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DOI | 10.1029/2020GL091732 |
Magnetic anomalies caused by 2D polygonal structures with uniform arbitrary polarization: new insights from analytical/numerical comparison among available algorithm formulations | |
Alessandro Ghirotto; Andrea Zunino; Egidio Armadillo; Klaus Mosegaard | |
2021-02-24 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Since the ’60s of the last century, the calculation of the magnetic anomalies caused by 2D uniformly‐polarized bodies with polygonal cross‐section has been mainly performed using the popular algorithm of Talwani & Heirtzler (1962, 1964). Recently, Kravchinsky et al. (2019) claimed errors in the above algorithm formulation, proposing new corrective formulas and questioning the effectiveness of almost sixty years of magnetic calculations. Here we show that the two approaches are equivalent and Kravchinsky et al.’s formulas simply represent an algebraic variant of those of Talwani & Heirtzler. Moreover, we analyze a large amount of random magnetic scenarios, involving both changing‐shape polygons and a realistic geological model, showing a complete agreement among the magnetic responses of the two discussed algorithms and the one proposed by Won & Bevis (1987). We release the source code of the algorithms in Julia and Python languages. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/315856 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Alessandro Ghirotto,Andrea Zunino,Egidio Armadillo,et al. Magnetic anomalies caused by 2D polygonal structures with uniform arbitrary polarization: new insights from analytical/numerical comparison among available algorithm formulations[J]. Geophysical Research Letters,2021. |
APA | Alessandro Ghirotto,Andrea Zunino,Egidio Armadillo,&Klaus Mosegaard.(2021).Magnetic anomalies caused by 2D polygonal structures with uniform arbitrary polarization: new insights from analytical/numerical comparison among available algorithm formulations.Geophysical Research Letters. |
MLA | Alessandro Ghirotto,et al."Magnetic anomalies caused by 2D polygonal structures with uniform arbitrary polarization: new insights from analytical/numerical comparison among available algorithm formulations".Geophysical Research Letters (2021). |
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