Since the slightly compressible method in R. P. FEM (Rigid Plastic Finite Element Method) was proposed by K. Mori, it has been used extensively in metal forming processes. One of the theoretical bases of R. P. FEM is ...Since the slightly compressible method in R. P. FEM (Rigid Plastic Finite Element Method) was proposed by K. Mori, it has been used extensively in metal forming processes. One of the theoretical bases of R. P. FEM is Markov’s variational principle which展开更多
In multi-component seismic exploration, the horizontal and vertical components both contain P- and SV-waves. The P- and SV-wavefields in a seismic record can be separated by their horizontal and vertical displacements...In multi-component seismic exploration, the horizontal and vertical components both contain P- and SV-waves. The P- and SV-wavefields in a seismic record can be separated by their horizontal and vertical displacements when upgoing P- and SV-waves arrive at the sea floor. If the sea floor P wave velocity, S wave velocity, and density are known, the separation can be achieved in ther-p domain. The separated wavefields are then transformed to the time domain. A method of separating P- and SV-wavefields is presented in this paper and used to effectively separate P- and SV-wavefields in synthetic and real data. The application to real data shows that this method is feasible and effective. It also can be used for free surface data.展开更多
基金Project supported by the National Natural Science Foundation of China
文摘Since the slightly compressible method in R. P. FEM (Rigid Plastic Finite Element Method) was proposed by K. Mori, it has been used extensively in metal forming processes. One of the theoretical bases of R. P. FEM is Markov’s variational principle which
基金This research is sponsored by National Natural Science Foundation of China （No. 40272041） and Innovative Foundation of CNPC （N0. 04E702）.
文摘In multi-component seismic exploration, the horizontal and vertical components both contain P- and SV-waves. The P- and SV-wavefields in a seismic record can be separated by their horizontal and vertical displacements when upgoing P- and SV-waves arrive at the sea floor. If the sea floor P wave velocity, S wave velocity, and density are known, the separation can be achieved in ther-p domain. The separated wavefields are then transformed to the time domain. A method of separating P- and SV-wavefields is presented in this paper and used to effectively separate P- and SV-wavefields in synthetic and real data. The application to real data shows that this method is feasible and effective. It also can be used for free surface data.
