Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-02T19:56:48.186Z Has data issue: false hasContentIssue false

Determining the Polar Cusp Longitudinal Location from Pc5 Geomagnetic Field Measurements at a Pair of High Latitude Stations

Published online by Cambridge University Press:  24 July 2018

Stefania Lepidi
Affiliation:
Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy
Patrizia Francia
Affiliation:
Università degli Studi dell’Aquila, L’Aquila, Italy
Lili Cafarella
Affiliation:
Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy
Domenico Di Mauro
Affiliation:
Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy
Martina Marzocchetti
Affiliation:
Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We use low frequency geomagnetic field measurements at two Antarctic stations to statistically investigate the longitudinal location of the polar cusp. The two stations are both located in the polar cap at a geomagnetic latitude close to the cusp latitude; they are separated by one hour in magnetic local time. At each station the Pc5 power maximizes when the station approaches the cusp, i.e. around magnetic local noon. The comparison between the Pc5 power at the two stations allows to determine the longitudinal location of the cusp. Our analysis is conducted considering separately different orientation of the interplanetary magnetic field. The results, which indicate longitudinal shifts of the polar cusp depending on the selected conditions, are discussed in relation to previous studies of the polar cusp location based on polar magnetospheric satellite data.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2018 

References

Lepidi, S. & Francia, P. 2002, Proceedings “SOLSPA: The Second Solar Cycle and Space Weather Euroconference”, Vico Equense (Italy), Sept. 24-29, 2001, ESA SP-477, 447-450Google Scholar
McEwen, , et al. 2016, Geophysical Mon. 215, Zhang, Y. and Paxton, L. J. eds., AGUGoogle Scholar
Moen, J., Carlson, H. C. & Sandholt, P. E. 1999, Geophys. Res. Lett., 26, 12431246CrossRefGoogle Scholar
Newell, P. T., Meng, C.-I., Sibeck, D. & Lepping, R. 1989, J. Geophys. Res., 94, 89218927CrossRefGoogle Scholar
Pitout, F., Escoubet, C. P., Klecker, B. & Reme, H. 2006, Ann. Geophysicae, 24, 30113026CrossRefGoogle Scholar
Stasiewicz, K. 1991, J. Geophy. Res., 96, doi: 10.1029/91JA01420Google Scholar
Zhou, X. W., Russell, C. T., Le, G., Fuselier, S. A. & Scudder, J. D. 1999, Geophys. Res. Lett., 26, 429432CrossRefGoogle Scholar
Zhou, X. W., Russell, C. T., Le, G., Fuselier, S. A. & Scudder, J. D. 2000, J. Geophys. Res., 105, 245252CrossRefGoogle Scholar