Disturbances in the US electric grid associated with geomagnetic activity
Lockheed Martin Advanced Technology Center, Palo Alto, CA, USA
* Corresponding author: e-mail: email@example.com
Accepted: 19 April 2013
Large solar explosions are responsible for space weather that can impact technological infrastructure on and around Earth. Here, we apply a retrospective cohort exposure analysis to quantify the impacts of geomagnetic activity on the US electric power grid for the period from 1992 through 2010. We find, with more than 3σ significance, that approximately 4% of the disturbances in the US power grid reported to the US Department of Energy are attributable to strong geomagnetic activity and its associated geomagnetically induced currents.
Key words: solar magnetic activity / geomagnetic disturbances / US electric power grid / geomagnetically induced currents
© C.J. Schrijver and S.D. Mitchell, Published by EDP Sciences 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.