File:PIA21136 Scalloped Terrain Led to Finding of Buried Ice on Mars.jpg
PIA21136_Scalloped_Terrain_Led_to_Finding_of_Buried_Ice_on_Mars.jpg (640 × 398像素,文件大小:57 KB,MIME类型:image/jpeg)
说明
摘要
[编辑]描述PIA21136 Scalloped Terrain Led to Finding of Buried Ice on Mars.jpg |
English: This vertically exaggerated view shows scalloped depressions in Mars' Utopia Planitia region, one of the area's distinctive textures that prompted researchers to check for underground ice, using ground-penetrating radar aboard NASA's Mars Reconnaissance Orbiter.
More than 600 overhead passes with the spacecraft's Shallow Radar (SHARAD) instrument provided data for determining that about as much water as the volume of Lake Superior lies in a thick layer beneath a portion of Utopia Planitia. These scalloped depressions on the surface are typically about 100 to 200 yards or meters wide. The foreground of this view covers ground about one mile (1.8 kilometers) across. The perspective view is based on a three-dimensional terrain model derived from a stereo pair of observations by the High Resolution Imaging Science Experiment (HiRISE) camera on the Mars Reconnaissance Orbiter. One was taken on Dec. 25, 2006, the other on Feb. 2, 2007. The vertical dimension is exaggerated fivefold in proportion to the horizontal dimensions, to make texture more apparent in what is a rather flat plain. Similar scalloped depressions are found in portions of the Canadian Arctic, where they are indicative of ground ice. The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington. |
日期 | (published 2016年11月22日) |
来源 | Catalog page · Full-res (JPEG · TIFF) |
作者 | NASA/JPL-Caltech/Univ. of Arizona |
此标签不表示文件的著作权状态。任何文件在附有此标签的同時还需要一个有效的著作权标签。请参阅许可协议说明页面以了解更多信息。 其他语言:
العربية ∙ беларуская (тарашкевіца) ∙ български ∙ català ∙ čeština ∙ dansk ∙ Deutsch ∙ English ∙ español ∙ فارسی ∙ français ∙ galego ∙ magyar ∙ հայերեն ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ македонски ∙ മലയാളം ∙ Nederlands ∙ polski ∙ português ∙ русский ∙ sicilianu ∙ slovenščina ∙ Türkçe ∙ українська ∙ 简体中文 ∙ 繁體中文 ∙ +/− |
This media is a product of the Mars Reconnaissance Orbiter mission Credit and attribution belongs to the High Resolution Imaging Science Experiment (HiRISE) team, NASA/JPL-Caltech/Univ. of Arizona |
许可协议
[编辑]Public domainPublic domainfalsefalse |
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/zh、NASA版权方针页面或JPL图片使用方针。) | ||
警告:
|
文件历史
点击某个日期/时间查看对应时刻的文件。
日期/时间 | 缩略图 | 大小 | 用户 | 备注 | |
---|---|---|---|---|---|
当前 | 2016年11月23日 (三) 22:05 | 640 × 398(57 KB) | Drbogdan(留言 | 贡献) | User created page with UploadWizard |
您不可以覆盖此文件。
文件用途
以下2个页面使用本文件:
全域文件用途
以下其他wiki使用此文件:
- ar.wikipedia.org上的用途
- bn.wikipedia.org上的用途
- ca.wikipedia.org上的用途
- el.wikipedia.org上的用途
- en.wikipedia.org上的用途
- eo.wikipedia.org上的用途
- es.wikipedia.org上的用途
- he.wikipedia.org上的用途
- kk.wikipedia.org上的用途
- ms.wikipedia.org上的用途
- ru.wikipedia.org上的用途
- zh.wikipedia.org上的用途