Results and perspectives of tectonomagnetic investigations in the Western Antarctic

• 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

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.