gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2020-11-3-0492gtcrust-1087Research ArticleСОВРЕМЕННАЯ ГЕОДИНАМИКАRECENT GEODYNAMICSНеоднородное строение магнитоактивного слоя Курильской островной дугиInhomogeneous structure of magnetic layer of the Kuril Island ArcПальшинН. А.PalshinN. A.

117997, Москва, Нахимовский пр-т, 36.

Nikolay A. Palshin.36 Nahimovskiy Ave, Moscow 117997.

palshin@ocean.ruИваненкоА. Н.IvanenkoA. N.

117997, Москва, Нахимовский пр-т, 36.

36 Nahimovskiy Ave, Moscow 117997.

АлексеевД. А.AlekseevD. A.

117997, Москва, Нахимовский пр-т, 36; 141701, Долгопрудный, Институтский пер., 9; 123242, Москва, ул. Большая Грузинская, 10, стр. 1.

 

36 Nahimovskiy Ave, Moscow 117997; 9 Institutskiy Ln, Moscow Reg, Dolgoprudny 141701; 10/1 Bolshaya Gruzinskaya St, Moscow 123242.

Институт океанологии им. П.П. Ширшова РАНРоссияShirshov Institute of Oceanology, Russian Academy of SciencesRussian FederationИнститут океанологии им. П.П. Ширшова РАН; Московский физико-технический институт (Национальный исследовательский университет); Институт физики Земли им. О.Ю. Шмидта РАНРоссияShirshov Institute of Oceanology, Russian Academy of Sciences; Moscow Institute of Physics and Technology; Schmidt Institute of Physics of the Earth, Russian Academy of SciencesRussian Federation202023092020113583594Copyright © Пальшин Н.А., Иваненко А.Н., Алексеев Д.А., 20202020Пальшин Н.А., Иваненко А.Н., Алексеев Д.А.Palshin N.A., Ivanenko A.N., Alekseev D.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.gt-crust.ru/jour/article/view/1087

На основе оригинальной технологии инверсии аномального магнитного поля построены двумерные модели магнитоактивного слоя по трем профилям, пересекающим Курильскую островную дугу в южной, центральной и северной части. В северной и южной части островной дуги во фронтальной зоне уверенно выделяется зона повышенной эффективной намагниченности. В центральной части дуги зона повышенной намагниченности выражена существенно слабее. Аномальные зоны положительной эффективной намагниченности имеют глубинную часть, которая соответствует так называемому «серпентинитовому валу». Выявленное неоднородное латеральное строение магнитоактивного слоя Курильской островной дуги свидетельствует о различиях во флюидном режиме и находит свое отражение в распределении современной сейсмичности.

An innovative technology of anomalous magnetic field inversion was applied to construct 2D models of the magnetic layer using three profiles crossing the southern, central and northern parts of the Kuril Island Arc. In the frontal area of the northern and southern parts, a zone of increased effective magnetization is clearly distinguished. In the central part of the island arc, increased magnetization is much less pronounced. Anomalous zones of positive effective magnetization have a deep part, the so-called "serpentinite wedge". The inhomogeneous lateral structure of the magnetic layer of the Kuril Island Arc suggests differences in the fluid regime and is reflected in the distribution of modern seismicity.

 

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The authors declare that there are no conflicts of interest present.