尼泊尔山体滑坡引发洪水：卫星影像揭示冰川与气候变化关联

3 to 5 meters. But there was a problem: In the few available images of the mountains where the seismic signal originated, there were “very strategically placed inconvenient clouds,” Cook says. What could be clearly seen was a sharp edge, at about 5200 meters above sea level, where a glacier that blanketed the mountain had snapped off. The imagery soon led to reports that the explanation was a glacial collapse: A thick layer of ice had slid off the underlying rock, potentially because of warming at its bottom-most layer, until it crashed into the valley below. …