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http://hdl.handle.net/2122/10145
Authors: | Tozzi, R.* Pezzopane, M.* De Michelis, P.* Piersanti, M.* |
Title: | Applying a curl-B technique to Swarm vector data to estimate nighttime F region current intensities | Journal: | Geophysical Research Letters | Series/Report no.: | 15/42 (2015) | Publisher: | American Geophysical Union | Issue Date: | 10-Aug-2015 | DOI: | 10.1002/2015GL064841 | Keywords: | Swarm magnetic data current density F region |
Subject Classification: | 01. Atmosphere::01.02. Ionosphere::01.02.99. General or miscellaneous 04. Solid Earth::04.05. Geomagnetism::04.05.08. Instruments and techniques 05. General::05.01. Computational geophysics::05.01.01. Data processing |
Abstract: | The innovative geometry of European Space Agency Swarm constellation opens the way for new investigations based on magnetic data. Since the knowledge of a vector field on two spherical surfaces allows calculating its curl, we propose a new technique to estimate the curl of the ionospheric magnetic field measured by Swarm satellites A and B, orbiting the Earth at two different altitudes from March to September 2014. Using this technique, we mapped the amplitude of the radial, meridional, and zonal components and of total intensity of the ionospheric current density at the satellite's altitudes, i.e., the F region of the ionosphere, during two local nighttime intervals: before and after midnight. Most of the obtained results are consistent with some of the known features of nighttime F region currents; others need further investigation. The proposed technique could contribute in selecting magnetic data with minimum contamination from nighttime F region electric currents for magnetic modeling purposes. |
Appears in Collections: | Article published / in press |
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Tozzi et al_revised.pdf | Main article. An edited version of this paper was published by AGU. Copyright (2015) American Geophysical Union | 2.65 MB | Adobe PDF |
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