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Enhancement of Potential Field Source Boundaries Using an Improved Logistic Filter
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Journal Article
Enhancement of Potential Field Source Boundaries Using an Improved Logistic Filter
2020
Overview
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.
Publisher
Springer Nature B.V
Subject
