[ Bathymetry | Backscatter | Optical Validation | Benthic Habitat | Geomorphology ]
Substrate, Hard bottom vs. Soft bottom – 40 meter grid
Substrate :This is a preliminary product derived from an unsupervised classification of multibeam bathymetric data derivatives and multibeam backscatter data. Cell values reflect whether the seafloor is hard or soft. Please see the metadata for additional information.
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Hard vs. Soft substrate classification data files
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Substrate, Hard bottom vs. Soft bottom – 5 meter grid
Substrate :This is a preliminary product derived from an unsupervised classification of multibeam bathymetric data derivatives and multibeam backscatter data. Cell values reflect whether the seafloor is hard or soft. Please see the metadata for additional information.
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Hard vs. Soft substrate classification data files
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Integrated Substrate, Hard bottom vs. Soft bottom – 5 meter grid
Integrated Substrate : Hard and soft seafloor substrate map, derived from integrating two existing map products: hard and soft substrate maps derived from an unsupervised classification of multibeam backscatter and bathymetry derivatives.
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Integrated Hard vs. Soft Substrate Classification data files
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Slope – 5 meter grid
Slope: Cell values reflect the maximum rate of change (in degrees) in elevation between neighboring cells. Slope was derived with the ArcGIS Spatial Analyst extension.
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Slope data files
- Arc ASCII: Metadata text • Zipped data
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Rugosity – 5 meter grid
Rugosity: Cell values reflect the surface area / planimetric area ratio for the area contained within that cell’s boundaries. They provide indices of topographic roughness and convolutedness. (Jenness 2003)
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Rugosity data files
- Arc ASCII: Metadata text • Zipped data
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BPI Structures – 5 meter grid
BPI Structures: Derived from two scales (30 & 200) of BPI; slope; and depth. Three ranges of slope defined flats, slopes and near vertical: x < 5; 5 < x < 70.
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| A visual description of BPI Structure classes (Click image for larger view.) |
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BPI Structures data files
- Arc ASCII: Metadata text • Zipped data
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BPI Zones – 5 meter grid
BPI Zones: Derived from a broad scale (200) BPI grid and slope. Two ranges of slope defined flats and slopes: x < 5 and 5 < x < 70.
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BPI Zones data files
- Arc ASCII: Metadata text • Zipped data