川西螺髻山冰川侵蚀地貌研究

Research on Glacial Erosional Landforms: Case Study of Luojishan Mt. Western Sichuan

定量分析发现影响该地区冰斗形态的因素有海洋性较强的气候,朝向北(极向),朝向东和较大的地形起伏四种。槽谷的横剖面可以公式化为Y=a·X^b,槽谷形态不对称由冰川差异侵蚀和冻融差异所致。发现两种冰川侵蚀裂痕,即挤压剪切裂痕和拉张剪切裂痕。

It is a very useful method to study glacial erosional Landforms, by quantitatively analysing the forms, aspects and altituds of the cirques. In Luojishan Mt. area, there were four factors that influenced the forms of the cirques: (i) more maritime climate, because cloudiress, reduces summer ablation; (ii) on northward (poleward) aspects, because lower temperature and solar radiation protect glaciers from ablation; (iii) on eastward aspects, because ablation of east slope is reduced during the moraing; (iv) ...