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Potential methane reservoirs beneath Antarctica


Once thought to be devoid of life, the ice-covered parts of Antarctica are now known to be a reservoir of metabolically active microbial cells and organic carbon1. The potential for methanogenic archaea to support the degradation of organic carbon to methane beneath the ice, however, has not yet been evaluated. Large sedimentary basins containing marine sequences up to 14 kilometres thick2 and an estimated 21,000 petagrams (1 Pg equals 1015 g) of organic carbon are buried beneath the Antarctic Ice Sheet. No data exist for rates of methanogenesis in sub-Antarctic marine sediments. Here we present experimental data from other subglacial environments that demonstrate the potential for overridden organic matter beneath glacial systems to produce methane. We also numerically simulate the accumulation of methane in Antarctic sedimentary basins using an established one-dimensional hydrate model3 and show that pressure/temperature conditions favour methane hydrate formation down to sediment depths of about 300 metres in West Antarctica and 700 metres in East Antarctica. Our results demonstrate the potential for methane hydrate accumulation in Antarctic sedimentary basins, where the total inventory depends on rates of organic carbon degradation and conditions at the ice-sheet bed. We calculate that the sub-Antarctic hydrate inventory could be of the same order of magnitude as that of recent estimates made for Arctic permafrost. Our findings suggest that the Antarctic Ice Sheet may be a neglected but important component of the global methane budget, with the potential to act as a positive feedback on climate warming during ice-sheet wastage.

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Figure 1: Methane production in sub-Antarctic sediments.
Figure 2: Methane hydrate+gas accumulation potential beneath the ice sheet.
Figure 3: Vertical profiles of methane solubility, dissolved methane, methane hydrate and methane gas in zero flux simulations.
Figure 4: Modelled thermogenic methane accumulation beneath WAIS over 1 Myr of glaciation under the maximum flux scenario ( v = 0.1, TOC(0,0) = 1%).

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  1. Priscu, J. et al. in Polar Lakes and Rivers (eds Vincent, W. F. & Laybourn-Parry, J. ) 320 (Oxford University Press, 2009)

  2. Ferraccioli, F., Armadillo, E., Jordan, T., Bozzo, E. & Corr, H. Aeromagnetic exploration over the East Antarctic Ice Sheet: a new view of the Wilkes Subglacial Basin. Tectonophysics 478, 62–77 (2009)

    Article  ADS  Google Scholar 

  3. Davie, M. K. & Buffett, B. A. A numerical model for the formation of gas hydrate below the seafloor. J. Geophys. Res. 106, 497–514 (2001)

    Article  ADS  CAS  Google Scholar 

  4. Wellsbury, P., Mather, I. & Parkes, R. J. Geomicrobiology of deep, low organic carbon sediments in the Woodlark Basin, Pacific Ocean. FEMS Microbiol. Ecol. 42, 59–70 (2002)

    Article  CAS  Google Scholar 

  5. Cragg, B. A. et al. Bacterial populations and processes in sediments containing gas hydrates (ODP Leg 146: Cascadia Margin). Earth Planet. Sci. Lett. 139, 497–507 (1996)

    Article  ADS  CAS  Google Scholar 

  6. Colwell, F. S. et al. Estimates of biogenic methane production rates in deep marine sediments at Hydrate Ridge, Cascadia margin. Appl. Environ. Microb. 74, 3444–3452 (2008)

    Article  CAS  Google Scholar 

  7. Parkes, R. J. et al. Bacterial biomass and activity in deep sediment layers from the Peru margin. Phil. Trans. R. Soc. Lond. A 331, 139–153 (1990)

    Article  ADS  CAS  Google Scholar 

  8. Yoshioka, H., Sakata, S., Cragg, B. A., Parkes, R. J. & Fujii, T. Microbial methane production rates in gas hydrate-bearing sediments from the eastern Nankai Trough, off central Japan. Geochem. J. 43, 315–321 (2009)

    Article  ADS  CAS  Google Scholar 

  9. Kotsyurbenko, O. R. et al. Acetoclastic and hydrogenotrophic methane production and methanogenic populations in an acidic West-Siberian peat bog. Environ. Microbiol. 6, 1159–1173 (2004)

    Article  CAS  Google Scholar 

  10. Franzmann, P. D., Roberts, N. J., Mancuso, C. A., Burton, H. R. & McMeekin, T. A. Methane production in meromictic Ace Lake, Antarctica. Hydrobiologia 210, 191–201 (1991)

    Article  CAS  Google Scholar 

  11. Smith, R., Miller, L. & Howes, B. The geochemistry of methane in Lake Fryxell, an amictic, permanently ice-covered, antarctic lake. Biogeochemistry 21, 95–115 (1993)

    Article  CAS  Google Scholar 

  12. Ellis-Evans, J. C. Methane in maritime Antarctic freshwater lakes. Polar Biol. 3, 63–71 (1984)

    Article  CAS  Google Scholar 

  13. Archer, D. Methane hydrate stability and anthropogenic climate change. Biogeosciences 4, 521–544 (2007)

    Article  ADS  CAS  Google Scholar 

  14. Wadham, J. L., Tranter, M., Tulaczyk, S. & Sharp, M. Subglacial methanogenesis: a potential climatic amplifier? Glob. Biogeochem. Cycles 22, GB2021 (2008)

    Article  ADS  Google Scholar 

  15. Lanoil, B. et al. Bacteria beneath the West Antarctic Ice Sheet. Environ. Microbiol. 11, 609–615 (2009)

    Article  CAS  Google Scholar 

  16. Boyd, E. S., Skidmore, M., Mitchell, A. C., Bakermans, C. & Peters, J. W. Methanogenesis in subglacial sediments. Environ. Microbiol. Rep. 2, 685–692 (2010)

