抄録
Fifteen seismological observation stations operated by Tohoku University are distributed in the Tohoku district, northeastern Japanese arc. The accuracy of the determination of hypocenters and origin times of microearthquakes in the Tohoku district is investigated applying the method of prediction analysis.
Contour maps of the estimated standard errors in the hypocenters parameters and origin times are calculated and plotted for several magnitudes and event depths assuming the crust-upper mantle structure and errors in the data, taking into account ground noise level of the observation stations.
