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Abstract
The Santa Rita Experimental Range (SRER) digital database was developed to automate and preserve ecological data and increase their accessibility. The digital data holdings include a spatial database that is used to integrate ecological data in a known reference system and to support spatial analyses. Recently, the Advanced Resource Technology (ART) facility has added three new Federal geographic data products to this spatial database. U.S. Geological Survey (USGS) digital raster graphics (DRG) are scanned images of USGS topographic maps. Digital orthophoto quarter quads (DOQQ) are computer-generated images of aerial photographs that have been registered to a coordinate system and ortho-rectified. Digital elevation models (DEM) are georeferenced arrays of regularly spaced elevation values. A product description, production methodology discussion, and file format description is provided for each product. The applications of these products include reference mapping, spatial analysis, and data visualization. A sample image of each of these products is provided. These data represent an ongoing commitment to providing researchers with accurate, up-to-date, and relevant data products to support research on the SRER. Products that will be derived from these sources include slope aspect, land slope, and hillshade layers. Improved Federal geographic data products will be added to the database as they become available.
Parent Publication
Citation
Wissler, Craig; Angell, Deborah. 2003. New data sources and derived products for the SRER digital spatial database. In: McClaran, Mitchel P.; Ffolliott, Peter F.; Edminster, Carleton B., tech. coords. Santa Rita Experimental Range: 100 years (1903 to 2003) of accomplishments and contributions; conference proceedings; 2003 October 30-November 1; Tucson, AZ. Proc. RMRS-P-30. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 193-197.
