Taylor Series Iteration for Downward Continuation of Potential Fields
详细信息
- 责任者：Wang Yanguo (College of Geo-Exploration Science and Technology ; Jilin University ; Changchun 130026 ; China) ; Zhang Fengxu
- 刊名：Oil Geophysical Prospecting
- 出版年：2011
- 卷期：46(4)
- 关键词：iterative methods ; 数据处理 ; data processing
- 页码：p.657-662
- 图表：4 illus., 12 refs.
- 分类号：1600
- 出版序号：1248
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
This paper presents an approach to downward continuation of potential fields using Taylor series and iteration method. First the authors change downward continuation factor in wave number domain into Taylor series expansion. Then, the authors process the wave spectrum of potential fields using the sum of the first N terms in series instead of the downward continuation response factor. Finally, calculated value gradually approximates to the truth value of downward continuation using iteration method, and the procedure of iteration is repeated until the difference between the measured value and the calculated value of iteration m times in the observation plane is adequately small. Hence the authors deduce the general formula of Taylor series iteration method for downward continuation of potential fields.