Geomagnetic observations on Tristan da Cunha, South Atlantic Ocean
Few geomagnetic ground observations exist of the Earth’s strongest core field anomaly, the South Atlantic Anomaly(SAA). The geomagnetic repeat station on the island Tristan da Cunha, located half-way between South Africaand South America at 37° 05’ S, 12° 18’ W, is therefore of crucial importance. W...
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Istituto Nazionale di Geofisica e Vulcanologia, INGV
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ftjaog:oai:ojs.annalsofgeophysics.eu:article/4633 2023-05-15T18:21:04+02:00 Geomagnetic observations on Tristan da Cunha, South Atlantic Ocean Matzka, Jürgen Olsen, Nils Fox Maule, Cathrine Pedersen, Lars William Berarducci, Alan M. Macmillan, Susan 2009-01-25 application/pdf https://www.annalsofgeophysics.eu/index.php/annals/article/view/4633 https://doi.org/10.4401/ag-4633 eng eng Istituto Nazionale di Geofisica e Vulcanologia, INGV https://www.annalsofgeophysics.eu/index.php/annals/article/view/4633/4700 https://www.annalsofgeophysics.eu/index.php/annals/article/view/4633 doi:10.4401/ag-4633 Annals of Geophysics; V. 52 N. 1 (2009); 97-105 Annals of Geophysics; Vol. 52 No. 1 (2009); 97-105 2037-416X 1593-5213 South Atlantic Anomaly – geomagnetic observatory – geomagnetic repeat station – Tristan da Cunha info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2009 ftjaog https://doi.org/10.4401/ag-4633 2022-03-27T06:37:15Z Few geomagnetic ground observations exist of the Earth’s strongest core field anomaly, the South Atlantic Anomaly(SAA). The geomagnetic repeat station on the island Tristan da Cunha, located half-way between South Africaand South America at 37° 05’ S, 12° 18’ W, is therefore of crucial importance. We have conducted several sets ofrepeat station measurements during magnetically quiet conditions (Kp 2o or less) in 2004. The procedures are describedand the results are compared to those from earlier campaigns and to the predictions of various global fieldmodels. Features of the local crustal bias field and the solar quiet daily variation are discussed. We also evaluatethe benefit of continuous magnetic field recordings from Tristan da Cunha, and argue that such a data set is a veryvaluable addition to geomagnetic satellite data. Recently, funds were set up to establish and operate a magnetometerstation on Tristan da Cunha during the Swarm magnetic satellite mission (2011-2014). Article in Journal/Newspaper South Atlantic Ocean Annals of Geophysics (INGV, Istituto Nazionale di Geofisica e Vulcanologia) Tristan ENVELOPE(140.900,140.900,-66.735,-66.735) Annals of Geophysics 52 1 |
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Open Polar |
collection |
Annals of Geophysics (INGV, Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftjaog |
language |
English |
topic |
South Atlantic Anomaly – geomagnetic observatory – geomagnetic repeat station – Tristan da Cunha |
spellingShingle |
South Atlantic Anomaly – geomagnetic observatory – geomagnetic repeat station – Tristan da Cunha Matzka, Jürgen Olsen, Nils Fox Maule, Cathrine Pedersen, Lars William Berarducci, Alan M. Macmillan, Susan Geomagnetic observations on Tristan da Cunha, South Atlantic Ocean |
topic_facet |
South Atlantic Anomaly – geomagnetic observatory – geomagnetic repeat station – Tristan da Cunha |
description |
Few geomagnetic ground observations exist of the Earth’s strongest core field anomaly, the South Atlantic Anomaly(SAA). The geomagnetic repeat station on the island Tristan da Cunha, located half-way between South Africaand South America at 37° 05’ S, 12° 18’ W, is therefore of crucial importance. We have conducted several sets ofrepeat station measurements during magnetically quiet conditions (Kp 2o or less) in 2004. The procedures are describedand the results are compared to those from earlier campaigns and to the predictions of various global fieldmodels. Features of the local crustal bias field and the solar quiet daily variation are discussed. We also evaluatethe benefit of continuous magnetic field recordings from Tristan da Cunha, and argue that such a data set is a veryvaluable addition to geomagnetic satellite data. Recently, funds were set up to establish and operate a magnetometerstation on Tristan da Cunha during the Swarm magnetic satellite mission (2011-2014). |
format |
Article in Journal/Newspaper |
author |
Matzka, Jürgen Olsen, Nils Fox Maule, Cathrine Pedersen, Lars William Berarducci, Alan M. Macmillan, Susan |
author_facet |
Matzka, Jürgen Olsen, Nils Fox Maule, Cathrine Pedersen, Lars William Berarducci, Alan M. Macmillan, Susan |
author_sort |
Matzka, Jürgen |
title |
Geomagnetic observations on Tristan da Cunha, South Atlantic Ocean |
title_short |
Geomagnetic observations on Tristan da Cunha, South Atlantic Ocean |
title_full |
Geomagnetic observations on Tristan da Cunha, South Atlantic Ocean |
title_fullStr |
Geomagnetic observations on Tristan da Cunha, South Atlantic Ocean |
title_full_unstemmed |
Geomagnetic observations on Tristan da Cunha, South Atlantic Ocean |
title_sort |
geomagnetic observations on tristan da cunha, south atlantic ocean |
publisher |
Istituto Nazionale di Geofisica e Vulcanologia, INGV |
publishDate |
2009 |
url |
https://www.annalsofgeophysics.eu/index.php/annals/article/view/4633 https://doi.org/10.4401/ag-4633 |
long_lat |
ENVELOPE(140.900,140.900,-66.735,-66.735) |
geographic |
Tristan |
geographic_facet |
Tristan |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Annals of Geophysics; V. 52 N. 1 (2009); 97-105 Annals of Geophysics; Vol. 52 No. 1 (2009); 97-105 2037-416X 1593-5213 |
op_relation |
https://www.annalsofgeophysics.eu/index.php/annals/article/view/4633/4700 https://www.annalsofgeophysics.eu/index.php/annals/article/view/4633 doi:10.4401/ag-4633 |
op_doi |
https://doi.org/10.4401/ag-4633 |
container_title |
Annals of Geophysics |
container_volume |
52 |
container_issue |
1 |
_version_ |
1766200133341413376 |