File:Kaiser Crater Dunes (PIA25802).tiff
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[edit]DescriptionKaiser Crater Dunes (PIA25802).tiff |
English: Context image This VIS image is located in Kaiser Crater and shows several regions of sand dunes located on the southern part of the crater floor. The crater floor is visible between the dunes, indicating that there is a limited sand supply creating the dunes. These dunes are composed of basaltic sand that has collected in the bottom of the crater. The topographic depression of the crater forms a sand trap that prevents the sand from escaping. Dune fields are common in the bottoms of craters on Mars and appear as dark splotches that often lean up against the downwind walls of the craters. Dunes are useful for studying both the geology and meteorology of Mars. The sand forms by erosion of larger rocks, but it is unclear when and where this erosion took place on Mars or how such large volumes of sand could be formed. Local winds continue to move the sand dunes across the crater floor. There are two sides to a dune, the low angle slope of the windward face and the high angle slope of the leeward side. The steep side is called the slip face. Wind blows sand grains up the low angle slope of the dunes which then "fall down" the slip face. In this way the whole dune moves towards the slip face. The winds blow from the windward to the leeward side of the dunes. In this image the slip faces are on the left side of the dune, so the dunes are slowly moving to the left side of this image. Kaiser Crater is 207km in diameter (129 miles) and is located in Noachis Terra west of Hellas Planitia. Orbit Number: 92902 Latitude: -47.3127 Longitude: 19.2697 Instrument: VIS Captured: 2022-11-23 20:18 Please see the THEMIS Data Citation Note for details on crediting THEMIS images. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. |
Date | (published) |
Source | Catalog page · Full-res (JPEG · TIFF) · Full-res ([ MP4]) · Full-res ([ GIF]) |
Author | NASA/JPL-Caltech/ASU |
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This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA25802. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Other languages:
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This media is a product of the 2001 Mars Odyssey mission Credit and attribution belongs to the Thermal Emission Imaging System (THEMIS) team, NASA/JPL-Caltech/ASU |
Licensing
[edit]The copyright holder of this file, NASA/JPL-Caltech, allows anyone to use it for any purpose, provided that the copyright holder is properly attributed. Redistribution, derivative work, commercial use, and all other use is permitted. | |
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current | 13:45, 8 August 2023 | 591 × 2,729 (703 KB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://photojournal.jpl.nasa.gov/tiff/PIA25802.tif via Commons:Spacemedia |
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Width | 591 px |
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Height | 2,729 px |
Bits per component | 8 |
Compression scheme | LZW |
Pixel composition | Black and white (Black is 0) |
Number of components | 1 |
Number of rows per strip | 1 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | VICAR Program VTIFF |
File change date and time | 08:47, 14 February 2023 |