Articles | Volume 10, issue 5
https://doi.org/10.5194/se-10-1541-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-10-1541-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
16 Sep 2019
Research article |
| 16 Sep 2019
| 16 Sep 2019
Can anaerobic oxidation of methane prevent seafloor gas escape in a warming climate?
Christian Stranne
CORRESPONDING AUTHOR
Department of Geological Sciences, Stockholm University, 106 91
Stockholm, Sweden
Bolin Centre for Climate Research, Stockholm University, 106
91 Stockholm, Sweden
Matt O'Regan
Department of Geological Sciences, Stockholm University, 106 91
Stockholm, Sweden
Bolin Centre for Climate Research, Stockholm University, 106
91 Stockholm, Sweden
Martin Jakobsson
Department of Geological Sciences, Stockholm University, 106 91
Stockholm, Sweden
Bolin Centre for Climate Research, Stockholm University, 106
91 Stockholm, Sweden
Volker Brüchert
Department of Geological Sciences, Stockholm University, 106 91
Stockholm, Sweden
Bolin Centre for Climate Research, Stockholm University, 106
91 Stockholm, Sweden
Marcelo Ketzer
Department of biology and environmental science, Linnaeus University,
391 82 Kalmar, Sweden
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Methane (CH4) cycling in the Baltic Proper is studied through model simulations, enabling a first estimate of key CH4 fluxes. A preliminary budget identifies benthic CH4 release as the dominant source and two main sinks: CH4 oxidation in the water (92 % of sinks) and outgassing to the atmosphere (8 % of sinks). This study addresses CH4 emissions from coastal seas and is a first step toward understanding the relative importance of open-water outgassing compared with local coastal hotspots.
Allison P. Lepp, Lauren E. Miller, John B. Anderson, Matt O'Regan, Monica C. M. Winsborrow, James A. Smith, Claus-Dieter Hillenbrand, Julia S. Wellner, Lindsay O. Prothro, and Evgeny A. Podolskiy
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The Greenland ice sheet is highly sensitive to global warming and a major contributor to sea level rise. In Northeast Greenland, ice–ocean–tectonic interactions are readily observable today, but geological records that illuminate long-term trends are lacking. NorthGreen aims to promote scientific drilling proposals to resolve key scientific questions on past changes in the Northeast Greenland margin that further affected the broader Earth system.
John Prytherch, Sonja Murto, Ian Brown, Adam Ulfsbo, Brett F. Thornton, Volker Brüchert, Michael Tjernström, Anna Lunde Hermansson, Amanda T. Nylund, and Lina A. Holthusen
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We directly measured methane and carbon dioxide exchange between ocean or sea ice and the atmosphere during an icebreaker-based expedition to the central Arctic Ocean (CAO) in summer 2021. These measurements can help constrain climate models and carbon budgets. The methane measurements, the first such made in the CAO, are lower than previous estimates and imply that the CAO is an insignificant contributor to Arctic methane emission. Gas exchange rates are slower than previous estimates.
Julia Muchowski, Martin Jakobsson, Lars Umlauf, Lars Arneborg, Bo Gustafsson, Peter Holtermann, Christoph Humborg, and Christian Stranne
Ocean Sci., 19, 1809–1825, https://doi.org/10.5194/os-19-1809-2023, https://doi.org/10.5194/os-19-1809-2023, 2023
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We show observational data of highly increased mixing and vertical salt flux rates in a sparsely sampled region of the northern Baltic Sea. Co-located acoustic observations complement our in situ measurements and visualize turbulent mixing with high spatial resolution. The observed mixing is generally not resolved in numerical models of the area but likely impacts the exchange of water between the adjacent basins as well as nutrient and oxygen conditions in the Bothnian Sea.
Johan Nilsson, Eef van Dongen, Martin Jakobsson, Matt O'Regan, and Christian Stranne
The Cryosphere, 17, 2455–2476, https://doi.org/10.5194/tc-17-2455-2023, https://doi.org/10.5194/tc-17-2455-2023, 2023
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We investigate how topographical sills suppress basal glacier melt in Greenlandic fjords. The basal melt drives an exchange flow over the sill, but there is an upper flow limit set by the Atlantic Water features outside the fjord. If this limit is reached, the flow enters a new regime where the melt is suppressed and its sensitivity to the Atlantic Water temperature is reduced.
