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File:Sakura-jima from space.jpg

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Sakurajima volcano and Aira Caldera from space.

Original Caption Released with Image:

The active volcano Sakura-Jima on the island of Kyushu, Japan is shown in the center of this radar image. The volcano occupies the peninsula in the center of Kagoshima Bay, which was formed by the explosion and collapse of an ancient predecessor of today's volcano. The volcano has been in near continuous eruption since 1955. Its explosions of ash and gas are closely monitored by local authorities due to the proximity of the city of Kagoshima across a narrow strait from the volcano's center, shown below and to the left of the central peninsula in this image. City residents have grown accustomed to clearing ash deposits from sidewalks, cars and buildings following Sakura-jima's eruptions. The volcano is one of 15 identified by scientists as potentially hazardous to local populations, as part of the international "Decade Volcano" program.

The image was acquired by the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) onboard the space shuttle Endeavour on October 9, 1994. SIR-C/X-SAR, a joint mission of the German, Italian and the United States space agencies, is part of NASA's Mission to Planet Earth. The image is centered at 31.6 degrees North latitude and 130.6 degrees East longitude. North is toward the upper left. The area shown measures 37.5 kilometers by 46.5 kilometers (23.3 miles by 28.8 miles). The colors in the image are assigned to different frequencies and polarizations of the radar as follows: red is L-band vertically transmitted, vertically received; green is the average of L-band vertically transmitted, vertically received and C-band vertically transmitted, vertically received; blue is C-band vertically transmitted, vertically received.
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来源 en:File:Sakura-jima from space.jpg
作者 NASA/JPL-Caltech
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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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当前2007年7月17日 (二) 14:532007年7月17日 (二) 14:53版本的缩略图3,000 × 3,716(3.15 MB)GDK
2006年10月16日 (一) 12:152006年10月16日 (一) 12:15版本的缩略图518 × 642(114 KB)PazuzuSakurajima volcano from space Copied from [http://en.wikipedia.org/wiki/Image:Sakura-jima_from_space.jpg en wiki] image description [http://photojournal.jpl.nasa.gov/catalog/PIA01777 here] larger version [http://photojournal.jpl.nasa.gov/jpeg/PIA01777.

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