| 摘要 |
PROBLEM TO BE SOLVED: To find out the phenomenon of earthquake occurrence which depends with measure from the earthquake phenomena appearing in an earthquake occurrence area, observe earthquake phenomena by the measure and make a short-term earthquake prediction. SOLUTION: The earthquake prediction system is provided with an earthquake element signal preparation means 2 for extracting prescribed earthquakes from earthquakes that have occurred in an area covered and numeralizing earthquake information as Dcj from the seismic center information and information of an earthquake mechanism solution of the earthquakes; a earthquake element time series preparing means 3 for obtaining Dc=(Dc1, Dc2, Dc3..., Dcm...), on the basis of the occurrence sequence of the earthquakes; a primary difference output means 4 obtaining as primary differencesΔDcm and n; a secondary difference output means 5 for obtaining as secondary differencesΔ2Dcm, n and k, an amplitude and phase comparison and detection means 8 for comparing and detecting the amplitude and the phase of the secondary differencesΔ2Dcm, n and k between different elements and outputting the time series of amplitude relationships and phase relation among elements and earthquake elements. COPYRIGHT: (C)2004,JPO&NCIPI |
