波数域重力异常正演计算精度分析  

Precision Analysis of Gravity Anomaly Forward Algorithm in the Wave Number Domain

作　　者：汪健[1] 李辉[1] 申重阳[1] 

机构地区：[1]中国地震局地震研究所地震大地测量重点实验室,湖北武汉430071

出　　处：《西南科技大学学报》2012年第4期65-68,74,共5页Journal of Southwest University of Science and Technology

基　　金：国家自然科学重点基金(40730317);中国地震局地震研究所所长基金(201156085)

摘　　要：重力异常正演计算是反演计算的关键环节,其精度对波数域反演有着重要影响。介绍了基于Parker公式的波数域重力异常正演计算的原理与算法过程,通过与空间域的高斯求积法进行比较,探讨了波数域算法正演重力异常的精度问题。结果发现波数域parker方法正演重力异常的精度较高,与空间域高斯求积法所求结果一致,两者之间差异微小,差值最大最小值出现在界面起伏较大处。Gravity anomaly forward algorithm is the key point in inversion algorithm, its precision is very important to inversion algorithm in the wave number domain. This article introduced the forward algo- rithm＇s principle and calculation process which were based on Parker formula. Through carries on the comparison with the spatial domain Gauss menstruation, the article discussed the precision question of gravity anomaly forward algorithm in the wave number domain. The result discovered that the gravity a- nomaly forward algorithm＇ s precision by using parker method is reliable, asks the result with the spatial domain Gauss menstruation to be consistent, and the difference between them is small. The biggest and

关 键 词：重力异常 波数域 正演 parker公式 

分 类 号：P315[天文地球—地震学]