鳥取微小地震観測所の観測網による震源決定の精度について -4観測点の P time を用いた場合-

Abstract

Hypocentral errors due to random reading errors of arrival times of seismic waves atobservation stasions were simulated for a simple method of hypocenter determination, whereP times at four stations are used assuming the medium being a homogeneous half space.The simulation was carried out in the case of the observation network of the TottoriMicroearthquake Observatory, Disaster Prevention Research Institute, Kyoto University. Theoptimum combination of four stations out of eight stations of the network is discussed for eachepicentral region. For each configuration of stations, the extents of errors in hypocentralcoordinates for various regions are described in a map.