CAJ | 학술논문

对磐石－伊通地区的地震活动性进行了研究，对研究区的断裂构造、区域重力场特征进行了分析，探讨了地震活动性与断裂构造的空间相关性，分析研究表明：该区域断裂构造比较发育，其展布方向主要有北东、北西向，这几组方向的断裂控制了该区域的地震活动。地震多发生在这些断裂及其交汇处。发现不同震级地震与断裂构造存在一定的相关性，地震大多发生在断裂的上盘。地震活动性分析表明，地震震源层在7－19km位置，该区域以年平均能量释放速率相同，表明该区域的断裂活动可能以蠕滑方式为主，未来发生强震的可能性较低，但却是中小地震活动性较高的地区。随着断裂活动时代变新，断裂周围地震发生的频率也升高，断裂对地震的影响优势距离在10km～20km。
대반석－이통지구적지진활동성진행료연구，대연구구적단렬구조、구역중력장특정진행료분석，탐토료지진활동성여단렬구조적공간상관성，분석연구표명：해구역단렬구조비교발육，기전포방향주요유북동、북서향，저궤조방향적단렬공제료해구역적지진활동。지진다발생재저사단렬급기교회처。발현불동진급지진여단렬구조존재일정적상관성，지진대다발생재단렬적상반。지진활동성분석표명，지진진원층재7－19km위치，해구역이년평균능량석방속솔상동，표명해구역적단렬활동가능이연활방식위주，미래발생강진적가능성교저，단각시중소지진활동성교고적지구。수착단렬활동시대변신，단렬주위지진발생적빈솔야승고，단렬대지진적영향우세거리재10km～20km。
@@@@In this paper, the seismicity of Panshi-Yitong region was discussed, the faults and regional gravitational field characteristic were analyzed, and discussed the spatial correlation between the seismicity and the faults in this region.This study show that the faults are development in the region, their main distribution direction is NE and NW, these groups of faults control the regional seismic activity.The most earthquakes were occurred in faults and the junction of these faults. And we find that some correlation have existed between different magnitude earthquakes and faults, the most earthquakes occurred in the hanging wall of the fault.he seismicity analysis shows that the seismic source is in 7-19 km position, The region has the same average annual energy release rate, the above shows that the faults of this region has mainly in creep slip.In the future, the probability of occurring strong earthquake is low, but this region has higher medium-small earthquake activity.Along with the faulting age change newly, the earthquake frequency will rise around these faults, and the advantage distance is in 10 km to 20 km about the influence of fracture in the earthquake.