FLUID DYNAMICS PROCESSES AT THE CENTRAL SAKHALIN FAULT (BASED ON OBSERVATIONS OF THE YUZHNO-SAKHALINSK MUD VOLCANO)
https://doi.org/10.5800/GT-2012-3-4-0078
Abstract
The Yuzhno-Sakhalinsk mud volcano is located in the southern part of the Sakhalin Island within the area of the Central Sakhalin fault, one of the largest disjunctive dislocations of the island. The volcano was monitored during field seasons in the period from 2005 to 2007, and data on flow rates, chemical and isotope compositions of gases, temperature and chemical composition of watermud mixture in the volcano’s blowouts were collected and analysed. During the observation period, seismic activity in the region under study was significantly variable in time and space. The monitoring results revealed «traces» of two earthquakes in the blowout activity of the Yuzhno-Sakhalinsk mud volcano – the Gornazavodsk earthquake, that took place on 17 (18) August 2006, and the Nevelsk earthquake of 2 August 2007. Based on results of our analyses of the field data and mathematical simulation data, it is possible to conclude that an additional inflow of «deep geofluids» could not have been a major trigger of the activity of the volcano after the earthquakes. In our opinion, all the observed anomalies may result from «water – rock – gas» interactions in the top part of the mud volcano’s feeder channel. A combination of water and gas flows in the volcano’s channel and silica-alumina rocks comprises a specific geochemical system that is sensitive to external (seismic) impacts. Therefore, comprehensive consideration of physical and chemical processes within fluid-dynamic systems is required for assurance of correct interpretation of empirical data.
About the Author
Valery V. Ershov
Institute of Marine Geology and Geophysics, Far East Branch of RAS
Russian Federation
Russian Federation
Researcher,
1B Nauki street, Yuzhno-Sakhalinsk 693022
References
1. Aliev Ad.A., 2006. Mud volcanism of the South Caspian basin. Geologiya i poleznye iskopaemye Mirovogo okeana 3, 35–51 (in Russian) [Алиев Ад.А. Грязевой вулканизм Южно-Каспийского нефтегазоносного бассейна // Геология и полезные ископаемые Мирового океана. 2006. № 3. С. 35–51].
2. Astakhov A.S., Sergeev K.F., Mel’nikov O.A., Prisyazhnyuk A.V., Shakirov R.B., Brovko P.F., Kiselev V.I., 2002. Dynamics of defluidization of the deepseated Central Sakhalin fault during seismic activation: results of monitoring of the Southern Sakhalin mud volcano in July–August 2001. Doklady Earth Sciences 386 (7), 742–747.
3. Bonini M., 2009. Mud volcano eruptions and earthquakes in the Northern Apennines and Sicily, Italy. Tectonophysics 474 (1–3), 723–735. http://dx.doi.org/10.1016/j.tecto.2009.05.018.
4. Chaudhuri H., Ghose D., Bhandari R.K., Sen P., Sinha B., 2012. A geochemical approach to earthquake reconnaissance at the Baratang mud volcano, Andaman and Nicobar Islands. Journal of Asian Earth Sciences 46, 52–60. http://dx.doi.org/10.1016/j.jseaes.2011.10.007.
5. Deville E., Guerlais S.H., 2009. Cyclic activity of mud volcanoes – evidences from Trinidad (SE Caribbean). Marine and Petroleum Geology 26 (9), 1681–1691. http://dx.doi.org/10.1016/j.marpetgeo.2009.03.002.
6. Domanskii A.V., Ershov V.V., 2010. Modeling of the seismic influence on dynamics of processes of mud volcanism. Vestnik DVO RAN 6, 94–100 (in Russian) [Доманский А.В., Ершов В.В. Моделирование сейсмического воздействия на динамику грязе-вулканических процессов // Вестник ДВО РАН. 2010. № 6. С. 94–100].
7. Domanskii A.V., Ershov V.V., 2011. Fluid-dynamic modeling of mud volcanism. Russian Geology and Geophysics 52 (3), 368–376. http://dx.doi.org/10.1016/j.rgg.2011.02.009.
