The effect of pore fluid on seismicity: a computer model |
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| Authors: | LI LI YAO-LIN SHI GUO-MIN ZHANG |
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| Institution: | 1. Center for Analysis and Prediction, China Seismological Bureau, Beijing 100036, China
2. Graduate School, Science and Technology of China, Beijing 100039, China |
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| Abstract: | The influence of fluid on seismicity of a computerized system is
analyzed in this paper. The diffusion equation of fluid in a crustal fault area is developed and
used in the calculation of a spring slide damper model. With mirror imagin boundary condition
and three initial conditions, the equation is solved for a dynamic model that consists of six
seismic belts and eight seismogenous sources in each belt with both explicit algorithm and
implicit algorithm. The analysis of the model with water sources shows that the implicit
algorithm is better to be used to calculate the model. Taking a constant proportion of the pore
pressure of a broken element to that of its neighboring elements, the seismicity of the model is
calculated with mirror boundary condition and no water source initial condition. The results
shows that the frequency and magnitude of shocks are both higher than those in the model with
no water pore pressure, which provides more complexity to earthquake prediction. |
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| Keywords: | water pore pressure pore fluid seismic model |
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