1944年青海乐都瞿昙寺地震考证
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摘要
通过对1944年初青海乐都瞿昙寺地震史料的搜集和现场考察、采访,获得了此次地震更加丰富的资料,进而核定了此次地震的基本参数。研究结果表明:此次地震的震中位于青海省乐都县以南的瞿昙寺附近,震中位置大致为36.3°N、102.2°E,精度2类,误差小于等于25 km,震级约5.5级,震中烈度可达VII度。此次地震位于拉脊山北麓与西宁—民和盆地的交界部位,靠近拉脊山北缘断裂带附近,地震等震线长轴方向呈近东西向,与拉脊山北缘断裂走向大体一致,综合分析认为,拉脊山北缘断裂的最新构造活动可能导致了此次地震的发生。
Based on the textual research of historical data and site inspection as well as the interview of Qutan temple,Qinghai province,we obtained detailed material of earthquake occurred in 1944.Furthermore,we checked and ratified its basic earthquake parameters. The result show: the epicenter of this Qutan earthquake locates around the Qutan temple,the south to the Ledu county of Qinghai province. The location of epicenter is 36. 3°N,102. 2°E,accuracy is class 2,error less than or equal to 25 km,earthquake magnitude is 51/2,epicentral intensity could reach to VII. The earthquake occurred between northern margin of Laji mountain and Xining-minghe basin which locates near the northern margin fault zone of Laji mountain. According to comprehensive analysis,the latest activity of Laji mountain northern margin fault may lead to the earthquake occurring at Qutan temple in year 1944.
Based on the textual research of historical data and site inspection as well as the interview of Qutan temple,Qinghai province,we obtained detailed material of earthquake occurred in 1944.Furthermore,we checked and ratified its basic earthquake parameters. The result show: the epicenter of this Qutan earthquake locates around the Qutan temple,the south to the Ledu county of Qinghai province. The location of epicenter is 36. 3°N,102. 2°E,accuracy is class 2,error less than or equal to 25 km,earthquake magnitude is 51/2,epicentral intensity could reach to VII. The earthquake occurred between northern margin of Laji mountain and Xining-minghe basin which locates near the northern margin fault zone of Laji mountain. According to comprehensive analysis,the latest activity of Laji mountain northern margin fault may lead to the earthquake occurring at Qutan temple in year 1944.
引文
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[4]涂德龙,王赞军.青海省湟水盆地全新世活动断裂分布及其活动特征研究[J].西北地震学报,1998,20(4):83-90.
[5]张驭寰,杜仙洲.青海省乐都瞿昙寺调查报告[J].文物杂志,1964,47.
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[8]顾功叙.中国地震目录[M].北京:科学出版社,1983.
[9]王二七,张旗.青海拉鸡山:一个多阶段抬升的构造窗[J].地质科学,2000,35(4):493-500.
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