8. Domanskii A.V., Ershov V.V., Levin B.W., 2009. A mathematical model of unsteady flows of geofluids in mud volcanic processes. Doklady Earth Sciences 424 (1), 95–98. http://dx.doi.org/10.1134/S1028334X09010206.
9. Ershov V.V., Domanskii A.V., Levin B.V., 2010a. Modeling of the temperature regime of mud volcano gryphons. Doklady Earth Sciences 435 (1), 1529–1534. http://dx.doi.org/10.1134/S1028334X10110267.
10. Ershov V.V., Levin B.W., Mel’nikov O.A., Domansky A.V., 2008. Manifestations of the Nevelsk and Gornozavodsk Earthquakes of 2006–2007 in the dynamics of gryphon activity of the Yuzhno-Sakhalinsk Gas-Water-Lithoclastic (Mud) Volcano. Doklady Earth Sciences 423 (2), 1443–1447. http://dx.doi.org/10.1134/S1028334X08090262.
11. Ershov V.V., Shakirov R.B., Melnikov O.A., Kopanina A.V., 2010b. Changes of features to activity of the mud volcano and their relationship with seismicity of the south of the Sakhalin Island. Regionalnaya geologiya i metallogeniya 42, 49–57 (in Russian) [Ершов В.В., Шакиров Р.Б., Мельников О.А., Копанина А.В. Вариации параметров грязевулканической деятельности и их связь с сейсмичностью юга острова Сахалин // Региональная геология и металлогения. 2010. № 42. С. 49–57].
12. Ershov V.V., Shakirov R.B., Obzhirov A.I., 2011. Isotopic–geochemical characteristics of free gases of the South Sakhalin mud volcano and their relationship to regional seismicity. Doklady Earth Sciences 440 (1), 1334–1339. http://dx.doi.org/10.1134/S1028334X11090169.
13. Kasyanova N.A., 2003. Ecological Risks and Geodynamics. Nauchnyj mir, Moscow, 332 p. (in Russian) [Касьянова Н.А. Экологические риски и геодинамика. М.: Научный мир, 2003. 332 с.].
14. Kopf A., Delisle G., Faber E., Panahi B., Aliyev C.S., Guliyev I., 2010. Longterm in situ monitoring at Dashgil mud volcano, Azerbaijan: a link between seismicity, porepressure transients and methane emission. International Journal of Earth Sciences 99 (1), 227–240. http://dx.doi.org/10.1007/s0053100904874.
15. Manga M., Brumm M., Rudolph M.L., 2009. Earthquake triggering of mud volcanoes. Marine and Petroleum Geology 26 (9), 1785–1798. http://dx.doi.org/10.1016/j.marpetgeo.2009.01.019.
16. Martinelli G., Dadomo A., 2005. Mud volcanoes, geodynamics and seismicity: Proceedings of the NATO Advanced Research Workshop, Baku, Azerbaijan, 20–22 May, 2003. Mud volcano monitoring and seismic events 51, 187–199.
17. Mel’nikov O.A., 1987. Structure and Geodynamics of Hokkaido-Sakhalin Folded Area. Nauka, Moscow, 95 p. (in Russian) [Мельников О.А. Структура и геодинамика Хоккайдо-Сахалинской складчатой области. М.: Наука, 1987. 95 с.].
18. Mel’nikov O.A., 2002. Dislocations and seismicity of a southern part of the Tym-Poronaisk upthrust-overthrust area. In: Tectonics, geodynamics, magmatism, metallogeny and seismicity of the Pacific segment of the Earth. IMGiG DVO RAN, YuzhnoSakhalinsk, p. 50–88 (in Russian) [Мельников О.А. Дислокации и сейсмичность южной части зоны Тымь-Поронайского взбросо-надвига // Тектоника, геодинамика, магматизм, металлогения и сейсмичность Тихоокеанского сегмента Земли. Южно-Сахалинск: ИМГиГ ДВО РАН, 2002. С. 50–88].
19. Mel’nikov O.A., Ershov V.V., 2010. Mud (gaswater lithoclastic) volcanism Sakhalin Island: history, results and perspective of the studies. Vestnik DVO RAN 6, 87–93 (in Russian) [Мельников О.А., Ершов В.В. Грязевой (газоводолитокластитовый) вулканизм острова Сахалин: история, результаты и перспективы исследований // Вестник ДВО РАН. 2010. № 6. С. 87–93].
