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New Ground Motion Prediction Equation for Peak Ground Velocity and Duration of Ground Motion for Mining Tremors in Upper Silesia

Chodacki J.

Acta Geophysica

2016

Vol. 64, no. 6

2449--2470

This article presents a method of predicting the peak horizontal velocity of ground motion, PHV, and the duration of vibration, tH, for strong seismic events (E ≥ 5·106 J, ML > 2.5) in the Upper Silesian Coal Basin (USCB). For the prediction of PHV, a model proposed by Si and Midorikawa was used. The regression method takes into account the impact of the local geology under seismic stations on the ground motion according to the Eurocode 8 classification. The ground classification was based on the results of a seismic survey conducted near the seismometer stations. This method is of great practical use because it allows the degree of vibration intensity to be determined on the basis of the Mining Seismic Instrumental Intensity Scale MSIIS-15 (acronym GSIGZW in Polish version) at any distance from the epicentre of the seismic events induced or triggered by mining.