东昆仑断裂带历史地震、古地震及地震空区讨论  

Investigation of Historical Earthquakes,Paleo-earthquakes and Seismic Gap in the Eastern Kunlun Fault Zone

作　　者：李建军[1] 张军龙[2] 蔡瑶瑶 LI Jian-jun ZHANG Jun-long CAI Yao-yao(School of Science, North University of China, Taiyuan 030051, China Institute of Earthquake Science, CEA, Beijing 100036, China)

机构地区：[1]中北大学理学院,太原030051 [2]中国地震局地震预测研究所,北京100036

出　　处：《地震》2017年第1期103-111,共9页Earthquake

基　　金：国家自然基金项目(41372215);地震行业专项(201408023);山西省联合研究基金项目(2012012003)

摘　　要：东昆仑断裂带是青藏高原东北部一条重要的断裂,具有明显的分段活动性。现代在不同段发生过多次由东向西迁移的强震,连接形成千余公里长的地表破裂带。各段历史地震调查、古地震、复发周期和滑动速率等研究表明东昆仑断裂带存在两个地震空区,其中玛曲段地震空区的危险性大,最大潜在地震矩震级不小于7.5。The eastern Kunlun fault zone is an important fracture in the northeast of Qinghai Tibet plateau, and it has obvious segment activity. Strong earthquakes have occured several times by the westward migration and formed more than 1 000 km long surface rupture zone. According to history seismic survey, ancient earthquake and recurrence intervals and sliding rate studies in different segments, it is found that the eastern Kunlun fault zone has two seismic gaps, the Maqu segment is the most dangerous one, and the maximum potential moment magnitude is not less than 7.5.

关 键 词：古地震 地震空区 玛曲段 东昆仑断裂带 

分 类 号：P315.7[天文地球—地震学]