摘要
The description of a seismic source in terms of seismic moment tensors is one of the most important advances in the physics of seismic sources. In this article, the fundamental concepts associated with seismic moment tensors are introduced, with emphasis on application of the interpretation of broadband digital seismograms. The introduction includes the representation theorem, concepts of seismic moment tensors, geometry of seismic moment tensors, moment tensor inversion, source time function, empirical Green’s function, and the spatio-temporal slip function. The physical significance of the concept of a point source is also discussed from the perspective of broadband seismology.
The description of a seismic source in terms of seismic moment tensors is one of the most important advances in the physics of seismic sources. In this article, the fundamental concepts associated with seismic moment tensors are introduced, with emphasis on application of the interpretation of broadband digital seismograms. The introduction includes the representation theorem, concepts of seismic moment tensors, geometry of seismic moment tensors, moment tensor inversion, source time function, empirical Green's function, and the spatio-temporal slip function. The physical significance of the concept of a point source is also discussed from the perspective of broadband seismology.
