Kim space

原文網址：

http://earthobservatory.nasa.gov/IOTD/view.php?id=52119

acquired September 5, 2011

acquired September 6, 2009

一、               原文和翻譯

A prominent lava flow descends the eastern flank of Kamchatka’s Kizimen Volcano in this false-color satellite image acquired on September 5, 2011 (top). An image of the peak from September 6, 2009 (lower), shows the extent of the changes that have occurred since Kizimen began erupting in late 2010.

在2011年九月五日，空照衛星拍到：一道顯著的熔岩流流向了堪察加半島的Kizimen火山東側。對照2009年九月六日所拍到的山峰圖，可以得知，自從Kizimen於2010年末開始噴發後，改變的範圍開始變大。

Volcanic deposits (colored brown) have covered much of the vegetation (red) on the slopes of the volcano, especially to the east. Likewise, material has filled rivers and streams around the volcano. A modest volcanic plume rises from Kizimen’s summit, accompanied by a smaller plume from a fumarole to the northwest.

火山坡大部分的植被(標為紅色) 被火山的沉積物(標為棕色)覆蓋住了，特別是向東的地區覆蓋更廣。同樣地，河流與小溪裡也都是火山噴出物。中性的火山熱柱伴隨著西北方噴氣孔的小熱柱，也從Kizimen的山峰升起。

These images illustrate the growth of a stratovolcano: layers of lava flows alternate with layers of “volcanic ash, cinders, blocks, and bombs.” Unlike fluid hawaiian-style lava, the flow on Kizimen is a block-lava flow, so viscous it’s almost solid. As the flow slowly advances down the east side of the volcano, the surface crumbles, sending boulders, rocks, pebbles, and other material tumbling into the valley below.

In less than a year, this rubble piled high enough to block several drainages, and a new lake was formed. Ash and fine sediment color the lake brilliant blue, in contrast to the nearly black shade of the lake in 2009. Famous stratovolcanoes include Mount St. Helens, Mount Fuji, and Popocatepetl.

These images were acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) aboard the Terra satellite.