It's not 100 percent clear why some glaciers surge and others don't.

“目前还不能百分之百地确定为何有些冰川会突然增速，而其他冰川却不会。”

Sure enough, surging glaciers hotspots are in temperate-latitude mountains, such as Karakoram, and at lower altitudes, like Svalbard.

果然，涌动的冰川热点位于喀喇昆仑、等温带山区和斯瓦尔巴群岛等低海拔地区。