Category:

Author(s): ,

Keywords: , , , , , , , , , , , , , , , ,

Abstract: To evaluate the effect of climate change on the stability of methane hydrates in the seafloor, thermal conductivity measurements were performed in hydrate-bearing sediment. Using the renormalization and labeling technique methods, alongside of the Hot Disk thermal constants analyzer, the effective thermal conductivity (ETC) of methane hydrate-bearing sand and tetrahydrofuran (THF) hydrate-bearing sand were measured and found to be 1 W/mK and 2 W/mK, respectively. The thermal conductivity of methane hydrates and THF hydrates were also measured and found to be 0.575 W/mK and 0.51 W/mK, respectively. Although similar thermal conductivity readings, the methane hydrate-bearing sand has a lower ETC than the THF hydrate-bearing sand, most likely due to the presence of gas in the pore spaces of the sand.

Reference: Journal of Geophysical Research: Solid Earth, 110, (2005)

DOI: 10.1029/2004JB003314