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TitleThe Canadian experience in geomagnetic field monitoring and investigations of space weather effects on technology
AuthorBoteler, DORCID logo; Lam, H L; Trichtchenko, LORCID logo; Fiori, RORCID logo; Nikolic, L; Nikitina, LORCID logo; St-Louis, B
Source27th International Union of Geodesy and Geophysics Assembly, programme; IUGG19-2562, 2019 p. 1 Open Access logo Open Access
LinksOnline - En ligne
Alt SeriesNatural Resources Canada, Contribution Series 20180405
Meeting27th International Union of Geodesy and Geophysics Assembly / 27e Assemblée Générale de l'Union Géodésique et Géophysique Internationale; Montreal; CA; July 8-18 juillet 2019
DocumentWeb site
Mediaon-line; digital
File formathtml; pdf
ProvinceCanada; British Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut; Canada
NTS1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
Subjectsgeophysics; Science and Technology; Nature and Environment; geomagnetic fields; geomagnetic variations; magnetic storms; history; ionosphere; Canadian Magnetic Observatory Network; Canadian Geomagnetic Reference Field (Cgrf); Forecasting; north magnetic pole; Infrastructures
ProgramPublic Safety Geoscience Northern Canada Geohazards Project
Released2019 07 01
AbstractThe Canadian magnetic observatory network comprises 14 observatories spanning latitudes from the polar cap, through the auroral zone, to the sub-auroral zone. This was used for developing the Canadian Geomagnetic Reference Field (CGRF) and tracking the movement of the north magnetic pole. The geomagnetic data also provided the foundation for developing magnetic forecasts and a wide range of applications for technologies affected by space weather. A Canada-wide forecast started in the 1970s and soon evolved into 3-zone forecasts to take account of the radically different activity in the 3 zones. The forecasts were always motivated by user requirements: first the aeromagnetic survey industry, then power systems and pipelines, and then radio systems and satellites. Power system effects came to prominence with the March 1989 storm as the magnetic data was vital to understanding the associated power outage. Following this extensive studies were made using magnetic data to understand space weather effects on power systems and pipelines. The Anik-E satellite problems in 1994 focused attention on the spacecraft environment and the role of geomagnetic field variations in energising radiation belt electrons. Modern studies have focused on determining the 1-in-100 year magnetic activity levels and associated modeling work for assessing the space weather risks to ground infrastructure. Because geomagnetic field variations are associated with ionospheric disturbances, geomagnetic data is also proving valuable in developing forecasts of space weather effects on HF radio communication and GNSS positioning required for international aviation.
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 presentation describes the Canadian magnetic observatory network and how the data produced has been used for magnetic field modelling and space weather forecasting. The magnetic data is also used for a variety of applications: understanding geomagnetic effects on power systems, the energization of electrons that affect satellites, and ionospheric effects on radio communications and GNSS positioning. The geomagnetic data has also been used to determine the 1-in-100 year magnetic activity levels for assessing the space weather risks to ground infrastructure.

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