Islands Fisheries Science Center (PIFSC)
Address 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address pifsc.info@noaa.gov
Phone 808-725-5360
Fax  
Mobile  
URL https://www.pifsc.noaa.gov
Business Hours 8:00 a.m. - 4:30 p.m.
Contact Instructions
* » Support Role Point of Contact
* » Date Effective From 2016
Date Effective To
Person DesRochers, Annette M
Address 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address annette.desrochers@noaa.gov
Phone (808)725-5461
Fax  
Mobile  
URL  
Business Hours 8 am - 5 pm
Contact Instructions

Email preferred
* » Support Role
* » Date Effective From
Date Effective To
* » Contact
* Contact Instructions
* » Support Role
* » Date Effective From
Date Effective To
* » Contact
* Contact Instructions
* » Support Role
* » Date Effective From
Date Effective To
* » Contact
* Contact Instructions

Extents

Currentness Reference Ground Condition

Extent Group 1

Extent Description

Main Hawaiian Islands, including West Hawaii and Niihau.

Extent Group 1 / Geographic Area 1

* » W° Bound -156.100504
* » E° Bound -155.822838
* » N° Bound 20.061727
* » S° Bound 19.772429
* » Description

West Hawaii

Extent Group 1 / Geographic Area 2

* » W° Bound -160.292237
* » E° Bound -160.01701
* » N° Bound 22.056916
* » S° Bound 21.729768
* » Description

Niihau

Extent Group 1 / Vertical Extent

EPSG Code
Vertical Minimum
Vertical Maximum

Extent Group 1 / Time Frame 1

* » Time Frame Type Discrete
* » Start 2005
End  
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Time frame for multibeam data collected by NOAA CREP included in the bathymetry grid used to derived slope for Ni'ihau. Mapping missions include HI0504 and AHI0504.

Extent Group 1 / Time Frame 2

* » Time Frame Type Discrete
* » Start 2012
End  
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Time frame for multibeam data collected by NOAA CREP included in the bathymetry grid used to derived slope for West Hawaii. Mapping mission includes SB1207.

Extent Group 2

Extent Description

Northwestern Hawaiian Islands, including French Frigate Shoals, Pearl and Hermes Atoll, Brooks Banks and Kure Atoll.

Extent Group 2 / Geographic Area 1

* » W° Bound -178.378433
* » E° Bound -166.11682
* » N° Bound 28.453633
* » S° Bound 23.62792
* » Description

Extent Group 2 / Vertical Extent

EPSG Code
Vertical Minimum
Vertical Maximum

Extent Group 2 / Time Frame 1

* » Time Frame Type Range
* » Start 2000
End 2001
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Time frame for satellite-derived estimated depths included in the bathymetry grids used to derived slope for Kure (2000-2001) and Pearl and Hermes (2001)

Extent Group 2 / Time Frame 2

* » Time Frame Type Range
* » Start 2005
End 2008
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Time frame for multibeam data collected by NOAA CREP included in the bathymetry grids used to derived slope for Kure, Pearl and Hermes, Brooks Banks, and French Frigate Shoals. Mapping missions include HI0501, AHI0501, HI0503, HI0507, HI0609, AHI0609, HI0612, AHI0612, HI0804, and AHI0804.

Extent Group 3

Extent Description

Mariana Archipelago including Guam, Rota, Tinian, Saipan, Pagan, Asuncion, Supply Reef, Sarigan, Guguan, Farallon de Pajaros, Alamagan, Agrihan, Galvez, Farallon de Medinilla, and Maug.

