GNSS基准站基线时间序列反映红河断裂带运动特征研究  

Motion Characteristic of Honghe Fault Belt based on Baseline Time-series Recorded at GNSS Reference Station

作　　者：施发奇[1] 付云文[1] 汪志民[1] 

机构地区：[1]云南省地震局,云南昆明650224

出　　处：《地震研究》2012年第4期529-534,共6页Journal of Seismological Research

摘　　要：通过对红河断裂带附近的GNSS基准站间基线长度和方向变化特征的分析,发现红河断裂带各段的基线长度均为缩短变化,其原因可能是青藏高原东缘向东南方向的挤出受到了红河断裂带的阻挡,基线缩短量被其吸收了一部分;且在某些部位基线的长度变化在一定时间段内还出现了反向和加急的趋势,这说明红河断裂带的边界断裂作用仍然存在,但其作用在逐渐减弱。We analyze the length and direction variation characteristics of baseline recorded at GNSS Reference Stations around the Honghe Fault Belt. The results show that the length of baselines in different segment of Honghe Fault Belt become short, its reason is sortheastward extrusion of eastern margin in Tibetan Plateau is blocked by the Honghe Fault Belt and a portion of baseline shorten amount is absorbed. The length of baseline in several seg- ments of Honghe Fault Belt shows the tendency of reversing and intensifying in a certain period, which describes that there exits the boundary faultin~ of Hon^he Fault Belt. however its effects become less obvious.

关 键 词：红河断裂带 GNSS基准站 基线时间序列 运动特征 

分 类 号：P315.730.1[天文地球—地震学]