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TitleModeling geomagnetic induction in submarine cables
 
AuthorChakraborty, S; Boteler, D HORCID logo; Shi, X; Murphy, B S; Hartinger, M; Wang, X; Lucas, G; Baker, J B H
SourceFrontiers in Physics 2022 p. 1-14, https://doi.org/10.3389/fphy.2022.1022475 Open Access logo Open Access
Image
Year2022
Alt SeriesNatural Resources Canada, Contribution Series 20220247
PublisherFrontiers
Documentserial
Lang.English
Mediapaper; digital; on-line
File formatpdf
SubjectsScience and Technology; Nature and Environment; magnetic induction
Illustrationsdiagrams; tables; charts
ProgramCanadian Hazard Information Service Geomagnetism and space weather
Released2022 10 31
AbstractSubmarine cables have become a vital component of our modern infrastructure. Studies have so far primarily focused on the effects of natural hazards such as submarine landslides and tsunamis that may damage cables. There are a handful of studies that examine the possibility of space weather effects on submarine cables. The main purpose of this study is to develop a computational model, based on Python, of geomagnetic induction on submarine cable. This model is used to estimate induced voltage in submarine cables following geomagnetic disturbances. It also takes into account the newly acquired knowledge from magnetotelluric studies and associated investigations of GIC in power systems. We describe the Python-based software, its working principle, inputs/outputs based on some synthetic geomagnetic field data, and compare its operational capabilities against analytical solutions. We present the results for different model inputs, and check model response to magnetic shielding from seawater. We find: (i) the seawater layer acts as a shield in the induction process: the greater the ocean depth, the smaller the seafloor geoelectric field; (ii) the model is sensitive to the ocean-earth layered conductivity structure.
Summary(Plain Language Summary, not published)
Space weather refers to the dynamic conditions on the Sun and in the space environment, in particular, in the near-Earth environment, that can affect critical infrastructure. NRCan operates the Canadian Space Weather Forecast Centre and conducts research into space weather effects on power systems, pipelines, radio communications and GNSS positioning to help Canadian industry understand and mitigate the effects of space weather. This paper describes a computational model, based on Python, of geomagnetic induction on submarine cable. This model is used to estimate induced voltage in submarine cables following geomagnetic disturbances. We describe the Python-based software, its working principle, inputs/outputs based on some synthetic geomagnetic field data, and compare its operational capabilities against analytical solutions. This has been developed as a tool for assessing the geomagnetic hazard to submarine cables.
GEOSCAN ID330622

 
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