skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Variations in Gas and Water Pulses at an Arctic Seep: Fluid Sources and Methane Transport

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1029/2018gl077309· OSTI ID:1539738
ORCiD logo [1]; ORCiD logo [2];  [3];  [4]; ORCiD logo [2];  [5]
  1. Geological Survey of Norway, Trondheim (Norway); Arctic Univ. of Norway (UiT), Tromsø (Norway)
  2. Oregon State Univ., Corvallis, OR (United States)
  3. Arctic Univ. of Norway (UiT), Tromsø (Norway); The Ohio State Univ., Columbus, OH (United States)
  4. Arctic Univ. of Norway (UiT), Tromsø (Norway)
  5. Geological Survey of Norway, Trondheim (Norway)

Abstract Methane fluxes into the oceans are largely dependent on the methane phase as it migrates upward through the sediments. Here we document decoupled methane transport by gaseous and aqueous phases in Storfjordrenna (offshore Svalbard) and propose a three‐stage evolution model for active seepage in the region where gas hydrates are present in the shallow subsurface. In a preactive seepage stage, solute diffusion is the primary transport mechanism for methane in the dissolved phase. Fluids containing dissolved methane have high 87 Sr/ 86 Sr ratios due to silicate weathering in the microbial methanogenesis zone. During the active seepage stage, migration of gaseous methane results in near‐seafloor gas hydrate formation and vigorous seafloor gas discharge with a thermogenic fingerprint. In the postactive seepage stage, the high concentration of dissolved lithium points to the contribution of a deeper‐sourced aqueous fluid, which we postulate advects upward following cessation of gas discharge.

Research Organization:
Oregon State Univ., Corvallis, OR (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE)
Grant/Contract Number:
FE0013531; DE‐FE0013531
OSTI ID:
1539738
Alternate ID(s):
OSTI ID: 1436189
Journal Information:
Geophysical Research Letters, Vol. 45, Issue 9; ISSN 0094-8276
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 27 works
Citation information provided by
Web of Science

References (60)

