scholarly journals Final Scientific/Technical Report: Characterizing the Response of the Cascadia Margin Gas Hydrate Reservoir to Bottom Water Warming Along the Upper Continental Slope

2017 ◽  
Author(s):  
Evan A. Solomon ◽  
H. Paul Johnson ◽  
Marie Salmi ◽  
Theresa Whorley
Keyword(s):  
Continental Slope ◽  
Gas Hydrate ◽  
Bottom Water ◽  
Hydrate Reservoir ◽  
Technical Report ◽  
Cascadia Margin ◽  
Gas Hydrate Reservoir ◽  
Scientific Technical

scholarly journals Seepage from an arctic shallow marine gas hydrate reservoir is insensitive to momentary ocean warming

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Wei-Li Hong ◽  
Marta E. Torres ◽  
JoLynn Carroll ◽  
Antoine Crémière ◽  
Giuliana Panieri ◽  
...  
Keyword(s):  
Shallow Water ◽  
Gas Hydrate ◽  
Bottom Water ◽  
Short Term ◽  
Hydrate Dissociation ◽  
Bottom Water Temperature ◽  
Hydrate Reservoir ◽  
Marine Gas Hydrate ◽  
Gas Hydrate Reservoir ◽  
Hydrate Reservoirs

Abstract Arctic gas hydrate reservoirs located in shallow water and proximal to the sediment-water interface are thought to be sensitive to bottom water warming that may trigger gas hydrate dissociation and the release of methane. Here, we evaluate bottom water temperature as a potential driver for hydrate dissociation and methane release from a recently discovered, gas-hydrate-bearing system south of Spitsbergen (Storfjordrenna, ∼380 m water depth). Modelling of the non-steady-state porewater profiles and observations of distinct layers of methane-derived authigenic carbonate nodules in the sediments indicate centurial to millennial methane emissions in the region. Results of temperature modelling suggest limited impact of short-term warming on gas hydrates deeper than a few metres in the sediments. We conclude that the ongoing and past methane emission episodes at the investigated sites are likely due to the episodic ventilation of deep reservoirs rather than warming-induced gas hydrate dissociation in this shallow water seep site.

scholarly journals 2D micromodel study of clogging behavior of fine-grained particles associated with gas hydrate production in NGHP-02 gas hydrate reservoir sediments

2019 ◽  
Vol 108 ◽  
pp. 714-730 ◽  
Author(s):  
Shuang C. Cao ◽  
Junbong Jang ◽  
Jongwon Jung ◽  
William F. Waite ◽  
Timothy S. Collett ◽  
...  
Keyword(s):  
Gas Hydrate ◽  
Reservoir Sediments ◽  
Fine Grained ◽  
Hydrate Reservoir ◽  
Gas Hydrate Reservoir
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