Gabriel West, Darrell S. Kaufman, Martin Jakobsson, and Matt O'Regan
Geochronology, 5, 285–299, https://doi.org/10.5194/gchron-5-285-2023, https://doi.org/10.5194/gchron-5-285-2023, 2023
Short summary
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We report aspartic and glutamic acid racemization analyses on Neogloboquadrina pachyderma and Cibicidoides wuellerstorfi from the Arctic Ocean (AO). The rates of racemization in the species are compared. Calibrating the rate of racemization in C. wuellerstorfi for the past 400 ka allows the estimation of sample ages from the central AO. Estimated ages are older than existing age assignments (as previously observed for N. pachyderma), confirming that differences are not due to taxonomic effects.
Jesse R. Farmer, Katherine J. Keller, Robert K. Poirier, Gary S. Dwyer, Morgan F. Schaller, Helen K. Coxall, Matt O'Regan, and Thomas M. Cronin
Clim. Past, 19, 555–578, https://doi.org/10.5194/cp-19-555-2023, https://doi.org/10.5194/cp-19-555-2023, 2023
Short summary
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Oxygen isotopes are used to date marine sediments via similar large-scale ocean patterns over glacial cycles. However, the Arctic Ocean exhibits a different isotope pattern, creating uncertainty in the timing of past Arctic climate change. We find that the Arctic Ocean experienced large local oxygen isotope changes over glacial cycles. We attribute this to a breakdown of stratification during ice ages that allowed for a unique low isotope value to characterize the ice age Arctic Ocean.
Raisa Alatarvas, Matt O'Regan, and Kari Strand
Clim. Past, 18, 1867–1881, https://doi.org/10.5194/cp-18-1867-2022, https://doi.org/10.5194/cp-18-1867-2022, 2022
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This research contributes to efforts solving research questions related to the history of ice sheet decay in the Northern Hemisphere. The East Siberian continental margin sediments provide ideal material for identifying the mineralogical signature of ice sheet derived material. Heavy mineral analysis from marine glacial sediments from the De Long Trough and Lomonosov Ridge was used in interpreting the activity of the East Siberian Ice Sheet in the Arctic region.
Jaclyn Clement Kinney, Karen M. Assmann, Wieslaw Maslowski, Göran Björk, Martin Jakobsson, Sara Jutterström, Younjoo J. Lee, Robert Osinski, Igor Semiletov, Adam Ulfsbo, Irene Wåhlström, and Leif G. Anderson
Ocean Sci., 18, 29–49, https://doi.org/10.5194/os-18-29-2022, https://doi.org/10.5194/os-18-29-2022, 2022
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We use data crossing Herald Canyon in the Chukchi Sea collected in 2008 and 2014 together with numerical modelling to investigate the circulation in the western Chukchi Sea. A large fraction of water from the Chukchi Sea enters the East Siberian Sea south of Wrangel Island and circulates in an anticyclonic direction around the island. To assess the differences between years, we use numerical modelling results, which show that high-frequency variability dominates the flow in Herald Canyon.
Henrieka Detlef, Brendan Reilly, Anne Jennings, Mads Mørk Jensen, Matt O'Regan, Marianne Glasius, Jesper Olsen, Martin Jakobsson, and Christof Pearce
The Cryosphere, 15, 4357–4380, https://doi.org/10.5194/tc-15-4357-2021, https://doi.org/10.5194/tc-15-4357-2021, 2021
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Here we examine the Nares Strait sea ice dynamics over the last 7000 years and their implications for the late Holocene readvance of the floating part of Petermann Glacier. We propose that the historically observed sea ice dynamics are a relatively recent feature, while most of the mid-Holocene was marked by variable sea ice conditions in Nares Strait. Nonetheless, major advances of the Petermann ice tongue were preceded by a shift towards harsher sea ice conditions in Nares Strait.
