Parallel linear cracks are also observed along the crater wall over the gullies, which could be due to thermalcontraction of ice-rich material.
在陨石坑口壁上也发现了并行线一样的裂缝,这可能是由于含冰物质热收缩现象造成的。
2
A large number of ice wedges have been found active in the environment that convertionally would be regarded as too warm for thermalcontraction cracking and ice wedge development.
在过去认为不会有冰楔活动的地区,发现了新生的和正在活动的冰楔。
3
The effects of thermal circling on the curve of heat expansion and cold contraction are investigated.