File:PIA17655 Kraken Mare crop no labels.jpg
![File:PIA17655 Kraken Mare crop no labels.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/2/29/PIA17655_Kraken_Mare_crop_no_labels.jpg/443px-PIA17655_Kraken_Mare_crop_no_labels.jpg?20140220051849)
原始文件 (2,548 × 3,448像素,文件大小:9.96 MB,MIME类型:image/jpeg)
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[编辑]描述PIA17655 Kraken Mare crop no labels.jpg |
English: This is a segment of a colorized mosaic from NASA's Cassini mission that shows the most complete view yet of Titan's northern land of lakes and seas. Saturn's moon Titan is the only world in our solar system other than Earth that has stable liquid on its surface. The liquid in Titan's lakes and seas is mostly methane and ethane.
Seas and major lakes are labeled in the annotated version. The data were obtained by Cassini's radar instrument from 2004 to 2013. In this color scheme, liquids appear blue and black depending on the way the radar bounced off the surface. Land areas appear yellow to white. Kraken Mare, Titan's largest sea, is the body in black and blue that sprawls from just below and to the right of the north pole down to the bottom. Most of the bodies of liquid on Titan occur in the northern hemisphere. In fact nearly all the lakes and seas on Titan fall into a box covering about 600 by 1,100 miles (900 by 1,800 kilometers). Only 3 percent of the liquid at Titan falls outside of this area. Scientists are trying to identify the geologic processes that are creating large depressions capable of holding major seas in this limited area. A prime suspect is regional extension of the crust, which on Earth leads to the formation of faults creating alternating basins and roughly parallel mountain ranges. This process has shaped the Basin and Range province of the western United States, and during the period of cooler climate 13,000 years ago much of the present state of Nevada was flooded with Lake Lahontan, which (though smaller) bears a strong resemblance to the region of closely packed seas on Titan. An unannotated version and a version with explanatory text are also available in Figures 1 and 2. A related flyover can be seen at PIA17656. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, DC. The Cassini orbiter was designed, developed and assembled at JPL. The radar instrument was built by JPL and the Italian Space Agency, working with team members from the United States and several European countries. For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov and http://www.nasa.gov/cassini. The original NASA image has been modified by rotating 40 deg. clockwise, cropping to show primarily Kraken Mare, and removing the labels. Some of the features in this image have been annotated in Wikimedia Commons.Polski: Mapa radarowa Kraken Mare - stan wiedzy z 2013 r. Obraz powstał przez obrócenie mozaiki PIA 17655 (zob. File:PIA17655 crop Titan north polar seas and lakes.jpg) o 40 stopni, aby północ była na górze i przycięcie dla ukazania obszaru Kraken Mare i Jingpo Lacus (podłużne jezioro u góry po lewej). |
日期 | |
来源 | http://photojournal.jpl.nasa.gov/catalog/PIA17655 |
作者 | NASA / JPL-Caltech / Agenzia Spaziale Italiana / USGS |
其他版本 | PIA17655 Kraken Mare crop.jpg - Version with labels |
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[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 | 299.9994 dpi |
垂直分辨率 | 299.9994 dpi |
使用软件 | Adobe Photoshop Elements 9.0 Windows |
文件修改日期时间 | 2014年2月19日 (三) 21:05 |
色彩空间 | sRGB |
图像宽度 | 2,548 px |
图像高度 | 3,448 px |
数字化日期时间 | 2014年2月19日 (三) 19:52 |
元数据最后修改日期 | 2014年2月19日 (三) 13:05 |
原始文件唯一ID | xmp.did:2D5D3C63EB99E31183D1C91156286D1F |