Home Journals Articles Updates About
CN
image
收藏切换
Research on Calculation of Underground Surface Current during 2021 Yangbi MS6.4 Earthquake
收藏切换
Junsong SUN1, Li WANG1, Guiping YUAN1, Xin ZHANG2, Hongyu LI1, *
Journal of Geodesy and Geodynamics | 2025, 45(1) : 91 - 96
Less
收藏切换
Journal of Geodesy and Geodynamics | 2025, 45(1): 91-96
Research on Calculation of Underground Surface Current during 2021 Yangbi MS6.4 Earthquake
Full
Junsong SUN1, Li WANG1, Guiping YUAN1, Xin ZHANG2, Hongyu LI1, *
Affiliations
  • 1 Jiangsu Earthquake Agency, 3 Weigang, Nanjing 210004, China
  • 2 Guangdong Earthquake Agency, 81 Mid-Xianlie Road, Guangzhou 510070, China

    • SUN Junsong, engineer, majors in Earth's electromagnetics, E-mail:

About Author:

SUN Junsong, engineer, majors in Earth's electromagnetics, E-mail:

Published: 2025-01-15 doi: 10.14075/j.jgg.2024.02.073
Outline
收藏切换

Based on the observation data from regional fixed geomagnetic stations, this study quantitatively investigates the large-scale geomagnetic daily variation anomalies that occurred in the Sichuan-Yunnan region before the Yangbi MS6.4 earthquake on May 21, 2021. This article is based on Biot-Savart's law and the Monte-Carlo model to invert the distribution state and depth of underground current. The results show that: 1) The spatial distribution position and depth of underground current are consistent with the distribution of underground electrical high conductors, which is consistent with the crustal current position given by previous studies. 2) There is non-uniformity in both the horizontal and vertical interfaces below the research area, and the distribution of surface currents may be related to tectonic activity. 3) The upwelling of deep thermal fluids may be one of the reasons for the concentrated distribution of underground currents.

geomagnetic diurnal variation  /  underground current  /  geological structure  /  electrical structure
孙君嵩, 王丽, 袁桂平, 章鑫, 李鸿宇. 2021年漾濞MS6.4地震地下面电流计算研究. 大地测量与地球动力学, 2025 , 45 (1) : 91 -96 . DOI: 10.14075/j.jgg.2024.02.073
Junsong SUN, Li WANG, Guiping YUAN, Xin ZHANG, Hongyu LI. Research on Calculation of Underground Surface Current during 2021 Yangbi MS6.4 Earthquake[J]. Journal of Geodesy and Geodynamics, 2025 , 45 (1) : 91 -96 . DOI: 10.14075/j.jgg.2024.02.073
Funding
Less
  • The Spark Program of Earthquake Technology of CEA(XH22001YC)
  • National Natural Science Foundation of China(42274107)
  • Basic Scientific Research Fund of Institute of Earthquake Forecasting, CEA(CEAIEF20220207)
  • The Earthquake Tracking Task of CEA(2024010406)
  • Director Fund of Jiangsu Earthquake Agency(202201)
Appendix
Less
Year 2025 volume 45 Issue 1
24
9
Cite this Article
BibTeX
Article Info
doi: 10.14075/j.jgg.2024.02.073
  • Receive Date：2024-02-23
  • Online Date：2026-10-30
  • Published：2025-01-15
Article Data
Affiliations
History
  • Received：2024-02-23
Funding
The Spark Program of Earthquake Technology of CEA(XH22001YC)
National Natural Science Foundation of China(42274107)
Basic Scientific Research Fund of Institute of Earthquake Forecasting, CEA(CEAIEF20220207)
The Earthquake Tracking Task of CEA(2024010406)
Director Fund of Jiangsu Earthquake Agency(202201)
Affiliations
    1 Jiangsu Earthquake Agency, 3 Weigang, Nanjing 210004, China
    2 Guangdong Earthquake Agency, 81 Mid-Xianlie Road, Guangzhou 510070, China
References
Share
https://castjournals.cast.org.cn/joweb/ddcl/EN/10.14075/j.jgg.2024.02.073
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House