High resolution geomagnetic field observations at Terra Nova bay, Antarctica
he preliminary results obtained from the analysis in the micropulsation frequency range of high time resolution magnetic field data recorded at the Antarctic Italian geomagnetic observatory at Terra Nova Bay for 11 consecutive days in February 1994 are reported. The spectral index over the whole Pcl...
Published in: | Annals of Geophysics |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Istituto Nazionale di Geofisica e Vulcanologia, INGV
1996
|
Subjects: | |
Online Access: | https://www.annalsofgeophysics.eu/index.php/annals/article/view/3987 https://doi.org/10.4401/ag-3987 |
id |
ftjaog:oai:ojs.annalsofgeophysics.eu:article/3987 |
---|---|
record_format |
openpolar |
spelling |
ftjaog:oai:ojs.annalsofgeophysics.eu:article/3987 2023-05-15T13:54:52+02:00 High resolution geomagnetic field observations at Terra Nova bay, Antarctica Lepidi, S. Villante, U. Vellante, M. Palangio, P. Meloni, A. 1996-11-25 application/pdf https://www.annalsofgeophysics.eu/index.php/annals/article/view/3987 https://doi.org/10.4401/ag-3987 eng eng Istituto Nazionale di Geofisica e Vulcanologia, INGV https://www.annalsofgeophysics.eu/index.php/annals/article/view/3987/4052 https://www.annalsofgeophysics.eu/index.php/annals/article/view/3987 doi:10.4401/ag-3987 Annals of Geophysics; V. 39 N. 3 (1996) Annals of Geophysics; Vol. 39 No. 3 (1996) 2037-416X 1593-5213 Geomagnetic pulsations spectral index wave polarization Antartica 04.05.05. Main geomagnetic field info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1996 ftjaog https://doi.org/10.4401/ag-3987 2022-03-27T06:36:47Z he preliminary results obtained from the analysis in the micropulsation frequency range of high time resolution magnetic field data recorded at the Antarctic Italian geomagnetic observatory at Terra Nova Bay for 11 consecutive days in February 1994 are reported. The spectral index over the whole Pcl-Pc5 frequency range is of the order of 3.5 and its value significantly increases beyond about 50 mHz. Spectral peaks in the Pc3 frequency range are common, especially during the daytime hours, and are probably due to the direct penetration of upstream waves in the cusp region. From the local time distribution of the micro pulsation power, a signifi - cant activity enhancement around the local magnetic noon emerges, in agreement with previous observations. The analysis of the signal polarisation characteristics in the horizontal plane shows a predominant CW polarisation in the Pcl-Pc3 frequency ranges with the major axis of the polarisation ellipse in the first quadrant. Article in Journal/Newspaper Antarc* Antarctic Antarctica antartic* Annals of Geophysics (INGV, Istituto Nazionale di Geofisica e Vulcanologia) Antarctic Terra Nova Bay The Antarctic Annals of Geophysics 39 3 |
institution |
Open Polar |
collection |
Annals of Geophysics (INGV, Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftjaog |
language |
English |
topic |
Geomagnetic pulsations spectral index wave polarization Antartica 04.05.05. Main geomagnetic field |
spellingShingle |
Geomagnetic pulsations spectral index wave polarization Antartica 04.05.05. Main geomagnetic field Lepidi, S. Villante, U. Vellante, M. Palangio, P. Meloni, A. High resolution geomagnetic field observations at Terra Nova bay, Antarctica |
topic_facet |
Geomagnetic pulsations spectral index wave polarization Antartica 04.05.05. Main geomagnetic field |
description |
he preliminary results obtained from the analysis in the micropulsation frequency range of high time resolution magnetic field data recorded at the Antarctic Italian geomagnetic observatory at Terra Nova Bay for 11 consecutive days in February 1994 are reported. The spectral index over the whole Pcl-Pc5 frequency range is of the order of 3.5 and its value significantly increases beyond about 50 mHz. Spectral peaks in the Pc3 frequency range are common, especially during the daytime hours, and are probably due to the direct penetration of upstream waves in the cusp region. From the local time distribution of the micro pulsation power, a signifi - cant activity enhancement around the local magnetic noon emerges, in agreement with previous observations. The analysis of the signal polarisation characteristics in the horizontal plane shows a predominant CW polarisation in the Pcl-Pc3 frequency ranges with the major axis of the polarisation ellipse in the first quadrant. |
format |
Article in Journal/Newspaper |
author |
Lepidi, S. Villante, U. Vellante, M. Palangio, P. Meloni, A. |
author_facet |
Lepidi, S. Villante, U. Vellante, M. Palangio, P. Meloni, A. |
author_sort |
Lepidi, S. |
title |
High resolution geomagnetic field observations at Terra Nova bay, Antarctica |
title_short |
High resolution geomagnetic field observations at Terra Nova bay, Antarctica |
title_full |
High resolution geomagnetic field observations at Terra Nova bay, Antarctica |
title_fullStr |
High resolution geomagnetic field observations at Terra Nova bay, Antarctica |
title_full_unstemmed |
High resolution geomagnetic field observations at Terra Nova bay, Antarctica |
title_sort |
high resolution geomagnetic field observations at terra nova bay, antarctica |
publisher |
Istituto Nazionale di Geofisica e Vulcanologia, INGV |
publishDate |
1996 |
url |
https://www.annalsofgeophysics.eu/index.php/annals/article/view/3987 https://doi.org/10.4401/ag-3987 |
geographic |
Antarctic Terra Nova Bay The Antarctic |
geographic_facet |
Antarctic Terra Nova Bay The Antarctic |
genre |
Antarc* Antarctic Antarctica antartic* |
genre_facet |
Antarc* Antarctic Antarctica antartic* |
op_source |
Annals of Geophysics; V. 39 N. 3 (1996) Annals of Geophysics; Vol. 39 No. 3 (1996) 2037-416X 1593-5213 |
op_relation |
https://www.annalsofgeophysics.eu/index.php/annals/article/view/3987/4052 https://www.annalsofgeophysics.eu/index.php/annals/article/view/3987 doi:10.4401/ag-3987 |
op_doi |
https://doi.org/10.4401/ag-3987 |
container_title |
Annals of Geophysics |
container_volume |
39 |
container_issue |
3 |
_version_ |
1766261011170459648 |