Matt O'Regan, Thomas M. Cronin, Brendan Reilly, Aage Kristian Olsen Alstrup, Laura Gemery, Anna Golub, Larry A. Mayer, Mathieu Morlighem, Matthias Moros, Ole L. Munk, Johan Nilsson, Christof Pearce, Henrieka Detlef, Christian Stranne, Flor Vermassen, Gabriel West, and Martin Jakobsson
The Cryosphere, 15, 4073–4097, https://doi.org/10.5194/tc-15-4073-2021, https://doi.org/10.5194/tc-15-4073-2021, 2021
Short summary
Short summary
Ryder Glacier is a marine-terminating glacier in north Greenland discharging ice into the Lincoln Sea. Here we use marine sediment cores to reconstruct its retreat and advance behavior through the Holocene. We show that while Sherard Osborn Fjord has a physiography conducive to glacier and ice tongue stability, Ryder still retreated more than 40 km inland from its current position by the Middle Holocene. This highlights the sensitivity of north Greenland's marine glaciers to climate change.
Cited articles
Archer, D., Buffett, B., and Brovkin, V.: Ocean methane hydrates as a slow
tipping point in the global carbon cycle, P. Natl. Acad. Sci. USA, 106, 20596–20601,
https://doi.org/10.1073/pnas.0800885105, 2009.
Barnes, R. O. and Goldberg, E. D.: Methane production and consumption in
anoxic marine sediments, Geology, 4, 297–300,
https://doi.org/10.1130/0091-7613(1976)4<297:MPACIA>2.0.CO;2, 1976.
Berndt, C., Feseker, T., Treude, T., Krastel, S., Liebetrau, V., Niemann,
H., Bertics, V. J., Dumke, I., Dünnbier, K., Ferré, B., Graves, C.,
Gross, F., Hissmann, K., Hühnerbach, V., Krause, S., Lieser, K.,
Schauer, J., and Steinle, L.: Temporal Constraints on Hydrate-Controlled
Methane Seepage off Svalbard, Science, 343, 284–287,
https://doi.org/10.1126/science.1246298, 2014.
Bhatnagar, G., Chatterjee, S., Chapman, W. G., Dugan, B., Dickens, G. R., and
Hirasaki, G. J.: Analytical theory relating the depth of the sulfate-methane
transition to gas hydrate distribution and saturation, Geochem. Geophy.
Geosy., 12, Q03003, https://doi.org/10.1029/2010GC003397, 2011.
Biastoch, A., Treude, T., Rüpke, L. H., Riebesell, U., Roth, C.,
Burwicz, E. B., Park, W., Latif, M., Böning, C. W., Madec, G., and
Wallmann, K.: Rising Arctic Ocean temperatures cause gas hydrate
destabilization and ocean acidification, Geophys. Res. Lett., 38, L08602,
https://doi.org/10.1029/2011GL047222, 2011.
Boetius, A. and Wenzhöfer, F.: Seafloor oxygen consumption fuelled by
methane from cold seeps, Nat. Geosci., 6, 725, https://doi.org/10.1038/ngeo1926,
2013.
Boetius, A., Ravenschlag, K., Schubert, C. J., Rickert, D., Widdel, F.,
Gieseke, A., Amann, R., Jørgensen, B. B., Witte, U., and Pfannkuche, O.: A
marine microbial consortium apparently mediating anaerobic oxidation of
methane, Nature, 407, 623–626, https://doi.org/10.1038/35036572, 2000.
Borowski, W. S., Paull, C. K., and Ussler, W.: Marine pore-water sulfate
profiles indicate in situ methane flux from underlying gas hydrate, Geology,
24, 655–658, https://doi.org/10.1130/0091-7613(1996)024<0655:MPWSPI>2.3.CO;2, 1996.
Boswell, R. and Collett, S. T.: Current perspectives on gas hydrate
resources, Energ. Environ. Sci., 4, 1206–1215,
https://doi.org/10.1039/C0EE00203H, 2011.
Buffett, B. and Archer, D.: Global inventory of methane clathrate:
sensitivity to changes in the deep ocean, Earth Planet. Sc.
Lett., 227, 185–199, https://doi.org/10.1016/j.epsl.2004.09.005, 2004.
