A method for gravity anomaly separation based on preferential continuation and its application
Meng Xiao-Hong1,2, Guo Liang-Hui1,2, Chen Zhao-Xi2, Li Shu-Ling2, and Shi Lei2
1. State Key laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China.
2. Key Laboratory of Geo-detection (China University of Geosciences, Beijing), Ministry of Education, Beijing 100083, China.
摘要 本文在Pawlowski, R. S（1995）优选延拓思想的基础上，提出了在深源长波长信息和浅源短波长信息互不相关、延拓高度足够大的前提下，基于优选向上延拓算子的重力异常分离方法与步骤，通过分析理论模型重力异常分离算子的频率响应随不同延拓高度的变化规律，给出了估计最佳延拓高度的办法。利用本文方法对某铁矿区实际重力异常进行处理，有效地分离出了区域异常和局部异常，异常分离效果好。
Abstract：
Based on the preferential continuation method proposed by Pawlowski (1995), we propose a method and procedure for gravity anomaly separation with the preferential upward continuation operator in the case that the various sources are uncorrelated with one another and the continuation height is enough large. We also present a method for estimating optimum upward-continuation height, based on analyzing the characteristics of the preferential upward continuation operators of a synthesized gravity anomaly varying with different continuation heights. The method is tested on the raw Bouguer gravity data over an iron deposit. The result shows that the method separates the data into regional anomaly and residual anomaly efficiently and clearly.
MENG Xiao-Hong,GUO Liang-Hui,CHEN Zhao-Xi et al. A method for gravity anomaly separation based on preferential continuation and its application[J]. APPLIED GEOPHYSICS, 2009, 6(3): 217-225.
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2009, Vol. 6 
