Simple models for the estimation and measurement of frictional heating by an earthquake
Simple models for the estimation and measurement of frictional heating by an earthquake
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用于估计和测量地震摩擦生热的简单模型
DOI：
10.3133/ofr86508
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发表时间：
1986
期刊：
影响因子：
3.9
通讯作者：
A. Lachenbruch
中科院分区：
文献类型：
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作者：
A. Lachenbruch
对最简单的摩擦加热模型的回顾为同震和震后热效应及其与地震参数的关系提供了有用的数量级视角。除了决定能量耗散的断层滑动和摩擦外，同震温度对事件持续时间、滑动速度和剪切带宽度也很敏感。尽管具有相同滑动和摩擦的事件的同震加热可能相差几百度，但相关的震后温度异常通常在断层发生后的几天内无法区分。正如McKenzie和Brune所建议的，滑动和摩擦的产物可以通过钻入中到大地震滑动带的井中的热观测来恢复。在地震发生后几个月内获得的精确温度记录应有助于识别滑移区，其中随后的温度-时间序列可以分离断层、钻井和有时在断层模型中调用的可能发生的水运动所引起的热扰动。
A review of the simplest models of frictional heating provides a useful order-of-magnitude perspective on coseismic and post-seismic thermal effects and their relation to earthquake parameters. In addition to fault slip and friction, which determine the energy dissipation, coseismic temperatures are sensitive to event duration, slip velocity, and width of the shear zone. Although coseismic heating may differ by several hundred degrees for events with the same slip and friction, the associated post-seismic temperature anomalies will generally be indistinguishable a few days after faulting. As suggested by McKenzie and Brune, the product of slip and friction might be recovered by thermal observations in a well drilled into the slip zone of moderate to large earthquakes. Precision temperature logs obtained within a few months of the event should help identify the slip zone, and subsequent temperature-time series within it could permit separation of the thermal disturbances caused by faulting, drilling, and the possible occurrence of water movements sometimes invoked in faulting models.