SULFATE-DEPENDENT ANAEROBIC OXIDATION OF METHANE AS GENERATION MECHANISM FOR CALCITE CAP ROCK OF GULF COAST SALT DOMES

2016 ◽  
Author(s):  
Kylie H. Caesar ◽  
Keyword(s):  
Gulf Coast ◽  
Generation Mechanism ◽  
Anaerobic Oxidation Of Methane ◽  
Anaerobic Oxidation ◽  
Salt Domes ◽  
Oxidation Of Methane ◽  
Cap Rock

Simultaneous nitrate and sulfate dependent anaerobic oxidation of methane linking carbon, nitrogen and sulfur cycles

2021 ◽  
Vol 194 ◽  
pp. 116928
Author(s):  
Wen-Bo Nie ◽  
Jie Ding ◽  
Guo-Jun Xie ◽  
Xin Tan ◽  
Yang Lu ◽  
...  
Keyword(s):  
Anaerobic Oxidation Of Methane ◽  
Anaerobic Oxidation ◽  
Oxidation Of Methane

scholarly journals Can anaerobic oxidation of methane prevent seafloor gas escape in a warming climate?

Solid Earth ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 1541-1554 ◽  
Author(s):  
Christian Stranne ◽  
Matt O'Regan ◽  
Martin Jakobsson ◽  
Volker Brüchert ◽  
Marcelo Ketzer
Keyword(s):  
Climate Warming ◽  
Future Climate ◽  
Hydraulic Fractures ◽  
Anaerobic Oxidation Of Methane ◽  
Anaerobic Oxidation ◽  
Warming Scenario ◽  
Oxidation Of Methane ◽  
Warming Climate ◽  
Continental Slopes ◽  
Fully Coupled

Abstract. Assessments of future climate-warming-induced seafloor methane (CH4) release rarely include anaerobic oxidation of methane (AOM) within the sediments. Considering that more than 90 % of the CH4 produced in ocean sediments today is consumed by AOM, this may result in substantial overestimations of future seafloor CH4 release. Here, we integrate a fully coupled AOM module with a numerical hydrate model to investigate under what conditions rapid release of CH4 can bypass AOM and result in significant fluxes to the ocean and atmosphere. We run a number of different model simulations for different permeabilities and maximum AOM rates. In all simulations, a future climate warming scenario is simulated by imposing a linear seafloor temperature increase of 3 ∘C over the first 100 years. The results presented in this study should be seen as a first step towards understanding AOM dynamics in relation to climate change and hydrate dissociation. Although the model is somewhat poorly constrained, our results indicate that vertical CH4 migration through hydraulic fractures can result in low AOM efficiencies. Fracture flow is the predicted mode of methane transport under warming-induced dissociation of hydrates on upper continental slopes. Therefore, in a future climate warming scenario, AOM might not significantly reduce methane release from marine sediments.

scholarly journals Effects of Temperature and Pressure on Sulfate Reduction and Anaerobic Oxidation of Methane in Hydrothermal Sediments of Guaymas Basin

2004 ◽  
Vol 70 (2) ◽  
pp. 1231-1233 ◽  
Author(s):  
Jens Kallmeyer ◽  
Antje Boetius
Keyword(s):  
Sulfate Reduction ◽  
Deep Sea ◽  
Anaerobic Oxidation Of Methane ◽  
Anaerobic Oxidation ◽  
Guaymas Basin ◽  
Oxidation Of Methane ◽  
Hydrothermal Sediments ◽  
Deep Sea Sediments ◽  
Effects Of Temperature ◽  
Temperature And Pressure

ABSTRACT Rates of sulfate reduction (SR) and anaerobic oxidation of methane (AOM) in hydrothermal deep-sea sediments from Guaymas Basin were measured at temperatures of 5 to 200°C and pressures of 1 × 105, 2.2 × 107, and 4.5 × 107 Pa. A maximum SR of several micromoles per cubic centimeter per day was found at between 60 and 95°C and 2.2 × 107 and 4.5 × 107 Pa. Maximal AOM was observed at 35 to 90°C but generally accounted for less than 5% of SR.

Cr(VI) reduction coupled with anaerobic oxidation of methane in a laboratory reactor

2016 ◽  
Vol 102 ◽  
pp. 445-452 ◽  
Author(s):  
Yong-Ze Lu ◽  
Liang Fu ◽  
Jing Ding ◽  
Zhao-Wei Ding ◽  
Na Li ◽  
...  
Keyword(s):  
Anaerobic Oxidation Of Methane ◽  
Anaerobic Oxidation ◽  
Oxidation Of Methane ◽  
Laboratory Reactor

scholarly journals Anaerobic oxidation of methane associated with sulfate reduction in a natural freshwater gas source

2015 ◽  
Vol 10 (6) ◽  
pp. 1400-1412 ◽  
Author(s):  
Peer HA Timmers ◽  
Diego A Suarez-Zuluaga ◽  
Minke van Rossem ◽  
Martijn Diender ◽  
Alfons JM Stams ◽  
...  
Keyword(s):  
Sulfate Reduction ◽  
Anaerobic Oxidation Of Methane ◽  
Anaerobic Oxidation ◽  
Oxidation Of Methane ◽  
Gas Source

Assimilation of methane and inorganic carbon by microbial communities mediating the anaerobic oxidation of methane

2008 ◽  
Vol 10 (9) ◽  
pp. 2287-2298 ◽  
Author(s):  
Gunter Wegener ◽  
Helge Niemann ◽  
Marcus Elvert ◽  
Kai-Uwe Hinrichs ◽  
Antje Boetius
Keyword(s):  
Microbial Communities ◽  
Inorganic Carbon ◽  
Anaerobic Oxidation Of Methane ◽  
Anaerobic Oxidation ◽  
Oxidation Of Methane
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