Unifying analysis of continyous crustal deformation data in Japan searching for Slow and Silent Earthquakes

1995会计年度，我们在静冈县和京都召开会议，就统一数据格式（1991-1995年）和分析方法进行了磋商。经过咨询，我们统一了数据格式，并利用潮汐分析程序BAYTAP-G计算了地壳变形数据的趋势项。在水泽会议上，我们做了第一次学习报告。继上一财政年度之后，我们在1996财政年度对地壳变形数据进行了分析。在高知会议上，我们作了第二次报告，在札幌会议上，我们作了最后的报告：(1)1994年三陆外地震，在地震发生后，在Erimo、宫古和Esashi等地的趋势记录项同时记录到一个显著的震后应变变化，其时间常数约为1 ~ 3天，约为10^<-8>阶。1992年三陆外地震的Esashi和Miyako延伸仪记录的变化与1995年小古根-南部地震的趋势项变化相似(2)，同时在山崎、阿布山、天濑和冈山记录了趋势项的变化。

In fiscal year of 1995, at meeting in Shizuoka and Kyoto, we have held a consultation to unify the data format (the period 1991-1995) and analysis method. Following a consultation, we have unified the data format and calculated trend-terms of the crustal deformation data by using Tidal analysis program, BAYTAP-G.At meeting in Mizusawa, we havemade first reporte of studying.In fiscal year of 1996, following the previous fiscal, we have analyzed of the crustal deformation data. At meetingin Kochi, we have made a second report, and then at meeting in Sapporo, we have made final report that (1) The 1994 Off Sanriku Earthquake, after seismic shock, a remarkably postseismic strain change of about 10^<-8> order with the time constant of from about one to three days were recorded in the trend term of record at Erimo, Miyako and Esashi etc.atthe same time. That were similar change recorded at Esashi and Miyako's extensometer of The 1992 Off Sanriku Earthquake (2) The 1995 Hyogoken-nanbu Earthquake, from about harf a year before, the changes of trend-term were recorded at Yamasaki, Abuyama, Amagase and Osakayama at the same time.