Short Citation:
Pacific Islands Fisheries Science Center, 2020: Bathymetric Position Index (BPI) Zones Grid Derived from Gridded Bathymetry for Select U.S. Coral Reef Locations across the Pacific Ocean, https://www.fisheries.noaa.gov/inport/item/12616.

Item Identification

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

Bathymetric Position Index (BPI) Zones 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 4 classes (crest, depression, flat, slope) 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 Zone 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.

Other Citation Details:

Weiss, A. D. 2001. Topographic positions and landforms analysis (Conference Poster). ESRI International User Conference., San Diego, CA July 9–13. http://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.

Keywords

Theme Keywords

Thesaurus Keyword
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 Zones
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
ISO 19115 Topic Category 006
ISO 19115 Topic Category elevation
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 Complexity
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 Rugosity
None Seafloor

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

Physical Location

Organization: Pacific Islands Fisheries Science Center
City: Honolulu
State/Province: HI
Country: USA

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 dataset. 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 1-4.

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

Data Set Credit

CC ID: 785366
Date Effective From: 2003
Date Effective To:
Contact (Organization): NOAA Coral Reef Conservation Program (CRCP) (CRCP)
Address: 1305 East West Highway 10th Floor
Silver Spring, MD 20910-3281
Phone: (301) 713-3155
URL: http://coralreef.noaa.gov

Data Steward

CC ID: 785367
Date Effective From: 2018
Date Effective To:
Contact (Person): Acoba, Tomoko S
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: tomoko.acoba@noaa.gov
Phone: (808)725-5448
Business Hours: 8:00 am - 4:00 pm HST
Contact Instructions:

email preferred

Data Steward

CC ID: 785368
Date Effective From: 2015
Date Effective To: 2017
Contact (Person): Suka, Rhonda
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: rhonda.suka@noaa.gov
Phone: (808)725-5494
Contact Instructions:

Email preferred

Distributor

CC ID: 785369
Date Effective From: 2018
Date Effective To:
Contact (Person): Lichowski, Frances
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: frances.lichowski@noaa.gov
Phone: (808)725-5476
Contact Instructions:

email preferred

Distributor

CC ID: 785370
Date Effective From: 2008
Date Effective To: 2017
Contact (Person): Akridge, Michael W
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: michael.akridge@noaa.gov
Phone: (808)725-5483
Contact Instructions:

Email preferred

Metadata Contact

CC ID: 785371
Date Effective From: 2010
Date Effective To:
Contact (Person): DesRochers, Annette M
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: annette.desrochers@noaa.gov
Phone: (808)725-5461
Business Hours: 8 am - 5 pm
Contact Instructions:

Email preferred

Originator

CC ID: 785372
Date Effective From: 2003
Date Effective To:
Contact (Organization): Pacific Islands Fisheries Science Center (PIFSC)
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Phone: 808-725-5300
URL: http://www.pifsc.noaa.gov
Business Hours: 8:00 a.m. - 4:30 p.m.

Point of Contact

CC ID: 785373
Date Effective From: 2016
Date Effective To:
Contact (Person): DesRochers, Annette M
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: annette.desrochers@noaa.gov
Phone: (808)725-5461
Business Hours: 8 am - 5 pm
Contact Instructions:

Email preferred

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Description:

Main Hawaiian Islands, including West Hawaii and Niihau.

Extent Group 1 / Geographic Area 1

CC ID: 386221
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

CC ID: 386222
W° Bound: -160.292237
E° Bound: -160.01701
N° Bound: 22.056916
S° Bound: 21.729768
Description

Niihau

Extent Group 1 / Time Frame 1

CC ID: 386223
Time Frame Type: Discrete
Start: 2005
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

CC ID: 386224
Time Frame Type: Discrete
Start: 2012
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

CC ID: 386225
W° Bound: -178.378433
E° Bound: -166.11682
N° Bound: 28.453633
S° Bound: 23.62792

Extent Group 2 / Time Frame 1

CC ID: 386226
Time Frame Type: Range
Start: 2000
End: 2001
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

CC ID: 386227
Time Frame Type: Range
Start: 2005
End: 2008
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

CC ID: 386228
W° Bound: 144.62592
E° Bound: 145.81568649
N° Bound: 20.03570278
S° Bound: 13.24126317

Extent Group 3 / Time Frame 1

CC ID: 386229
Time Frame Type: Discrete
Start: 2001
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

CC ID: 386230
Time Frame Type: Range
Start: 2003
End: 2010
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

CC ID: 386231
Time Frame Type: Discrete
Start: 2007
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

CC ID: 386232
Time Frame Type: Range
Start: 2000
End: 2002
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

CC ID: 386233
W° Bound: 166.59824
E° Bound: -159.97264
N° Bound: 19.31627096
S° Bound: -0.38235459

Extent Group 4 / Time Frame 1

CC ID: 386234
Time Frame Type: Range
Start: 2006
End: 2007
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

CC ID: 386235
W° Bound: -171.2186230908
E° Bound: -168.131605
N° Bound: -10.934991
S° Bound: -14.604747

Extent Group 5 / Time Frame 1

CC ID: 386236
Time Frame Type: Range
Start: 2004
End: 2006
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

