Underground water level/temperature response to seismic/tectonic transients: effects of poroelasticity
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Abstract
The problem of underground water flow is discussed in many publications. The upper crust down to approximately 20 km is a sequence of layers of porous/fractured fluid-saturated deformable rocks. When subjected to stress of various duration and mode, the excess transient pressure appears in the pore fluid, which can be observed practically as water level change/oscillations in boreholes. In the paper are presented elementary theoretical models of underground water level/temperature response to seismic/tectonic transients taking into account effects of poroelasticity (Biot model). Besides, a direct mechanical squeezing of pore water by seismic vibrations (instantaneous flow) is considered.
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References
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