The role of fluid pressure on frictional behavior at the base of the seismogenic zone
The role of fluid pressure on frictional behavior at the base of the seismogenic zone
复制标题
流体压力对地震带底部摩擦行为的作用
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
N. Beeler
中科院分区：
文献类型：
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作者：
G. Hirth;N. Beeler
为了描述孕震带底部的应力和变形类型，我们研究了流体-岩石系统的力学性质如何响应温度和应变速率的变化。流体在富石英岩石脆性-韧性转变过程中的作用尚未在实验条件下进行探索，在实验条件下，微开裂和粘性流动之间的动力学竞争与地球上的预期相似。我们对这种竞争的初步分析表明，滑动摩擦的有效应力律在脆-韧过渡附近不应该像在浅层条件下那样有效。
To characterize stress and deformation style at the base of the seismogenic zone, we investigate how the mechanical properties of fluid-rock systems respond to variations in temperature and strain rate. The role of fluids on the processes responsible for the brittle-ductile transition in quartz-rich rocks has not been explored at experimental conditions where the kinetic competition between microcracking and viscous flow is similar to that expected in the Earth. Our initial analysis of this competition suggests that the effective stress law for sliding friction should not work as efficiently near the brittle-ductile transition as it does at shallow conditions.