THE TECHNIQUE FOR APPLICATION OF LOCAL WAVENUMBER TO MAGNETIC INTERPRETATION
CUI Li1,2,3,4, WANG Wan-yin2,3,4
1. Professional School of Industrial Science and Technology Huizhou, Huizhou 516001, China;
2. Institute of Gravity and Magnetic Technology, Chang'an University, Xi'an 710054, China;
3. College of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, China;
4. Key Laboratory of Western China's Mineral Resources and Geological Engineering, Ministry of Education, Chang'an University, Xi'an 710054, China
This paper deals with the improvement of the calculation accuracy of derivation in the frequency domain and studies the stability and accuracy of the local wavenumber inversion result. A comparison of the calculation accuracy between the cosine function extending edge and the minimum curvature extending edge shows that the result of minimum curvature extending edge is higher than that of the cosine function extending edge. This paper proposes a technique which uses upward continuation to a certain height to acquire the local wavenumber inversion, which solves the high-frequency interference, improves the calculation accuracy of the derivation, and also obtains stationary inversion results that use different continuation heights, thus improving the accuracy of local wavenumber stationary. The precision of the technique was tested with numerical models. The authors have attained satisfactory results, as evidenced by the fact that the stabilization of the technique was proved by the real data processing.
崔莉, 王万银. 局部波数在磁异常解释应用中的方法技术[J]. 物探与化探, 2011, 35(6): 779-784.
CUI Li, WANG Wan-yin. THE TECHNIQUE FOR APPLICATION OF LOCAL WAVENUMBER TO MAGNETIC INTERPRETATION. Geophysical and Geochemical Exploration, 2011, 35(6): 779-784.
