高台车站断裂全新世活动特征   总被引：8，自引：0，他引：8  

陈柏林  刘建民  刘建生  王春宇  张永双  董诚  吴乃芬 《地质学报》2006,80(4):497-507

高台车站断裂属于河西走廊内次级隆起——榆木山隆起北侧断裂系的组成部分,它位于榆木山北缘断裂北侧6km、是与榆木山隆起有成生联系、活动时间比北缘断裂更新的现代活动断裂。高台车站断裂呈向北北东略微凸出的弧形,走向总体为北西向,倾向南西,自南东向北西走向由北西向渐变为北西西、甚至近东西向,倾角自中等变化为低角度。高台车站断裂的活动性质在剖面上表现为南西盘向上逆冲为主、水平位移不明显,在近两万年以来的晚更新世晚期—全新世期间,该断裂可能发生过5期明显的新构造活动,活动时间具有自东向西逐渐变新的迁移性特点,最新一次在2.0~3.0ka左右,与高台地震时间是吻合的,它是高台地震的发震构造。  相似文献   

绿洲系统产业结构的历史演变及其发展方向：以高台绿洲为例   总被引：6，自引：0，他引：6  

周劲松 《地理科学》1996,16(1):79-87

高台绿洲为例，分析产业结构在历史各阶段的特点以及用灰色模型ＣＭ（１．１）加以预测，８将绿洲划分为原始牧业绿洲，传统家牧绿洲，新型产业绿洲，并指出绿洲产业化是其必然趋势。  相似文献   

Discovery of the Surface Rupture Zone on the South of Helishan in Gaotai,Gansu Province     

Zheng Wenjun  Zhang Peizhen  Yuan Daoyang  Ge Weipeng  Liu Jianhui 《中国地震研究》2010,24(1):097-105

According to a new investigation in the northern Hexi corridor,the remains of two surface rupture zones were discovered on the southern margin fault of the Helishan. One rupture has a length of approximately 7km and the other 10km. The two surface rupture zones might have been produced by the latest earthquake event. On the surface rupture is continuous scarp and free face caused by the rupture. The scarp is about 1 ～ 1. 5m high and on some sites,nearly up to 2m. According to the OSL results,the latest T1 terrace and higher flood plain forming in 3000a B. P. are dislocated by the fault. The above reveals the rupture age to be later than the T1 terrace. However,in the historical data and earthquake catalogue,we didn't find related information about the fault and surface rupture in this area. The 180 A. D. Biaoshi M8. 0 earthquake and the 756 A. D. Zhangye-Jiuquan M7. 0 earthquake are documented in historical data. It is inferred by textual research that the two earthquakes are related to the northern marginal fault of Yumushan in the south of the basin. Due to a lack of reliable evidence,there are still many arguments on this inferred conclusion. Thus we hold that the two surface rupture zones were produced by one of the two large earthquakes or other unrecorded historical event. The research on the activity and surface rupture of this fault can offer valuable information for the tectonic study and strong earthquake risk estimates of this region in the future.  相似文献   

高台县防震减灾工作浅谈     

李文高 《高原地震》2005,17(1):65-67

近年来，高台县防震减灾工作取得了很大的进展，其中防震减灾宣传工作发挥了重要作用。对高台县的防震减灾宣传工作经验进行总结，以便为今后的防震减灾工作服务。  相似文献   

高台地震台用数字资料进行大震速报的经验介绍     

武银  尹亮  刘鸿斌  陈兰新  刘小明  李兴坚 《高原地震》2004,16(1):68-73

着重介绍了高台地震台用数字地震资料进行大震速报工作的经验和方法,以期与同行交流,共同做好大震速报工作。  相似文献   

甘肃高台合黎山南缘发现地震地表破裂带   总被引：8，自引：6，他引：2       下载免费PDF全文

郑文俊  张培震  袁道阳  葛伟鹏  刘建辉 《地震地质》2009,31(2):247-255

据最新野外考察发现,位于河西走廊中段北部的合黎山南缘断裂东段有2条较新的地震地表破裂带遗迹,破裂带长度分别为7km和10km,保存较为完整,认为其为较近的一次地震活动所致。根据该地区历史地震资料和目前该地区的研究程度,该地震地表破裂带可能与2次历史地震(公元180年表氏8级地震、公元756年张掖-酒泉7级地震)中的其中之一或与一次漏记的历史强地震有关  相似文献