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  The scale of the dramatic collapse of the Indonesian volcano that led to last Saturday’s devastating tsunami in the Sunda Strait is becoming clear.

  研究人员对巽他海峡中的印尼火山发生剧烈崩塌的规模的估量正在变得越来越清晰,该火山爆发导致了上周六的毁灭性海啸。

  Researchers have examined satellite images of Anak Krakatau to calculate the amount of rock and ash that sheared off into the sea.

  研究人员检查了喀拉喀托火山的卫星图像,从而计算崩塌到海中的岩石和灰烬的规模。

  They say the volcano has lost more than two-thirds of its height and volume during the past week.

  他们说,该火山在过去一周里失去了超过三分之二的高度和体积。

  Much of this missing mass could have slid into the sea in one movement.

  大部分缺失的山体很可能一次全部中滑入大海。

  It would certainly explain the displacement of water and the generation of waves up to 5m high that then inundated the nearby coastlines of Java and Sumatra.

  这肯定可以解释为什么水发生了位移,并造成高达5米的波浪,甚至还淹没了爪哇岛和苏门答腊岛附近的海岸线。

  Indonesia’s disaster agency says more than 400 people are confirmed dead with 20 or so still missing. In excess of 40,000 have been displaced.

  印度尼西亚的减灾中心表示,已确认有超过400人死亡,其中20人左右仍然失踪。 超过40000人流离失所。

  The Centre of Volcanology and Geological Hazard Mitigation (PVMBG) has been studying pictures from a number of radar satellites, including the European Union’s Sentinel-1 constellation and the German TerraSAR-X platform.

  火山学和地质灾害减缓中心(PVMBG)一直在研究来自多个雷达卫星的图片,这些卫星包括欧盟的Sentinel-1星座和德国的TerraSAR-X平台。

  What was once a volcanic cone standing some 340m high is now just 110m tall, says the PVMBG.

  PVMBG称,这座火山曾经340米高,现在只有110米。

  In terms of volume, 150-170 million cubic metres of material has gone, leaving only 40-70 million cubic metres still in place.

  在容积方面,1.5-1.7亿立方米的火山物已经消失了,仅剩下4000-7000万立方米。

  Quite how much mass was lost on 22 December itself and how much in the following days is unknown. Scientists may have a better idea once they have had a chance to visit the volcano and conduct more extensive surveys.

  在12月22日的火山爆发中,究竟损失了多少山体质量,以及接下来几天内损失了多少质量仍然未知。 一旦科学家有机会参观这座火山并进行更广泛的调查,他们就可能会有更多了解。

  But with the eruptions still ongoing and a safety exclusion zone in force - no-one is going near Anak Krakatau.

  但因为火山爆发仍在继续,这里已经是安全禁区 - 现在,没有人能够靠近喀拉喀托火山。

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