Estimated shallow-water depth maps were produced for nine locations in the Northwestern Hawaiian Islands using rule-based, semi-automated analysis of high-resolution IKONOS satellite imagery. The project was a cooperative effort by NOAA, the State of Hawaii Department of Land and Natural Resources, and the U.S. Fish and Wildlife Service. Data was produced in support of the U.S. Coral Reef Task Force and was last updated in 2002.
Use Cases
- Modeling benthic habitat distribution using estimated depth and georeferenced imagery layers.
- Analyzing coral reef health and structure by correlating depth maps with habitat classification data.
- Calibrating other bathymetric sensors by comparing rule-based depth estimates from IKONOS imagery.
- Supporting marine spatial planning for the Northwestern Hawaiian Islands with georeferenced depth information.
Strengths
- Covers nine distinct locations within the Northwestern Hawaiian Islands archipelago.
- Derived from high-resolution IKONOS satellite imagery, providing detailed spatial data.
- Produced through a cooperative multi-agency effort (NOAA, State of Hawaii, U.S. Fish and Wildlife Service).
Limitations
- Data is from 2002 and may not reflect current bathymetric conditions due to natural changes.
- Depth maps are estimated using a rule-based, semi-automated method, not direct sonar measurements.
- Specific spatial resolution, accuracy metrics, and sample sizes are not provided in the description.
Provenance
- Source
- National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Information (NCEI).
- Collection Method
- Rule-based, semi-automated image analysis of high-resolution IKONOS satellite imagery.
- Time Range
- Imagery acquisition date(s) not specified; project data last updated 2002.
- Freshness
- Last updated in 2002; no update frequency specified.
- Geography
- Northwestern Hawaiian Islands, covering nine specific locations.