Three-dimensional joint inversion for magnetotelluric and seismic traveltime data using cross-gradient coupling
We put forward a three-dimensional joint inversion algorithm framework for magnetotelluric data and seismic traveltime data using a cross-gradient coupling method.Based on a well-developed three-dimensional magnetotelluric staggered-grid finite difference forward algorithm and an eikonal-equation-based seismic FMM (fast marching method) traveltime ray tracing algorithm, a three-dimensional joint inversion algorithm having common inversion grids, with cross-gradient as structural constraint, and with both resistivity and velocity models able to be simultaneously obtained has been achieved.With synthetic data pairs from single prism model, trial computation of joint inversion has been carried out, and the results indicate that, compared with single inversion, joint inversion has better effect in recovering single prism”s spatial morphology and true values, and also enhances the velocity features in the deep part of the single prism.
Joint inversion Cross-gradient Magnetotelluric Seismic traveltime
PENG Miao TAN Handong JIANG Mei QIAN Hui TAN Jiayan
State Key Laboratory for Continental Tectonics and Dynamics,Institute of Geology,Chinese Academy of School of Geophysics and Information Technology,China University of Geosciences,Beijing,China
国内会议
乌鲁木齐
英文
205-211
2013-10-14（万方平台首次上网日期，不代表论文的发表时间）