GRANIT Metadata for Impervious Surfaces in Coastal New Hampshire - 2000
GRANIT Metadata for Impervious Surfaces in Coastal New Hampshire - 2000
Title:
Impervious Surfaces in Coastal New Hampshire - 2000
Time Period of Content:
09/27/2000
Initial Publication Date: 12/31/2002
Originator: Complex Systems Research Center, University of New Hampshire
Abstract:
Impervious surface acreage estimates for 2000 were developed for 48 towns in
coastal NH, including the 43 towns within the designated Zones A and B of the
NH Estuaries Project Area. Data were developed using a combination of subpixel
and traditional image classification techniques applied to Landsat 7 Enhanced
Thematic Mapper (ETM+) imagery. Additionally, road centerline data from the
NH Department of Transportation were "burned in" to the data to capture narrow,
linear features where pavement exists.
Impervious surface acreage is mapped in percent ranges by individual grid
cell. Users may generate area estimates by factoring the cell size
(8742.25 sq. ft. or .2 acres) by the low, midpoint, or high end of the
assigned range.
Two related data sets, Impervious Surfaces in Coastal New Hampshire - 1990
and Impervious Surfaces in Coastal New Hampshire - 2005, are also available.
Derived from similar data and using similar techniques, they provide
prior and subsequent estimates of impervious surface coverage.
Theme Keywords: Impervious Surfaces, Land Cover, Land Use, Water Quality, Remote Sensing, Classification, Subpixel
