冰蚀作用
又称刨蚀作用(glacial ploughing)。指冰川对地表进行磨蚀、掘蚀和啮蚀等的剥蚀作用。冰川重量对冰床有很大压力，它又挟带着各种大小的岩屑和石块，运动着的冰川，对流经的基岩进行推锉和碾磨，称为磨蚀(abrasion)，同时，冰川又能开挖掘取底床的物质，故又称掘蚀作用(quarrying excavation,glacial plucking)。冰融水渗入冰下岩石的裂隙，发生冻融风化，加速了磨蚀和掘蚀的进行。在冰斗后壁边缘裂隙位置，冰和山坡之间有时张开，有时密合，冻融风化使山坡石块松懈崩塌进入冰斗，啮蚀岩石，使山坡不断后退造成陡立的冰斗后壁。
22
Alias
Contributor
contributed at 2011-12-23
Classification(s)
●
Earth System(in Chinese) Glacial geology
Detailed Description
| English |
|---|
| Name | glacial erosion |
| Chinese |
|---|
| Name | 冰蚀作用 |
| Description | 又称刨蚀作用(glacial ploughing)。指冰川对地表进行磨蚀、掘蚀和啮蚀等的剥蚀作用。冰川重量对冰床有很大压力，它又挟带着各种大小的岩屑和石块，运动着的冰川，对流经的基岩进行推锉和碾磨，称为磨蚀(abrasion)，同时，冰川又能开挖掘取底床的物质，故又称掘蚀作用(quarrying excavation,glacial plucking)。冰融水渗入冰下岩石的裂隙，发生冻融风化，加速了磨蚀和掘蚀的进行。在冰斗后壁边缘裂隙位置，冰和山坡之间有时张开，有时密合，冻融风化使山坡石块松懈崩塌进入冰斗，啮蚀岩石，使山坡不断后退造成陡立的冰斗后壁。 |
How to Cite
NNU_Group (2011). 冰蚀作用, Concept & Semantic, OpenGMS,
https://geomodeling.njnu.edu.cn/repository/concept/c40069ca-1ef8-4623-96ee-2ac8dc84f21e
Copy
Copyright and Disclaimer
All copyrights of a material (model, data, article, etc.) in the OpenGMS fully belong to its author/developer/designer (or any other wording about the owner). The OpenGMS takes every care to avoid copyright infringement, contributor(s) should carefully employ materials from other sources and give proper citations.
Comment(s)