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Geomagnetic and Ionospheric Data Analysis Over Antarctica: a Contribution to the Long Term Trends Investigation : Volume 26, Issue 5 (28/05/2008)

By Alfonsi, L.

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Book Id: WPLBN0004001719
Format Type: PDF Article :
File Size: Pages 7
Reproduction Date: 2015

Title: Geomagnetic and Ionospheric Data Analysis Over Antarctica: a Contribution to the Long Term Trends Investigation : Volume 26, Issue 5 (28/05/2008)  
Author: Alfonsi, L.
Volume: Vol. 26, Issue 5
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Franceschi, G. D., Santis, A. D., & Alfonsi, L. (2008). Geomagnetic and Ionospheric Data Analysis Over Antarctica: a Contribution to the Long Term Trends Investigation : Volume 26, Issue 5 (28/05/2008). Retrieved from

Description: Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata, 605, 00143 Rome, Italy. The analysis of the foF2 ionosonde data acquired at mid and high latitudes reveals a general decreasing of the F2 plasma frequency over more than two solar cycles, showing steeper trends over the high latitude stations and, in particular, over Antarctica. A careful analysis of the foF2 hourly data, opportunely catalogued in different levels of magneto-ionospheric conditions, highlights the role of the geomagnetic activity in the secular change of the ionosphere and confirms the latitudinal dependence of the trends. These results suggest interesting relations with some recent findings on the rapid decrease of some important physical and statistical quantities related to the geomagnetic field over the whole globe and mainly in Antarctica. In this paper we discuss the possibility of a connection between the ionospheric trends and a possible imminent geomagnetic reversal or excursion.

Geomagnetic and ionospheric data analysis over Antarctica: a contribution to the long term trends investigation

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