CAJ | 학술논문

为了研究兰州-白银地区的构造特征和地震之间的关系，系统地对研究区的重力场进行了研究。推断了研究区断裂构造体系，探讨了该区地震与重力异常、断裂之间的关系。研究结果表明，研究区主要发育有 NWW - NW、NE、NEE、SN 向四组断裂，其中 NWW - NW 向为主干断裂，是控制区域地质体分布的主要构造因素。地震受重力梯级带和断裂控制，中强地震受 NNW 断裂控制明显；微小地震与NWW、NEE 向断裂关系密切，重力梯级带是地震潜在源区的一个重要标志，为该区地震活动认识提供新的依据。
위료연구란주-백은지구적구조특정화지진지간적관계，계통지대연구구적중력장진행료연구。추단료연구구단렬구조체계，탐토료해구지진여중력이상、단렬지간적관계。연구결과표명，연구구주요발육유 NWW - NW、NE、NEE、SN 향사조단렬，기중 NWW - NW 향위주간단렬，시공제구역지질체분포적주요구조인소。지진수중력제급대화단렬공제，중강지진수 NNW 단렬공제명현；미소지진여NWW、NEE 향단렬관계밀절，중력제급대시지진잠재원구적일개중요표지，위해구지진활동인식제공신적의거。
In order to study the relationship between structural features and seismic activity in Lanzhou-Baiyin area, in this paper, the gravity field of the research area was systematically studied. The fault structure system of this area was deduced, and the relationship between the seismic and the gravity anomaly and faults in this area was discussed. The research result indi-cates that four groups of fault of the direction of NWW-NW, NE, NEE and SN are main devel-oped in this area, in which the fault of the direction of NWW-NW is the main fault, and it is the main structural factor controlling the distribution of the regional geologic body. The earth-quake is controlled by the gravity cascade and fracture, and the moderately strong earthquake is obviously controlled by the fault of the direction of NNW. The micro earthquake is closely relat-ed to the fault of the direction of NWW and NEE, and the gravity cascade is an important sym-bol of the potential seismic source in this area. All of above will provide a new basis for the un-derstanding of seismic activity in this area.