Miles Anderson, Analytical Laboratories of Hawaii, 200709, Benthic Habitats of Hawaii Derived From IKONOS and Quick Bird Satellite Imagery, 2004-2007: Analytical Laboratories of Hawaii, Kailua, Hawaii.This is part of the following larger work.Online Links:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch, 2007, Benthic Habitats of the Main Hawaiian Islands prepared form IKONOS and Quick Bird Satellite Imagery: BAE Systems Spectral Solutions, Honolulu, HI.
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Planar coordinates are encoded using Coordinate Pair
Abscissae (x-coordinates) are specified to the nearest 0.000256
Ordinates (y-coordinates) are specified to the nearest 0.000256
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257222.
Coordinates defining the features.
| Formal codeset | |
|---|---|
| Codeset Name: | Habitat description |
| Codeset Source: | Habitat classification scheme for the Pacific |
Incremental numeric field
| Range of values | |
|---|---|
| Minimum: | 7.560 |
| Maximum: | 627256256.604 |
| Units: | square meters |
| Range of values | |
|---|---|
| Minimum: | 11.172 |
| Maximum: | 458799.983 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 0.002 |
| Maximum: | 154995.021 |
| Units: | acres |
Assigned during digitizing character field
Assigned during digitizing character field
Assigned during digitizing
Assigned during digitizing character field
Assigned during digitizing character field
Character field
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301-713-4384 (FAX)
tim.battista@noaa.gov
The National Ocean Service is conducting a map production effort 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.
NOS NCCOS CCMA Biogeography Branch, 2007, Classification Scheme for Benthic Habitats of the Pacific: NOAA's Ocean Service, National Centers for Coastal Ocean Science (NCCOS), Silver Spring, MD.
Buja, Ken, 2003, Coral Reef Digitizing Extension: NOAA's Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Silver Spring, MD.Online Links:
GeoEye (formerly Space Imaging Inc.) / Digital Globe, 2007, IKONOS Satellite Imagery / QuickBird Satellite Imagery: GeoEye (formerly Space Imaging Inc.) / Digital Globe, Thornton, CO / Longmont, CO.Online Links:
All remotely sensed imagery was processed by BAE prior to map production. The imagery was corrected for atmospheric and water column effects, pan sharpened and deglinted. During the digitizing process, images were stretched and contrast, brightness and color balance were modified using the Arc View Image Analysis Extension to enhance features in the processed imagery.
A first draft map was completed and features in the imagery where uncertainties existed, due to confusing or difficult to interpret signatures, were identified for future ground validation effort. An ArcView GIS point theme was generated with points positioned on the features of uncertain habitat type or along transects though gradients between habitat types. The GIS points were converted to GPS waypoints using Trimble Pathfinder Software and were navigated to in the field using a Trimble GeoExplorer 3 GPS data logger.
A benthic habitat characterization was conducted at each site by use of a tethered video camera snorkeling, free diving, or where water depth and clarity permitted, by observation from the surface. GPS data were collected at each location and site ID, depth, habitat type, zone and the method used to make the assessment were recorded. A second draft of the map was generated incorporating these field observations.
This GIS polygon product was generated from a subset of fourteen image bundles which, when combined, constitute approximately 85% of the Main Eight Hawaiian Islands. A statistical analysis that generates a Tau statistic was conducted. The Tau statistic for the major classes of structure and cover is 0.971 and 0.908 respectively. The Tau statistic for detailed structure and cover classes is 0.891 and 0.827 respectively.
RMS from digitized output was determined using the ESRI RMEer2 extension and shown to be <1m for this work.
BAE Systems acquired, processed and delivered ortho-rectified imagery to Analytical Laboratories of Hawaii. Delineation of all habitat boundaries was conducted with the image scale at 1:6,000 or less. This ensures that the level of detail produced by the photo interpreter is uniform throughout the project. The minimum mapping unit (MMU) for identifying habitats or features was 1 acre or less. The software utilized in this project was designed to alert the photo interpreter each time a polygon was drawn smaller than the a MMU of 1 acre. When this occurred the photo interpreter has the choice whether to include the polygon in the data set. Only in areas where local coral reef managers expressed interest in specific map classes or in Marine Protected Areas or for areas of land were polygons of smaller then the MMU allowed.
All mapping was conducted from ortho-rectified IKONOS and QuickBird satellite imagery provided by BAE prior to map production. IKONOS and Quick Bird satellite imagery was corrected for atmospheric and water column effects, color balanced, pan sharpened and deglinted. During the digitizing process, image stretches and manipulating image contrast, brightness and color balance were performed in the ArcView Image Analysis Extension to enhance features in the processed imagery.
GIS topologic quality was established by executing ArcView extension routines that check for: overlapping polygons, multipart polygons, sliver polygons and void polygons. Additionally checks for adjacent polygons with the same habitat attributes were completed. All errors were identified and corrected. This file is believed to be logically consistent.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints: Not for navigation
301-713-3028 (voice)
301-713-4384 (FAX)
tim.battista@noaa.gov
Downloadable Data
The National Oceanic and Atmospheric Administration (NOAA) National Centers for Coastal Ocean Science (NCCOS) intends to publish this data on CD-ROM. NCCOS Biogeography Branch does not guarantee the accuracy of the geographic features or attributes. Please see the metadata records for each data set for complete information on the source, limitations, and proper use.
Contact NOAA for distribution options (see Distributor).
301-713-3028 (voice)
301-713-4384 (FAX)
tim.battista@noaa.gov