Extent Group 3 / Geographic Area 1

* » W° Bound 144.62592
* » E° Bound 145.81568649
* » N° Bound 20.03570278
* » S° Bound 13.24126317
* » Description

Extent Group 3 / Vertical Extent

EPSG Code
Vertical Minimum
Vertical Maximum

Extent Group 3 / Time Frame 1

* » Time Frame Type Discrete
* » Start 2001
End  
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Time frame for LiDAR data collected by NAVOO included in the bathymetry grids used to derived slope for Guam, Saipan and Tinian

Extent Group 3 / Time Frame 2

* » Time Frame Type Range
* » Start 2003
End 2010
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Time frame for multibeam data collected by NOAA CREP (except where noted otherwise) included in the bathymetry grids used to derived slope for several locations in the Mariana Archipelago. Mapping missions include:

2003: AHI0307 to Guam, Rota, Tinian, and Saipan

2007: AHI0702 and HI0702 to Guam, Rota, Saipan and Tinian.

2007: AHI0703 and HI0703 to Saipan, Tinian, Sarigan, Guguan, Alamagan, Pagan, Agrihan, Asuncion, Maug, Supply Reef, and Farallon de Pajaros.

2008: Apra Harbor, Guam (collected by the Naval Oceanographic Office and NOAA Office of Coast Survey)

2010: SE1002 to Guam, Rota, Galvez Bank, and Farallon de Medinilla.

Extent Group 3 / Time Frame 3

* » Time Frame Type Discrete
* » Start 2007
End  
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Time frame for LiDAR data collected by JALBTCX included in the bathymetry grid used to derived slope for Guam.

Extent Group 3 / Time Frame 4

* » Time Frame Type Range
* » Start 2000
End 2002
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Time frame for satellite-derived estimated depths included in the bathymetry grid used to derived slope for Tinian.

Extent Group 4

Extent Description

Pacific Remote Islands Marine National Monument (PRIMNM), also known as the Pacific Remote Island Areas, including Baker, Howland, and Wake islands, and Johnston atoll.

Extent Group 4 / Geographic Area 1

* » W° Bound 166.59824
* » E° Bound -159.97264
* » N° Bound 19.31627096
* » S° Bound -0.38235459
* » Description

Extent Group 4 / Vertical Extent

EPSG Code
Vertical Minimum
Vertical Maximum

Extent Group 4 / Time Frame 1

* » Time Frame Type Range
* » Start 2006
End 2007
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Time frame for multibeam data collected by NOAA CREP included in the bathymetry grids used to derived slope for the several locations in the Pacific Remote Island Areas. Mapping missions include:

2006: Mission HI0601 and AHI0601 to Howland, Baker and Johnston

2007: Mission HI0701 and AHI0701 to Wake

Extent Group 5

Extent Description

American Samoa, including Tutuila, Manu'a (Ofo, Olosega, and Ta'u) Islands, and Rose Atoll Marine National Monument and the National Marine Sanctuary of American Samoa including Swains Island.

Extent Group 5 / Geographic Area 1

* » W° Bound -171.2186230908
* » E° Bound -168.131605
* » N° Bound -10.934991
* » S° Bound -14.604747
* » Description

Extent Group 5 / Vertical Extent

EPSG Code
Vertical Minimum
Vertical Maximum

Extent Group 5 / Time Frame 1

* » Time Frame Type Range
* » Start 2004
End 2006
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Time frame for multibeam data collected by NOAA CREP included in the bathymetry grids used to derived slope for the several locations in American Samoa. Mapping missions include:

2004: Mission AHI0402 to Tutuila and the Manu'a (Ofo, Olosega and Ta'u)

2006: Mission AHI0602 and HI0602 to Tutuila, Rose and Swains

Extent Group 5 / Time Frame 2

* » Time Frame Type Discrete
* » Start 2002
End  
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Time frame for satellite-derived estimated depths included in the bathymetry grids used to derived slope for the Manu'a (Ofo, Olosega and Ta'u) and Rose Atoll.

Extent Group 5 / Time Frame 3

* » Time Frame Type Range
* » Start 2001
End 2002
Alternate Start As Of Info  
Alternate End As Of Info  
Description

Time frame for additional multibeam data included in the bathymetry grid used to derived slope for Tutuila.