CC ID: 386237
Time Frame Type: Discrete
Start: 2002
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

CC ID: 386238
Time Frame Type: Range
Start: 2001
End: 2002
Description:

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

Access Information

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 (ESD), 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) Zones 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/12616. [access date]

Metadata Access Constraints:

None

Metadata Use Constraints:

None

Distribution Information

Distribution 1

CC ID: 385829
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/OfuOlo_5m_BPIZones.zip
Distributor:
File Name: OfuOlo_5m_BPIZones.zip
Description:

Zip file containing 5-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 2

CC ID: 385841
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/Rose_5m_BPIzones.zip
Distributor:
File Name: Rose_5m_BPIzones.zip
Description:

Zip file containing 5-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 3

CC ID: 385847
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/Swains_40m_BPIZones.zip
Distributor:
File Name: Swains_40m_BPIZones.zip
Description:

Zip file containing 5-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 4

CC ID: 385830
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/Tau_5m_BPIzones.zip
Distributor:
File Name: Tau_5m_BPIzones.zip
Description:

Zip file containing 5-meter Bathymetric Position Index (BPI) Zones 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).

File Type: Zip

Distribution 5

CC ID: 385837
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/amsamoa/benthichabitatlayers/Tutuila_5m_BPIzones.zip
Distributor:
File Name: Tutuila_5m_BPIzones.zip
Description:

Zip file containing 5-meter Bathymetric Position Index (BPI) Zones 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).

File Type: Zip

Distribution 6

CC ID: 385719
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/FDP_10m_BPIzones.zip
Distributor:
File Name: FDP_10m_BPIzones.zip
Description:

Zip file containing 10-meter Bathymetric Position Index (BPI) Zones 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).

File Type: Zip

Distribution 7

CC ID: 385702
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/agrihan_10m_BPIzones.zip
Distributor:
File Name: agrihan_10m_BPIzones.zip
Description:

Zip file containing 10-meter Bathymetric Position Index (BPI) Zones 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).

File Type: Zip

Distribution 8

CC ID: 385694
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/alamagan_10m_BPIzones.zip
Distributor:
File Name: alamagan_10m_BPIzones.zip
Description:

Zip file containing 10-meter Bathymetric Position Index (BPI) Zones 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).

File Type: Zip

Distribution 9

CC ID: 385707
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/asuncion_10m_BPIzones.zip
Distributor:
File Name: asuncion_10m_BPIzones.zip
Description:

Zip file containing 10-meter Bathymetric Position Index (BPI) Zones data (ASC), maps (PDF and JPG), ArcGIS layer (LYR) and metadata (TXT) specifically for Asuncion 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 Type: Zip

Distribution 10

CC ID: 385682
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/fdm_5m_bpiz.zip
Distributor:
File Name: fdm_5m_bpiz.zip
Description:

Zip file containing 5-meter Bathymetric Position Index (BPI) Zones 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).

File Type: Zip

Distribution 11

CC ID: 385825
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/gal_5m_BPIzones.zip
Distributor:
File Name: gal_5m_BPIzones.zip
Description:

Zip file containing 5-meter Bathymetric Position Index (BPI) Zones 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).

File Type: Zip

Distribution 12

CC ID: 385616
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/guam_5m_BPIzones.zip
Distributor:
File Name: guam_5m_BPIzones.zip
Description:

Zip file containing 5-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 13

CC ID: 385617
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/guam_60m_BPIzones.zip
Distributor:
File Name: guam_60m_BPIzones.zip
Description:

Zip file containing 60-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 14

CC ID: 385687
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/guguan_10m_BPIzones.zip
Distributor:
File Name: guguan_10m_BPIzones.zip
Description:

Zip file containing 10-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 15

CC ID: 385708
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/maug_10m_BPIzones.zip
Distributor:
File Name: maug_10m_BPIzones.zip
Description:

Zip file containing 10-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 16

CC ID: 385698
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/pagan_10m_BPIzones.zip
Distributor:
File Name: pagan_10m_BPIzones.zip
Description:

Zip file containing 10-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 17

CC ID: 385669
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/rota_5m_BPIzones.zip
Distributor:
File Name: rota_5m_BPIzones.zip
Description:

Zip file containing 5-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 18

CC ID: 385670
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/rota_60m_BPIzones.zip
Distributor:
File Name: rota_60m_BPIzones.zip
Description:

Zip file containing 60-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 19

CC ID: 385678
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/saipan_5m_BPIzones.zip
Distributor:
File Name: saipan_5m_BPIzones.zip
Description:

Zip file containing 5-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 20

CC ID: 385686
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/sarigan_10m_BPIzones.zip
Distributor:
File Name: sarigan_10m_BPIzones.zip
Description:

Zip file containing 10-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 21

CC ID: 385715
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/supply_10m_BPIzones.zip
Distributor:
File Name: supply_10m_BPIzones.zip
Description:

Zip file containing 10-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 22

CC ID: 385674
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/cnmi-guam/benthichabitatlayers/tinian_5m_BPIzones.zip
Distributor:
File Name: tinian_5m_BPIzones.zip
Description:

