gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2024-15-1-0735IJXYVRgtcrust-1787Research ArticleСОВРЕМЕННАЯ ГЕОДИНАМИКАRECENT GEODYNAMICSДЕФОРМАЦИОННОЕ ВЗАИМОДЕЙСТВИЕ СИЛЬНЫХ ЗЕМЛЕТРЯСЕНИЙ 2010–2016 гг. В ЗОНЕ ВЛИЯНИЯ СУПЕРПЛЮМА ХИКУРАНГИ (НОВАЯ ЗЕЛАНДИЯ) ПО ДАННЫМ GPS-НАБЛЮДЕНИЙDEFORMATION INTERACTION OF STRONG EARTHQUAKES OF 2010–2016 IN THE ZONE OF INFLUENCE OF THE HIKURANGA SUPERPLUME (NEW ZEALAND) ACCORDING TO GPS OBSERVATIONShttps://orcid.org/0000-0002-8857-9584КафтанВ. И.KaftanV. I.

119296, Москва, ул. Молодежная, 3

3 Molodezhnaya St, Moscow 119296

https://orcid.org/0000-0003-3284-8738ДокукинП. А.DokukinP. A.

117198, Москва, ул. Миклухо-Маклая, 6

6 Miklukho-Maklay St, Moscow 117198

https://orcid.org/0000-0001-7486-6104МаневичА. И.ManevichA. I.

119296, Москва, ул. Молодежная, 3

3 Molodezhnaya St, Moscow 119296

https://orcid.org/0000-0001-7546-2072ТатариновВ. Н.TatarinovV. N.

119296, Москва, ул. Молодежная, 3; 123242, Москва, ул. Большая Грузинская, 10, стр. 1

3 Molodezhnaya St, Moscow 119296; 10-1 Bolshaya Gruzinskaya St, Moscow 123242

https://orcid.org/0000-0003-3461-6383ШевчукР. В.ShevchukR. V.

119296, Москва, ул. Молодежная, 3; 123242, Москва, ул. Большая Грузинская, 10, стр. 1

3 Molodezhnaya St, Moscow 119296; 10-1 Bolshaya Gruzinskaya St, Moscow 123242

Геофизический центр РАНРоссияGeophysical Center of the Russian Academy of SciencesRussian FederationРоссийский университет дружбы народов им. Патриса ЛумумбыРоссияPeoples' Friendship University of Russia named after Patrice LumumbaRussian FederationГеофизический центр РАН; Институт физики Земли им. О.Ю. Шмидта РАНРоссияGeophysical Center of the Russian Academy of Sciences; Schmidt Institute of Physics of the Earth, Russian Academy of SciencesRussian Federation202415022024151735735Copyright © Кафтан В.И., Докукин П.А., Маневич А.И., Татаринов В.Н., Шевчук Р.В., 20242024Кафтан В.И., Докукин П.А., Маневич А.И., Татаринов В.Н., Шевчук Р.В.Kaftan V.I., Dokukin P.A., Manevich A.I., Tatarinov V.N., Shevchuk R.V.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/1787

С 2010 по 2016 г. на территории Новой Зеландии произошла серия из 11 сильных землетрясений M>6. В области, охватывающей эпицентральные зоны этих сейсмических событий, на основе данных непрерывных спутниковых GPS-наблюдений на 64 пунктах геодезической сети получены пространственно-временные характеристики движений и деформаций земной коры. По ним было выполнено исследование эволюции горизонтальных движений и деформаций с целью выявления возможной взаимосвязи наблюдаемых деформационных и сейсмических процессов. Анализу была подвергнута деформация полного сдвига, так как основные тектонические структуры региона представляют собой разломы со сдвиговым механизмом смещения их бортов. Присутствие в данном районе гигантского мантийного суперплюма послужило причиной исследования поведения горизонтальной деформации дилатации, горизонтальных и вертикальных движений земной коры. На основании полученных цифровых моделей деформаций были сформированы кинематические визуализации, представляющие собой синоптические анимации, обеспечивающие прямые наблюдения за сейсмодеформационным процессом и их эвристический анализ. В результате исследования было установлено, что серии сильнейших землетрясений могут быть взаимосвязаны длительным во времени единым деформационным процессом, начало которого обусловлено образованием аномальной деформации полного сдвига. Концентрация генерального максимума сдвиговой деформации, деформации дилатации, горизонтальных и вертикальных смещений сосредоточена в центре активности мантийного суперплюма. Перед сильными сейсмическими событиями в области будущих эпицентров возникают зоны дефицита (минимума) смещений земной коры, что представляет интерес для исследований в области прогноза мест возникновения сильных землетрясений.

Between 2010 and 2016, a series of 11 strong M>6 earthquakes occurred in New Zealand. In the area covering the epicentral zones of these seismic events, the spatiotemporal characteristics of movements and deformations of the Earth’s crust were obtained based on the processing of continuous satellite GPS observations at 64 points of the geodetic network. Using these data, we have studied the evolution of horizontal movements and deformations in order to reveal the possible relationship between the observed deformational and seismic processes. Analysis has been made on the total shear deformation, since the main tectonic structures of the region are faults with a shear mechanism of displacement of their sides. The presence of a giant mantle superplume in the area was the reason for the study of the behavior of horizontal dilatation deformation, and horizontal and vertical crustal motions. Based on the obtained digital deformation models, there were created kinematic visualizations, which are synoptic animations providing direct observations of the seismic deformation process and their heuristic analysis. The study revealed that a series of the strongest earthquakes may be interconnected by a long-term single deformation process, which is caused by the occurrence of an anomalous total shear deformation. The general maximum of shear deformation, dilatation deformation, and horizontal and vertical displacements are concentrated in the center of mantle superplume activity. Prior to strong seismic events, there occur zones of deficit (minimum) displacements of the Earth’s crust in the area of future epicenters, which is of research interest in terms of predicting their locations.

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