Paul C. Hackley Franco Urbani Christopher P. Garrity 2004 <p>The digital shaded relief map of Venezuela is a composite of 3-arc-second (approximately 90-meter) elevation data, captured during the Shuttle Radar Topography Mission (SRTM) in February 2000. The SRTM, a joint project between the National Geospatial-Intelligence Agency (NGA) and the National Aeronautics and Space Administration (NASA), provides the most comprehensive international digital elevation dataset ever produced. The 11-day flight mission aboard the U.S. Space Shuttle Endeavour obtained elevation data for about 80% of the world's landmass through the use of single-pass Interferometric Synthetic Aperture Radar (InSAR) technology.</p><p>This publication includes a colorized relief image of Venezuela (GeoTIFF format) and the elevation data (ESRI Grid format) used for rendering the image. These datasets are intended to accompany U.S. Geological Survey Open-File Report 2005–1038 (<a href="http://pubs.usgs.gov/of/2005/1038/" data-mce-href="http://pubs.usgs.gov/of/2005/1038/">http://pubs.usgs.gov/of/2005/1038/</a>) and U.S. Geological Survey Data Series 199 (<a href="http://pubs.usgs.gov/ds/2006/199/" data-mce-href="http://pubs.usgs.gov/ds/2006/199/">http://pubs.usgs.gov/ds/2006/199/</a>). SRTM data in version 2.0 have been processed using the latest data-void filling algorithms and represent a significant improvement to the data used in version 1.0.</p> application/pdf 10.3133/ofr20041322 en U.S. Geological Survey Digital shaded-relief map of Venezuela reports