Moving AR spectrum analysis and earthquake information processing |
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| Authors: | Dayu Han |
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| Institution: | (1) Center for Analysis and Prediction, State Seismological Bureau, Beijing, China |
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| Abstract: | The Zhangdaokou short-range repeated levelling data is analysed by the moving AR spectrum analysis. There are some anomalous
changes of AR spectrum parameters during the Tangshan Earthquake. The period is aboutT=30 days which appeared since January 1975 till January 1977, meanwhile the optimum order of AR model fitting isP
oP
≥6, and the corresponding FPE value is high. |
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| Keywords: | Time series analysis Spectrum analysis Short-range repeated levelling |
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