| Title | Modeling geomagnetic induction in submarine cables |
| |
| Author | Chakraborty, S ;
Boteler, D H; Shi, X; Murphy, B S; Hartinger, M; Wang, X;
Lucas, G; Baker, J B H |
| Source | Frontiers in Physics 2022 p. 1-14, https://doi.org/10.3389/fphy.2022.1022475  Open Access |
| Image |  |
| Year | 2022 |
| Alt Series | Natural Resources Canada, Contribution Series 20220247 |
| Publisher | Frontiers |
| Document | serial |
| Lang. | English |
| Media | paper; digital; on-line |
| File format | pdf |
| Subjects | Science and Technology; Nature and Environment; magnetic induction |
| Illustrations | diagrams; tables; charts |
| Program | Canadian Hazard Information Service Geomagnetism
and space weather |
| Released | 2022 10 31 |
| Abstract | Submarine 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 ID | 330622 |
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