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Title: The latitudinal variation of geoelectromagnetic disturbances during large (Dst ≤ ₋100 nT) geomagnetic storms

Journal Article · · Space Weather
DOI:https://doi.org/10.1002/2016SW001376· OSTI ID:1337100
 [1]; ORCiD logo [1];  [1];  [1];  [1];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Space Science and Applications
  2. Johns Hopkins Univ., Laurel, MD (United States). Applied Physics Laboratory; Bergen Univ. (Norway). Birkeland Centre for Space Science

Abstract Geoelectromagnetic disturbances (GMDs) are an important consequence of space weather that can directly impact many types of terrestrial infrastructure. In this paper, we analyze 30 years of SuperMAG magnetometer data from the range of magnetic latitudes 20°≤ λ ≤75° to derive characteristic latitudinal profiles for median GMD amplitudes. Based on this data, we obtain a parameterization of these latitudinal profiles of different types of GMDs, providing an analytical fit with D s t ‐dependent parameters. We also obtain probabilistic estimates for the magnitudes of “100 year” GMDs, finding that  = 6.9 (3.60–12.9) nT/s should be expected at 45°≤ λ < 50°, exceeding the 5 nT/s threshold for dangerous inductive heating.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1337100
Alternate ID(s):
OSTI ID: 1402241
Report Number(s):
LA-UR-16-20883
Journal Information:
Space Weather, Vol. 14, Issue 9; ISSN 1542-7390
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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