A pilot geomagnetic and magnetotelluric survey in Mogod area of the Eastern Hangai, Mongolia
The paper are the preliminary results of the study of the hydrothermal system of Khulj, which is located in Mogod soum of Bulgan aimag, carried out using magnetotelluric and magnetic methods. Khulj’s hydrothermal system is an interesting geodynamic structure located in the area of a young volcanic m...
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doaj-fa0c51c1f202411f93469852c58f9b922020-11-25T01:52:44ZengMongolian Academy of SciencesProceedings of the Mongolian Academy of Sciences2310-47162312-29942019-10-01718110.5564/pmas.v59i2.12201220A pilot geomagnetic and magnetotelluric survey in Mogod area of the Eastern Hangai, MongoliaBatmagnai E0Tsegmed B1Nasan-Ochir T2Gantsogt S3Eldew-Ochir B4Institute of Astronomy and Geophysics, Mongolian Academy of Sciences, Ulaanbaatar, MongoliaInstitute of Astronomy and Geophysics, Mongolian Academy of Sciences Ulaanbaatar, MongoliaInstitute of Astronomy and Geophysics, Mongolian Academy of Sciences , Ulaanbaatar, MongoliaInstitute of Astronomy and Geophysics, Mongolian Academy of Sciences , Ulaanbaatar, MongoliaInstitute of Astronomy and Geophysics, Mongolian Academy of Sciences , Ulaanbaatar, MongoliaThe paper are the preliminary results of the study of the hydrothermal system of Khulj, which is located in Mogod soum of Bulgan aimag, carried out using magnetotelluric and magnetic methods. Khulj’s hydrothermal system is an interesting geodynamic structure located in the area of a young volcanic mountain in the eastern part of the Khangai Mountains. The study was carried out using two geophysical methods. The first is the magnetotelluric measurement, which registered variations of 3 components of magnetic field (Bx, By, Bz), and 2 components of electric field (Ex, Ey). In addition, we have provided a total of 8 magnetic field profiles for an area of 4 x 8 km. The sample rate of the total magnetic field was 3 seconds, which corresponds to about 3 meters. The programme’s codes are written in C ++ and Matlab and the result of this code is a programme called INV2DMAG. This programme is based on the inversion method of the Levenberq-Marquardt algorithm. Magnetotelluric results show that one-dimensional models clearly display the depth, the thickness of precipitation, as well as the thickness of the Moho boundaries. A preliminary two-dimensional magnetic structure, determined from small-length profiles, provides very useful insight into understanding the shallow deep structure of the sedimentary soil of the region in and around Mogod. In the Mogod’s hydrothermal system, we expect that the hot fluid heats up from granites, which have a deep source. For a detailed research, repeat field measurement is required to determine not only the structure of this geothermal system but also to determine the depth of the sedimentary soil.https://www.mongoliajol.info/index.php/PMAS/article/view/1220Magnetotelluric soundinggeomagnetic fieldinversion methodgeothermal system |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Batmagnai E Tsegmed B Nasan-Ochir T Gantsogt S Eldew-Ochir B |
spellingShingle |
Batmagnai E Tsegmed B Nasan-Ochir T Gantsogt S Eldew-Ochir B A pilot geomagnetic and magnetotelluric survey in Mogod area of the Eastern Hangai, Mongolia Proceedings of the Mongolian Academy of Sciences Magnetotelluric sounding geomagnetic field inversion method geothermal system |
author_facet |
Batmagnai E Tsegmed B Nasan-Ochir T Gantsogt S Eldew-Ochir B |
author_sort |
Batmagnai E |
title |
A pilot geomagnetic and magnetotelluric survey in Mogod area of the Eastern Hangai, Mongolia |
title_short |
A pilot geomagnetic and magnetotelluric survey in Mogod area of the Eastern Hangai, Mongolia |
title_full |
A pilot geomagnetic and magnetotelluric survey in Mogod area of the Eastern Hangai, Mongolia |
title_fullStr |
A pilot geomagnetic and magnetotelluric survey in Mogod area of the Eastern Hangai, Mongolia |
title_full_unstemmed |
A pilot geomagnetic and magnetotelluric survey in Mogod area of the Eastern Hangai, Mongolia |
title_sort |
pilot geomagnetic and magnetotelluric survey in mogod area of the eastern hangai, mongolia |
publisher |
Mongolian Academy of Sciences |
series |
Proceedings of the Mongolian Academy of Sciences |
issn |
2310-4716 2312-2994 |
publishDate |
2019-10-01 |
description |
The paper are the preliminary results of the study of the hydrothermal system of Khulj, which is located in Mogod soum of Bulgan aimag, carried out using magnetotelluric and magnetic methods. Khulj’s hydrothermal system is an interesting geodynamic structure located in the area of a young volcanic mountain in the eastern part of the Khangai Mountains. The study was carried out using two geophysical methods.
The first is the magnetotelluric measurement, which registered variations of 3 components of magnetic field (Bx, By, Bz), and 2 components of electric field (Ex, Ey). In addition, we have provided a total of 8 magnetic field profiles for an area of 4 x 8 km. The sample rate of the total magnetic field was 3 seconds, which corresponds to about 3 meters. The programme’s codes are written in C ++ and Matlab and the result of this code is a programme called INV2DMAG. This programme is based on the inversion method of the Levenberq-Marquardt algorithm. Magnetotelluric results show that one-dimensional models clearly display the depth, the thickness of precipitation, as well as the thickness of the Moho boundaries. A preliminary two-dimensional magnetic structure, determined from small-length profiles, provides very useful insight into understanding the shallow deep structure of the sedimentary soil of the region in and around Mogod. In the Mogod’s hydrothermal system, we expect that the hot fluid heats up from granites, which have a deep source.
For a detailed research, repeat field measurement is required to determine not only the structure of this geothermal system but also to determine the depth of the sedimentary soil. |
topic |
Magnetotelluric sounding geomagnetic field inversion method geothermal system |
url |
https://www.mongoliajol.info/index.php/PMAS/article/view/1220 |
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