Results and perspectives of tectonomagnetic investigations in the Western Antarctic

The results of long-term (1998-2005 yrs.) tectonomagnetic investigations in the Western Antarctic near the locationof Ukrainian Antarctic Station «Academic Vernadsky» are reviewed. The peculiarities of the Earth’sanomalous magnetic field and its dynamic temporal variations (tectonomagnetic anomalies...

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Bibliographic Details
Published in:Annals of Geophysics
Main Authors: Maksymchuk, Valentin Yu., Bakhmutov, Vladimir G., Horodyskyy, Yurij M., Chobotok, Ihor O.
Format: Article in Journal/Newspaper
Language:English
Published: Istituto Nazionale di Geofisica e Vulcanologia, INGV 2009
Subjects:
tectonomagnetic anomaly – geodynamics – stretching tectonic forces
Antarctic
Argentine
Antarc*
Online Access:https://www.annalsofgeophysics.eu/index.php/annals/article/view/4571
https://doi.org/10.4401/ag-4571
Description
Summary:The results of long-term (1998-2005 yrs.) tectonomagnetic investigations in the Western Antarctic near the locationof Ukrainian Antarctic Station «Academic Vernadsky» are reviewed. The peculiarities of the Earth’sanomalous magnetic field and its dynamic temporal variations (tectonomagnetic anomalies) were studied usingthe newly founded tectonomagnetic polygon. Near the Argentine Archipelago intensive tectonomagnetic effectsup to -2.8 nT/year were determined. Their spatial-temporal structure agrees with tectonic structure elements. Wesuggest that the nature of such effects is caused by a piezomagnetic effect under the influence of stretching tectonicforces (few bars per year) in sub-latitudinal direction. Perspectives of tectonomagnetic investigations in theregion are discussed.

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