Short Citation:
National Centers for Coastal Ocean Science, 2021: Maps of Shallow-water Banks in the Northwestern Hawaiian Islands Derived from Moderate Resolution Landsat Satellite Imagery, https://www.fisheries.noaa.gov/inport/item/39252.

Item Identification

Title: Maps of Shallow-water Banks in the Northwestern Hawaiian Islands Derived from Moderate Resolution Landsat Satellite Imagery
Short Name: bank_map_nwhi
Status: Completed
Publication Date: 2002-12-31
Abstract:

Shallow-water (generally, less than 30 meters) bank areas in the Northwestern Hawaiian Islands were identified using semi-automated image analysis of Landsat 7 ETM+ satellite imagery. An area of approximately 10,000 sq. km was mapped using the moderate-resolution satellite imagery and shallow-water bank maps were generated for the French Frigate Shoals, Gardner Pinnacles, Lisianski Island, Laysan Island, Maro Reef, Necker Island, Nihoa Island, Pioneer Bank, Raita Bank, St. Rogatien Bank, the Brooks Banks, and the bank west of Nihoa. This project is a cooperative effort among the National Oceanic and Atmospheric Administration, State of Hawaii Department of Land and Natural Resources, and the U.S. Fish and Wildlife Service to produce benthic habitat maps and georeferenced imagery for the Northwestern Hawaiian Islands. This project was conducted in support of the U.S. Coral Reef Task Force.

Purpose:

The National Ocean Service is conducting research to digitally map biotic resources and coordinate a long-term monitoring program that can detect and predict change in U.S. coral reefs, and their associated habitats and biological communities. This project was conducted in support of the U.S. Coral Reef Task Force (http://www.coris.noaa.gov).

Notes:

561

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category environment
ISO 19115 Topic Category oceans
None banks
None coral
None environmental monitoring
None Landsat
None oceans
None reef
None satellite imagery

Spatial Keywords

Thesaurus Keyword
None Brooks Banks
None French Frigate Shoals
None Gardner Pinnacles
None Laysan Island
None Lisianski Island
None Maro Reef
None Necker Island
None Nihoa Island
None Northwestern Hawaiian Islands
None Pioneer Bank
None Raita Bank
None St. Rogatien Bank
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: raster digital data
Distribution Liability:

not to be used for navigation

Data Set Credit: NOAA, University of Hawaii, U.S. Fish and Wildlife Service

Support Roles

Data Steward

CC ID: 462502
Date Effective From: 2002-12-31
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Distributor

CC ID: 462504
Date Effective From: 2002-12-31
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Metadata Contact

CC ID: 462505
Date Effective From: 2002-12-31
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Point of Contact

CC ID: 462503
Date Effective From: 2002-12-31
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Principal Investigator

CC ID: 462506
Date Effective From: 2002-12-31
Date Effective To:
Contact (Person): Stumpf, Richard
Email Address: richard.stumpf@noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 462509
W° Bound: -179
E° Bound: -160
N° Bound: 29
S° Bound: 22

Extent Group 1 / Time Frame 1

CC ID: 462508
Time Frame Type: Range
Start: 2000
End: 2002

Spatial Information

Spatial Representation

Representations Used

Grid: Yes

Access Information

Security Class: Unclassified
Data Access Constraints:

None

Data Use Constraints:

These maps are NOT to be used for navigation. These maps of shallow-water bank areas in the Northwestern Hawaiian Islands have been reviewed by numerous decision makers and scientists familiar with the Northwestern Hawaiian Islands region.

URLs

URL 1

CC ID: 462501
URL: http://ccma.nos.noaa.gov/ecosystems/coralreef/nwhi/
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 462533
Activity Date/Time: 2013-10-21
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 462532
Activity Date/Time: 2017-04-05
Description:

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

Activity Log 3

CC ID: 584176
Activity Date/Time: 2017-09-13
Description:

Partial upload of Spatial Info section only.

Activity Log 4

CC ID: 600885
Activity Date/Time: 2017-11-01
Description:

Replaced entire Lineage section to populate new Source Contribution field.

Activity Log 5

CC ID: 716619
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Data Quality

Horizontal Positional Accuracy:

All of the imagery is horizontally positioned to less than one Landsat multispectral pixel (28.5 meters). Spatial data meets or exceeds national map accuracy standards for fixed features positioned to less than one Landsat multispectral pixel (28.5 meters). Spatial data meets or exceeds national map accuracy standards for fixed features.

Vertical Positional Accuracy:

none reported

Completeness Report:

In order to improve the contrast, the bank maps of several locations were converted from a blue color scheme to a panchromatic color scheme. Those maps using the blue color scheme are French Frigate Shoals, Lisianski Island, and Laysan Island. Those maps using the panchromatic color scheme are Gardner Pinnacles, Maro Reef, Necker Island, Nihoa Island, Pioneer Bank, Raita Bank, St. Rogatien Bank, the Brooks Banks, and the bank west of Nihoa. No satellite imagery was available for the Gambia shoal, therefore the location of shallow-water banks was estimated from nautical charts of the region using the 10 fathom isobath as a proxy.

Conceptual Consistency:

Multispectral Landsat satellite imagery was positioned using National Geodetic Survey ground control data or Landsat satelite ephemeris data for French Frigate Shoals, Gardner Pinnacles, Lisianski Island, Laysan Island, Maro Reef, Necker Island, Nihoa Island, Pioneer Bank, Raita Bank, St. Rogatien Bank, the Brooks Banks, and the bank west of Nihoa.Where available (French Frigate Shoals, Gardner Pinnacles, Lisianski Island, Laysan Island, Maro Reef, Necker Island, Nihoa Island), IKONOS satellite imagery was used to verify the positioning of the Landsat satellite imagery. For the remaining areas, at least two Landsat satellite images were used to perform a least-squares positioning adjustment of the imagery.

Lineage

Sources

Landsat 7 ETM+ satellite imagery for the North Western Hawaiian Islands

CC ID: 600886
Contact Name: U.S. Geological Survey, Earth Resources Obervation Systems (EROS) Data Center
Publish Date: 2002-01-01
Extent Type: Range
Extent Start Date/Time: 2000
Extent End Date/Time: 2001
Source Contribution:

Moderate-resolution Landsat satellite imagery was analyzed to produce maps of shallow-water banks in the Northwestern Hawaiian Islands | Type of Source Media: Landsat satellite imagery on CD-ROM

Process Steps

Process Step 1

CC ID: 600887
Description:

A map of the shallow-water bank visible in Landsat 7 ETM+ satellite imagery for French Frigate Shoals, Gardner Pinnacles, Lisianski Island, Laysan Island, Maro Reef, Necker Island, Nihoa Island, Pioneer Bank, Raita Bank, St. Rogatien Bank, the Brooks Banks, and the bank west of Nihoa was produced by generating a water reflectance transformation of the satellite blue band. The procedure converts DNs to at-satellite reflectance, then transforms at-satellite reflectance to water reflectance using the technique described by Neckel and Labs. The blue band is stretched using image analysis software to depict the extent of the shallow-water (to a water depth of ~30 meters) bank.

Process Date/Time: 2001-01-01 00:00:00

Catalog Details

Catalog Item ID: 39252
Metadata Record Created By: Tyler Christensen
Metadata Record Created: 2017-04-05 12:51+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2019-06-04 13:14+0000
Metadata Record Published: 2018-02-08
Owner Org: NCCOS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2019-02-09