Product catalogue
Modeling geomagnetic induction hazards using a 3-D electrical conductivity model of Australia
The surface electric field induced by external geomagnetic source fields is modeled for a continental-scale 3-D electrical conductivity model of Australia at periods of a few minutes to a few hours. The amplitude and orientation of the induced electric field at periods of 360 s and 1800 s are presented and compared to those derived from a simplified ocean-continent (OC) electrical conductivity model. It is found that the induced electric field in the Australian region is distorted by the heterogeneous continental electrical conductivity structures and surrounding oceans. On the northern coastlines, the induced electric field is decreased relative to the simple OC model due to a reduced conductivity contrast between the seas and the enhanced conductivity structures inland. In central Australia, the induced electric field is less distorted with respect to the OC model as the location is remote from the oceans, but inland crustal high-conductivity anomalies are the major source of distortion of the induced electric field. In the west of the continent, the lower conductivity of the Western Australia Craton increases the conductivity contrast between the deeper oceans and land and significantly enhances the induced electric field. Generally, the induced electric field in southern Australia, south of latitude −20°, is higher compared to northern Australia. This paper provides a regional indicator of geomagnetic induction hazards across Australia.
<b>Citation:</b> Wang, L., A. M. Lewis, Y. Ogawa, W. V. Jones, and M. T. Costelloe (2016), Modeling geomagnetic induction hazards using a 3-D electrical conductivity model of Australia, <i>Space Weather</i>, 14, 1125–1135, doi:10.1002/2016SW001436
Simple
Identification info
- Date (Creation)
- 2022-04-28
- Date (Publication)
- 2024-02-08T00:29:47
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/146527
- Cited responsible party
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Role Organisation / Individual Name Details Author Wang, L.
Place and Communities Internal Contact Author Lewis, A.
Place and Communities Internal Contact Author Ogawa, Y.
External Contact Author Jones, W.V.
External Contact Author Costelloe, M.
MEG Internal Contact Publisher AGU Publications
External Contact
- Name
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Space Weather
- Issue identification
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Volume 14, Issue 12, December 2016
- Page
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1125-1135
- Purpose
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Article for submission to Space Weather Journal
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Resource provider Place and Communities Division
External Contact Point of contact Wang, L.
Place and Communities Internal Contact
- Spatial representation type
- Topic category
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- Geoscientific information
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
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Product data repository: Various Formats
- Website
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- theme.ANZRC Fields of Research.rdf
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EARTH SCIENCES
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- Keywords
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induced electrical fields
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- Keywords
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3D Model
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- Keywords
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electrical conductivity model
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- Keywords
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geomagnetic induction hazards
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
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4.0
- Access constraints
- License
- Use constraints
- License
- Other constraints
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©2016. The Authors.
Resource constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Classification system
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Australian Government Security Classification System
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice facsimile
- OnLine resource
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Link to Journal
Link to Journal
- Distribution format
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Resource lineage
- Statement
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Article for submission to Space Weather Journal
Metadata constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/5f6a95d2-adfd-436f-ba8c-f154f11bbfdc
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Owner Wang, L.
Place and Communities Internal Contact Point of contact Wang, L.
Place and Communities Internal Contact
Type of resource
- Resource scope
- Document
- Name
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Journal Article
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/146527
- Date info (Creation)
- 2022-04-28T03:38:50
- Date info (Revision)
- 2022-04-28T03:38:50
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551