Results and perspectives of tectonomagnetic investigations in the Western Antarctic

• Published in: Annals of Geophysics
• Main Authors: Ihor O. Chobotok, Yurij M. Horodyskyy, Vladimir G. Bakhmutov, Valentin Yu. Maksymchuk
• Format: Article in Journal/Newspaper
• Language: English
• Published: Istituto Nazionale di Geofisica e Vulcanologia (INGV) 2009
• Subjects: tectonomagnetic anomaly – geodynamics – stretching tectonic forces; Meteorology. Climatology; QC851-999; Geophysics. Cosmic physics; QC801-809; Antarctic; Argentine; Antarc*
• Online Access: https://doi.org/10.4401/ag-4571; https://doaj.org/article/26899b46529643eb9f6f4eea7678f7fd

The results of long-term (1998-2005 yrs.) tectonomagnetic investigations in the Western Antarctic near the location of Ukrainian Antarctic Station «Academic Vernadsky» are reviewed. The peculiarities of the Earth’s anomalous magnetic field and its dynamic temporal variations (tectonomagnetic anomalies) were studied using the newly founded tectonomagnetic polygon. Near the Argentine Archipelago intensive tectonomagnetic effects up to -2.8 nT/year were determined. Their spatial-temporal structure agrees with tectonic structure elements. We suggest that the nature of such effects is caused by a piezomagnetic effect under the influence of stretching tectonic forces (few bars per year) in sub-latitudinal direction. Perspectives of tectonomagnetic investigations in the region are discussed.