Singular-Value Decomposition (SVD) for Extraction of Gravity Anomaly Associated with Gold Mineralization in the Tongshi Gold Orefield, Western Shandong Province, East China

详细信息   

• 责任者：Zhao Binbin (School of the Earth Sciences & Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Chen Yongqing
• 刊名：Earth Science
• 出版年：2011
• 卷期：36(2)
• 关键词：金矿 ; gold ores ; 重力异常 ; gravity anomaly ; 山东 ; Shandong Province
• 页码：p.341-346
• 图表：6 illus., 19 refs.
• 分类号：1001
• issnNo：ISSN1000-2383
• isbnNo：CN42-1233/P

摘要

 A singular-value decomposition (SVD) program on a MATLAB platform was effectively used to handle gravity signals for the Tongshi gold field. Firstly, the gravity signals are firstly decomposed into different eigenimages with singular-value decomposition method. Secondly, the thresholds between the eigenvalues reflecting different layers of ore-controlling factors are established by multi-fractal method. Finally, the eigenvalues with different layers of ore-controlling factors were rebuilt on certain mathematical rules.