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Short Citation:
National Centers for Coastal Ocean Science, 2022: Niihau Ground Validation Point Data for Benthic Habitats ofthe Main Hawaiian Islands Prepared by Visual Interpretation fromRemote Sensing Imagery Collected by NOAA Year 2000, https://www.fisheries.noaa.gov/inport/item/39404.

Item Identification

Title: Niihau Ground Validation Point Data for Benthic Habitats ofthe Main Hawaiian Islands Prepared by Visual Interpretation fromRemote Sensing Imagery Collected by NOAA Year 2000
Short Name: niihau_ground_vald
Status: Completed
Publication Date: 2002-05-24
Abstract:

This project is a cooperative effort among the NationalOcean Service, National Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment; the University of Hawaii; and Analytical Laboratories of Hawaii, LLC. The goal of the work was to develop coral reef mapping methods and compare benthic habitat maps generated by photointerpreting georeferenced color aerial photography, hyperspectral and IKONOS satellite imagery. These pointdata were generated to conduct ground validation during map preparation.

Purpose:

The National Ocean Service is conducting research todigitally map biotic resources and coordinate a long-term monitoringprogram that can detect and predict change in U.S. coral reefs, andtheir associated habitats and biological communities. The purpose ofthis survey was to investigate areas of imagery where uncertaintiesexist on the photointerpreter's behalf during the decision makingprocess of benthic habitat type for the main Hawaiian Islands.

Notes:

409

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
ISO 19115 Topic Category environment
ISO 19115 Topic Category oceans
None aquatic vegetation
None coral reef
None coralline algae
None environmental monitoring
None habitat
None oceans
None point
None reef
None submerged
None unconsolidated sediments

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None Hawaii
None Niihau
None U.S. Exclusive Economic Zone
None United States

Physical Location

Organization: National Centers for Coastal Ocean Science
City: Silver Spring
State/Province: MD

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Data Presentation Form: map
Distribution Liability:

The National Oceanic and Atmospheric Administration (NOAA) National Centers for Coastal Ocean Science(NCCOS) produced this data CD-ROM. NCCOS Biogeography Program does not guarantee the accuracy of the geographic features or attributes.Please see the metadata records for each data set for completeinformation on the source, limitations, and proper use.

Support Roles

Data Steward

CC ID: 469062
Date Effective From: 2002-05-24
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Distributor

CC ID: 469064
Date Effective From: 2002-05-24
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Metadata Contact

CC ID: 469065
Date Effective From: 2002-05-24
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Point of Contact

CC ID: 469063
Date Effective From: 2002-05-24
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Principal Investigator

CC ID: 469066
Date Effective From: 2002-05-24
Date Effective To:
Contact (Person): Battista, Tim
Email Address: tim.battista@noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 469069
W° Bound: -160.239645
E° Bound: -160.094851
N° Bound: 22.015359
S° Bound: 21.891159

Extent Group 1 / Time Frame 1

CC ID: 469068
Time Frame Type: Range
Start: 2001
End: 2002

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Vector Representation 1

CC ID: 585378
Point Object Present?: Yes
Point Object Count: 566

Access Information

Security Class: Unclassified
Data Access Constraints:

None

Data Use Constraints:

Not for navigation

Distribution Information

Distribution 1

CC ID: 469070
Download URL: http://coastalscience.noaa.gov/datasets/ccma/biogeo/hawaii/gvp/niihau_gv.zip
Distributor:
Description:

Downloadable Data

File Type: Shapefile
File Size: 0.073

URLs

URL 1

CC ID: 469059
URL: http://coastalscience.noaa.gov/datasets/ccma/biogeo/hawaii/gvp/niihau_gv.zip
URL Type:
Online Resource

URL 2

CC ID: 469060
URL: http://ccma.nos.noaa.gov/products/biogeography/hawaii_cd/data/
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 469088
Activity Date/Time: 2013-10-30
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 469087
Activity Date/Time: 2017-04-05
Description:

Converted from FGDC Content Standards for Digital GeospatialMetadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 585376
Activity Date/Time: 2017-09-13
Description:

Partial upload of Spatial Info section only.

Activity Log 4

CC ID: 716680
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Technical Environment

Description:

Microsoft Windows 2000 Version 5.0(Build 2195) Service Pack 3; ESRI ArcCatalog 8.2.0.700

Data Quality

Accuracy:

The points in this thematic data layer were acquired by GPS data using a Trimble GeoExplorer 3 with a customized data dictionary designed to reflect the NOAA Classification Scheme for Benthic Habitats of the Main Eight Hawaiian Islands. All habitat determinations were made in the field, recorded in the GPS data logger and seamlessly transferred to ArcView GIS using Trimble Path Finder Office Software.

Horizontal Positional Accuracy:

Point accuracy was determined by three tests producing circular RMS statistic. Point GPS data were acquired by repeated occupation of a fixed point yielding a 95% sigma RMS of 5 meters compared to the position mean. Replicate GPS positions were collected after navigating to a way point by boat yielding RMS value of 5 meters. Registered monuments were occupied and replicate positions collected yielding an RMS value of 3 meters. Thus, all point features in these ground validation data are at least 95% sigma of 5 meters.

Completeness Report:

Five hundred sixty six field positions were occupied and habitat characterization conducted for ground validation during this work. These data were included in the dataset as a GIS layer and the first draft map was edited based on this ground truth. All areas where uncertainty existed on the part of the photointerpreter during habitat delineation were investigated in the field. All data were collected and integrated into the mapped products as planned.

Conceptual Consistency:

The sites for ground validation were selected to specifically investigate habitat types and gradients of spectral signatures. All areas where uncertainty existed on the part of the photointerpreter during habitat delineation were investigated in the field. Waypoints in these areas were generated on the geo-referenced imagery. The waypoints were navigated to and occupied. The habitat was observed and GPS data collected. One hundred GPS positions were collected at one-second intervals for each survey site. The positions were averaged to obtain a single survey point. The data were post processed for differential correction. The general area was explored and, as needed, additional GPS positions were collected to mark transitions between habitat types of areas mapped at the level of the minimum mapping unit (MMU).

Lineage

Process Steps

Process Step 1

CC ID: 469057
Description:

The first draft of each benthic habitat map was generated by visual interpretation of the habitat boundaries from remote sensing imagery, and areas where habitat determination was uncertain were identified. Waypoints in these areas were generated on the geo-referenced imagery and over laid on the draft maps in the GIS. The areas were printed and waterproofed in preparation for taking them into the field. The waypoints were navigated to and occupied using the appropriate size boats. The habitat was observed and GPS data collected. One hundred GPS positions were collected at one-second intervals for each survey site. The positions were averaged to obtain a single survey point. The data were post processed for differential correction. The general area was explored and, as needed, additional GPS positions were collected to mark transitions between habitat types of areas mapped at the level of the minimum mapping unit (MMU). The field ground validation data were overlaid on the imagery with the first draft habitat map in the GIS. The habitat polygons were edited to resolve uncertainties. These ground validation point data are provided in this thematic GIS shape file.

Process Date/Time: 2002-01-01 00:00:00

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity niihau_gv.dbf

Catalog Details

Catalog Item ID: 39404
GUID: gov.noaa.nmfs.inport:39404
Metadata Record Created By: Tyler Christensen
Metadata Record Created: 2017-04-05 12:52+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2018-02-08
Owner Org: NCCOS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2018-02-08
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2019-02-08