Spatial Information

Spatial Resolution

Angular Distance  
Angular Distance Units  
Horizontal Distance  
Horizontal Distance Units  
Vertical Distance  
Vertical Distance Units  
Equivalent Scale Denominator  
Level of Detail Description  
 

Spatial Representation

Grid Representation Used?  
Vector Representation Used?  
Text / Table Representation Used?  
TIN Representation Used?  
Stereo Model Representation Used?  
Video Representation Used?  

Grid Representation

Dimension Count
Cell Geometry
Transformation Parameter Available?  

Axis Dimension
Dimension Type
Size
Resolution
Resolution Units
Resolution Type
Description

Axis Dimension
Dimension Type
Size
Resolution
Resolution Units
Resolution Type
Description

Vector Representation

Topology Level
Complex Object Present?  
Complex Object Count
Composite Object Present?  
Composite Object Count
Curve Object Present?  
Curve Object Count
Point Object Present?  
Point Object Count
Solid Object Present?  
Solid Object Count
Surface Object Present?  
Surface Object Count

Reference Systems

Reference System

EPSG Code

Horizontal Resolution
Horizontal Encoding Method
Latitude Resolution
Longitude Resolution
Coordinate X Resolution
Coordinate Y Resolution
Row Resolution
Column Resolution
Horizontal Units
Distance Resolution
Distance Units
Bearing Resolution
Bearing Units
Reference Direction
Reference Meridian

Vertical Resolution
Vertical Encoding Method
Vertical Resolution
Vertical Units

Access Information

Data License  
Data License URL  
Data License Statement
* » Security Class Unclassified
* Security Classification System

Not applicable
Security Handling Description

Not applicable
• Data Access Policy

NOAA Coral Reef Ecosystem Program (CREP) Data Sharing Recommendations, version 9.0 updated August 12, 2015:

CREP welcomes the opportunity to collaborate on research issues contributing to the scientific basis for better management of marine ecosystems. CREP has a very diverse set of field activities that generates large volumes of data using an array of data collection protocols.

The following recommendations are for your consideration as you use this data:

1) Data analyses should take all field exigencies into account. The most effective way to do this would be active collaboration with CREP principal investigators.

2) In all presentations, product releases, or publications using data generated by CREP, proper acknowledgement of both CREP and the individuals responsible for data collection is expected. Citing the DOI (if available) is preferred, a non-DOI example is listed below.

3) If you collect or generate data for the same study areas, CREP requests that you share relevant information on complimentary data collections.

4) Those receiving data are strongly urged to inform the CREP Data Management Team of any errors and discrepancies that are discovered during the course of using these data. They are further urged to bring to the attention of the Team all problems and difficulties encountered in using these data. This information is necessary in order to improve the collections and to facilitate more efficient and economical data processing and retrieval. The users are asked to supply copies of any missing data that may be located, and to provide information as to significant subsets and special aggregations of data that are developed in using the material provided.

Example citation:

"This publication makes use of data products provided by the Ecosystem Sciences Division, Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), with funding support from the NOAA Coral Reef Conservation Program (CRCP). The analysis and interpretations presented here are solely that of the current authors.”
» Data Access Procedure

Data can be accessed online via the Pacific Islands Benthic Habitat Mapping Center website.
• » Data Access Constraints

None
• Data Use Constraints

These data are not to be used for navigation purposes.

Please cite PIFSC Ecosystem Sciences Division (ESD) when using the data.

