地震地磁观测与研究
地震地磁觀測與研究
지진지자관측여연구
Seismological and Geomagnetic Observation and Research
2015年
5期
59-63
,共5页
洞体应变%岷县-漳县MS6.6地震%加速变化期%失稳期%震后调整
洞體應變%岷縣-漳縣MS6.6地震%加速變化期%失穩期%震後調整
동체응변%민현-장현MS6.6지진%가속변화기%실은기%진후조정
cave volume strain%Minxian-Zhangxian MS 6.6 earthquake%accelerated change period%unstable period%adjustment after the earthquake
对宕昌地震台洞体应变观测资料异常变化进行分析，认为 EW 分量记录到岷县—漳县6.6级地震地形变过程，即震间形变→震前形变（包括加速变化期和失稳期）→同震形变→震后形变（包括震后滑动和震后调整）→震间形变。长时间的震后滑动记录在中国较为少见，此观测资料为地震孕育过程的研究提供了宝贵资料。
對宕昌地震檯洞體應變觀測資料異常變化進行分析，認為 EW 分量記錄到岷縣—漳縣6.6級地震地形變過程，即震間形變→震前形變（包括加速變化期和失穩期）→同震形變→震後形變（包括震後滑動和震後調整）→震間形變。長時間的震後滑動記錄在中國較為少見，此觀測資料為地震孕育過程的研究提供瞭寶貴資料。
대탕창지진태동체응변관측자료이상변화진행분석，인위 EW 분량기록도민현—장현6.6급지진지형변과정，즉진간형변→진전형변（포괄가속변화기화실은기）→동진형변→진후형변（포괄진후활동화진후조정）→진간형변。장시간적진후활동기록재중국교위소견，차관측자료위지진잉육과정적연구제공료보귀자료。
In this paper,the anomalous variation of cave volume strain data at Dangchang Seismic Station is analyzed. The result suggests that the data has recorded the whole process of earthquake deformation. The process is: interseismic deformation,then,preseismic deformation (which include the acceleration period and unstable period),then,coseismic deformation,then, postseismic deformation (which include the post seismic slip and the adjustment),and last, interseismic deformation. The post seismic slip of long duration is extremely rare in our country, so this data is extremely valuable for the study of earthquake gestation process.
