File:PIA11704 - Pits and Channels of Hebrus Valles.jpg
原始檔案 (4,500 × 3,000 像素,檔案大小:2.43 MB,MIME 類型:image/jpeg)
摘要
描述PIA11704 - Pits and Channels of Hebrus Valles.jpg |
English: The drainages in this image are part of Hebrus Valles, an outflow channel system likely formed by catastrophic floods.
Hebrus Valles is located in the plains of the Northern lowlands, just west of the Elysium volcanic region. Individual channels range from several hundred meters to several kilometers wide and form multi-threaded (anastamosing) patterns. Separating the channels are streamlined forms, whose tails point downstream and indicate that channel flow is to the north. The channels seemingly terminate in an elongated pit that is approximately 1875 meters long and 1125 meters wide. Using the shadow that the wall has cast on the floor of the pit, we can estimate that the pit is nearly 500 meters deep. The pit, which formed after the channels, exposes a bouldery layer below the dusty surface mantle and is underlain by sediments. Boulders several meters in diameter litter the slopes down into the pit. Pits such as these are of interest as possible candidate landing sites for human exploration because they might retain subsurface water ice (Schulze-Makuch et al. 2016, 6th Mars Polar Conf.) that could be utilized by future long-term human settlements. 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 | 25 October 2016 (published 26 January 2017) |
來源 | Catalog page · Full-res (JPEG · TIFF) |
作者 | NASA/JPL-Caltech/Univ. of Arizona |
火星上的位置 | 22° 07′ 40.8″ 北, 125° 15′ 57.6″ 東 | 位於此地的本圖片與其他圖片: Google地图 | 22.128000; 125.266000 |
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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 |
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Public domainPublic domainfalsefalse |
本作品由NASA創作,屬於公有領域。根據NASA的版權政策:“NASA的創作除非另有聲明否則不受版權保護。”(參見:Template:PD-USGov/zh,NASA版權政策或JPL圖像使用政策) | ||
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水平解析度 | 72 dpi |
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垂直解析度 | 72 dpi |
亮度與彩度位置 | 中間 |
Exif 版本 | 2.21 |
每像素內含 |
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支援的 Flashpix 版本 | 1 |
色彩空間 | sRGB |
場景拍攝類型 | 標準 |