Shrnutí

Popis

Color infrared (CIR) aerial photographs were acquired as baseline imagery data to produce vegetation spatial database coverages of Indiana Dunes National Lakeshore (INDU) and environs. The aerial photos were collected on October 21, 2004 and October 24, 2004 at a scale of 1:12,000 to capture peak fall leaf phenology. The U.S. Geological Survey (USGS) Upper Midwest Environmental Sciences Center (UMESC) of La Crosse, Wisconsin has produced spatially referenced aerial photo mosaic images of the aerial photographs for the East Unit, West Unit with Calumet Prairie, Pinhook Bog, Heron Rookery, Hobart Prairie Grove, and Hoosier Prairie units and their environs. The photo mosaics are raster datasets compressed with MrSID (LizardTech), projected in Universal Transverse Mercator (UTM), Zone 16, using the North American Datum of 1983 (NAD83).