Download 5 meter grid:
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).
Substrate(Multibeam): Preliminary hard and soft bottom seafloor substrate map derived from an unsupervised classification of gridded backscatter and bathymetry derivatives of Ni’ihau Island, Hawaii, USA.
Hard vs. Soft Substrate (Multibeam) classification data files
Substrate(World View-2), Hard bottom vs. Soft bottom – 5 meter grid
Substrate(World View-2): Preliminary hard and soft bottom seafloor substrate map derived from an supervised classification of bathymetry derived from multispectral World View-2 satellite imagery of Ni’ihau Island, Territory of Main Hawaiian Islands, USA
Hard vs. Soft Substrate (World View-2) classification data files
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.
Slope data files
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)
Rugosity data files
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.
|A visual description of BPI Structure classes (Click image for larger view.)|
BPI Structures data files
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.