Abstract
Natural emission of methane from geologic sources has been recently recognized as an important component of the atmospheric methane budget. While some authors have focused their attention only on submarine gas seepage and gas hydrates, recent studies have suggested that also mud volcanoes (MVs) on land and microseepage in hydrocarbon-prone areas are significant methane sources. A new global estimate of methane flux from MVs has recently been made on the basis of new experimental flux data (including diffuse microseepage around craters and vents), and a new data-set on MV sizes. The emission results conservatively to be between 6 and 9 Mt/y, that is, the same level as the ocean and hydrates sources. The global geological methane flux, including MVs, submarine seepage, microseepage in petroliferous basins and geothermal flux, would conservatively amount to 35–45 Mt/y, that is, comparable to other sources or sinks considered in the IPCC tables.
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References
Dimitrov, L.I., 2002. Mud volcanoes — the most important pathway for degassing deeply buried sediments., Earth-Science Rev., 59, 49–76.
Etiope, G., 1999. Subsoil CO2 and CH4 and their advective transfer from faulted grassland to the atmosphere, J. Geophys. Res., 104D, 16889–16894.
Etiope, G., Caracausi, A., Favara, R., Italiano, F., and Baciu, C. 2002. Methane emission from the mud volcanoes of Sicily (Italy), Geoph. Res. Lett., 29, 8, 10.1029/2001GL014340.
Etiope, G., Caracausi, A., Favara, R., Italiano, F., and Baciu, C. 2003. Reply to comment by A. Kopf on “Methane emission from the mud volcanoes of Sicily (Italy)”, and notice on CH4 flux data from European mud volcanoes, Geoph. Res. Lett., 30 2, 1094, doi: 10.1029/2002GL016287.
Etiope, G., Baciu, C., Caracausi, A., Italiano, F., and Cosma C., 2004. Gas flux to the atmosphere from mud volcanoes in Eastern Romania, Terra Nova, 16,4, 179–184.
Etiope, G. and Klusman, R.W., 2002. Geologic emissions of methane into the atmosphere., Chemosphere, 49, 777–789.
Etiope, G. and Milkov, A.V., 2004. A new estimate of global methane flux from onshore and shallow submarine mud volcanoes to the atmosphere, Environm. Geology, in press.
Intergovernmental Panel on Climate Change, 2001. In Climate Change 2001: The scientific basis, Houghton, J.T., Ding, Y., Griggs, D.J., Noguer, M., van der Linden, P.J., Dai, X., Maskell, K., Johnson, C.A. (Eds.) Cambridge Univ. Press., Cambridge
Jakubov, A.A., Alizade, A.A., and Zeinalov, M.M., 1971. Mud volcanoes of the Azerbaijan SSR, Atlas, Elm, Publishing House of the Academy of Sciences of Azerbaijan SSR, Baku (in Russian).
Judd, A. G., 2000. Geological sources of methane. In: Atmospheric Methane: its role in the global environment, Khalil, M. (Ed.), Springer-Verlag, New York, NY, 280–303.
Judd, A.G., Hovland, M., Dimitrov, L.I., Garcia Gil, S., Jukes, V., 2002. The geological methane budget at Continental Margins and its influence on climate change, Geofluids, 2, 109–126.
Kopf, A.J., 2002. Significance of mud volcanism, Rev. Geophysics, 40, 2, 1005, doi: 10.1029/2000RG000093.
Kvenvolden, K.A., Lorenson, T.D. and Reeburgh, W., 2001. Attention turns to naturally occurring methane seepage, EOS, 82, 457.
Milkov, A.V., Sassen, R., Apanasovich, T.V., Dadashev, F.G., 2003. Global gas flux from mud volcanoes: a significant source of fossil methane in the atmosphere and the ocean, Geoph. Res. Lett., 30,2, 1037, doi:10.1029/2002GL016358.
Norman, J.M., Kucharik, C.J., Gower, S.T., Baldocchi, D.D., Crill, P.M., Rayment, M., Savage, K., and Striegl, R.G., 1997. A comparison of six methods for measuring soil-surface carbon dioxide fluxes, J. Geophys. Res., 102D, 28771–28777.
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Etiope, G. (2005). Methane Emission from Mud Volcanoes. In: Martinelli, G., Panahi, B. (eds) Mud Volcanoes, Geodynamics and Seismicity. NATO Science Series, vol 51. Springer, Dordrecht. https://doi.org/10.1007/1-4020-3204-8_12
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DOI: https://doi.org/10.1007/1-4020-3204-8_12
Publisher Name: Springer, Dordrecht
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