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Title: Geomagnetic observations on Tristan da Cunha, South Atlantic Ocean
Type: Conference articleConference article
Participant(s):
Forfatter:  Matzka, J.
Technical University of Denmark

Author:  Olsen, Nils (Cwisno: 38306)
Technical University of Denmark
Email:

Forfatter:  Maule, C. F.
Technical University of Denmark

Forfatter:  Pedersen, L. W.
Technical University of Denmark

Forfatter:  Berarducci, A. M.
Technical University of Denmark

Forfatter:  Macmillan, S.
Technical University of Denmark
Abstract: 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 Africa and South America at 37 degrees 05' S, 12 degrees 18' W, is therefore of crucial importance. We have conducted several sets of repeat station measurements during magnetically quiet conditions (Kp 2o or less) in 2004. The procedures are described and the results are compared to those from earlier campaigns and to the predictions of various global field models. Features of the local crustal bias field and the solar quiet daily variation are discussed. We also evaluate the benefit of continuous magnetic field recordings from Tristan da Cunha, and argue that such a data set is a very valuable addition to geomagnetic satellite data. Recently, funds were set up to establish and operate a magnetometer station on Tristan da Cunha during the Swarm magnetic satellite mission (2011-2014).
Published: in journal: Annals of Geophysics (ISSN: 1593-5213), vol: 52, issue: 1, pages: 97-105, 2009
See the publication in DTU Orbit See the publication in DTU Orbit

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