PIA02775: Perspective with Landsat Overlay: Antelope Valley, California
 Target Name:  Earth
 Is a satellite of:  Sol (our sun)
 Mission:  Landsat 
Shuttle Radar Topography Mission (SRTM)
 Spacecraft:  Landsat
Space Shuttle Endeavour
 Instrument:  C-Band Interferometric Radar 
Thematic Mapper 
 Product Size:  3069 x 785 pixels (w x h)
 Produced By:  JPL
 Producer ID:  MRPS96588
 Addition Date:  2000-09-14
 Primary Data Set:  SRTM Mission
 Full-Res TIFF:  PIA02775.tif (6.207 MB)
 Full-Res JPEG:  PIA02775.jpg (500.9 kB)

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

Antelope Valley is bounded by two of the most active faults in California: the Garlock fault, which fronts the distant mountains in this view, and the San Andreas fault, part of which is seen bounding the mountains in the left foreground. In this view, Antelope Valley is in the foreground, the Tehachapi Mountains form the left skyline, and ranges within the southernmost Sierra Nevada form the right skyline. Antelope Valley is directly north of Los Angeles and is the westernmost part of the Mojave Desert. It is a closed basin. Stream flow here ends at Rosamond and Rogers dry lakes, which appear bright white. Dry lakes like these are common where tectonic activity raises and lowers parts of the Earth's crust, and thus the topographic surface, faster than stream flow can fill depressions with water, and then overflow and cut escape channels to other basins and eventually to the sea. The Sierra Nevada, the Tehachapi, and other mountains generally to the west create a rain shadow desert here. Thus, the area definitely has the active tectonics and low rainfall combination that leads to closed basin topography.

This perspective view was generated by draping a Landsat satellite image over a preliminary topographic map from the Shuttle Radar Topography Mission. Shading of the SRTM elevation model was added to enhance topographic appearance. Landsat has been providing visible and infrared views of the Earth since 1972. SRTM elevation data matches the 30 meter resolution of most Landsat images and will substantially help in analyses of the large and growing Landsat image archive.

The elevation data used in this image was acquired by the Shuttle Radar Topography Mission (SRTM) aboard the Space Shuttle Endeavour, launched on February 11, 2000. SRTM used the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) that flew twice on the Space Shuttle Endeavour in 1994. SRTM was designed to collect three-dimensional measurements of the Earth's surface. To collect the 3-D data, engineers added a 60-meter-long (200-foot) mast, installed additional C-band and X-band antennas, and improved tracking and navigation devices. The mission is a cooperative project between the National Aeronautics and Space Administration (NASA), the National Imagery and Mapping Agency (NIMA) of the U.S. Department of Defense (DoD), and the German and Italian space agencies. It is managed by NASA's Jet Propulsion Laboratory, Pasadena, CA, for NASA's Earth Science Enterprise, Washington DC.

Size: 92 kilometers (57 miles) view width, 87 kilometers (54 miles) view distance
Location: 34.9 deg. North lat., 118.3 deg. West lon.
Orientation: View toward the northwest, 3X vertical exaggeration
Image: Landsat bands 1, 2+4, 3 in blue, green, red, respectively, plus DEM shading.
Date Acquired: February 16, 2000 (SRTM), November 11, 1986 (Landsat)

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