20. Mel’nikov O.A., Ershov V.V., Kim C.U., Sen R.S., 2008. Dynamics of the gryphon activity of gaswater lithoclastic (mud) volcanoes and their relation to the natural seismicity as exemplified by Yuzhno-Sakhalinsk volcano (Sakhalin Island). Russian Journal of Pacific Geology 2 (5), 397–411. http://dx.doi.org/10.1134/S1819714008050035.
21. Mellors R., Kilb D., Aliyev A., Gasanov A., Yetirmishli G., 2007. Correlations between earthquakes and large mud volcano eruptions. Journal of Geophysical Research 112 (4), 11. http://dx.doi.org/10.1029/2006JB004489.
22. Namiot A.Yu., 1991. Solubility of Gases in Water. Nedra, Moscow, 167 p. (in Russian) [Намиот А.Ю. Растворимость газов в воде. М.: Недра, 1991. 167 с.].
23. Panahi В.М., 2005. Mud volcanism, geodynamics and seismicity of Azerbaijan and the Caspian Sea region. Mud volcanoes, geodynamics and seismicity: Proceedings of the NATO Advanced Research Workshop, Baku, Azerbaijan, 20–22 May, 2003. Springer, Dordrecht, p. 89–104.
24. Panahi B.M., Rakhmanov R.R., 1993. Mud volcano’s earthquakes. Vulkanologiya i seismologiya 2, 98–102 (in Russian) [Панахи Б.М., Рахманов Р.Р. Грязевулканические землетрясения // Вулканология и сейсмология. 1993. № 2. С. 98–102].
25. Prytkov A.S., 2008. Present crustal movements of Sakhalin-Kuril region and modeling of geodynamics processes as of GPS observations. Ph.D. Thesis. IMGiG DVO RAN, Yuzhno-Sakhalinsk, 22 p. (in Russian) [Прытков А.С. Современные движения земной коры Сахалино-Курильского региона и моделирование геодинамических процессов по данным GPSнаблюдений: Автореф. дис. … канд. физ.мат. наук. Южно-Сахалинск: ИМГиГ ДВО РАН, 2008. 22 с.].
26. Safonov D.A., 2008. Dynamics of seismicity of South Sakhalin on base modern instrumental and macroseismic data. Ph.D.Thesis. IMGiG DVO RAN, Yuzhno-Sakhalinsk, 24 p. (in Russian) [Сафонов Д.А. Динамика сейсмичности Южного Сахалина на основе современных инструментальных и макросейсмических данных: Автореф. дис. … канд. физ.мат. наук. Южно-Сахалинск: ИМГиГ ДВО РАН, 2008. 24 с.].
27. Shakirov R., Obzhirov A., Suess E., Salyuk A., Biebow N., 2004. Mud volcanoes and gas vents in the Okhotsk Sea area. GeoMarine Letter 24 (3), 140–149. http://dx.doi.org/10.1007/s003670040177y.
28. Voitov G.I., 2001. Chemical and carbon isotope instabilities in the gryphon gases of mud volcanoes: An example of the Southern Caspian and Taman mudvolcano province. Geochemistry International 39 (4), 373–383.
29. Yang T.F., Fu C.C., Walia V., Chen C.H., Chyi L.L., Liu T.K., Song S.R., Lee M., Lin C.W., Lin C.C., 2006. Seismo-geochemical variations in SW Taiwan: multi-parameter automatic gas monitoring results. Pure and applied geophysics 163 (4), 693–709. http://dx.doi.org/10.1007/s0002400600403.
Review
For citations:
Ershov V.V. FLUID DYNAMICS PROCESSES AT THE CENTRAL SAKHALIN FAULT (BASED ON OBSERVATIONS OF THE YUZHNO-SAKHALINSK MUD VOLCANO). Geodynamics & Tectonophysics. 2012;3(4):345-360. (In Russ.) https://doi.org/10.5800/GT-2012-3-4-0078
Views:
1122
Email this article 