Dale, A. W., Sommer, S., Haeckel, M., Wallmann, K., Linke, P., Wegener, G.,
and Pfannkuche, O.: Pathways and regulation of carbon, sulfur and energy
transfer in marine sediments overlying methane gas hydrates on the Opouawe
Bank (New Zealand), Geochim. Cosmochim. Ac., 74, 5763–5784,
https://doi.org/10.1016/j.gca.2010.06.038, 2010.
Darnell, K. N. and Flemings, P. B.: Transient seafloor venting on
continental slopes from warming-induced methane hydrate dissociation:
TRANSIENT SEAFLOOR VENTING FROM HYDRATES, Geophys. Res. Lett.,
42, 10765–10772, https://doi.org/10.1002/2015GL067012, 2015.
Dickens, G. R.: Modeling the Global Carbon Cycle with a Gas Hydrate
Capacitor: Significance for the Latest Paleocene Thermal Maximum, in: Natural
Gas Hydrates: Occurrence, Distribution, and Detection, edited by: Paull, C. K. and Dillon, W. P., 19–38, American Geophysical Union, https://doi.org/10.1029/GM124p0019, 2001.
Dickens, G. R., O'Neil, J. R., Rea, D. K., and Owen, R. M.: Dissociation of oceanic methane
hydrate as a cause of the carbon isotope excursion at the end of the
Paleocene, Palaeogeogr. Palaeocl., 10, 965–971, https://doi.org/10.1029/95PA02087, 1995.
Egger, M., Riedinger, N., Mogollón, J. M., and Jørgensen, B. B.:
Global diffusive fluxes of methane in marine sediments, Nat. Geosci.,
11, 421–425, https://doi.org/10.1038/s41561-018-0122-8, 2018.
Freeze, R. A. and Cherry, J. A.: Groundwater, 604 pp., Prentice-Hall,
Englewood Cliffs, NJ, 1979.
Giambalvo, E. R., Fisher, A. T., Martin, J. T., Darty, L., and Lowell, R. P.:
Origin of elevated sediment permeability in a hydrothermal seepage zone,
eastern flank of the Juan de Fuca Ridge, and implications for transport of
fluid and heat, J. Geophys. Res.-Solid, 105,
913–928, https://doi.org/10.1029/1999JB900360, 2000.
Hinrichs, K.-U. and Boetius, A.: The Anaerobic Oxidation of Methane: New
Insights in Microbial Ecology and Biogeochemistry, in: Ocean Margin Systems,
edited by: Wefer, P. D. G., Billett, D. D., Hebbeln, D. D.,
Jørgensen, P. D. B. B., Schlüter, P. D. M., and van Weering, D. T. C. E.,
457–477, Springer Berlin Heidelberg,
https://doi.org/10.1007/978-3-662-05127-6_28
2002.
Hoehler, T. M. and Alperin, M. J.: Anaerobic methane oxidation by a
methanogen-sulfate reducer consortium: geochemical evidence and biochemical
considerations, in: Microbial Growth on C1 Compounds: Proceedings of the 8th
International Symposium on Microbial Growth on C1 Compounds, held in San
Diego, USA, 27 August–1 September 1995, edited by: Lidstrom, M. E. and
Tabita, F. R., 326–333, Springer Netherlands, Dordrecht, 1996.
Hunter, S. J., Goldobin, D. S., Haywood, A. M., Ridgwell, A., and Rees, J.
G.: Sensitivity of the global submarine hydrate inventory to scenarios of
future climate change, Earth Planet. Sc. Lett., 367, 105–115,
https://doi.org/10.1016/j.epsl.2013.02.017, 2013.
Kennett, J. P., Cannariato, K. G., Hendy, I. L., and Behl, R. J.:
Methane hydrates in quaternary climate change: the clathrate gun hypothesis, 54, 1–9, 2003.
