摘要
介绍了１９９８年８月１７日在浙江省嵊州市ＭＳ４．０地震的地震地质背景、震源机制和前兆特征。根据震源机制解和宏观等震线长轴方向推断这次地震的破裂方向为Ｎ６３°Ｗ，与孝丰－三门断裂带走向一致。嵊州地震震中烈度为Ⅴ度强。地震发生时嵊州市和新昌县普遍有感，少数建筑物遭到损坏，河堤和道路出现几十米长的狭窄裂缝。
An earthquake (M S4.0) occurred in Shengzhou city of Zhejiang Province on Aug.17, 1998. The seismogeological background, focal mechanism, and the precursory characteristics of this earthquake are described in this paper. Based on the fault plane solution of the earthquake foci and the direction of long axis of isoseimic line, the rupture direction of this earthquake is concluded as N63°W, which is coincident with strike of the Xiaofeng Sanmen active fault. The epicentral intensity of Shengzhou earthquake is higher than V. When the earthquake occurred, many people felt stronger ground shake. A few of buildings were damaged. Some narrow fissures with a length of 20～30 m appeared on the riverbank and the roads. This is an earthquake for which a short term prediction has been made.
出处
《地震》
CSCD
北大核心
1999年第4期365-371,共7页
Earthquake
关键词
震源机制
地震前兆
短期预报
嵊州地震
Focal mechanism, Seismic precursor, Short term prediction, Shengzhou earthquake
