Seismic analysis device and seismic analysis program

摘要

PROBLEM TO BE SOLVED: To provide an earthquake analysis device capable of observing a minute earthquake with high accuracy while reducing the installation cost of a seismograph. SOLUTION: An seismic analyzer 1A has a first measured waveform U1 (t) and a first measured waveform U1 (t) measured by a first seismograph 21 and a second seismograph 22 installed at a predetermined installation distance L1, respectively. Based on the waveform input unit 120 into which the measurement waveform U2 (t) of 2 is input, the first measurement waveform U1 (t), and the second measurement waveform U2 (t), the earthquake occurrence point Ms is used as the source. It is provided with an analysis processing unit 121 that generates an analysis waveform G (s) of an earthquake to be generated. The analysis processing unit 121 includes the time axis of the first measurement waveform U1 (t) and the time axis of the second measurement waveform U2 (t) in a predetermined time length w based on an arbitrary time while shifting the time axis. The correlation between the first measurement waveform U1 (t) and the second measurement waveform U2 (t) is calculated, and the analysis waveform G (t) is generated based on the correlation. [Selection diagram] Fig. 1