Suggested citation:

Ecosystem Sciences Division; Pacific Islands Fisheries Science Center (2018). Bathymetric Position Index (BPI) Structures Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean. Pacific Islands Benthic Habitat Mapping Center, https://www.fisheries.noaa.gov/inport/item/12617. [access date]
Metadata Access Constraints

None
Metadata Use Constraints

None

Distribution Information

Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/OfuOlo_5m_BPIStructures.zip
Distributor
File Name OfuOlo_5m_BPIStructures.zip
Description

Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Ofu and Olosega Islands that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/Rose_5m_BPIstructures.zip
Distributor
File Name Rose_5m_BPIstructures.zip
Description

Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Rose Atoll that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/Swains_40m_BPIStructures.zip
Distributor
File Name Swains_40m_BPIStructures.zip
Description

Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Swains that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/Tau_5m_BPIstructures.zip
Distributor
File Name Tau_5m_BPIstructures.zip
Description

Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Ta'u that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
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» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/Tutuila_5m_BPIstructures.zip
Distributor
File Name Tutuila_5m_BPIstructures.zip
Description

Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Tutuila that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
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» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/FDP_10m_BPIstructures.zip
Distributor
File Name FDP_10m_BPIstructures.zip
Description

Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Farallon de Pajaros that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
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» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/agrihan_10m_BPIstructures.zip
Distributor
File Name agrihan_10m_BPIstructures.zip
Description

Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Agrihan that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
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» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/alamagan_10m_BPIstructures.zip
Distributor
File Name alamagan_10m_BPIstructures.zip
Description

Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Alamagan that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
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» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/asuncion_10m_BPIstructures.zip
Distributor
File Name asuncion_10m_BPIstructures.zip
Description

Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Agrihan that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
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Compression Zip
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» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/fdm_5m_bpis.zip
Distributor
File Name fdm_5m_bpis.zip
Description

Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Farallon de Medinilla that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
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» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/gal_5m_BPIstructures.zip
Distributor
File Name gal_5m_BPIstructures.zip
Description

Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Galvez and South Galvez Banks and Eleven-mile reef that includes specific details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
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» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/guam_5m_BPIstructures.zip
Distributor
File Name guam_5m_BPIstructures.zip
Description

Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Guam that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
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File Size  
Application Version  
Compression Zip
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Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/guam_60m_BPIstructures.zip
Distributor
File Name guam_60m_BPIstructures.zip
Description

Zip file containing 60-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Guam that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
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Compression Zip
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Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/guguan_10m_BPIstructures.zip
Distributor
File Name guguan_10m_BPIstructures.zip
Description

Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Guguan that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
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Compression Zip
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Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/maug_10m_BPIstructures.zip
Distributor
File Name maug_10m_BPIstructures.zip
Description

Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Maug that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
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File Size  
Application Version  
Compression Zip
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Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/pagan_10m_BPIstructures.zip
Distributor
File Name pagan_10m_BPIstructures.zip
Description

Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), and metadata (TXT) specifically for Pagan that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
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Application Version  
Compression Zip
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Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/rota_5m_BPIstructures.zip
Distributor
File Name rota_5m_BPIstructures.zip
Description

Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Rota that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/rota_60m_BPIstructures.zip
Distributor
File Name rota_60m_BPIstructures.zip
Description

Zip file containing 60-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Rota that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
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Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/saipan_5m_BPIstructures.zip
Distributor
File Name saipan_5m_BPIstructures.zip
Description

Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Saipan that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/sarigan_10m_BPIstructures.zip
Distributor
File Name sarigan_10m_BPIstructures.zip
Description

Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Sarigan that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/supply_10m_BPIstructures.zip
Distributor
File Name supply_10m_BPIstructures.zip
Description

Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Supply Reef that includes specific details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/tinian_5m_BPIstructures.zip
Distributor
File Name tinian_5m_BPIstructures.zip
Description

Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Tinian that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
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Compression Zip
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Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/benthichabitatlayers/Nii_5m_BPIStructures.zip
Distributor
File Name Nii_5m_BPIStructures.zip
Description

Zip file containing Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Ni'ihau that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/benthichabitatlayers/WestHawaii_BPIstructures.zip
Distributor
File Name WestHawaii_BPIstructures.zip
Description

Zip file containing Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), and ArcGIS layer (LYR) for West Hawaii, Main Hawaiian Islands, as well as the pacific-wide metadata data (XML). Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
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Application Version  
Compression Zip
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Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/benthichabitatlayers/Brooks_20m_BPIStructures.zip
Distributor
File Name Brooks_20m_BPIStructures.zip
Description

