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Benthic Habitat Data
Bathymetry
5m grid data
- View Metadata: Metadata text
- Zipped Data: Arc ASCII
Backscatter Imagery
Optical Validation
Geomorphology
Zipped data files contain 1) Arc ASCII file, 2) layer (.lyr) file for symbology, 3) high-res JPG of image, and 4) explanatory metadata text file (identical to linked file listed below).
5m grid data files
- Slope Arc ASCII:
Metadata text • Zipped data - Rugosity Arc ASCII:
Metadata text • Zipped data - BPI Structures Arc ASCII:
Metadata text • Zipped data - BPI Zones Arc ASCII:
Metadata text • Zipped data
Home > DATA SETS: CNMI-Guam >Submerged Banks >Galvez Bank > Geomorphology
CNMI-Guam: Galvez Bank & Eleven Mile Bank
[ Bathymetry | Backscatter | Optical Validation | Geomorphology ]
Gridded Geomorphology
Download 5 meter grid:
Slope, Rugosity, BPI Structures, BPI Zones
Click here for a Discussion of Geomorphological Layers
Zipped data files contain 1) Arc ASCII file, 2) layer (.lyr) file for symbology, 3) high-res JPG of image, and 4) explanatory metadata text file (identical to linked file listed below).
5 Meter Grids
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.
Download this image as a high-res JPG or PDF
Slope data files
- Arc ASCII: Metadata text • Zipped data
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Rugosity - 5 meter grid
Rugosity: Cell values reflect the surface area and (surface area) / (planimetric area) ratio for the area contained within that cell’s boundaries. They provide indices of topographic roughness and convolutedness. (Jenness 2003)
Download this image as a high-res JPG or PDF
Rugosity data files
- Arc ASCII: Metadata text • Zipped data
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BPI Structures - 5 meter grid
BPI Structures: Derived from two scales of BPI, slope and depth. Broad and fine-scalefactors of BPI used were 150 and 30 for Galvez Bank and South Galvez Bank, and 150 and 50 for Eleven-mile Bank. Three ranges of slope defined flats, slopes and near vertical: x < 5; 5 < x < 70. Depth alone, in this case, is added only to separate flat structures into shelf (<30 m) and broad flat (>30 m) environments (depths based on SCUBA limits).
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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: BPI Zones: Derived from a broad scale (150) BPI grid and slope. Two ranges of slope defined flats and slopes: x < 5 and 5 < x < 70.
Download this image as a high-res JPG or PDF
BPI Zones data files
- Arc ASCII: Metadata text • Zipped data
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Public Outreach | The School | Site Map | Contact SOEST| Comments or questions about this page go to pibhmc@soest.hawaii.edu. Last update Monday Nov. 14th, 2011.