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  张超,王世进,王宁,王生文,徐佳垚.垂直形变趋势累计率在川滇地区的应用[J].震灾防御技术,2017,12(2):329-337, DOI:10.11899/zzfy20170209.

垂直形变趋势累计率在川滇地区的应用
摘要:    本文在研究形变趋势累计率的基础之上,对数据处理方法进行了局部改进,将跨断层场地布设较多的川滇地区作为实验区,利用精密水准测量分析该地区的垂直形变异常强度,并结合川滇地区震例开展研究。分析发现强震发生前后一段时期,震中附近形变异常强度几乎保持一致,但在震前(1、2个月左右)会发生较大改变,震后逐步恢复到与震前相同的情况;强震主要发生在形变异常强度值变化较大区域附近。垂直形变趋势累计率在中短期的映震效果较好。
作者单位
张超 中国地震局第一监测中心, 天津 300180 
王世进 中国地震局第一监测中心, 天津 300180 
王宁 中国地震局第一监测中心, 天津 300180 
王生文 中国地震局第一监测中心, 天津 300180 
徐佳垚 中国地震局第一监测中心, 天津 300180 
关  键  词:垂直形变趋势累计率  跨断层测量  精密水准  形变异常强度
DOI:10.11899/zzfy20170209
基金项目:科技部科技基础性工作专项(2015FY210400),中国地震局第一监测中心主任基金(FMC2015006),中国地震局监测、预测、科研三结合课题(CEA-JC/3JH163703)共同资助
收稿日期:2016-07-11
作者简介:张超,男,生于1987年。硕士研究生,助理工程师。主要从事区域地壳形变数据处理与方法等研究。E-mail:mailto:875011229@qq.com
通讯作者:
The Application of the Accumulation Rate of Vertical Deformation Trend in the Sichuan-Yunnan Region
Abstract:      Based on the study of the cumulative rate of vertical deformation trend, the data processing method is modified partially, and the Sichuan-Yunnan region with more cross-fault site is taken as experimental area. The intensity of vertical deformation anomalies from precision leveling is analyzed. The results show that the intensity of deformation anomalies near the epicenter remains almost the same in a period before and after the occurrence of strong earthquakes, but the great change may take place one and two months before and after the earthquake. Then, it would gradually recover to the original situation. We also found that strong earthquakes occur mainly near the regions where the values of anomalous intensity change greatly. The reflect effect of accumulative rate of the vertical deformation tendency is good in the short to medium term.
Keywords:  The accumulation rate of vertical deformation trend  Cross-over fault measurement  Precise leveling  Intensity of deformation anomalies
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