In Alaska scientists are collecting permafrost temperatures from more than 350 sites, ranging from the surface to 100 meters below ground, measuring factors impacting throwing such as precipitation.

拉斯加,科学家正
收集三百五十多个地点的永久冻土温度,范围从地表到地下一百米,测量影响抛掷的因素,如降雨量。