Source Index Map Layer for High-Resolution Orthorectified Imagery from Approximately 1990, Niwot Ridge LTER Project Area, Colorado

Citation Manley, W.F., Parrish, E.G., and Lestak, L.R., 2009,
High-Resolution Orthorectified Imagery and Digital Elevation Models for Study of
Environmental Change at Niwot Ridge and Green Lakes Valley, Colorado: Niwot
Ridge LTER, INSTAAR, University of Colorado at Boulder, digital media. This vector shapefile is a source index map layer for the mosaic of orthorectified
aerial photography from 1988 and 1990 for the Niwot Ridge Long Term Ecological
Research (LTER) project. The index also covers the Green Lakes Valley portion of the
Boulder Creek Critical Zone Observatory (CZO). The index polygons are attributed
with source photo date and photo year. The mosaic is derived from approx. 1:40,000
scale, color infrared (CIR) photographs acquired by the United States Geological
Survery (USGS) National Aerial Photography Program (NAPP). Other datasets available
in this series includes orthorectified aerial photograph mosaics (for 1953, 1972,
1985, approximately 1990, 1999, 2000, 2002, 2004, 2006 and 2008), digital elevation
models (DEM's), and accessory map layers. Together, the DEM's and imagery will be of
interest to students, research scientists, and others for observation and analysis
of natural features and ecosystems. NOTE: This EML metadata file does not contain important geospatial data processing
information. Before using any NWT LTER geospatial data read the arcgis metadata XML
file in either ISO or FGDC compliant format, using ArcGIS software (ArcCatalog >
description), or by viewing the .xml file provided with the geospatial
dataset.