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Manifestation of the Gothenburg geomagnetic field excursion in the Barents Sea bottom sediments |
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| Authors: | E G Guskova O M Raspopov A L Piskarev V A Dergachev |
| Institution: | (1) Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, St. Petersburg Branch, Russian Academy of Sciences, Muchnoi per. 2, St. Petersburg, 191023, Russia;(2) All-Russia Research Institute of Oceanic Geology (VNII Okeangeologiya), St. Petersburg, Russia;(3) Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia |
| Abstract: | An analysis of the paleomagnetic characteristics of the bottom sediments taken in 2000 in the northern Barents Sea for the first time revealed the Gothenburg geomagnetic field excursion (13 000–12 000 years ago) at the time boundary of the transition from the glacial period to the recent warm epoch (the Holocene). The obtained data confirm the excursion complex structure: the presence of two successive time intervals of variations in the geomagnetic field inclination. An increase in the magnetic susceptibility and natural remanent magnetization of the samples at the above boundary and about 15 000 years ago indicates that the magnetic parameters of the sediments respond to climate changes in the environment in this time interval. |
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