Computation of Magnetic Anomalies Caused by Two-Dimensional Structures of Arbitrary Shape: Derivation and Matlab Implementation
Abstract
The very first computational and most referred in the literature algorithm of Talwani and Heirtzler (1964) for calculating of the magnetic anomaly caused by two-dimensional irregular shape subsurface structure has particular fundamental and educational significance in geophysics theory. We re-derive this algorithm from first principles and discuss previous derivation omissions. Our resulting solution differs from the original publication. Based on our new solution we present the two-dimensional forward magnetic modeling software and associated tutorials which are available for download from the website www.ualberta.ca/ vadim/software.htm. Additionally, we include the computation of the remnant magnetization which can be found using already published apparent polar wonder paths.
- Publication:
-
Geophysical Research Letters
- Pub Date:
- July 2019
- DOI:
- 10.1029/2019GL082767
- Bibcode:
- 2019GeoRL..46.7345K
- Keywords:
-
- exploration geophysics;
- forward modeling;
- induced magnetization;
- magnetic anomaly;
- remnant magnetization