Zip file containing 20-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Brooks Bank that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
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Application Version  
Compression Zip
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/benthichabitatlayers/Brooks_5m_BPIStructures.zip
Distributor
File Name Brooks_5m_BPIStructures.zip
Description

Zip file containing 5-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Brooks Bank that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/benthichabitatlayers/FFS_5m_BPIstructures.zip
Distributor
File Name FFS_5m_BPIstructures.zip
Description

Zip file containing Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for French Frigate Shoals that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
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Compression Zip
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Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/benthichabitatlayers/kure_5m_BPIstructures.zip
Distributor
File Name kure_5m_BPIstructures.zip
Description

Zip file containing Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Kure that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/benthichabitatlayers/ph_5m_BPIstructures.zip
Distributor
File Name ph_5m_BPIstructures.zip
Description

Zip file containing Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Pearl and Hermes Atoll that includes specific details for the island about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
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Application Version  
Compression Zip
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Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/pria/benthichabitatlayers/Baker_20m_BPIstructures.rar
Distributor
File Name Baker_20m_BPIstructures.rar
Description

Archive file containing 20-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Baker that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) RAR Archive
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File Size  
Application Version  
Compression RAR
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Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/pria/benthichabitatlayers/Howland_40m_BPIStructures.rar
Distributor
File Name Howland_40m_BPIStructures.rar
Description

Archive file containing 40-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Howland that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) RAR Archive
Distribution Format  
File Size  
Application Version  
Compression RAR
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/pria/benthichabitatlayers/Johnston_20m_BPIStructures.rar
Distributor
File Name Johnston_20m_BPIStructures.rar
Description

Archive file containing 20-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Johnston that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) RAR Archive
Distribution Format  
File Size  
Application Version  
Compression RAR
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/pria/benthichabitatlayers/Wake_10m_BPIStructures.zip
Distributor
File Name Wake_10m_BPIStructures.zip
Description

Zip file containing 10-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Wake that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time  
File Type (Deprecated) Zip
Distribution Format  
File Size  
Application Version  
Compression Zip
Review Status  
Start Date  
» Download URL ftp://ftp.soest.hawaii.edu/pibhmc/website/data/pria/benthichabitatlayers/Wake_50m_BPIStructures.zip
Distributor
File Name Wake_50m_BPIStructures.zip
Description

Zip file containing 50-meter Bathymetric Position Index (BPI) Structures data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Wake that includes details about the methods, data quality, sources, etc. Arc ASCII can be converted to Arc Raster using ArcToolbox Conversion Tools (ASCII to Raster).
File Date/Time 2018-09-13 00:00:00
File Type (Deprecated) Zip
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Compression Zip
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Start Date
End Date
» Download URL
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FGDC Content Type
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» Download URL
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Archive Information

Location
File Identifier
File Name
URL
Description
DOI
Archive Date
Archive Update Frequency
Location
File Identifier
File Name
URL
Description
DOI
Archive Date
Archive Update Frequency
Location
File Identifier
File Name
URL
Description
DOI
Archive Date
Archive Update Frequency

URLs

URL https://www.soest.hawaii.edu/pibhmc/cms/
Name Pacific Islands Benthic Habitat Mapping Center (PIBHMC) website
URL Type Online Resource
File Resource Format HTML
Description

All data described herein are accessible through this website.
URL https://coast.noaa.gov/digitalcoast/tools/btm
Name Benthic Terrain Modeler
URL Type Online Resource
File Resource Format HTML
Description

by NOAA Office for Coastal Management Digital Coast.
URL https://www.arcgis.com/home/item.html?id=b0d0be66fd33440d97e8c83d220e7926
Name Benthic Terrain Modeler for ArcGIS
URL Type Online Resource
File Resource Format HTML
Description

