CAJ | 학술논문

安宁河—则木河断裂带是川滇活动地块的东边界，该区域近年来一直被划定为地震重点监视区。为了加强这一区域的微震监测，研究断层深部的变形特征，自2013年1月以来，沿安宁河、则木河和大凉山断裂带布设了32个流动地震观测点。初步监测结果显示，西昌流动地震台阵的监测能力明显高于区域地震台网，可对观测区内ML0.8级以上的微震进行有效监测。西昌地震台阵的建立明显提高了安宁河、则木河和大凉山断裂带的地震监测能力，使监测能力由ML2.0提高至ML0.8。初步监测结果显示，地震主要沿安宁河—则木河断裂和大凉山断裂分布，石棉附近的地震活动水平明显高于其他地区，安宁河断裂在石棉附近的震源深度存在明显差异，东侧较深，西侧较浅。
안저하—칙목하단렬대시천전활동지괴적동변계，해구역근년래일직피화정위지진중점감시구。위료가강저일구역적미진감측，연구단층심부적변형특정，자2013년1월이래，연안저하、칙목하화대량산단렬대포설료32개류동지진관측점。초보감측결과현시，서창류동지진태진적감측능력명현고우구역지진태망，가대관측구내ML0.8급이상적미진진행유효감측。서창지진태진적건립명현제고료안저하、칙목하화대량산단렬대적지진감측능력，사감측능력유ML2.0제고지ML0.8。초보감측결과현시，지진주요연안저하—칙목하단렬화대량산단렬분포，석면부근적지진활동수평명현고우기타지구，안저하단렬재석면부근적진원심도존재명현차이，동측교심，서측교천。
The Anninghe-Zemuhe fault is the eastern boundary of Sichuan-Yunnan block. This region has been clas-sified as seismic risk zone in recent years. In order to strengthen earthquake monitoring in this area and study the deformation characteristics of deep faults,we deployed 32 temporary seismic stations along the Anninghe fault,the Zemuhe fault and Daliangshan fault since January 2013 . Preliminary results show that the monitoring capability of the Xichang seismic array is much higher than the regional seismic network. The array can monitor earthquakes with magnitude larger than ML0. 8 effectively. The earthquakes occur mainly along the Anninghe,Zemuhe and Daliangs-han faults. The seismic intensity of Shimian County is higher than other areas. The seismic source depth of the east-ern block is deeper than that of the western block.