Methane seeps in the Black Sea: discovery, quantification and environmental assessment

Yıl 2011, Cilt: 17 Sayı: 2, 171 - 185, 01.08.2011

Viktor N. Egorov Yuriy G. Artemov Sergei B. Gulin Gennadiy G. Polikarpov

Öz

Abstract This review describes methodology and software developments for acoustic data acquisition and determining parameters of gas bubble streams; shows geographical distribution of more than 3000 seeps in the Black Sea; presents data on methane fluxes from the deep-sea mud volcanoes; gives a model for evaluation of gas exchange in the water environment and methane emission from gas seeps to water column and atmosphere; explains modern views on the impact of cold seeps on the hydrochemical characteristics of the marine environment, the vertical water exchange, methanotrophic chemosynthesis and trophic structure of water; reveals a new form of life in the anoxic water column of the Black Sea, which is represented by a symbiotic community of anaerobic archaea and methane oxidizing and sulfate-reducing bacteria; contains estimates of potential environmental hazards due to methane discharge from the bottom of the Black Sea, and outlooks the possible use of cold seeps as a resource factors because they can be indications for shallow or deep hydrocarbon accumulations.

Anahtar Kelimeler

Key words: Black Sea, gas seeps, methane emission

Kaynakça

• Aloisi, G., Abegg, F., Blinova, V., Drews, M., Greinert, J., Ivanov, M., Bohrmann, G. (2002) Seafloor sampling results. In: Marine gas hydrates of the Black Sea (MARGASCH): R/V Meteor cruise report M52/1 (eds., G. Bohrmann & S. Schenck). GEOMAR, Kiel, Germany: 102-116.
• Artemov, Yu. G. (2006) Software support for investigation of natural methane seeps by hydroacoustic method. Mar. Ecol. J. 5(1): 57-71.
• Artemov, Yu. G., Egorov, V.N., Polikarpov, G.G., Gulin, S.B. (2007) Methane emission to the hydro – and atmosphere by gas bubble streams in the Dnieper paleo-delta, the Black Sea. Mar. Ecol. J. 6(3): 5-26.
• Boetius, A., Revenschlag, K., Schubert, C.J., Rickert, D., Widdel, F., Gieseke, A., Armann, R., Jorgensen, B. B., Witte, U., Pfannkuche, O. (2000) A marine microbial consortium apparently mediating anaerobic oxidation of methane. Nature 407: 623-626.
• Calvert, S.E., Vogel, J.S., Southon, J.R. (1987) Carbon accumulation rates and the origin of the Holocene sapropel in the Black Sea. Geology 15: 918-921.
• Clift, R., Grace J.R., Weber M.E.. (1978) Bubbles, Drops, and Particles. Elsevier, New York: 380 p.
• Degens, E.T., Stoffers, P., Olubic, S., Dickman, M.D. (1980) Varve chronology: Estimated rates of sedimentation in the Black Sea deep basin. In: Initial Reports of the Deep Sea Drilling Project, vol. 42B (ed., D.A. Ross). U.S. Government Printing Office, Washington, DC, USA: 499-508.
• Deuser, W.G. (1974) Evolution of anoxic conditions in Black Sea during Holocene. In: The Black Sea - Geology, Chemistry and Biology (eds.) E.T. Degens, D.A. Ross. The American Association of Petroleum Geologists, Tusla, Oklahoma, USA: 133-136.
• Dimitrov, P., Dachev, V., Nikolov, H., Parlichev, D. (1979) Natural gas seepages in the offshore area of Balchik Bay. Oceanology 4: 43– 49 (in Bulgarian).
• Egorov, V.N., Luth, U., Luth, C., Gulin, M.B. (1998). Gas seeps in the submarine Dnieper Canyon, Black Sea: acoustic, video and trawl data. In: U. Luth, C. Luth and H. Thiel (Editors), Methane gas seep explorations in the Black Sea (MEGASEEBS), Project Report. Ber. Zentrum Meeres- u. Klimaforsch. Universität Hamburg, Hamburg: 11- 21.
• Egorov, V.N., Polikarpov, G.G., Gulin, S.B., Artemov, Y.G., Stokozov, N.A., Kostova, S.K. (2003) Present-day views on the environment-forming and ecological role of the Black Sea methane gas seeps. Mar. Ecol. J. 2 (3): 5-26 (in Russian).
• Egorov, V.N., Artemov, Yu.G., Gulin, S.B. (2011) Methane seeps in the Black Sea: environment-forming and ecological role (ed., G.G. Polikarpov). ECOSEA-Hydrophysics, Sevastopol: 405 p.