Benthic Terrain Modeler, tools for understanding and classifying the benthic environment.
URL https://www.coris.noaa.gov/search/rest/find/document?searchText=PIBHMC%20AND%20BPI%20AND%20title%3Astructures&start=1&max=500&f=georss&dojo.preventCache=1489091526010
Name Coral Reef Information System (CoRIS) Geoportal GeoRSS feed
URL Type Online Resource
File Resource Format  
Description

Coral Reef Information System (CoRIS) Geoportal GeoRSS feed containing all metadata records associated with this catalog item (view list via Internet Explorer).
URL
Name
URL Type
File Resource Format
Description
URL
Name
URL Type
File Resource Format
Description
URL
Name
URL Type
File Resource Format
Description

Activity Log

Activity Time
Activity Type
Responsible Party
Description
Activity Time
Activity Type
Responsible Party
Description
Activity Time
Activity Type
Responsible Party
Description

Issues

Issue Date
Author
Issue
Issue Date
Author
Issue
Issue Date
Author
Issue

Technical Environment

Description

Bathymetric Position Index Structures were derived from gridded bathymetry using the Benthic Terrain Modeler (BTM).

Spatial reference: Universal Transverse Mercator (UTM), zone varies by location.

See maps and/or individual metadata found in each location's zip file in the distribution information section for specific cell size and spatial reference (UTM zone) information.

Data Quality

Representativeness

BPI values are primarily derived from gridded bathymetry data that is collected from a number of NOAA vessels using multibeam sonars. This multibeam data may be synthesized with other data including LiDAR bathymetry and Ikonos or WorldView satellite image derived bathymetry. Multibeam data collection targets waters from 20 meters to 500 meters depth. LiDAR and satellite derived bathymetry target waters less than 20 meters depth. The goal of all data collection is to collect data over the entire seafloor within the 0-500 meter depth range.
Accuracy

Horizontal positioning system: GPS C/A

Horizontal position accuracy: typically 25 meters (refer to individual metadata files for each island for specific accuracy based on data sources used)

Range resolution of sonar: varies with depth

Raw sounding resolution: varies with depth

Vertical accuracy of gridded product ~ 1% of water depth
Analytical Accuracy
Horizontal Positional Accuracy
Vertical Positional Accuracy
Quantitation Limits
Bias
Comparability
Completeness Measure
Precision
Analytical Precision
Field Precision
Sensitivity
Detection Limit
Completeness Report

BPI values have been determined for areas where gridded bathymetry data is available based primarily on geographic priorities set by funding sources (Tier 1 priorities set by the Coral Reef Conservation Program include the Mariana Archipelago, American Samoa, and the Main Hawaiian Islands). Areas outside these geographic priorities have been generated as time and resources have allowed. In some cases, BPI values have intentionally not been produced for areas if the underlying bathymetry is not of sufficient quality or coverage (e.g., some locations in the PRIA), or if the resulting BPI data is not meaningful (e.g., at Thirty-five and Thirty-seven Fathom Banks there was too little change in elevation to create distinct bathymetric zones using the existing classification dictionary, and as a result the entire banktops would be classified as ‘flats’).

Some gaps exist in bathymetry coverage due to hazardous conditions that prohibited access for the NOAA vessels or to limited time or funding resources.
Conceptual Consistency

Different scales were used in the focal mean analysis to predict BPI (reef) structures for each location. See the maps and metadata for each location for specific details.

Multibeam bathymetry data were collected by different NOAA vessels using the same or similar collection methods. All multibeam data processing was conducted in the same or similar manner by the PIFSC Ecosystem Sciences Division. The MHI bathymetry synthesis provided by the Hawaii Mapping Research Group was the source data for the Main Hawaiian Islands products.
» Quality Control Procedures Employed

Corrections for tide variation and vessel attitude are applied to the multibeam data and a CTD (Conductivity, Temperature, and Depth instrument) cast is performed regularly during data collection to correct for variance within the water column.

Multibeam data are tested for internal consistency; however, no effort is made to compare these data to external references or to other published data.

