冰楔 - 百度百科
冰楔(ice wedge)是地表水渗入冻土裂隙中冻结成的脉状冰。 是年均气温低于零下六度的多年冻土区长期冻结的产物。 其出现是气候寒冷程度的标志。
Ice wedge - Wikipedia
There are three different forms of ice wedges: active, inactive and casts. All three forms are prevalent today and can be found in different parts of the world. Active ice wedges are those that are still evolving and growing.
Frost weathering - Wikipedia
Frost weathering is a collective term for several mechanical weathering processes induced by stresses created by the freezing of water into ice. The term serves as an umbrella term for a variety of processes, such as frost shattering, frost wedging, and cryofracturing.
Frost Wedging Weathering | Definition, Process & Examples
2023年11月21日 · Frost wedging is a form of physical weathering that involves rocks being repeatedly frozen and thawed over a period of time. This process usually happens in areas of extremely cold weather and ...
物理风化 - 知乎
2020年4月24日 · 在来来回回地结冰、融化之后，岩石的缝隙不断扩大，最终岩石也会破碎掉（这种过程也被称为frost wedge）。 同样的道理，在某些情况下，岩石中的盐分会溶入水中，让水中含有盐分，如果水蒸发，盐分就会在岩石裂缝里析出结晶，而结晶的盐分会产生张力，也 ...
A unified model for frost wedging in an open fissure under ...
2024年4月1日 · Based on the laboratory test results, a unified model (including the fracture of the rim cap beam, ice wedge slipping and crack propagation) for the frost heaving pressure in a single open fissure is established for the first time to describe the frost wedging, which comprehensively takes into account the tensile and shear strengths of the ice ...
Mechanical Weathering & Ice Wedging | Definition & Examples
2023年11月21日 · Frost wedging is also known as ice wedging. When frost wedging occurs, the liquid form of water enters into small cracks of rocks and when the temperature shifts below freezing,...
5.2: Weathering and Erosion - Geosciences LibreTexts
Frost wedging, also called ice wedging, uses the power of expanding ice to break apart rocks. Water works its way into various cracks, voids, and crevices. As the water freezes, it expands with great force, exploiting any weaknesses. When ice melts, the liquid water moves further into the widened spaces.
Pan-Arctic ice-wedge degradation in warming permafrost and its …
2016年3月14日 · Ice wedges are common features of the subsurface in permafrost regions. They develop by repeated frost cracking and ice vein growth over hundreds to thousands of years. Ice-wedge formation...
Frost action - SpringerLink
Frost action involves the weathering processes caused by repeated cycles of freezing and thawing (the “multigelation” of some European writers). Frost action is thus differentiated from glacial action, which involves the processes related to moving ice.