Zipped data files contain 1) grid data file (GMT or ASCII), 2) high-res JPG/PDF of image, and 3) explanatory metadata text file (identical to linked file listed below).
Zipped data files contain 1) Arc ASCII file, 2) layer (.lyr) file for symbology, 3) high-res JPG/PDF of image, and 4) explanatory metadata text file (identical to linked file listed below).
Home > DATA SETS: NWHI >Pearl and Hermes >Geomorphology
Click here for a Discussion of Geomorphological Layers
Zipped data files contain 1) Arc ASCII or GeoTIFF file, 2) layer (.lyr) file for symbology, 3) high-res JPG/PDF of image, and 4) explanatory metadata text file (identical to linked file listed below).
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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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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BPI Structures: Derived from two scales (20 & 250) of BPI; slope; and depth. Three ranges of slope defined flats, slopes and near vertical: x < 5; 5 < x < 70.
A visual description of BPI Structure classes (Click image for larger view.) |
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BPI Zones: Derived from a broad scale (250) BPI grid and slope. Two ranges of slope defined flats and slopes: x < 5 and 5 < x < 70.
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