Publication Date:
2022-05-30
Description:
Ground-based dual-frequency GPS observations can be used to create images of electron density.This is well established for the Arctic ionosphere; here one of the first results is presented for the Antarctic. In
this study, the GPS receivers in the Antarctic are supplemented with another GPS receiver onboard CHAMP. The aim of the study is to demonstrate the technique for investigating geophysical events, for
example, an ionospheric disturbance period on 11 February 2004. The images have been validated by in-situ measurements from DMSP and CHAMP satellites, as well as Super Dual Auroral Radar Network
(SuperDARN) convection patterns, which are able to confirm the location, presence, and transportation of large-scale plasma patches. This study indicates that although the convection still dominates in the
high-latitude ionosphere, soft precipitation within the polar cap may play a role in the evolution of the polar patches. It also illustrates the potential for future multi-instrument studies of the Antarctic.
Description:
Published
Description:
1757-1765
Description:
1.7. Osservazioni di alta e media atmosfera
Description:
3.9. Fisica della magnetosfera, ionosfera e meteorologia spaziale
Description:
JCR Journal
Description:
reserved
Keywords:
GPS imaging
;
Antarctic ionosphere
;
Multi-instrument approach
;
Ionospheric disturbance
;
01. Atmosphere::01.02. Ionosphere::01.02.02. Dynamics
;
01. Atmosphere::01.02. Ionosphere::01.02.04. Plasma Physics
;
05. General::05.07. Space and Planetary sciences::05.07.01. Solar-terrestrial interaction
;
05. General::05.07. Space and Planetary sciences::05.07.02. Space weather
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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