The Double (or Multiple) BSRs Observations and their Tentative Interpretations

• Published in: Advanced Materials Research
• Main Authors: Luo, Yi, Su, Xin
• Format: Article in Journal/Newspaper
• Language: English
• Published: Trans Tech Publications Ltd 2013
• Subjects: Ice; permafrost
• Online Access: https://oceanrep.geomar.de/id/eprint/29575/; https://oceanrep.geomar.de/id/eprint/29575/1/yi_xin_2013.pdf; https://doi.org/10.4028/www.scientific.net/AMR.734-737.467

Gas hydrate is a solid ice-like compound and is stable at low temperature and high pressure conditions found beneath permafrost and in marine sediments on continental margins offshore. In the marine environment, the bottom-simulating reflector (BSR) in seismic reflection profiles is interpreted to indicate the base of the gas hydrate stability zone (GHSZ).In many locations two or more sub-parallel BSRs have been reported. We not only compared the BSRs characteristics from reported areas but also discussed the mechanism of GHSZ shifts by climate change, sedimentation process and tectonic movement. We also considered the mix gases composition hydrate stability in certain marine environment and gave a simple model for the BSR differences on water depth.