Correlation between lithospheric magnetic anomalies and tectonic structures in the Norwegian-Greenland region of the Arctic

• Published in: Geodynamics & Tectonophysics
• Main Authors: D. Yu. Abramova, L. M. Abramova, S. V. Filippov, Д. Ю. Абрамова, Л. М. Абрамова, С. В. Филиппов
• Format: Article in Journal/Newspaper
• Language: Russian
• Published: Institute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch 2018
• Subjects: спутниковые длинноволновые литосферные магнитные аномалии; lithospheric structure of the Norwegian-Greenland basin; satellite measurements of the geomagnetic field; satellite long-wave lithospheric magnetic anomalies; строение литосферы Норвежско-Гренландского бассейна; спутниковые измерения геомагнитного поля; Arctic; Greenland; Greenland Basin
• Online Access: https://www.gt-crust.ru/jour/article/view/671; https://doi.org/10.5800/GT-2018-9-4-0388

The studies of the deep structure and tectonics of the Arctic are important for solving the fundamental problems of modern geodynamics and developing its natural resources. This region is also of interest from the geopolitical point of view, in particular, considering the boundaries of the marginal seas. Our study aims to investigate the lithospheric (anomalous) geomagnetic field in the Norwegian-Greenland region of the Arctic and to correlate the identified anomalies with tectonic structures located in the region under study. The database includes the CHAMP satellite measurements of the modulus of the total geomagnetic field vector (the satellite operated at the altitude of ~280 km). This article describes the satellite data processing method applied to distinguish between the lithospheric part and other components of the geomagnetic field. Map showing the total vector modulus of the lithospheric field has been constructed for the studied area. The article discusses the possible nature of the lithospheric magnetic anomalies and their relation to the processes that occur under the territory of Greenland. According to our interpretation of the maps, the geomagnetic field anomalies are related to the modern large-scale geological and tectonic structures located in the studied area. The obtained results can facilitate further comprehensive geological and geophysical studies and contribute to modeling of the evolution of the lithosphere. Изучение глубинного строения и тектоники Арктики актуально для решения фундаментальных проблем современной геодинамики, освоения ее природных ресурсов, а также представляет интерес с геополитической точки зрения, в частности для определения границ шельфов окраинных морей. Цель настоящей работы – изучение литосферного (аномального) геомагнитного поля на территории норвежско-гренландской части Арктики и сопоставление выявленных аномалий с тектоническими структурами исследуемого региона. В качестве экспериментальных данных использовались измерения модуля полного вектора геомагнитного ...