Underground Imaging by Electromagnetic Migration

pi将开发算法，利用电磁地球物理数据更好地成像、描绘和表征地下结构。电磁偏移算法是一个稳定的过程，可以准确地恢复地球内部上升场的相位。与以前的技术相比，它的计算效率也很高。pi将扩展其目前2D迁移方法的实用性，并将其方法扩展到井眼和地面EM数据的3D方法。＊＊＊＊

9403925 Zhdanov The PIs will develop algorithms for better imaging, delineation and characterization of underground structures by using electromagnetic geophysical data. The EM migration algorithm is a stable procedure that accurately restores the phase of the upgoing field inside the Earth. It is also computationally efficient compared to previous techniques. The PIs will expand the utility of their present 2D migration method and extend their method to 3D for borehole as well as surface EM data. ****