gov.noaa.nmfs.inport:39290
eng
UTF8
dataset
National Centers for Coastal Ocean Science
resourceProvider
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
pointOfContact
2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
Detailed Maps Depicting the Shallow-Water Benthic Habitats of the Northwestern Hawaiian Islands Derived from High Resolution IKONOS Satellite Imagery
detailed_map_nwhi
2002-12-31
publication
NOAA/NMFS/EDM
39290
https://www.fisheries.noaa.gov/inport/item/39290
WWW:LINK-1.0-http--link
Full Metadata Record
View the complete metadata record on InPort for more information about this dataset.
information
Stumpf, Richard
richard.stumpf@noaa.gov
principalInvestigator
http://ccma.nos.noaa.gov/ecosystems/coralreef/nwhi/
WWW:LINK-1.0-http--link
Citation URL
Online Resource
download
Detailed, shallow-water coral reef ecosystem maps were generated by rule-based, semi-automated image analysis of high-resolution satellite imagery for nine locations in the Northwestern Hawaiian Islands. 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.
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).
NOAA, University of Hawaii, U.S. Fish and Wildlife Service
completed
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
pointOfContact
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
custodian
notPlanned
OceanCommunity
theme
Geospatial Platform
SAV
benthic
coral
environmental monitoring
habitat
oceans
reef
satellite imagery
seagrass
theme
French Frigate Shoals
Kure Atoll
Laysan Island
Lisianski Island
Maro Reef
Midway Atoll
Necker Island
Nihoa Island
Northwestern Hawaiian Islands
Pearl and Hermes Atoll
United States
place
DOC/NOAA/NOS/NCCOS > National Centers for Coastal Ocean Science, National Ocean Service, NOAA, U.S. Department of Commerce
dataCentre
Global Change Master Directory (GCMD) Data Center Keywords
2017-04-24
publication
8.5
NWHI_Benthic
project
InPort
otherRestrictions
Cite As: National Centers for Coastal Ocean Science, [Date of Access]: Detailed Maps Depicting the Shallow-Water Benthic Habitats of the Northwestern Hawaiian Islands Derived from High Resolution IKONOS Satellite Imagery [Data Date Range], https://www.fisheries.noaa.gov/inport/item/39290.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
otherRestrictions
Access Constraints: None
otherRestrictions
Use Constraints: These maps are NOT to be used for navigation. These detailed habitat maps of the shallow-water benthic habitats of the Northwestern Hawaiian Islands have been reviewed by numerous decision makers and scientists familiar with the Northwestern Hawaiian Islands region.
otherRestrictions
Distribution Liability: not to be used for navigation
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
39290
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/nccos/dmp/pdf/39290.pdf
WWW:LINK-1.0-http--link
NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
grid
eng; US
environment
oceans
-179
-160
22
29
| Currentness: Ground Condition
2000
2002
false
eng
false
Northwestern Hawaiian Islands Classification Scheme
2017-04-17
publication
GeoTIFF
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
distributor
http://ccma.nos.noaa.gov/ecosystems/coralreef/nwhi/
WWW:LINK-1.0-http--link
http://ccma.nos.noaa.gov/ecosystems/coralreef/nwhi/
Downloadable Data
download
dataset
Accuracy
The accuracy assessment was performed on the aggregated cover benthic habitat maps only. This was due to the relatively few site-specific benthic characterization data available for the Northwestern Hawaiian Islands. A statistic based accuracy assessment was performed using a subset of the 1,130 site-specific benthic characterization data (376 points were used in the accuracy assessment) available for the NWHI. The overall accuracy of the aggregated cover maps was 72 percent (Kappa Statistic 0.59, Tau Coefficient 0.62), and ranged from 94 percent accuracy for unconsolidated sediment with little or no algae or seagrass to 9% for unconsolidated sediment with seagrass present.
