原始文件 (3,300 × 2,200像素,文件大小:2.31 MB,MIME类型:image/jpeg


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English: Bright white clouds hover over the volcano’s summit. Clouds often collect over peaks, but these clouds could result from water vapour released by the volcano. Slightly darker in colour, a pale blue-grey plume blows west-north-west from the summit and over the Bismarck Sea. Just 10 kilometres across, Manam is a stratovolcano composed of alternating layers of ash, lava, and rocks from prior eruptions. The circular island sports four radial valleys spaced roughly 90 degrees apart, and these valleys have historically channelled lava and pyroclastic flows—composed of hot rock, gas and ash—sometimes all the way to the coast. Evidence of earlier volcanic activity appears as rivulets of rock that interrupt the vegetation coating much of the island. Although clouds hide the summit in this image, the summit is known to support two craters devoid of vegetation.
日期
来源 NASA Earth Observatory
作者 Jesse Allen

Instrument: EO-1 - ALI. The Advanced Land Imager (ALI) on-board NASA’s Earth Observing-1 (EO-1) satellite captured this photo-like image of the volcano. Image created using EO-1 ALI data provided courtesy of the NASA EO-1 Team.

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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2009年7月10日 (五) 13:562009年7月10日 (五) 13:56版本的缩略图3,300 × 2,200(2.31 MB)Originalwana{{Information |Description={{en|1=Bright white clouds hover over the volcano’s summit. Clouds often collect over peaks, but these clouds could result from water vapour released by the volcano. Slightly darker in colour, a pale blue-grey plume blows west

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