An Approach to Model Earth Conductivity Structures with Lateral Changes for Calculating Induced Currents and Geoelectric Fields during Geomagnetic Disturbances
Joint Authors
Dong, Bo
Wang, Zezhong
Pirjola, Risto
Liu, Chunming
Liu, Lianguang
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-01
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
During geomagnetic disturbances, the telluric currents which are driven by the induced electric fields will flow in conductive Earth.
An approach to model the Earth conductivity structures with lateral conductivity changes for calculating geoelectric fields is presented in this paper.
Numerical results, which are obtained by the Finite Element Method (FEM) with a planar grid in two-dimensional modelling and a solid grid in three-dimensional modelling, are compared, and the flow of induced telluric currents in different conductivity regions is demonstrated.
Then a three-dimensional conductivity structure is modelled and the induced currents in different depths and the geoelectric field at the Earth’s surface are shown.
The geovoltages by integrating the geoelectric field along specific paths can be obtained, which are very important regarding calculations of geomagnetically induced currents (GIC) in ground-based technical networks, such as power systems.
American Psychological Association (APA)
Dong, Bo& Wang, Zezhong& Pirjola, Risto& Liu, Chunming& Liu, Lianguang. 2015. An Approach to Model Earth Conductivity Structures with Lateral Changes for Calculating Induced Currents and Geoelectric Fields during Geomagnetic Disturbances. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1074665
Modern Language Association (MLA)
Dong, Bo…[et al.]. An Approach to Model Earth Conductivity Structures with Lateral Changes for Calculating Induced Currents and Geoelectric Fields during Geomagnetic Disturbances. Mathematical Problems in Engineering No. 2015 (2015), pp.1-10.
https://search.emarefa.net/detail/BIM-1074665
American Medical Association (AMA)
Dong, Bo& Wang, Zezhong& Pirjola, Risto& Liu, Chunming& Liu, Lianguang. An Approach to Model Earth Conductivity Structures with Lateral Changes for Calculating Induced Currents and Geoelectric Fields during Geomagnetic Disturbances. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1074665
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1074665