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Quantification of high latitude electric field variability

Crowley, G. and Hackert, C.L. (2001) Quantification of high latitude electric field variability. Geophysical Research Letters, 28 (14). pp. 2783-2786. ISSN 0094-8276

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    Abstract

    Variability in the high latitude electric field has been identified as a major contributor to global Joule heating. Electric field patterns from the Assimilative Mapping of Ionospheric Electrodynamics (AMIE) procedure are used to characterize the E-field temporal variability over the course of 18 hours. The standard deviation of the E-field magnitude on May 4, 1998 often exceeds the average value of the E-field magnitude. A significant fraction of this variability arises from oscillations with period less than one hour. This confirms that Joule heating calculations based on time-averaged E-fields may significantly under-predict the heating.

    Item Type: Article
    Journal or Publication Title: Geophysical Research Letters
    Additional Information: Copyright (2001) American Geophysical Union
    Uncontrolled Keywords: magnetometer
    Subjects:
    Departments:
    ID Code: 35335
    Deposited By: Dr Steve Marple
    Deposited On: 20 Jan 2011 09:22
    Refereed?: Yes
    Published?: Published
    Last Modified: 07 Apr 2014 14:48
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/35335

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