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

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 Dst-dependent parameters. Finally, we also obtain probabilistic estimates for the magnitudes of “100 year” GMDs, finding that $$\dot{_B}$$ = 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.

Authors:
 [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
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1337100
Alternate Identifier(s):
OSTI ID: 1402241
Report Number(s):
LA-UR-16-20883
Journal ID: ISSN 1542-7390
Grant/Contract Number:
AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Space Weather
Additional Journal Information:
Journal Volume: 14; Journal Issue: 9; Journal ID: ISSN 1542-7390
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 79 ASTRONOMY AND ASTROPHYSICS; Heliospheric and Magnetospheric Physics; geomagnetic disturbances GICs GMDs

Citation Formats

Woodroffe, Jesse Richard, Morley, S. K., Jordanova, V. K., Henderson, M. G., Cowee, M. M., and Gjerloev, J. G.. The latitudinal variation of geoelectromagnetic disturbances during large (Dst ≤ ₋100 nT) geomagnetic storms. United States: N. p., 2016. Web. doi:10.1002/2016SW001376.
Woodroffe, Jesse Richard, Morley, S. K., Jordanova, V. K., Henderson, M. G., Cowee, M. M., & Gjerloev, J. G.. The latitudinal variation of geoelectromagnetic disturbances during large (Dst ≤ ₋100 nT) geomagnetic storms. United States. doi:10.1002/2016SW001376.
Woodroffe, Jesse Richard, Morley, S. K., Jordanova, V. K., Henderson, M. G., Cowee, M. M., and Gjerloev, J. G.. Tue . "The latitudinal variation of geoelectromagnetic disturbances during large (Dst ≤ ₋100 nT) geomagnetic storms". United States. doi:10.1002/2016SW001376. https://www.osti.gov/servlets/purl/1337100.
@article{osti_1337100,
title = {The latitudinal variation of geoelectromagnetic disturbances during large (Dst ≤ ₋100 nT) geomagnetic storms},
author = {Woodroffe, Jesse Richard and Morley, S. K. and Jordanova, V. K. and Henderson, M. G. and Cowee, M. M. and Gjerloev, J. G.},
abstractNote = {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 Dst-dependent parameters. Finally, we also obtain probabilistic estimates for the magnitudes of “100 year” GMDs, finding that $\dot{_B}$ = 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.},
doi = {10.1002/2016SW001376},
journal = {Space Weather},
number = 9,
volume = 14,
place = {United States},
year = {Tue Sep 20 00:00:00 EDT 2016},
month = {Tue Sep 20 00:00:00 EDT 2016}
}

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