• Gevorkyan, V.H., Burakov, V.I., Isagulova, U.K., Semeonov, D.V., Malahov, V.P., Oleinik, F.I., Gryazanov, A.S., Shevchenko, A.F. (1991) Gas venting sea bottom build ups in the north-western Black Sea part. (Doklady) USSR Acad. Sci. 297 (4): 80–85 (in Russian).
• Gulin, S.B., Artemov, Yu.G. (2007) Study of the Black Sea methane seeps during international expedition of RV “Meteor” (Germany) in February 2007. Mar. Ecol. J. 6(2): 98-100.
• Gulin, S.B., Polikarpov, G.G., Egorov, V.N. (2003) The age of microbial carbonate structures grown at methane seeps in the Black Sea with an implication of dating of the seeping methane. Marine Chemistry 84(1-2): 67-72.
• Hay, B.J., Arthur, M.A., Dean, W.E., Neff, E.D., Honjo, S. (1991) Sediment deposition in the Late Holocene abyssal Black Sea with climatic and chronological implications. Deep-Sea Research 38 (suppl. 2): 1211-1236.
• Ivanov, M.V., Polikarpov, G.G., Lein, A.Yu., Galtchenko, V. N., Egorov, S. B., Gulin M. B., Gulin, I. I., Miller, Yu. M., Kuptsov, V. I. (1991) Biogeochemistry of carbon cycle at the methane seeps of the Black Sea. Proc. USSR Acad. Sci. 320(5): 1235-1240 (in Russian).
• Krastel, S., Spiess, V., Ivanov, M., Weinrebe, W., Bohrmann, G., Shashkin, P., Heidersdorf F. (2003) Acoustic investigations of mud volcanoes in the Sorokin Trough, Black Sea. Geo-Marine Letters 23: 230-238.
• Lein, A.Yu., Ivanov, M.V., Pimenov, N.V. (2002) Genesis of Methane from Cold Methane Seeps in the Dnieper Canyon, the Black Sea. Dokl. Earth Sci. 387 (8): 979-980.
• Michaelis, W., Seifert, R., Nauhaus, K., Treude, T., Thiel, V., Blumenberg, M., Knittel, K., Gieseke, A., Peterknecht, K., Pape, T., Boetius, A., Amann, R., Jİrgensen, B.B., Widdel, F., Peckmann, J., Pimenov, N. V., Gulin, M. B. (2002) Microbial reefs in the Black Sea fuelled by anaerobic oxidation of methane. Science 297: 1013-1015.
• Naudts, L., Greinert, J., Artemov, Y., De Batist, M. (2006) Geological and morphological setting of 2778 methane seeps in the Dnepr paleo- delta, northwestern Black Sea. Marine Geology 227(3-4): 177-199.
• Polikarpov, G.G., Egorov, V.N. (1989). Active gas-releases from the Black Sea bottom has been discovered. Visnyk Acad. Sci. of Ukrainian SSR, 10, Oct. 19: 108. (in Ukrainian).
• Polikarpov, G.G., Egorov, V.N., Gulin, S.B., Gulin, M.B., Stokozov, N. A. (1992) Gas seeps from the Black Sea bottom – a new object of molismology. In: Molismology of the Black Sea (ed., G.G. Polikarpov), Naukova Dumka, Kiev: 10-28 (in Russian).
• Polikarpov, G.G., Ivanov, M.V., Gulin, S.B., Gulin, M.B. (1993) Deposition of methane carbon in the carbon-ate chimneys grown in anoxic zone at the Black Sea slope. Proc. Ukrainian Ac. Sci. 7: 93-94 (in Russian).
• Ryan, W.B.F., Pittman, I.I.I., Major, C.O., Shimkus, K., Moskalenko, V., Jones, G.A., Dimitrov, P., Gorür, N., Sakinc, M., Yüce, H. (1997) An abrupt drowning of the Black Sea shelf. Mar. Geol. 138: 119-126. Shnukov, E.F., Sobolevskiy, Yu.V., Kutniy, V.A. (1995) Unusual carbonate build-ups at continental slope of the north-western Black Sea – an apparent consequence of the degassing of sediments. Lithology and Minerals 5: 541-461 (in Russian).
• Shnukov, E., Pasnikov, A., Kleshtenko, S. (1999) Gas Vents on the Bottom of the Black Sea. NANU Publishing House, Kiev: 133 p. (in Russian)
• Shnukov, E.F., Lein, A.Y., Egorov V.N., Kleshenko S.A., Gulin S.B., Artemov, Y.G., Arslanov, H.A, Kutnyi, V.A., Logvina E.A. (2004) Discovery in the Black Sea of deep-water biogenic buildups. Proc. Ukrainian Ac. Sci. 1: 118-123 (in Russian).
• Thiel, V., Peckmann, J., Richnow, H.H., Luth, U., Reitner, J., Michaelis, W. (2001) Molecular signals for anaerobic methane oxidation in Black Sea seep carbonates and a microbial mat. Marine Chemistry 73(2): 97-112.
• Wakeham, S.G., Damste, J.S.S., Kohnen, M.E.L., de Leeuw, J.W. (1995) Organic sulfur compounds formed during early diagenesis in Black Sea sediments. Geochimica et Cosmochimica Acta 59(3): 521- 533.