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File:PIA14470 Ice, Salt and Warm-Season Flows on Mars.jpg

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原始文件 (2,536 × 1,465像素,文件大小:777 KB,MIME类型:image/jpeg


摘要

描述
English: This map of Mars shows relative locations of three types of findings related to salt or frozen water, plus a new type of finding that may be related to both salt and water.

Coloring of the map is coded to concentrations of shallow subsurface water ice found by the Gamma Ray Spectrometer - Neutron Spectrometer on NASA's Mars Odyssey orbiter. Blue, at high latitudes north and south, indicates higher concentrations of water ice (deduced from detection of hydrogen); orange designates lowest concentrations. Some hydrogen, possibly in the form of bound water, is close to the surface even at middle latitudes.

The white squares in the northern hemisphere mark locations of small fresh impact craters that exposed water ice close to the surface and validated the neutron spectrometer data. Observations of these fresh craters were made by the Context Camera and the High Resolution Imaging Science Experiment camera on NASA's Mars Reconnaissance Orbiter.

The red squares mark locations of putative deposits of chloride based on observations by the Thermal Emission Imaging System on Mars Odyssey. Such salt deposits could have resulted from evaporation of salty water.

The blue squares mark locations of a type of feature reported in August 2011 based on sequences of observations by the High Resolution Imaging Science Experiment. The observations show relatively dark features appearing and incrementally growing down slopes during warm seasons. Researchers hypothesize that these features may result from action of briny water. Other imagery related to these new findings from the Mars Reconnaissance Orbiter is at http://www.nasa.gov/mission_pages/MRO/multimedia/gallery/gallery-index.html.
日期 (published)
来源 Catalog page · Full-res (JPEG · TIFF)
作者 NASA/JPL-Caltech/ASU/UA/LANL/MSSS
其他版本
本图像或视频收录于美国国家航空航天局 (NASA)喷气推进实验室(Jet Propulsion Laboratory),其照片编号是: PIA14470

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This media is a product of the
2001 Mars Odyssey mission
Credit and attribution belongs to the Gamma Ray Spectrometer (GRS) team, NASA/JPL-Caltech/ASU/UA/LANL/MSSS

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Public domain 本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zhNASA版权方针页面JPL图片使用方针。)
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2011-08-05 05:48 2536×1465× (795711 bytes) Surajt88 == Summary == {{Information |Description =This map of Mars shows relative locations of three types of findings related to salt or frozen water, plus a new type of finding that may be related to both salt and water. Coloring of the map is coded to con

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