

FOLLOWUS
1.Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education (MOE), Ocean University of China, Qingdao 266100, China
2.Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China
3.Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Geosciences, Ocean University of China, Qingdao 266100, China
4.Hainan Key Laboratory of Marine Geological Resources and Environment, Haikou 570206, China
5.Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China
6.Key Laboratory of Gas Hydrate, Ministry of Natural Resources, Qingdao Institute of Marine Geology, Qingdao 266061, China
7.Laboratory of Marine Geophysics and Georeource, Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China
jiangxin_chen@sina.com
yonggang@ouc.edu.cn
Received:09 March 2022,
Published:01 March 2023
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ZHU Chaoqi,LI Sanzhong,CHEN Jiangxin,et al.Nepheloid layer generation by gas eruption: unexpected experimental results[J].Journal of Oceanology and Limnology,2023,41(02):769-777.
Knowledge of nepheloid layers is important to improve the understanding of physical
geological
and sedimentary processes from continental shelf to abyssal environments. We had not tried to study the nepheloid layers in a hydrate-associated tank until unexpected results occurred. Tank experimental results show that gas eruptions triggered intermediate nepheloid layers. Thus
we proposed a new mechanism of intermediate nepheloid layer generation by eruptions. The intermediate nepheloid layers were generated in uniform-density fluid
which indicated that stratified fluid is not a necessary condition for intermediate nepheloid layers. Sufficient space for advection and an oblique slope for detachment are the key ingredients for intermediate nepheloid layer generation by eruptions. Our experiments also offer a new experimental evidence for bottom nepheloid layer generation by earthquakes. Given the scale effects of laboratory experiment
it is important to determine whether submarine volcanic eruption or hydrate-associated venting causes intermediate nepheloid layer in the nature.
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