Kirschke, S., Bousquet, P., Ciais, P., Saunois, M., Canadell, J. G.,
Dlugokencky, E. J., Bergamaschi, P., Bergmann, D., Blake, D. R., Bruhwiler,
L., Cameron-Smith, P., Castaldi, S., Chevallier, F., Feng, L., Fraser, A.,
Heimann, M., Hodson, E. L., Houweling, S., Josse, B., Fraser, P. J.,
Krummel, P. B., Lamarque, J.-F., Langenfelds, R. L., Quéré, C. L.,
Naik, V., O'Doherty, S., Palmer, P. I., Pison, I., Plummer, D., Poulter, B.,
Prinn, R. G., Rigby, M., Ringeval, B., Santini, M., Schmidt, M., Shindell,
D. T., Simpson, I. J., Spahni, R., Steele, L. P., Strode, S. A., Sudo, K.,
Szopa, S., Werf, G. R. van der, Voulgarakis, A., van Weele, M., Weiss, R.
F., Williams, J. E., and Zeng, G.: Three decades of global methane sources
and sinks, Nat. Geosci., 6, 813, https://doi.org/10.1038/ngeo1955, 2013.
Knittel, K. and Boetius, A.: Anaerobic Oxidation of Methane: Progress with
an Unknown Process, Annu. Rev. Microbiol., 63, 311–334,
https://doi.org/10.1146/annurev.micro.61.080706.093130, 2009.
Kretschmer, K., Biastoch, A., Rüpke, L., and Burwicz, E.: Modeling the
fate of methane hydrates under global warming, Global Biogeochem. Cy.,
29, 610–625, https://doi.org/10.1002/2014GB005011, 2015.
Luff, R. and Wallmann, K.: Fluid flow, methane fluxes, carbonate
precipitation and biogeochemical turnover in gas hydrate-bearing sediments
at Hydrate Ridge, Cascadia Margin: numerical modeling and mass balances,
Geochim. Cosmochim. Ac., 67, 3403–3421, 2003.
Malinverno, A. and Pohlman, J. W.: Modeling sulfate reduction in methane
hydrate-bearing continental margin sediments: Does a sulfate-methane
transition require anaerobic oxidation of methane?, Geochem. Geophy.
Geosy., 12, Q07006, https://doi.org/10.1029/2011GC003501, 2011.
Martens, C. S. and Berner, R. A.: Interstitial water chemistry of anoxic
Long Island Sound sediments. 1. Dissolved gases1, Limnol. Oceanogr., 22,
10–25, https://doi.org/10.4319/lo.1977.22.1.0010, 1977.
Martens, C. S. and Val Klump, J.: Biogeochemical cycling in an organic-rich
coastal marine basin – I. Methane sediment-water exchange processes,
Geochim. Cosmochim. Ac., 44, 471–490,
https://doi.org/10.1016/0016-7037(80)90045-9, 1980.
Mau, S., Valentine, D. L., Clark, J. F., Reed, J., Camilli, R., and Washburn,
L.: Dissolved methane distributions and air-sea flux in the plume of a
massive seep field, Coal Oil Point, California, Geophys. Res. Lett., 34,
L22603, https://doi.org/10.1029/2007GL031344, 2007.
McGinnis, D. F., Greinert, J., Artemov, Y., Beaubien, S. E., and Wüest,
A.: Fate of rising methane bubbles in stratified waters: How much methane
reaches the atmosphere?, J. Geophys. Res., 111, C09007,
https://doi.org/10.1029/2005JC003183, 2006.
Michaelis, W., Seifert, R., Nauhaus, K., Treude, T., Thiel, V., Blumenberg,
M., Knittel, K., Gieseke, A., Peterknecht, K., Pape, T., Boetius, A., Amann,
R., Jørgensen, B. B., Widdel, F., Peckmann, J., Pimenov, N. V., and Gulin,
M. B.: Microbial Reefs in the Black Sea Fueled by Anaerobic Oxidation of
Methane, Science, 297, 1013–1015, https://doi.org/10.1126/science.1072502, 2002.
Milkov, A. V.: Global estimates of hydrate-bound gas in marine sediments:
how much is really out there?, Earth-Sci. Rev., 66, 183–197,
https://doi.org/10.1016/j.earscirev.2003.11.002, 2004.
Miller, D. J., Ketzer, J. M., Viana, A. R., Kowsmann, R. O., Freire, A. F.
