Benthic Habitat Data

Bathymetry

The Main Hawaiian Islands bathymetric data synthesis is maintained by the Hawaii Mapping Research Group (HMRG). More information...

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Main Hawaiian Islands: Hawai'i ("Big Island") 

[ Bathymetry | Backscatter | Optical Validation | Geomorphology ]

Optical Validation

The collection and analysis of photographic data to ground truth and interpret multibeam data layers with the goal of characterizing seafloor habitats.

Kawaihae to Anaeho'omalu Bay, Hawai'i: North Area | Coral Cover Map


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Kawaihae to Anaeho'omalu Bay, Hawai'i: South Area | Coral Cover Map


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Descriptions of optical data products.

Download: Accessory Files

These maps above display optical validation observation locations and percent coverage of scleractinian coral overlaid on bathymetry and landsat imagery northwest of Hawai'i island. Optical data were collected by CRED TOAD camera sled from the NOAA survey launch R/V AHI during cruise SB1207.

The optical data are classified by substrate type, type of live growth on bottom, geomorphic zone, and the size and abundance of holes in the substrate. Although what we show here is the percentage of coral, the shapefiles contain data on all those categories, enabling users to map the occurrence of any combination of characteristics that are included in the classification scheme. (See sidebar for shapefiles.)

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