Parallel rapid relaxation inversion of 3D magnetotelluric data  

大地电磁三维快速松弛反演并行算法研究(英文)

作　　者：林昌洪[1,2] 谭捍东[1,2] 佟拓[1,2] 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室,北京100083 [2]中国地质大学(北京)地球物理与信息技术学院,北京100083

出　　处：《Applied Geophysics》2009年第1期77-83,104,共8页应用地球物理（英文版）

基　　金：sponsored by National Natural Science Foundation of China(Grant No.40774029,40374024);the National Hi-tech Rsearch and Development Program of China(863 Program)(No.2007AA09Z310,);the Program for New Century Excellent Talents in University(NCET)

摘　　要：We implement a parallel algorithm with the advantage of MPI （Message Passing Interface） to speed up the rapid relaxation inversion for 3D magnetotelluric data. We test the parallel rapid relaxation algorithm with synthetic and real data. The execution efficiency of the algorithm for several different situations is also compared. The results indicate that the parallel rapid relaxation algorithm for 3D magnetotelluric inversion is effective. This parallel algorithm implemented on a common PC promotes the practical application of 3D magnetotelluric inversion and can be suitable for the other geophysical 3D modeling and inversion.为了进一步提高大地电磁三维快速松弛反演的计算效率,在深入分析大地电磁三维快速松弛反演算法的基础上,结合MPI自身的优越性,确定了并行计算的思路,实现了三维快速松弛反演的并行计算。通过理论模型合成数据和实测数据对实现的三维快速松弛反演并行程序进行了试算,分析对比了在多种情况下程序的执行效率。测试结果表明,所实现的三维快速松弛反演并行程序运行结果正确,效率提高明显。此成果在普通微机上实现,推动了大地电磁三维反演技术的实用化,可为其它地球物理三维正反演研究所借鉴。

关 键 词：MAGNETOTELLURIC MPI 3D rapid relaxation inversion parallel algorithm 

分 类 号：P631.325[天文地球—地质矿产勘探]