Category: Transient Plane Source
Keywords: erosion, global climate change, hydrate-bearing marine sediments, methane hydrate, natural gas, natural gas hydrate stability, renormalization method, seafloor stability, submarine formation, Temperature, tetrahydrofurane, tetrahydrofurane (THF), Thermal Conductivity, THF, TPS, Transient Plane Source, Transient plane source (TPS) method
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 a 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)