Data Management

» Have Resources for Management of these Data Been Identified? Yes
» Approximate Percentage of Budget for these Data Devoted to Data Management Unknown
» Do these Data Comply with the Data Access Directive? Yes
» Is Access to the Data Limited Based on an Approved Waiver? No
» If Distributor (Data Hosting Service) is Needed, Please Indicate  
» Approximate Delay Between Data Collection and Dissemination Unknown
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed
» Actual or Planned Long-Term Data Archive Location No Archiving Intended
» If To Be Determined, Unable to Archive, or No Archiving Intended, Explain

Source data are archived, BPI Structure data products are accessible via the Pacific Islands Benthic Habitat Mapping Center website.
» Approximate Delay Between Data Collection and Archiving Unknown
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?

University of Hawaii School of Ocean and Earth Science and Technology, NOAA IRC and NOAA Fisheries ITS resources and assets.

Lineage

» Lineage Statement

The method to develop the BPI data layers are generally described in the Benthic Habitat Mapping "Overview" section of the Pacific Islands Benthic Habitat Mapping Center website.

The data are generated in ArcGIS using Spatial Analyst and the Benthic Terrain Modeler (BTM).

Bathymetric Position Index (BPI) is a second order derivative of bathymetry. The derivation evaluates elevation differences between a focal point and the mean elevation of the surrounding cells within a user defined annulus or circle. A negative value represents a cell that is lower than its neighboring cells (depressions) and a positive value represents a cell that is higher than its neighboring cells (crests). Larger numbers represent more prominent features on the seafloor, which differ greatly from surrounding areas. Flat areas or areas with a constant slope produce near-zero values. (Lundblad et al. 2006)

Sources

Citation Title Benthic Terrain Modeler for ArcGIS
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Contact Name Environmental Systems Research Institute, Inc. (ESRI)
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Citation URL https://www.arcgis.com/home/item.html?id=b0d0be66fd33440d97e8c83d220e7926
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Citation Title Lundblad, E.R. et al. 2006. A Benthic Terrain Classification Scheme for American Samoa. Marine Geodesy, 29:89-111.
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Contact Name Marine Geodesy
Publish Date 2006-02-26
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Citation URL http://dx.doi.org/10.1080/01490410600738021
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Related Items

Item Type Relationship Type Title
Data Set (DS) Cross Reference Bathymetric Position Index (BPI) Zones Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean
Data Set (DS) Cross Reference Dominant Benthic Structure and Biological Cover Habitat Maps for West Maui and West Hawaii
Data Set (DS) Cross Reference Hard and Soft Bottom Seafloor Substrate Map Derived from an Unsupervised Classification of Gridded Bathymetry Derivatives for the NOAA Habitat Blueprint West Hawaii Focus Area
Data Set (DS) Cross Reference Hard and Soft Bottom Seafloor Substrate Maps Derived from an Unsupervised Classification of Gridded Backscatter at Select U.S. Locations in the Pacific
Data Set (DS) Cross Reference Multi beam bathymetry and backscatter synthesis for the Main Hawaiian Islands (5 meter resolution)
Data Set (DS) Cross Reference Rugosity Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean
Data Set (DS) Cross Reference Scleractinian Coral Cover Maps Derived from Classified in situ Seafloor Imagery for Select U.S. Locations in the Pacific from 2001 to 2015
Data Set (DS) Cross Reference Slope Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean
     
     
     

Catalog Details

Catalog Item ID 12617
Metadata Record Created By Annette M DesRochers
Metadata Record Created 2012-07-12 21:50+0000
Metadata Record Last Modified By SysAdmin InPortAdmin
» Metadata Record Last Modified 2023-08-15 17:09+0000
Metadata Record Published 2017-03-13
Owner Org PIFSC
Metadata Publication Status Published Externally
Do Not Publish? N
Metadata Workflow State Published / External
Metadata Last Review Date 2017-03-13
Metadata Review Frequency 1 Year
Metadata Next Review Date 2018-03-13
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