Earth-prints: Reappraisal of the fossil methane budget and related emission from geologic sources

Clarke, R. H., and R. W. Cleverly (1991), Leakage and post-accumulation

migration, in Petroleum Migration, edited by W. A. England and A. J.

Fleet, Geol. Soc. Spec. Publ., 59, 265– 271.

Denman, K. L., et al. (2007), Couplings between changes in the climate

system and biogeochemistry, in Climate Change 2007: The Physical

Science Basis. Contribution of Working Group I to the Fourth Assessment

Report of the Intergovernmental Panel on Climate Change, edited by

S. Solomon et al., chap. 7, pp. 499 – 587, Cambridge Univ. Press,

Cambridge, U.K.

Dimitrov, L. (2002), Mud volcanoes—The most important pathway for

degassing deeply buried sediments, Earth Sci. Rev., 59, 49–76.

Etiope, G. (2004), GEM—Geologic emissions of methane, the missing

source in the atmospheric methane budget, Atmos. Environ., 38, 3099–

3100.

Etiope, G. (2008), Natural emissions of methane from geological sources in

Europe, Atmos. Environ., doi:10.1016/j.atmosenv.2008.03.014, in press.

Etiope, G., and R. W. Klusman (2002), Geologic emissions of methane to

the atmosphere, Chemosphere, 49, 777– 789.

Etiope, G., and R. W. Klusman (2008), Microseepage in drylands: Flux and

implications in the global atmospheric source/sink budget of methane,

Global Planet. Change, in press.

Etiope, G., and A. V. Milkov (2004), A new estimate of global methane flux

from onshore and shallow submarine mud volcanoes to the atmosphere,

Environ. Geol., 46, 997–1002.

Etiope, G., A. Feyzullayev, C. L. Baciu, and A. V. Milkov (2004), Methane

emission from mud volcanoes in eastern Azerbaijan, Geology, 32, 465–

468.

Etiope, G., G. Papatheodorou, D. Christodoulou, G. Ferentinos, E. Sokos,

and P. Favali (2006), Methane and hydrogen sulfide seepage in the NW

Peloponnesus petroliferous basin (Greece): Origin and geohazard, AAPG

Bull., 90, 701– 713.

Etiope, G., G. Martinelli, A. Caracausi, and F. Italiano (2007a), Methane

seeps and mud volcanoes in Italy: Gas origin, fractionation and emission

to the atmosphere, Geophys. Res. Lett., 34, L14303, doi:10.1029/

2007GL030341.

Etiope, G., T. Fridriksson, F. Italiano, W. Winiwarter, and J. Theloke

(2007b), Natural emissions of methane from geothermal and volcanic

sources in Europe, J. Volcanol. Geotherm. Res., 165, 76 – 86,

doi:10.1016/j.jvolgeores.2007.04.014.

Etiope, G., A. V. Milkov, and E. Derbyshire (2008), Did geologic emissions

of methane play any role in Quaternary climate change?, Global Planet.

Change, 61, 79–88, doi:10.1016/j.gloplacha.2007.08.008.

European Environment Agency (2004), Joint EMEP/CORINAIR Atmospheric

Emission Inventory Guidebook, 4th ed., Copenhagen. (Available

at http://reports.eea.eu.int/EMEPCORINAIR4/en.)

Hong, W. L., and T .F. Yang (2007), Methane flux from accretionary prism

through mud volcano area in Taiwan: From present to the past, paper

presented at 9th International Conference on Gas Geochemistry, Natl.

Taiwan Univ., Taipei, Taiwan.

Hornafius, J. S., D. Quigley, and B. P. Luyendyk (1999), The world’s most

spectacular marine hydrocarbon seeps (Coal Oil Point, Santa Barbara

Channel, California): Quantification of emissions, J. Geophys. Res.,

104, 20703– 20711.

Houweling, S., F. Dentener, and J. Lelieveld (2000), Simulation of preindustrial

methane to constrain the global source strength of natural wetlands,

J. Geophys. Res., 105, 17243–17255.

Judd, A. G. (2004), Natural seabed seeps as sources of atmospheric

methane, Environ. Geol., 46, 988– 996.

Klusman, R. W., M. E. Jakel, and M. P. LeRoy (1998), Does microseepage

of methane and light hydrocarbons contribute to the atmospheric budget

of methane and to global climate change?, Assoc. Pet. Geochem. Explor.

Bull., 11, 1– 55.

Kvenvolden, K. A., and B. W. Rogers (2005), Gaia’s breath—Global

methane exhalations, Mar. Pet. Geol., 22, 579– 590.

Kvenvolden, K. A., T. D. Lorenson, and W. Reeburgh (2001), Attention

turns to naturally occurring methane seepage, Eos Trans. AGU, 82, 457,

2001.

Lacroix, A. V. (1993), Unaccounted-for sources of fossil and isotopically

enriched methane and their contribution to the emissions inventory:

A review and synthesis, Chemosphere, 26, 507– 557.

Lassey, K. R., D. C. Lowe, and A. M. Smith (2007), The atmospheric

cycling of radiomethane and the ‘‘fossil fraction’’ of the methane source,

Atmos. Chem. Phys., 7, 2141– 2149.

Lelieveld, J., P. J. Crutzen, and F. J. Dentener (1998), Changing concentration,

lifetime and climate forcing of atmospheric methane, Tellus, Ser. B,

50, 128– 150.

Mellors, R., D. Kilb, A. Aliyev, A. Gasanov, and G. Yetirmishli (2007),

Correlations between earthquakes and large mud volcano eruptions,

J. Geophys. Res., 112, B04304, doi:10.1029/2006JB004489.

Milkov, A. V., R. Sassen, T. V. Apanasovich, and F. G. Dadashev (2003),

Global gas flux from mud volcanoes: A significant source of fossil

methane in the atmosphere and the ocean, Geophys. Res. Lett., 30(2),

1037, doi:10.1029/2002GL016358.

Mo¨rner, N.-A., and G. Etiope (2002), Carbon degassing from the lithosphere,

Global Planet. Change, 33, 185– 203.

Prather, M., et al. (2001) Atmospheric chemistry and greenhouse gases, in

Climate Change 2001: The Scientific Basis. Contribution of Working

Group I to the Third Assessment Report of the Intergovernmental Panel

on Climate Change, edited by J. T. Houghton et al., pp. 239–287, Cambridge

Univ. Press, Cambridge, U.K.

Quay, P., J. Stutsman, D. Wilbur, A. Snover, E. Dlugokencky, and T. Brown

(1999), The isotopic composition of atmospheric methane, Global Biogeochem.

Cycles, 13, 445– 461.

Ryan, S., E. J. Dlugokencky, P. P. Tans, and M. E. Trudeau (2006), Mauna

Loa volcano is not a methane source: Implications for Mars, Geophys.

Res. Lett., 33, L12301, doi:10.1029/2006GL026223.

Schimel, D., et al. (1996), Radiative forcing of climate change, in Climate

Change 1995: The Science of Climate Change, edited by J. T. Houghton

et al., pp. 65– 131, Cambridge Univ. Press, Cambridge, U.K.