M., Oreiro, S. G., Augustin, A. H., Lourega, R. V., Rodrigues, L. F.,
Heemann, R., Preissler, A. G., Machado, C. X., and Sbrissa, G. F.: Natural
gas hydrates in the Rio Grande Cone (Brazil): A new province in the western
South Atlantic, Mar. Petrol. Geol., 67, 187–196,
https://doi.org/10.1016/j.marpetgeo.2015.05.012, 2015.
Moridis, G. J.: TOUGH+HYDRATE v1.2 User's Manual: A Code for the
Simulation of System Behavior in Hydrate-Bearing Geologic Media,
eScholarship, available at:
http://escholarship.org/uc/item/3mk82656 (last access: 25 March 2015), 2014.
Nakajima, T., Kakuwa, Y., Yasudomi, Y., Itaki, T., Motoyama, I., Tomiyama,
T., Machiyama, H., Katayama, H., Okitsu, O., Morita, S., Tanahashi, M., and
Matsumoto, R.: Formation of pockmarks and submarine canyons associated with
dissociation of gas hydrates on the Joetsu Knoll, eastern margin of the Sea
of Japan, J. Asian Earth Sci., 90, 228–242,
https://doi.org/10.1016/j.jseaes.2013.10.011, 2014.
Nauhaus, K., Albrecht, M., Elvert, M., Boetius, A., and Widdel, F.: In vitro
cell growth of marine archaeal-bacterial consortia during anaerobic
oxidation of methane with sulfate, Environ. Microbiol., 9,
187–196, https://doi.org/10.1111/j.1462-2920.2006.01127.x, 2007.
Neuzil, C. E.: How permeable are clays and shales?, Water Resour.
Res., 30, 145–150, https://doi.org/10.1029/93WR02930, 1994.
Niemann, H., Lösekann, T., de Beer, D., Elvert, M., Nadalig, T.,
Knittel, K., Amann, R., Sauter, E. J., Schlüter, M., Klages, M.,
Foucher, J. P., and Boetius, A.: Novel microbial communities of the Haakon
Mosby mud volcano and their role as a methane sink, Nature, 443,
854–858, https://doi.org/10.1038/nature05227, 2006.
Reagan, M. T. and Moridis, G. J.: Dynamic response of oceanic hydrate
deposits to ocean temperature change, J. Geophys. Res., 113, C12023,
https://doi.org/10.1029/2008JC004938, 2008.
Reagan, M. T., Moridis, G. J., Elliott, S. M., and Maltrud, M.: Contribution
of oceanic gas hydrate dissociation to the formation of Arctic Ocean methane
plumes, J. Geophys. Res., 116, C09014, https://doi.org/10.1029/2011JC007189, 2011.
Reeburgh, W. S.: Oceanic Methane Biogeochemistry, Chem. Rev., 107,
486–513, https://doi.org/10.1021/cr050362v, 2007.
Rodrigues, L. F., Ketzer, J. M., Lourega, R. V., Augustin, A. H., Sbrissa,
G., Miller, D., Heemann, R., Viana, A., Freire, A. F. M., Morad, S.,
Rodrigues, L. F., Ketzer, J. M., Lourega, R. V., Augustin, A. H., Sbrissa,
G., Miller, D., Heemann, R., Viana, A., Freire, A. F. M., and Morad, S.: The
influence of methane fluxes on the sulfate/methane interface in sediments
from the Rio Grande Cone Gas Hydrate Province, southern Brazil, Brazilian
J. Geology, 47, 369–381, https://doi.org/10.1590/2317-4889201720170027,
2017.
Roussel, E. G., Cragg, B. A., Webster, G., Sass, H., Tang, X., Williams, A.
S., Gorra, R., Weightman, A. J., and Parkes, R. J.: Complex coupled metabolic
and prokaryotic community responses to increasing temperatures in anaerobic
marine sediments: critical temperatures and substrate changes, FEMS
Microbiol. Ecol., 91, fiv084, https://doi.org/10.1093/femsec/fiv084, 2015.
