A comparison between centroid and forward modeling methods in order to estimate curie point depth using spectral analysis of aeromagnetic data for geothermal exploration

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Heidarnejad Sanami Peyvand; NEJATI KALATEH ALI

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Journal: JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS Year:2019 | Volume:4 | Issue:2 Page(s): 401-412

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Information Journal Paper

Title

A comparison between centroid and forward modeling methods in order to estimate curie point depth using spectral analysis of aeromagnetic data for geothermal exploration

Author(s)

Heidarnejad Sanami Peyvand | NEJATI KALATEH ALI | Issue Writer Certificate

Keywords

Geo Thermal

Radially Power Spectra

Forward Modeling

Centroid Method

Curie Point

Abstract

Geothermal energy can be a good replacement for any kind of energy we use today. Estimation of Curie Point depth (CPD) is one of the first steps in geothermal exploration. Spectral analysis of aeromagnetic data can provide important information about temperature distribution in depth. In this study, we attempt to estimate the CPD using Centroid Method and Forward Modeling in northwest of Iran. The reduced-to-pole (RTP) aeromagnetic data were divided into 11 overlapping windows of the size of 100 100 km. In the Centroid Method, the average depth to the top of the deepest crustal block, t Z was first computed by linear fitting to the second longest wavelength segment of the power spectrum of aeromagnetic data. Then, depth to the centroid of the deepest crustal block, o Z was computed by linear fitting to the longest wavelength segment of power spectrum of aeromagnetic data. In Forward Modeling, the modelled spectra were fitted to the observed spectrum iteratively and the depth to the top and bottom of the block was finally estimated. According to the obtained results, the CPD is shallow in the west part of the area and as a comparison of the results with the locations of hot springs in the area, we conclude that the west part of the area has a good potential for geothermal exploration. ...

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APA: Copy

Heidarnejad Sanami, Peyvand, & NEJATI KALATEH, ALI. (2019). A comparison between centroid and forward modeling methods in order to estimate curie point depth using spectral analysis of aeromagnetic data for geothermal exploration. JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS, 4(2 ), 401-412. SID. https://sid.ir/paper/268582/en

Vancouver: Copy

Heidarnejad Sanami Peyvand, NEJATI KALATEH ALI. A comparison between centroid and forward modeling methods in order to estimate curie point depth using spectral analysis of aeromagnetic data for geothermal exploration. JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS[Internet]. 2019;4(2 ):401-412. Available from: https://sid.ir/paper/268582/en

IEEE: Copy

Peyvand Heidarnejad Sanami, and ALI NEJATI KALATEH, “A comparison between centroid and forward modeling methods in order to estimate curie point depth using spectral analysis of aeromagnetic data for geothermal exploration,” JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS, vol. 4, no. 2 , pp. 401–412, 2019, [Online]. Available: https://sid.ir/paper/268582/en

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