Одномерные скоростные модели земной коры для определения параметров сейсмических событий, зарегистрированных на территории Карелии
Ключевые слова:
одномерная скоростная модель, сейсмическая станция, взрыв, гипоцентр, эпицентр, времена пробега, скорость
Аннотация
Введение: Территория Карелии располагается на юго-востоке Фенноскандинавского щита, имеет сложное геологическое строение и представлена тремя геоблоками: Карельский кратон, Беломорский подвижный пояс, Сфекофеннская складчатая область. Эти районы отличаются между собой геологическим строением, возрастом и составом слагающих их комплексов. Карелия характеризуется слабой сейсмичностью. За инструментальный период наблюдений магнитуды сейсмических событий не превышали значение 3.2. Выбор скоростной модели является важной задачей при определении параметров слабых сейсмических событий. Методика: Для изучения сейсмического режима региона была создана сейсмологическая сеть, станции которой располагаются в разных районах республики. Сейсмические станции оснащены цифровой широкополосной аппаратурой, которая регистрирует различного рода землетрясения. Обработка сейсмических данных осуществляется в программе ELRESS. Она позволяет определить время в очаге, погрешность определения времени возникновения, координаты эпицентра, погрешность определения эпицентра по широте и долготе, локальную магнитуду. Результаты и обсуждение: Значения основных параметров сейсмических событий, которые получают в процессе обработки, зависят от используемых одномерных скоростных моделей. Базовыми являются скоростная модель IASPEI-91 и AK-135. В статье представлены одномерные скоростные модели, которые используются для определения координат гипоцентров сейсмических событий, зарегистрированных на территории Карелии. Заключение: Показано, что для северных районов нужно использовать скоростную модель BARENTS, для юго-западных – модель BALTIC, а для центральных районов Карелии – скоростную модель KARELIA.
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Литература
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23. Luosto U., Tiira T., Korhonen H., Azbel I., Burmin V., Buyanov A., Kosminskay I., Ionlis V., Sharov N. Crust and upper mantle structure along the DSS Baltic profile in SE Finland. Geophysical Journal International, 1990, vol. 101, I. 1, pp. 89–110. DOI
24. Litvinenko I. V., Ankudinov S. A., Dvoretskaya L. M., Kalnin K. A., Platonenkova L. N., Romanenko N. G., Suvorova N. I., Yakovleva V. V. Glubinnyj sejsmicheskij razrez zemnoj kory Priladozh'ya i yugo-zapadnoj Karelii [Deep seismic section of the earth's crust near Ladoga and southwestern Karelia]. Zapiski Leningradskogo gornogo instituta – Notes of the Leningrad Mining Institute, 1982, vol. 92, pp. 3–9 (In Russ.)
2. Kennett B. L. N., Engdahl E. R., Buland R. Constraints on seismic velocities in the Earth from traveltimes. Geophys. J. Int, 1995, vol. 122, pp. 108–124. DOI
3. Vzryvy i zemletryaseniya na territorii Evropejskoj chasti Rossii [Explosions and earthquakes in the European part of Russia]. (Ed.) V. V. Adushkin., A. A. Malovichko. Moscow, GEOS publ., 2013, 384 p. (In Russ.)
4. Sanina I. A., Nesterkina M. A., Konstantinovskaya N. L., Kulikov V. I., Volosov S. G., Nadezhka L. I., Dubyansky A. I., Safronich I. N., Pivovarov S. P. Skorostnaya model' i osobennosti zapisej vzryvov iz Yelec-Lipeckoj zony [Velocity model and features of records of explosions from the Yelets-Lipetsk zone]. Geologicheskie opasnosti: materialy of XV All-Russian conference with international participation [Geological hazards]. Arkhangelsk, IEP ANC UBo RAN publ., 2009, pp. 396–400 (In Russ.)
5. Glaznev V. N. Kompleksnye geofizicheskie modeli litosfery Fennoskandii [Complex geophysical models of the lithosphere of Fennoscandia]. Apatity, "KaeM" publ., 2003, 252 p. (In Russ.)
6. Mints M.V., Glaznev V.N., Muravina O.M., Sokolova E.Yu. 3D model of Svecofennian Accretionary Orogen and Karelia Craton based on geology, reflection seismics, magnetotellurics and density modelling: Geodynamic speculations. Geoscience Frontiers, 2020, vol. 11, I. 3, pp. 999−1023. DOI
7. Kremenetskaya E., Asming V., Ringdal F. Seismic Location Calibration of the European Arctic. Pure and applied geophysics, 2001, vol. 158, pp. 117–128. DOI
8. Hicks E. C., Kværna T., Mykkeltveit S., Schweitzer J., Ringdal F. Travel times and attenuation relations for regional phases in the Barents Sea region. Pure and applied geophysics, 2004, vol. 161, I. 1, pp. 1–19. DOI
9. Kolehmainen K. O., Heinonen S., Komminaho K., Tiira T., Veikkolainen T. Seismic velocity models based on wide-angle refraction and reflection profiles in Finland. Helsinki: Institute of Seismology, University of Helsinki, 2022, no. T-107, 24 p.
10. Morozov A. N., Vaganova N. V. Godografy sejsmicheskih voln dlya Severa Russkoj plity po dannym Arhangel'skoj sejsmicheskoj seti [Seismic wave hodographs for the North of the Russian Plate according to the data of the Arkhangelsk seismic network]. Razvedka i ohrana nedr – Exploration and protection of mineral resources, 2011, no. 12, pp. 48–51 (In Russ.)