Ruppel, C. D.: Methane Hydrates and Contemporary Climate Change, Nature Education Knowledge, 3, 29, 2011.
Ruppel, C. D. and Kessler, J. D.: The interaction of climate change and
methane hydrates, Rev. Geophys., 55, 2016RG000534,
https://doi.org/10.1002/2016RG000534, 2017.
Saffer, D. M.: The permeability of active subduction plate boundary faults,
Geofluids, 15, 193–215, https://doi.org/10.1111/gfl.12103, 2015.
Sivan, O., Schrag, D. P., and Murray, R. W.: Rates of methanogenesis and
methanotrophy in deep-sea sediments, Geobiology, 5, 141–151,
https://doi.org/10.1111/j.1472-4669.2007.00098.x, 2007.
Spinelli, G. A., Giambalvo, E. R., and Fisher, A. T.: Sediment permeability,
distribution, and influence on fluxes in oceanic basement, Hydrogeology of
the Oceanic Lithosphere, 1, 151–188, 2004.
Stocker, T. F., Qin, D., Plattner, G. K., Tignor, M., Allen, S. K.,
Boschung, J., Nauels, A., Xia, Y., Bex, B., and Midgley, B. M.: IPCC, 2013:
climate change 2013: the physical science basis. Contribution of working
group I to the fifth assessment report of the intergovernmental panel on
climate change, Cambridge Univ. Press, Cambridge, UK, 2013.
Stranne, C., O'Regan, M., Dickens, G. R., Crill, P., Miller, C., Preto, P.,
and Jakobsson, M.: Dynamic simulations of potential methane release from
East Siberian continental slope sediments, Geochem. Geophy. Geosy.,
17, 872–886, https://doi.org/10.1002/2015GC006119, 2016a.
Stranne, C., O'Regan, M., and Jakobsson, M.: Overestimating climate
warming-induced methane gas escape from the seafloor by neglecting
multiphase flow dynamics, Geophys. Res. Lett., 43, 2016GL070049,
https://doi.org/10.1002/2016GL070049, 2016b.
Stranne, C., O'Regan, M., and Jakobsson, M.: Modeling fracture propagation
and seafloor gas release during seafloor warming-induced hydrate
dissociation, Geophys. Res. Lett., 44, 2017GL074349,
https://doi.org/10.1002/2017GL074349, 2017.
Suess, E.: Marine cold seeps, in: Handbook of Hydrocarbon and Lipid Microbiology, edited by: Timmis, K. N., McGenity, T. J., Meer, J. R., and Lorenzo, V., Springer, Berlin Heidelberg,
187–203, 2010.
Thatcher, K. E., Westbrook, G. K., Sarkar, S., and Minshull, T. A.: Methane
release from warming-induced hydrate dissociation in the West Svalbard
continental margin: Timing, rates, and geological controls, J. Geophys. Res.-Solid, 118, 22–38, https://doi.org/10.1029/2012JB009605, 2013.
Treude, T., Boetius, A., Knittel, K., Wallmann, K., and Jørgensen, B. B.:
Anaerobic oxidation of methane above gas hydrates at Hydrate Ridge, NE
Pacific Ocean, Mar. Ecol.-Prog. Ser., 264, 1–14, 2003.
Valentine, D. L.: Emerging topics in marine methane biogeochemistry, Annu. Rev. Mar. Sci., 3, 147–171, 2011.
Wallmann, K., Pinero, E., Burwicz, E., Haeckel, M., Hensen, C., Dale, A., and
Ruepke, L.: The Global Inventory of Methane Hydrate in Marine Sediments: A
Theoretical Approach, Energies, 5, 2449–2498, https://doi.org/10.3390/en5072449,
2012.
Wallmann, K., Riedel, M., Hong, W. L., Patton, H., Hubbard, A., Pape, T.,
Hsu, C. W., Schmidt, C., Johnson, J. E., Torres, M. E., Andreassen, K.,
Berndt, C., and Bohrmann, G.: Gas hydrate dissociation off Svalbard induced
by isostatic rebound rather than global warming, Nat. Commun.,
9, 83, https://doi.org/10.1038/s41467-017-02550-9, 2018.
