Amurian板块旋转模型及其沿郯庐断裂带二级划分  

Amurian Plate Rotation Model and Its Secondary Division along the Tanlu Fault Zone

作　　者：李拴虎[1] 高立新[1] 韩晓明[1] 陈立峰[1] 梁沙沙[1] LI Shuanhu;GAO Lixin;HAN Xiaoming;CHEN Lifeng;LIANG Shasha(Inner Mongolia A utonomous Region Earthquake Agency, Hohhot 010010, China)

机构地区：[1]内蒙古自治区地震局,呼和浩特市010010

出　　处：《华南地震》2017年第4期9-15,共7页South China Journal of Seismology

基　　金：2016年内蒙古自治区科技厅重大专项(强震短临跟踪和空地立体观测技术集成创新);中国地震局监测;预测;科研三结合课题(160506)

摘　　要：阿穆尔(Amurian)板块在东北亚地区的地壳运动和地震活动研究中起着特别重要的作用,特别是可以解释郯庐断裂带在板块构造中的作用性问题。然而,由于研究数据不足,南部边界的划分仍有争议,因此,郯庐断裂带将是进一步准确界定阿穆尔板块的关键所在。通过分析贝加尔裂谷拉伸带和斯塔诺沃依山脉挤压带的震源机制解和应力矢量方向,结合中国东北地区的GPS数据计算结果,建立了中心位于E118.4°±2.4°,N57.5°±1.2°附近的主体Amurian板块的旋转模型。利用卡方统计检验的数理方法计算了朝鲜半岛与Amurian主体板块和中国华南地块的相关性,发现朝鲜半岛既不属于Amurian板块,也不属于中国华南地块,而是一个相对独立的刚性地块,能量释放量级也说明了同样的问题。结论表明:郯庐断裂带应是Amurian板块的南边界,至少是Amurian板块二级划分的边界带。The Amurian plate（AM） in the northeast Asia plays a particularly important role in the estimation of surrounding crustal movements and interpretation of seismic activities, especially which can interpret the role of Tanlu fault in plate tectonic. However, due to the lack of research data, the location of the southern border is still controversial, therefore, the Tanlu fault zone will be the key to further defining the Amurian plate. Based on the analysis of the focal mechanism solutions and stress vector direction of the Baikal rift zone stretching belt and Sitanuowoyi mountains extrusion belt, combining with GPS data in northeast China, the paper establishes themain rotation model of Amurian plate whose center is located in near E118.4°±2.4°, N57.5°±1.2°. By using the x2 method, the paper calculates the correlation of the Korean Peninsula between the main Amurian plate and China Southern block, and finds that the Korean Peninsula does not belong to the Amurian or Chinese Southern, which is a relatively independent rigid block. The magnitude of the energy release also shows that the same problem. The conclusion shows that the Tanlu fault zone should be the southern boundary of the Amurian plate, at least a secondary division boundary zone of the Amurian plate.

关 键 词：Amurian板块 旋转模型 郯庐断裂带 二级划分 

分 类 号：P315.7[天文地球—地震学]