Abstract：The paper clearly pointed out that it is only the special case in 2.5-D body that there exist the issues of analytic singularity resulting in computation of field value cannot be carried out at some points of semi passive space in forward models of 2.5-D gravity and magnetic anomaly and in forward theoretical computational expression of cuboid ΔT and gradient fields that is showed in available literatures. The analytic singularity-free forward computational model of 2.5-D gravity and magnetic anomaly on semi passive space was created by detailed theoretical derivation and new analytic singularity-free theoretical expression on semi passive space of cuboid ΔT field was deduced in that basis. Above created model or expression is universally applicable and characterized by uniform form and rapid forward computation in comparison with available model or expression,which meets the need of forward and inverse rapid computation to a certain degree. The correlative computation showed that new-created analytic singularity-free forward computational model of 2.5-D gravity and magnetic anomaly on semi passive space and new deduced analytic singularity-free theoretical expression of cuboid ΔT field are correct.
骆遥, 姚长利, 薛典军, 金玉洁. 2.5D地质体重磁异常无解析奇点正演计算研究[J]. 石油地球物理勘探, 2009, 44(4): 487-493.
Luo Yao, Yao Chang-li, Xue Dian-jun, Jin Yu-jie. Analytic singularity-free forward computation of gravity and magnetic anomaly for 2.5-D geologic body. OGP, 2009, 44(4): 487-493.