Horizontal Positional Accuracy
Spatial data meets or exceeds national map accuracy standards for fixed features. Kure Atoll, Midway Atoll, Pearl and Hermes Atoll, Lisianski Island, Laysan Island, French Frigate Shoals, and Nihoa Island are positioned to within five (5) meters at sea level. Necker Island is positioned to within 15 meters at sea level. Maro Reef is positioned to within eight (8) meters at sea level.
Vertical Positional Accuracy
none reported
Completeness Report
High-resolution satellite imagery was analyzed using rule-based, semi-automated, digital image analysis techniques to produce benthic habitat maps of the Northwestern Hawaiian Island. In total, 1,130 site specific examples of the spectral and spatial characteristics of differing habitats were available and incorporated into the analysis process for the NWHI. The minimum mapping unit (MMU) for identifying habitats or features was 100 sq. m. Generally, features to a depth of approximately 30 m can be analyzed from the satellite imagery. Due to the depth of water surrounding Gardner Pinnacles, very little characterization of the benthic habitats of Gardner Pinnacles was possible. No satellite imagery was available for Gambia shoals.
Conceptual Consistency
Multispectral satellite imagery was positioned using National Geodetic Survey ground control data for Kure Atoll, Midway Atoll, Pearl and Hermes Atoll, Lisianski Island, Laysan Island, French Frigate Shoals, and Nihoa Island. Satellite imagery of Necker Island was positioned using satellite ephemeris data. Satellite imagery of Maro Reef was positioned using a combination of satellite ephemeris data and supplemental bathymetry transect data. Once maps were positioned, validation was performed by comparison to repositioned vector shoreline data depicted on recently-revised NOS nautical charts. The draft classified benthic habitat maps were reviewed by scientists in Hawaii with first-hand local knowledge of the Northwestern Hawaiian Islands. Comments were received and incorporated into draft maps. Draft maps also underwent a statistics-based accuracy assessment.
High resolution satellite imagery was analyzed using rule-based, semi-automated, digital image analysis techniques to produce benthic habitat maps of the Northwestern Hawaiian Island. Following careful evaluation of the digital satellite imagery, selected sites were visited in the field for typological validation. This validation included: (1) areas in the satellite imagery with confusing or difficult to interpret spectral signatures, (2) transects across many representative habitat types occurring in different depths and water conditions, (3) a survey of the Zones, and (4) confirmation of preliminary habitat delineations after a first draft habitat map was produced. Navigating to field sites was accomplished in a variety of ways including uploading position coordinates from the mosaic into an onboard GPS and navigating to those waypoints, using an onboard PC connected to GPS allowing navigation using digital nautical charts or the mosaic, and visual navigation using landmarks visible in the satellite imagery. On most occasions, field activities were conducted with the guidance of local experts. Satellite imagery was used in the field to facilitate comparison of signatures in the imagery to actual habitats at each site. Individual sites were visually evaluated by snorkeling and free diving or directly from the boat in shallow, clear water. Habitat transitions were evaluated by swimming transects across habitat types to further guide placement of habitat boundaries. Habitat type(s), zone, approximate depth, position (GPS), image number, and other descriptive information were recorded at each site. Field data for each site were then compiled into a text table with GPS position fields to allow overlay of the field information on the mosaic and habitat maps. Where depth and water clarity permitted, the satellite images were used to navigate across multiple bottom features allowing continuous confirmation of habitat types and transitions between each site.Process Date Range is 2001 - 2002
2002-01-01T00:00:00
Source Contribution: high resolution satellite imagery was analyzed to produce benthic habitat maps of the Northwestern Hawaiian Island | Type of Source Media: IKONOS high-resolution satellite imagery
IKONOS Panchromatic and Multispectral Imagery for the Northwestern Hawaiian Islands
2002-01-01
publication
Space Imaging
http://www.spaceimaging.com/
WWW:LINK-1.0-http--link
Source Citation URL
Source Citation URL
information
2000
2001