gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2022-13-2s-0627gtcrust-1449Research ArticleСОВРЕМЕННАЯ ГЕОДИНАМИКАRECENT GEODYNAMICSПОСТРОЕНИЕ СЕЙСМОТОМОГРАФИЧЕСКОЙ МОДЕЛИ РАЙОНА НАУЧНО-ИССЛЕДОВАТЕЛЬСКОЙ СТАНЦИИ «ОСТРОВ САМОЙЛОВСКИЙ» ПО ДАННЫМ ЛОКАЛЬНОГО СЕЙСМОЛОГИЧЕСКОГО МОНИТОРИНГА ЗА 2019–2021 гг.BUILDING A TOMOGRAPHIC VELOCITY MODEL FOR SAMOYLOV ISLAND AREA (LENA DELTA) FROM LOCAL SEISMOLOGICAL DATA FOR THE PERIOD OF 2019–2021ДергачП. А.DergachP. A.

630090, Новосибирск, ул. Пирогова, 1;

630090, Новосибирск, пр-т Академика Коптюга, 3

1 Pirogov St, Novosibirsk 630090;

3 Academician Koptyug Ave, Novosibirsk 630090

DergachPA@ipgg.sbras.ruЕпонешниковаЛ. Ю.EponeshnikovaL. Y.

630090, Новосибирск, ул. Пирогова, 1;

630090, Новосибирск, пр-т Академика Коптюга, 3

1 Pirogov St, Novosibirsk 630090;

3 Academician Koptyug Ave, Novosibirsk 630090

ПонасенкоС. Н.PonasenkoS. N.

630090, Новосибирск, ул. Пирогова, 1;

630090, Новосибирск, пр-т Академика Коптюга, 3

1 Pirogov St, Novosibirsk 630090;

3 Academician Koptyug Ave, Novosibirsk 630090

КартозияА. А.KartoziiaA. A.

630090, Новосибирск, ул. Пирогова, 1;

630090, Новосибирск, пр-т Академика Коптюга, 3

1 Pirogov St, Novosibirsk 630090;

3 Academician Koptyug Ave, Novosibirsk 630090

ГайсслерВ. Х.GeisslerW. H.

27570, Бремерхафен, Ам Хандельсхафен, 12

12 Am Handelshafen, Bremerhaven 27570

ДучковА. А.DuchkovA. A.

630090, Новосибирск, ул. Пирогова, 1;

630090, Новосибирск, пр-т Академика Коптюга, 3

1 Pirogov St, Novosibirsk 630090;

3 Academician Koptyug Ave, Novosibirsk 630090

ШибаевС. В.ShibaevS. V.

677007, Якутск, пр-т Ленина, 39, Республика Якутия

39 Lenin Ave, Yakutsk 677007, Republic of Sakha (Yakutia)

ЗобнинГ. Ю.ZobninG. Y.

630090, Новосибирск, ул. Пирогова, 1;

630090, Новосибирск, пр-т Академика Коптюга, 3

1 Pirogov St, Novosibirsk 630090;

3 Academician Koptyug Ave, Novosibirsk 630090

Новосибирский государственный университет; Институт нефтегазовой геологии и геофизики им. А.А. Трофимука СО РАНРоссияNovosibirsk State University; Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of SciencesRussian FederationНовосибирский государственный университет; Институт нефтегазовой геологии и геофизики им. А.А. Трофимука СО РАН; Институт геологии и минералогии им. В.С. Соболева СО РАНРоссияNovosibirsk State University; Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences; Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesRussian FederationИнститут полярных и морских исследований им. Альфреда ВегенераГерманияAlfred Wegener Institute Helmholtz Centre for Polar and Marine ResearchGermanyЯкутский филиал ФИЦ ЕГС РАНРоссияYakut Branch of the Federal Research Center of the Geophysical Survey, Russian Academy of SciencesRussian Federation202218042022132627627Copyright © Дергач П.А., Епонешникова Л.Ю., Понасенко С.Н., Картозия А.А., Гайсслер В.Х., Дучков А.А., Шибаев С.В., Зобнин Г.Ю., 20222022Дергач П.А., Епонешникова Л.Ю., Понасенко С.Н., Картозия А.А., Гайсслер В.Х., Дучков А.А., Шибаев С.В., Зобнин Г.Ю.Dergach P.A., Eponeshnikova L.Y., Ponasenko S.N., Kartoziia A.A., Geissler W.H., Duchkov A.A., Shibaev S.V., Zobnin G.Y.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/1449

В работе приведены результаты сейсмотомографической инверсии по данным локального сейсмологического мониторинга, полученным в районе научно-исследовательской станции «Остров Самойловский» (дельта р. Лены) в 2019–2021 гг. Полученная сейсмотомографическая модель была использована для уточнения гипоцентров локальных землетрясений и геологической интерпретации. Результаты приведены в виде скоростных аномалий P- и S-волн, а также их соотношения Vp /Vs , для глубин 5 и 10 км. Анализ структуры скоростных аномалий позволил интерпретировать зону пониженного соотношения Vp /Vs как слой пород, относящийся к Сибирской платформе, а также сопоставить границу области пониженного Vp /Vs с известным геологическим разломом, проходящим вдоль Оленёкской протоки. 

In our paper we present the results of seismotomographic inversion for the local seismological monitoring data obtained in the area of the Samoylov Island (Lena River delta) in 2019–2021. Tomographic velocity model was used for refining hypocenter locations of local earthquakes and for geological interpretation. The results are shown as maps of anomalies of seismic waves and Vp /Vs ratios for the 5 and 10 km depths. The velocity anomalies structure made it possible to interpret low Vp /Vs ratio as rocks related to the Siberian platform, and to compare between the boundary of the low Vp /Vs area and the trace of the known geological fault running along the Olenekskaya Channel. 

локальная сейсмологиясейсмическая томографиягеодинамический мониторинглокальная сейсмичностьуточнение параметров гипоцентровуточнение скоростной моделинизкочастотная деконволюциягеофонlocal seismologyseismic tomographygeodynamical monitoringlocal seismicityhypocenter relocationvelocity model improvementlow-frequency deconvolutiongeophoneРабота выполнена в рамках проекта НИР АААА-А19-119102490050-2 ИНГГ СО РАН, а также по государственному заданию ИГМ СО РАН.Research project АААА-А19-119102490050-2 of IPGG SB RAS and State assignment of IGM SB RAS.ReferencesДергач П.А., Логинов Г.Н., Яскевич С.В., Ульянов Н.А., Пятаев Е.Е. Алгоритм детектирования сигналов от слабых локальных землетрясений на основе сверточной нейронной сети // Геомодель 2021: Тезисы докладов 23-й конференции по вопросам геологоразведки и разработки месторождений нефти и газа (6–10 сентября, 2021 г.). EAGE, 2021. 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The authors declare that there are no conflicts of interest present.