11. Slabunov A. I. Geologiya i geodinamika arhejskih podvizhnyh poyasov (na primere Belomorskoj provincii Fennoskandinavskogo shchita) [Geology and geodynamics of the Archean mobile belts (on the example of the White Sea province of the Fennoscandian shield)]. Petrozavodsk, Karelian Scientific Center of the RAN publ., 2008, 296 p. (In Russ.)
12. Glubinnoe stroenie i sejsmichnost' Karel'skogo regiona i ego obramleniya [Deep structure and seismicity of the Karelian region and its framing]. Ed. N. V. Sharov. Petrozavodsk, KarSC RAN publ., 2004, 353 p. (In Russ.)
13. Sokolov V. A. Geologiya Karelii [Geology of Karelia]. Leningrad, Nauka publ., 1987, 231 p. (In Russ.)
14. Koistinen T., Stephens M. B., Bogatchev V., Nordgulen O., Wennerström M. and Korhonen J., 2001. Geological Map of the Fenoscandian Shield, scale 1:2000000. Geological Surveys of Finland, Norway and Sweden and the North-West Department of Natural Resources of Russia.
15. Lahtinen R. Main geological features of Fennoscandia. Geol. Surv. Finl., 2012, vol. 53, pp. 13–18.
16. Zemletryaseniya i mikrosejsmichnost' v zadachah sovremennoj geodinamiki Vostochno-Evropejskoj platformy [Earthquakes and Microseismicity in Problems of Modern Geodynamics of the East European Platform. Book. 1: Earthquakes]. Ed. N. V. Sharov, A. A. Malovichko, Yu. K. Schukin. Petrozavodsk, Karelian Scientific Center of the RAN publ., 2007, 381 p. (In Russ.)
17. Zueva I. A., Lebedev A. A. Harakternye cherty sejsmicheskih zapisej promyshlennyh vzryvov na Kostomukshskom zhelezorudnom mestorozhdenii po dannym stancij Karel'skoj seti [Characteristic features of seismic records of industrial explosions at the Kostomuksha iron ore deposit according to the data of the stations of the Karelian network] Vestnik Voronezhskogo gosudarstvennogo universiteta. Serija: Geologija ‒ Vestnik Voronezhskogo gosudarstvennogo universiteta. Series: Geology, 2017, no. 2, pp. 133–141 (In Russ.)
18. Asming V. E. Software package for automated processing of seismic records "EL" [Software complex for automated processing of seismic records "EL"] Pribory i metodika geofizicheskogo eksperimenta – Instruments and methods of geophysical experiment. Murmansk, MIP-999 publ., 1997, pp. 125–132 (In Russ.)
19. Asming V. E. Sozdanie programmnogo kompleksa dlya avtomatizacii detektirovaniya, lokacii i interpretacii sejsmicheskih sobytij i ego ispol'zovanie dlya izucheniya sejsmichnosti Severo-Zapadnogo regiona: avtoref. diss. … kan. fiz.-mat. nauk [Creation of a software package for automating the detection, location and interpretation of seismic events and its use for studying the seismicity of the North-West region. Abstract of PhD. diss.]. Moscow, IDG RAN publ., 2004, 24 p.
20. Morozov A. N., Vaganova N. V., Sharov N. V., Konechnaya Ya. V., Mikhailova Ya. A. Sovremennaya sejsmichnost' Belomorskogo regiona [Modern seismicity of the White Sea region]. Sovremennye metody obrabotki i interpretacii sejsmologicheskih dannyh: materialy of the XII International Seismological School [Modern methods of processing and interpretation of seismological data]. Obninsk, GS RAN publ., 2017, pp. 232–235 (In Russ.)
21. The Institute of Seismology of the University of Helsinki. Seismic Bulletins. URL
22. Litvinenko I. V., Ankudinov S. A., Gavrilov I. A., Dvoretskaya L. M., Kalnin K. A., Matveeva N. N., Platonenkova L. N., Romanenko N. G. Glubinnyj razrez zemnoj kory central'noj Karelii i ego sejsmicheskaya model' [Deep section of the earth's crust in central Karelia and its seismic model]. Zapiski Leningradskogo gornogo instituta – Notes of the Leningrad Mining Institute, 1981, vol. 89, pp. 12–17 (In Russ.)
23. Luosto U., Tiira T., Korhonen H., Azbel I., Burmin V., Buyanov A., Kosminskay I., Ionlis V., Sharov N. Crust and upper mantle structure along the DSS Baltic profile in SE Finland. Geophysical Journal International, 1990, vol. 101, I. 1, pp. 89–110. DOI
24. Litvinenko I. V., Ankudinov S. A., Dvoretskaya L. M., Kalnin K. A., Platonenkova L. N., Romanenko N. G., Suvorova N. I., Yakovleva V. V. Glubinnyj sejsmicheskij razrez zemnoj kory Priladozh'ya i yugo-zapadnoj Karelii [Deep seismic section of the earth's crust near Ladoga and southwestern Karelia]. Zapiski Leningradskogo gornogo instituta – Notes of the Leningrad Mining Institute, 1982, vol. 92, pp. 3–9 (In Russ.)
Опубликован
2023-10-03
Как цитировать
Зуева, И. А., & Лебедев, А. А. (2023). Одномерные скоростные модели земной коры для определения параметров сейсмических событий, зарегистрированных на территории Карелии. Вестник ВГУ. Серия: Геология, (3), 100-108. https://doi.org/10.17308/geology/1609-0691/2023/3/100-108
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Геофизика
