GSTDTAP  > 气候变化
DOI10.1029/2020GL091732
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
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
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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
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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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