摘要
由于活动地块的相对运动和变形,其边界带往往构造活动强烈,是反映地壳运动的敏感部位。基于上述思路,昆仑山口西8.1级大震发生后,通过大范围监测布设在青藏块体北部地区及周边主要构造带上的水准剖面,在短期内快速获取了大范围的断裂活动信息和不同断裂带对大区域构造应力场变化的响应特征。实践证明,这种监测方式灵活、作业周期短、资料处理快,能及时对震情趋势做出估计,不失为当前区域形变监测工作的一种新的探索。
Due to relative movement and deformation between active blocks, their boundaries often indicate violent tectonic activities, and they are sensitive parts of reflecting crust movement.Based on above thinking, after Ms 8.1 earthquake in Qinghai - Xinjiang area on November 14,2001, through large-range leveling survey crossing main fractures of the northern QinghaiXizang block and its margins, the information of large - range fractures activities and the features of response to the change of large- range tectonic stress field have been quickly obtained by large - scale leveling survey crossing major fractures along north of different fractures. This measurement has many advantages such as flexible, short survey period, and quick data treatment and timely estimation for the trend of earthquake. So it, after all, is a new exploration for present regional deformation monitoring.
出处
《地震地磁观测与研究》
2005年第4期22-28,共7页
Seismological and Geomagnetic Observation and Research
基金
地震科学联合基金(104011)
中国地震局监测预报司合同制项目"跨断裂垂直形变剖面在地震预测中的应用研究"
地震科学联合基金(603001)资助
关键词
跨断裂水准剖面
青藏块体北部
昆仑山口西8.1级地震
leveling survey crossing fractures, the north of Qinghai - Xizang block, west to Kunlun Mountain Pass Ms 8.1 earthquake