    Article  CAS  Google Scholar 

  17. Pattyn, F. Antarctic subglacial conditions inferred from a hybrid ice sheet/ice stream model. Earth Planet. Sci. Lett. 295, 451–461 (2010)

    Article  ADS  CAS  Google Scholar 

  18. Maule, C. F., Purucker, M. E., Olsen, N. & Mosegaard, K. Heat flux anomalies in Antarctica revealed by satellite magnetic data. Science 309, 464–467 (2005)

    Article  ADS  Google Scholar 

  19. Claypool, G. F., Lorensen, T. D. & Johnson, C. A. Authigenic carbonates, methane generation, and oxidation in continental rise and shelf sediments, ODP leg 188, sites 1165 and 1166, offshore Antarctica (Prydz Bay). Proc. ODP Sci. Results 188, 1–15 (2004)

    CAS  Google Scholar 

  20. Tarnocai, C. et al. Soil organic carbon pools in the northern circumpolar permafrost region. Glob. Biogeochem. Cycles 23, GB2023 (2009)

    Article  ADS  Google Scholar 

  21. Houghton, R. A. Balancing the global carbon budget. Annu. Rev. Earth Planet. Sci. 35, 313–347 (2007)

    Article  ADS  CAS  Google Scholar 

  22. Meyers, P. A. & Ishiwatari, R. Lacustrine organic geochemistry—an overview of indicators of organic matter sources and diagenesis in lake sediments. Org. Geochem. 20, 867–900 (1993)

    Article  CAS  Google Scholar 

  23. Boudreau, B. P. & Ruddick, B. R. On a reactive continuum representation of organic-matter diagenesis. Am. J. Sci. 291, 507–538 (1991)

    Article  ADS  CAS  Google Scholar 

  24. Reeburgh, W. S., Whalen, S. C. & Alperin, M. J. In Microbial Growth on C1 Compounds (eds Murrell, J. C. & Kelly, D. P. ) 1–14 (Intercept Ltd, 1993).

  25. Etiope, G. & Klusman, R. W. Geologic emissions of methane to the atmosphere. Chemosphere 49, 777–789 (2002)

    Article  ADS  CAS  Google Scholar 

  26. Torres, M. E. et al. Fluid and chemical fluxes in and out of sediments hosting methane hydrate deposits on Hydrate Ridge, OR. I: Hydrological provinces. Earth Planet. Sci. Lett. 201, 525–540 (2002)

    Article  ADS  CAS  Google Scholar 

  27. Wallmann, K., Drews, M., Aloisi, G. & Bohrmann, G. Methane discharge into the Black Sea and the global ocean via fluid flow through submarine mud volcanoes. Earth Planet. Sci. Lett. 248, 545–560 (2006)

    Article  ADS  CAS  Google Scholar 

  28. Boswell, R. & Collett, T. S. Current perspectives on gas hydrate resources. Energy Environ. Sci. 4, 1206–1215 (2011)

    Article  CAS  Google Scholar 

  29. Pollard, D. & DeConto, R. M. Modelling West Antarctic ice sheet growth and collapse through the past five million years. Nature 458, 329–332 (2009)

    Article  ADS  CAS  Google Scholar 

  30. Dyke, A. S., Prest, V. K. & Narraway, J. D. in Map/Geological Survey of Canada 1702A (Geological Survey of Canada, 1987)

    Google Scholar 

  31. Dickens, G. R., Paull, C. K. & Wallace, P. Direct measurement of in situ methane quantities in a large gas-hydrate reservoir. Nature 385, 426–428 (1997)

    Article  ADS  CAS  Google Scholar 

  32. Barker, P. F., Camerlenghi, A. & Acton, G. D. Leg 178 Summary. Proc ODP Init. Rep. 178, 60 (1999)

    Google Scholar 

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This research was funded by the Natural Environment Research Council (UK—NERC grant NE/E004016/1) and the National Science Foundation WISSARD project (NSF-AISS 0839142). Support to J.L.W. was also provided by the Leverhulme Trust via a Phillip Leverhulme award and to S.A. by the Netherlands Organisation for Scientific Research (NWO). We acknowledge NSERC and Antarctica New Zealand for financial and logistic support for sampling in Antarctica and the Polar Continental Shelf Project for financial and logistic support for sampling in Arctic Canada. We thank S. Fitzsimons for assistance with sampling in Antarctica. A.D. was funded by an NSERC Undergraduate Student Research Award. This research used data provided by the Ocean Drilling Program. The Ocean Drilling Program is sponsored by the US National Science Foundation and participating countries under the management of the Joint Oceanographic Institutions, Inc. We thank C. Ruppel for comments on this manuscript.

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Authors and Affiliations



J.L.W. wrote the paper and directed the work, and led the sample collection in Greenland. S.A. did the numerical modelling and contributed to manuscript preparation. S.T. assisted with the modelling and contributed to manuscript preparation. M.S. contributed to the writing of the manuscript and did experimental work. J.T. did the initial design of incubation experiments, laboratory analysis of incubation experiments, and sample collection. G.P.L. performed laboratory analysis of the incubation experiments, and did sample collection. E.L. performed laboratory analysis of incubation experiments. A.D. performed laboratory analysis of the incubation experiments. M.T. assisted with the manuscript and modelling calculations. M.J.S. added input to the incubation experiments, and did sample collection of Antarctic subglacial material. A.M.A. assisted with writing the manuscript and advised upon incubation experiments. A.R. assisted with manuscript preparation and numerical modelling. C.B. assisted with the laboratory analysis of the incubation experiments.

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Correspondence to J. L. Wadham.

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Wadham, J., Arndt, S., Tulaczyk, S. et al. Potential methane reservoirs beneath Antarctica. Nature 488, 633–637 (2012).

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