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It is observed that the parameter of seismic inhomogeneous degree (GL value) calculated from the earthquake catalog shows obvious abnormal changes prior to strong earthquakes, indicating the state change of local seismic activity. This paper focuses on the mechanism for the abnormal changes of the GL values based on the sequences of acoustic emission for three types of rock samples containing macro-asperity...
The present paper first includes a brief discussion of GIS technology. Next, the various steps in a regional earthquake damage and loss analysis are discussed, with emphasis on their implementation in the GIS environment. Lastly, a software of WorldRisk which was completed recently are presented to illustrate GIS-based global earthquake damage and loss estimation.
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