Effect of grain characteristics on the behaviour of disseminated methane hydrate bearing sediments.
Results of seismic surveys are routinely used to assess the presence of methane hydrate in deep ocean sediments. Accurate estimates of hydrate distribution and volume within the sediment are required to assess the potential of gas hydrate as an energy resource, driver for climate change or as a geot...
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ftsouthampton:oai:eprints.soton.ac.uk:63129 2023-07-30T04:04:54+02:00 Effect of grain characteristics on the behaviour of disseminated methane hydrate bearing sediments. Kingston, Emily Clayton, Chris Priest, Jeffery Best, Angus 2008-07-06 text https://eprints.soton.ac.uk/63129/ https://eprints.soton.ac.uk/63129/1/ICGH_05812.pdf en eng https://eprints.soton.ac.uk/63129/1/ICGH_05812.pdf Kingston, Emily, Clayton, Chris, Priest, Jeffery and Best, Angus (2008) Effect of grain characteristics on the behaviour of disseminated methane hydrate bearing sediments. 6th International Conference on Gas Hydrates (ICGH 2008), , Vancouver, Canada. 06 - 10 Jul 2008. 9 pp . Conference or Workshop Item NonPeerReviewed 2008 ftsouthampton 2023-07-09T21:03:12Z Results of seismic surveys are routinely used to assess the presence of methane hydrate in deep ocean sediments. Accurate estimates of hydrate distribution and volume within the sediment are required to assess the potential of gas hydrate as an energy resource, driver for climate change or as a geotechnical hazard. However, seismic velocity may be affected not only by the quantity and morphology of the hydrate, but also by the properties of the host sediment, for example its particle size distribution and grain shape. This paper reports the results of experiments conducted to determine dynamic geophysical properties such as compressional wave velocity (Vp), shear wave velocity (Vs) and their respective attenuation measurements (Qp-1 and Qs-1) of specimens with varying amounts of disseminated methane hydrate within materials with different particle shapes and sizes. The results show that the impact of disseminated hydrate is affected both by mean particle size and by particle sphericity, with the surface area of the sediment grains influencing the spread of hydrate throughout a material and therefore it’s bonding capabilities. The sediments with 10% hydrate content show the highest surface areas correspond to the least increase in seismic velocity while sediments with low surface areas gives the most. The behaviour of granular soils is known to be influenced by characteristics of the soil such as hydrate bearing sediments. Conference Object Methane hydrate University of Southampton: e-Prints Soton |
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University of Southampton: e-Prints Soton |
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English |
description |
Results of seismic surveys are routinely used to assess the presence of methane hydrate in deep ocean sediments. Accurate estimates of hydrate distribution and volume within the sediment are required to assess the potential of gas hydrate as an energy resource, driver for climate change or as a geotechnical hazard. However, seismic velocity may be affected not only by the quantity and morphology of the hydrate, but also by the properties of the host sediment, for example its particle size distribution and grain shape. This paper reports the results of experiments conducted to determine dynamic geophysical properties such as compressional wave velocity (Vp), shear wave velocity (Vs) and their respective attenuation measurements (Qp-1 and Qs-1) of specimens with varying amounts of disseminated methane hydrate within materials with different particle shapes and sizes. The results show that the impact of disseminated hydrate is affected both by mean particle size and by particle sphericity, with the surface area of the sediment grains influencing the spread of hydrate throughout a material and therefore it’s bonding capabilities. The sediments with 10% hydrate content show the highest surface areas correspond to the least increase in seismic velocity while sediments with low surface areas gives the most. The behaviour of granular soils is known to be influenced by characteristics of the soil such as hydrate bearing sediments. |
format |
Conference Object |
author |
Kingston, Emily Clayton, Chris Priest, Jeffery Best, Angus |
spellingShingle |
Kingston, Emily Clayton, Chris Priest, Jeffery Best, Angus Effect of grain characteristics on the behaviour of disseminated methane hydrate bearing sediments. |
author_facet |
Kingston, Emily Clayton, Chris Priest, Jeffery Best, Angus |
author_sort |
Kingston, Emily |
title |
Effect of grain characteristics on the behaviour of disseminated methane hydrate bearing sediments. |
title_short |
Effect of grain characteristics on the behaviour of disseminated methane hydrate bearing sediments. |
title_full |
Effect of grain characteristics on the behaviour of disseminated methane hydrate bearing sediments. |
title_fullStr |
Effect of grain characteristics on the behaviour of disseminated methane hydrate bearing sediments. |
title_full_unstemmed |
Effect of grain characteristics on the behaviour of disseminated methane hydrate bearing sediments. |
title_sort |
effect of grain characteristics on the behaviour of disseminated methane hydrate bearing sediments. |
publishDate |
2008 |
url |
https://eprints.soton.ac.uk/63129/ https://eprints.soton.ac.uk/63129/1/ICGH_05812.pdf |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
https://eprints.soton.ac.uk/63129/1/ICGH_05812.pdf Kingston, Emily, Clayton, Chris, Priest, Jeffery and Best, Angus (2008) Effect of grain characteristics on the behaviour of disseminated methane hydrate bearing sediments. 6th International Conference on Gas Hydrates (ICGH 2008), , Vancouver, Canada. 06 - 10 Jul 2008. 9 pp . |
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1772816533142110208 |