A remote station to monitor sea floor stability and gas hydrate outcrops in the Gulf of Mexico

2002 ◽  
Author(s):  
J.R. Woolsey ◽  
T.M. McGee ◽  
C.R. Partouche
Keyword(s):  
Gulf Of Mexico ◽  
Gas Hydrate ◽  
Sea Floor ◽  
Remote Station ◽  
Floor Stability

Gas hydrate that breaches the sea floor on the continental slope of the Gulf of Mexico

Geology ◽  
1994 ◽  
Vol 22 (8) ◽  
pp. 699 ◽  
Author(s):  
I. R. MacDonald ◽  
N. L. Guinasso, Jr. ◽  
R. Sassen ◽  
J. M. Brooks ◽  
L. Lee ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Continental Slope ◽  
Gas Hydrate ◽  
Sea Floor

Exclusion of 2-methylbutane (isopentane) during crystallization of structure II gas hydrate in sea-floor sediment, Gulf of Mexico

2000 ◽  
Vol 31 (11) ◽  
pp. 1257-1262 ◽  
Author(s):  
Roger Sassen ◽  
Stephen T Sweet ◽  
Debra A DeFreitas ◽  
Alexei V Milkov
Keyword(s):  
Gulf Of Mexico ◽  
Gas Hydrate ◽  
Sea Floor

Thermal and visual time-series at a seafloor gas hydrate deposit on the Gulf of Mexico slope

2005 ◽  
Vol 233 (1-2) ◽  
pp. 45-59 ◽  
Author(s):  
I MACDONALD ◽  
L BENDER ◽  
M VARDARO ◽  
B BERNARD ◽  
J BROOKS
Keyword(s):  
Time Series ◽  
Gulf Of Mexico ◽  
Gas Hydrate ◽  
Hydrate Deposit

Potentially Large Subsurface Gas Hydrate Bodies in the Mexican Ridges, Southwestern Gulf of Mexico

2021 ◽  
pp. 1-29
Author(s):  
Papia Nandi ◽  
Patrick Fulton ◽  
James Dale
Keyword(s):  
Gulf Of Mexico ◽  
Gas Hydrate ◽  
Seismic Data ◽  
Poor Quality ◽  
Reflection Point ◽  
Seismic Reflection Data ◽  
Reflection Data ◽  
High Impedance ◽  
Acoustic Velocities ◽  
Seismic Images

As rising ocean temperatures can destabilize gas hydrate, identifying and characterizing large shallow hydrate bodies is increasingly important in order to understand their hazard potential. In the southwestern Gulf of Mexico, reanalysis of 3D seismic reflection data reveals evidence for the presence of six potentially large gas hydrate bodies located at shallow depths below the seafloor. We originally interpreted these bodies as salt, as they share common visual characteristics on seismic data with shallow allochthonous salt bodies, including high-impedance boundaries and homogenous interiors with very little acoustic reflectivity. However, when seismic images are constructed using acoustic velocities associated with salt, the resulting images were of poor quality containing excessive moveout in common reflection point (CRP) offset image gathers. Further investigation reveals that using lower-valued acoustic velocities results in higher quality images with little or no moveout. We believe that these lower acoustic values are representative of gas hydrate and not of salt. Directly underneath these bodies lies a zone of poor reflectivity, which is both typical and expected under hydrate. Observations of gas in a nearby well, other indicators of hydrate in the vicinity, and regional geologic context, all support the interpretation that these large bodies are composed of hydrate. The total equivalent volume of gas within these bodies is estimated to potentially be as large as 1.5 gigatons or 10.5 TCF, considering uncertainty for estimates of porosity and saturation, comparable to the entire proven natural gas reserves of Trinidad and Tobago in 2019.

Late Pleistocene–Holocene sedimentation surrounding an active seafloor gas-hydrate and cold-seep field on the Northern Gulf of Mexico Slope

2010 ◽  
Vol 278 (1-4) ◽  
pp. 43-53 ◽  
Author(s):  
Wesley C. Ingram ◽  
Stephen R. Meyers ◽  
Charlotte A. Brunner ◽  
Christopher S. Martens
Keyword(s):  
Gulf Of Mexico ◽  
Late Pleistocene ◽  
Gas Hydrate ◽  
Cold Seep ◽  
Northern Gulf Of Mexico
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