Zip file containing 5-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 23

CC ID: 385555
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/benthichabitatlayers/Nii_5m_BPIZones.zip
Distributor:
File Name: Nii_5m_BPIZones.zip
Description:

Zip file containing Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 24

CC ID: 77744
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/benthichabitatlayers/WestHawaii_BPIzones.zip
Distributor:
File Name: WestHawaii_BPIzones.zip
Description:

Zip file containing Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 25

CC ID: 385585
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/benthichabitatlayers/Brooks_20m_BPIZones.zip
Distributor:
File Name: Brooks_20m_BPIZones.zip
Description:

Zip file containing 20-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 26

CC ID: 385586
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/benthichabitatlayers/Brooks_5m_BPIZones.zip
Distributor:
File Name: Brooks_5m_BPIZones.zip
Description:

Zip file containing 5-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 27

CC ID: 385568
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/benthichabitatlayers/FFS_5m_BPIzones.zip
Distributor:
File Name: FFS_5m_BPIzones.zip
Description:

Zip file containing Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 28

CC ID: 385573
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/benthichabitatlayers/kure_5m_BPIzones.zip
Distributor:
File Name: kure_5m_BPIzones.zip
Description:

Zip file containing Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 29

CC ID: 385577
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/nwhi/benthichabitatlayers/ph_5m_BPIzones.zip
Distributor:
File Name: ph_5m_BPIzones.zip
Description:

Zip file containing Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 30

CC ID: 385855
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/pria/benthichabitatlayers/Baker_20m_BPIZones.rar
Distributor:
File Name: Baker_20m_BPIZones.rar
Description:

Archive file containing 20-meter Bathymetric Position Index (BPI) Zones 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 Type: RAR Archive

Distribution 31

CC ID: 385856
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/pria/benthichabitatlayers/Howland_40m_BPIZones.rar
Distributor:
File Name: Howland_40m_BPIZones.rar
Description:

Archive file containing 40-meter Bathymetric Position Index (BPI) Zones 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 Type: RAR Archive

Distribution 32

CC ID: 385863
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/pria/benthichabitatlayers/Johnston_20m_BPIZones.rar
Distributor:
File Name: Johnston_20m_BPIZones.rar
Description:

Archive file containing 20-meter Bathymetric Position Index (BPI) Zones 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 Type: RAR Archive

Distribution 33

CC ID: 385871
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/pria/benthichabitatlayers/Wake_10m_BPIZones.zip
Distributor:
File Name: Wake_10m_BPIZones.zip
Description:

Zip file containing 10-meter Bathymetric Position Index (BPI) Zones 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 Type: Zip

Distribution 34

CC ID: 385864
Download URL: ftp://ftp.soest.hawaii.edu/pibhmc/website/data/pria/benthichabitatlayers/Wake_50m_BPIZones.zip
Distributor:
File Name: Wake_50m_BPIZones.zip
Description:

Zip file containing 50-meter Bathymetric Position Index (BPI) Zones 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: 2018-09-12 00:00:00
File Type: Zip

URLs

URL 1

CC ID: 75264
URL: http://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 2

CC ID: 344536
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 3

CC ID: 344539
URL: http://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 4

CC ID: 387913
URL: https://www.coris.noaa.gov/search/rest/find/document?searchText=CRED%20AND%20title%3ABPI%20AND%20title%3Azones&start=1&max=500&f=georss&dojo.preventCache=1489436419487
Name: Coral Reef Information System (CoRIS) Geoportal GeoRSS feed
URL Type:
Online Resource
Description:

Coral Reef Information System (CoRIS) Geoportal GeoRSS feed containing all metadata records associated with this catalog item (view list via Internet Explorer).

Technical Environment

Description:

Bathymetric Position Index (BPI) Zones were derived from gridded bathymetry using the Benthic Terrain Modeler (BTM). BPI Zones are derived from a focal mean analysis on bathymetry and slope.

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 downloads 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.

Data artifacts may exist in the individual BPI Zone datasets as a result of problems associated with the original satellite imagery or with merging satellite-derived or LIDAR bathymetry with the multibeam bathymetry. These specific issues are captured and documented with the individual files.

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

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 BPI scalefactors were used in the focal mean analysis to derive BPI Zones for each location based on measurements of key reef features evident in the bathymetry and hillshade data. 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
Approximate Delay Between Data Collection and Dissemination: Unknown
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 Zone 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

Benthic Terrain Modeler for ArcGIS

CC ID: 387461
Contact Name: Environmental Systems Research Institute, Inc. (ESRI)
Citation URL: https://www.arcgis.com/home/item.html?id=b0d0be66fd33440d97e8c83d220e7926

Lundblad, E.R. et al. 2006. A Benthic Terrain Classification Scheme for American Samoa. Marine Geodesy, 29:89-111.

CC ID: 387459
Contact Name: Marine Geodesy
Publish Date: 2006-02-26
Citation URL: http://dx.doi.org/10.1080/01490410600738021

Catalog Details

Catalog Item ID: 12616
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: 2020-08-03 16:13+0000
Metadata Record Published: 2017-03-13
Owner Org: PIFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2018-03-14