CAJ | 학술논문

假设在均匀弹性介质半空间中，存在一单一力源F→，通过求解弹性静力学方程，得到地球表面位移解3个分量(u、v，w)的解析表达式。讨论了理论垂直形变场的基本特征。力的大小是决定形变幅度的基本因素，力越大，形变幅度亦越大，反之，则越小。力源深度h越大，形变幅度越小，影响范围越大，反之，形变幅度大，影响范围小。力源倾角为正时(向下)，形变中心区下降，倾角为负(向上)时，形变中心区隆起。力的方位角是决定形变场图像形态的重要因素。利用大同地区(1984～1987年)和张北地区(1984～1991年)水准测量资料反演这二个地区震前力学参数，结果表明，力源中心与实际震中位置相差小于40 km，力的方位角近于水平，理论形变图与实测形变图基本相似。
가설재균균탄성개질반공간중，존재일단일력원F→，통과구해탄성정역학방정，득도지구표면위이해3개분량(u、v，w)적해석표체식。토론료이론수직형변장적기본특정。력적대소시결정형변폭도적기본인소，력월대，형변폭도역월대，반지，칙월소。력원심도h월대，형변폭도월소，영향범위월대，반지，형변폭도대，영향범위소。력원경각위정시(향하)，형변중심구하강，경각위부(향상)시，형변중심구륭기。력적방위각시결정형변장도상형태적중요인소。이용대동지구(1984～1987년)화장북지구(1984～1991년)수준측량자료반연저이개지구진전역학삼수，결과표명，력원중심여실제진중위치상차소우40 km，력적방위각근우수평，이론형변도여실측형변도기본상사。
On the hypothesis that there is a single force F→ in the homogeneously elastic half space, and through solving elastic statics equation, we got the analytic expression of the 3 components (u, v, w) of displacement solution on the surface of the earth. The basic character of the theoretic vertical deformation field is also discussed. The extent of deformation is direct- ly proportional to the strength of the force, and is inversely proportional to the depth of the o- rigin of the force. When the dip angle of the force is normal (downward), the central defor- mation area descends. In the contrary, the central deformation area rises. The dip angle is a main factor to decide the image shape of crustal deformation field. Using the leveling data of Datong region (1984～1987) and Zhangbei region (1984～1991) we inversed the dynamic pa- rameters of the two region. The results show the difference between the center of the forcesystem and the real epicenter is less than 40 km. Dip angle of force is nearly horizontal. Theo-retical crustal deformation image is basically similar to the observed deformation image.