Investigating the effect of various parameters on the response of magnetic targets in magnetometry method using 2D and 3D forward modeling

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AHMADI REZA; Shariati Zarch Masoumeh

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Journal: ENGINEERING GEOLOGY Year:2020 | Volume:13 | Issue:3 Page(s): 15-34

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Information Journal Paper

Title

Investigating the effect of various parameters on the response of magnetic targets in magnetometry method using 2D and 3D forward modeling

Author(s)

AHMADI REZA | Shariati Zarch Masoumeh | Issue Writer Certificate

Keywords

3D modeling

Encom ModelVision

Magnetic survey profile

Arak University of Technology campus

Geosoft Oasis montaj

Abstract

In this research, 2D and 3D synthetic modeling of targets representing common geological structures was carried out using Encom ModelVision. In this regard the effect of factors such as material type, size and dimensions, burial depth and geometrical shape of body as well as survey profiles interspacing on the response of spherical, elliptical and linear magnetic bodies representing geological structures was investigated. The results of synthetic data modeling showed that as expected, magnetic intensity is directly correlated with the size and dimensions of the buried bodies having reverse correlation with the burial depth of the body. Also the magnetic response of bodies containing regular and irregular arbitrary polygons, ellipsoid and vertical cylinder largely follows the geometric shape of the body. According to the effect of survey profiles spacing on the spherical, elliptical and linear bodies, a series of simple linear mathematical relationships with high correlation coefficient between survey profile interspacing and ratio of height to half width of magnetic anomaly were obtained. These relationships can be used in prospecting and preliminary exploration stages. The results of field surveys on the buried metallic pipes at Arak University of Technology campus, revealed that despite the selection of fix small station intervals (1m) and employing appropriate transforms and filters on the data by Geosoft Oasis montaj, overal by reducing the number of profiles the response of the buried metallic pipes, gets wider and weaker so that in some cases the trend of anomalies completely changes and even identification of target type is impossible.

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APA: Copy

AHMADI, REZA, & Shariati Zarch, Masoumeh. (2020). Investigating the effect of various parameters on the response of magnetic targets in magnetometry method using 2D and 3D forward modeling. ENGINEERING GEOLOGY, 13(3 ), 15-34. SID. https://sid.ir/paper/958592/en

Vancouver: Copy

AHMADI REZA, Shariati Zarch Masoumeh. Investigating the effect of various parameters on the response of magnetic targets in magnetometry method using 2D and 3D forward modeling. ENGINEERING GEOLOGY[Internet]. 2020;13(3 ):15-34. Available from: https://sid.ir/paper/958592/en

IEEE: Copy

REZA AHMADI, and Masoumeh Shariati Zarch, “Investigating the effect of various parameters on the response of magnetic targets in magnetometry method using 2D and 3D forward modeling,” ENGINEERING GEOLOGY, vol. 13, no. 3 , pp. 15–34, 2020, [Online]. Available: https://sid.ir/paper/958592/en

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