Enhancement of Potential Field Source Boundaries Using an Improved Logistic Filter
Detection of source horizontal boundaries is a common feature in the interpretation of magnetic and gravity data. A wide range of derivative- and phase-based methods are available to solve this problem. Here, we compare the effectiveness of the commonly used methods, and introduce a method based on...
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| Veröffentlicht in: | Pure and applied geophysics 2020-11, Vol.177 (11), p.5237-5249 |
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| container_title | Pure and applied geophysics |
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| creator | Pham, Luan Thanh Van Vu, Tich Le Thi, Sang Trinh, Phuong Thi |
| description | Detection of source horizontal boundaries is a common feature in the interpretation of magnetic and gravity data. A wide range of derivative- and phase-based methods are available to solve this problem. Here, we compare the effectiveness of the commonly used methods, and introduce a method based on the logistic function and the horizontal gradient amplitude, which shows improved performance as a boundary detection filter. The effectiveness of the proposed filter is demonstrated by evaluating synthetic examples and a real example from the Central Puget Lowland (United States). The main advantage of this method is that it provides high-resolution results, and can avoid producing spurious boundaries in the output maps. |
| doi_str_mv | 10.1007/s00024-020-02542-9 |
| format | Article |
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| subjects | Boundaries Detection Earth and Environmental Science Earth Sciences Geophysics/Geodesy Gravity data Methods Potential fields |
| title | Enhancement of Potential Field Source Boundaries Using an Improved Logistic Filter |
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