Production, consumption, and migration of methane in accretionary prism of southwestern Taiwan journal August 2017
Fluid and chemical fluxes in and out of sediments hosting methane hydrate deposits on Hydrate Ridge, OR, I: Hydrological provinces journal August 2002
Methane seepage along the Hikurangi Margin, New Zealand: Overview of studies in 2006 and 2007 and new evidence from visual, bathymetric and hydroacoustic investigations journal July 2010
Characterization of benthic biogeochemistry and ecology at three methane seep sites on the Northern U.S. Atlantic margin journal April 2018
Hydroacoustic methodology for detection, localization, and quantification of gas bubbles rising from the seafloor at gas seeps from the eastern Black Sea: HYDROACOUSTIC GAS QUANTIFICATION journal October 2008
Quantitative analysis of anaerobic oxidation of methane (AOM) in marine sediments: A modeling perspective journal May 2011
Lithium, boron, and their isotopes in sediments and pore waters of Ocean Drilling Program Site 808, Nankai Trough: Implications for fluid expulsion in accretionary prisms journal January 1995
Passing gas through the hydrate stability zone at southern Hydrate Ridge, offshore Oregon journal January 2006
Studies of smectite membrane behavior: Temperature dependence, 20–180°C journal January 1986
An experimental study of alteration of oceanic crust and terrigenous sediments at moderate temperatures (51 to 350°C): insights as to chemical processes in near-shore ridge-flank hydrothermal systems journal February 2003
Watermass transformations in Storfjorden journal March 2005
Geological control and magnitude of methane ebullition from a high-flux seep area in the Black Sea—the Kerch seep area journal August 2012
Feeding methane vents and gas hydrate deposits at south Hydrate Ridge: FEEDING METHANE VENTS AND GAS HYDRATES journal December 2004
Late quaternary sedimentation and glacial history of the western Svalbard continental margin journal August 1996
Gas hydrate that breaches the sea floor on the continental slope of the Gulf of Mexico journal January 1994
Mass balance of dissolved lithium in the oceans journal April 1984
High-resolution P-Cable 3D seismic imaging of gas chimney structures in gas hydrated sediments of an Arctic sediment drift journal October 2010
The Barents Sea ice sheet - a sedimentological discussion journal October 1983
Faulting, fracturing, and seismicity as functions of glacio-isostasy in Fennoscandia journal January 1978
The margin between Senja and Spitsbergen fracture zones: Implications from plate tectonics journal October 1982
The Svalbard–Barents Sea ice-sheet – Historical, current and future perspectives journal March 2013
Widespread methane seepage along the continental margin off Svalbard - from Bjørnøya to Kongsfjorden journal February 2017
Marine silicate weathering in the anoxic sediment of the Ulleung Basin: Evidence and consequences: SILICATE WEATHERING IN THE ULLEUNG BASIN journal August 2016
Oceanic Methane Biogeochemistry journal February 2007
Methane discharge from a deep-sea submarine mud volcano into the upper water column by gas hydrate-coated methane bubbles journal March 2006
Offshore fresh groundwater reserves as a global phenomenon journal December 2013
Gas hydrate dissociation off Svalbard induced by isostatic rebound rather than global warming journal January 2018
Gas hydrate growth, methane transport, and chloride enrichment at the southern summit of Hydrate Ridge, Cascadia margin off Oregon journal September 2004
Methane discharge into the Black Sea and the global ocean via fluid flow through submarine mud volcanoes journal August 2006
Gas emissions at the continental margin west off Svalbard: mapping, sampling, and quantification journal January 2014
Opening of the Fram Strait gateway: A review of plate tectonic constraints journal April 2008
Fluid expulsion related to mud extrusion off Costa Rica—A window to the subducting slab journal January 2004
Gas hydrate distribution and carbon sequestration through coupled microbial methanogenesis and silicate weathering in the Krishna–Godavari Basin, offshore India journal December 2014
Authigenic carbonates from the Cascadia subduction zone and their relation to gas hydrate stability journal January 1998
Gaia's breath—global methane exhalations journal April 2005
Transient hydraulic fracturing and gas release in methane hydrate settings: A case study from southern Hydrate Ridge: HYDRAULIC FRACTURING AT HYDRATE RIDGE journal December 2011
Methane gas-phase dynamics in marine sediments: A model study journal March 2009
Lithium isotopic compositions of pore fluids and sediments in the Costa Rica subduction zone: implications for fluid processes and sediment contribution to the arc volcanoes journal November 2000
Long-lived fault zones and their influence on the tectonic development of the southwestern Barents Sea journal July 1984
Postglacial response of Arctic Ocean gas hydrates to climatic amelioration journal June 2017
The build-up, configuration, and dynamical sensitivity of the Eurasian ice-sheet complex to Late Weichselian climatic and oceanic forcing journal December 2016
Silicate weathering in anoxic marine sediments journal June 2008
Lithium: sources in pore fluids of Peru slope sediments and implications for oceanic fluxes journal December 1991
Silicate weathering in anoxic marine sediments journal February 2008
Variability in transport of terrigenous material on the shelves and the deep Arctic Ocean during the Holocene journal January 2015
Rising methane gas bubbles form massive hydrate layers at the seafloor journal November 2004
Crustal structure and transform margin development south of Svalbard based on ocean bottom seismometer data journal July 2003
Brine formation in relation to climate changes and ice retreat during the last 15,000 years in Storfjorden, Svalbard, 76-78°N journal October 2014
Methane Hydrate Formation in Ulleung Basin Under Conditions of Variable Salinity: Reduced Model and Experiments journal June 2016
Carbon geochemistry of cold seeps: Methane fluxes and transformation in sediments from Kazan mud volcano, eastern Mediterranean Sea journal July 2003
The global flux of methane from shallow submarine sediments journal January 1993
Thermogenic methane injection via bubble transport into the upper Arctic Ocean from the hydrate-charged Vestnesa Ridge, Svalbard journal May 2014
Glacio-seismotectonics: ice sheets, crustal deformation and seismicity journal October 2000
Seafloor oxygen consumption fuelled by methane from cold seeps journal August 2013
Dynamic fluid flow and chemical fluxes associated with a seafloor gas hydrate deposit on the northern Gulf of Mexico slope journal June 2008
Effects of multiphase methane supply on hydrate accumulation and fracture generation: MULTIPHASE METHANE SUPPLY journal October 2010
Pore fluid chemistry from the Second Gas Hydrate Drilling Expedition in the Ulleung Basin (UBGH2): Source, mechanisms and consequences of fluid freshening in the central part of the Ulleung Basin, East Sea journal November 2013
Pockmark formation and evolution in deep water Nigeria: Rapid hydrate growth versus slow hydrate dissolution: Pockmark formation and evolution journal April 2014
Oceanic Methane Biogeochemistry journal May 2007
The Barents Sea ice sheet - a sedimentological discussion journal January 1983

Cited By (9)

Fracture-controlled fluid transport supports microbial methane-oxidizing communities at Vestnesa Ridge journal January 2019
Methane-fuelled biofilms predominantly composed of methanotrophic ANME-1 in Arctic gas hydrate-related sediments journal July 2019
Microbial communities from Arctic marine sediments respond slowly to methane addition during ex situ enrichments journal January 2020
Discharge of Meteoric Water in the Eastern Norwegian Sea since the Last Glacial Period journal July 2019
Anomalous Concentration of Methane Emissions at the Continental Shelf Edge of the Northern Cascadia Margin journal March 2019
Geophysical and geochemical controls on the megafaunal community of a high Arctic cold seep journal January 2018
Foraminiferal δ18O reveals gas hydrate dissociation in Arctic and North Atlantic ocean sediments journal January 2020
High-resolution underwater laser spectrometer sensing provides new insights into methane distribution at an Arctic seepage site journal January 2019
Discharge of Meteoric Water in the Eastern Norwegian sea Since the last Glacial Period conference January 2020

Similar Records

Assessing the response of methane hydrates to environmental change at the Svalbard continental margin
Technical Report · Mon Oct 15 00:00:00 EDT 2018 · OSTI ID:1539738

Origin and Transformation of Light Hydrocarbons Ascending at an Active Pockmark on Vestnesa Ridge, Arctic Ocean
Journal Article · Mon Jan 13 00:00:00 EST 2020 · Journal of Geophysical Research. Solid Earth · OSTI ID:1539738

An integrated view of the methane system in the pockmarks at Vestnesa Ridge, 79°N
Journal Article · Sat Jul 08 00:00:00 EDT 2017 · Marine Geology · OSTI ID:1539738

Related Subjects