摘要
库玛断裂带作为青藏高原内部的一条强地震活动带 ,1 90 0年以来发生过 3次 7级地震 ,其中 2次 7级大震前均出现 5级以上地震的背景空区 ,表明背景空区对该带大震具有中长期预报意义。最近一次背景空区业已形成 ,并出现与之配套的孕震空区 ,其演化图像符合强震孕育模式。研究发现 ,库玛断裂带中段 ML 3以上地震空区 ,对共和 7级强震及周边 2 0 0 km的强震有前兆意义。
As s strong seismic zone, three earthquakes with MS7 occurred along Kuma fault zone since 1900, and before two strong shocks M S ≥5 earthquakes formed the background gap. It shows that background gas is of significance in the prediction of strong shock along this zone. A background gas and a seismogenic gap have formed in the same place, and their evolutionary patterns accord with the strong seismogenic model. The seismogenic gap along Kuma fault zone shows the precursory significance for the Gonghe earthquake with M=7 and its strong aftershocks. It may be a stress window of strong shock breed.
出处
《地震》
CSCD
北大核心
2002年第2期81-87,共7页
Earthquake
