Application of Multilayer Perceptrons to Earthquake Seismic Analysis
Two multilayer perceptron (MLP) methodologies are developed to tackle the problems of earthquake seismic arrival picking and identification. The arrival picking is achieved using the vector modulus of three-component (3-C) seismic recording or the absolute value of amplitude of single-component recording, as the input to an MLP. A discriminate function, determined from the output of the trained MLP, is then employed to define the arrival onset. Arrival identification is achieved using the degree of polarization of the arrival segment of the 3-C recordings as the input to an MLP; the output of the trained MLP indicates the arrival type. The results are encouraging. This work demonstrates significant potential in the application of MLPs to automatic earthquake analysis and other geophysical problems. In principle, it should be possible to develop a complete automatic seismic analysis system based on the two methodologies described herein.
KeywordsOnset Time Input Node Noise Burst Arrival Type Vector Modulus
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