File:Pavonis Mons eastern flank lava tube skylight crop sharp.jpg
![File:Pavonis Mons eastern flank lava tube skylight crop sharp.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Pavonis_Mons_eastern_flank_lava_tube_skylight_crop_sharp.jpg/800px-Pavonis_Mons_eastern_flank_lava_tube_skylight_crop_sharp.jpg?20120718070521)
原始文件 (1,600 × 1,200像素,文件大小:1.27 MB,MIME类型:image/jpeg)
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摘要
[编辑]描述Pavonis Mons eastern flank lava tube skylight crop sharp.jpg |
English: This is a cropped and sharpened version of a HiRISE image of a lava tube skylight on the martian volcano Pavonis Mons. The original caption for the photo on the HiRISE web site is as follows:
This image was suggested by Dennis Mitchell's seventh grade Mars student team at Evergreen Middle School in Cottonwood, California as part of the HiRISE Quest Student Imaging Challenge. The students discovered this dark pit feature in a THEMIS image and submitted a HiRISE image suggestion to see a close-up of this feature and determine whether it might be a possible skylight cave. This image is located on the southeastern flank of Pavonis Mons, a large volcano located in the Tharsis Region of Mars. The dark, circular pit feature roughly in the middle of the image is about 180 meters at its widest diameter. The pit appears to be surrounded by small sand dunes. Although the western half of the pit is in shadow (see close-up a), the large dynamic range of the HiRISE camera allows one to see in the shadows (see close-up b). The interior of the pit consists of sediment-covered boulders that range in size from approximately 5 meters (approximately 16 ft) to less than 1 meter (approximately 3 feet) in diameter. The interior region of the pit appears to slope towards the northwest. Such pits may form from collapse of a surface "roof" below which lava may long ago have flowed, or as a result of removal of subsurface material due to erosion or extension. Written by: Evergreen Middle School and Ginny Gulick (15 June 2011) |
日期 | |
来源 | http://hirise.lpl.arizona.edu/ESP_019351_1795 |
作者 | NASA / Jet Propulsion Laboratory / University of Arizona |
许可协议
[编辑]Public domainPublic domainfalsefalse |
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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。) | ![]() |
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方向 | 正常 |
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水平分辨率 | 72 dpi |
垂直分辨率 | 72 dpi |
使用软件 | Adobe Photoshop Elements 9.0 Windows |
文件修改日期时间 | 2012年7月17日 (二) 23:49 |
色彩空间 | sRGB |
图像宽度 | 1,600 px |
图像高度 | 1,200 px |
原始文件唯一ID | xmp.did:567710FA8FB211E09FD9F66519AF7BBD |
数字化日期时间 | 2012年7月17日 (二) 23:40 |
元数据最后修改日期 | 2012年7月17日 (二) 16:49 |
IIM版本 | 38,558 |