气候变化领域集成服务门户(CCPortal): Laboratory Experiments on Tsunamigenic Discrete Subaqueous Volcanic Eruptions. Part 2: Properties of Generated Waves

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DOI	10.1029/2020JC016587
	Laboratory Experiments on Tsunamigenic Discrete Subaqueous Volcanic Eruptions. Part 2: Properties of Generated Waves
	Shen Y.; Whittaker C.N.; Lane E.M.; White J.D.L.; Power W.; Nomikou P.
发表日期	2021
ISSN	21699275
卷号	126 期号:5
英文摘要	Submarine volcanic eruptions have the potential to generate tsunamis, which can cause destruction well beyond the range of the eruption itself. Here, we present a series of underwater eruption experiments in which a non-condensing gas was injected into a water tank with a range of water depths and applied pressures. This study proposes an effective scaled water depth and categorizes underwater eruptions into three types: deep-water eruptions, intermediate-water eruptions, and shallow-water eruptions. In deep-water eruptions, most of the energy is dissipated within the water column before the plume reaches the surface, and negligible waves are generated. In intermediate-water eruptions, reductions in water depth reduce the loss of energy to the water column, leaving more energy available for wave generation. This causes an increase in wave heights as water shallows, up to a point. In sufficiently shallow-water cases, the water depth is so small that almost all of the energy from the eruptive jet or plume passes through the water and is dissipated into the air, so there is only small wave-making potential, even with relatively intense source strength. Therefore, there exists a critical water depth at which an eruption with a given source intensity will generate the largest waves. That depth lies at the boundary between the intermediate- and shallow-depth regimes, where the energy available for wave generation is at a maximum. This research reveals fundamental wave generation mechanisms related to underwater gas eruptions, thereby extending our understanding of submarine volcanic tsunami generation and providing a foundation for future hazard assessment. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	critical water depth; laboratory experiment; maximum wave height; subaqueous volcanic eruption; submarine volcano; tsunami wave
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186340
作者单位	Department of Civil and Environmental Engineering, University of Auckland, Auckland, New Zealand; National Institute of Water and Atmospheric Research (NIWA), Christchurch, New Zealand; Department of Geology, University of Otago, Dunedin, New Zealand; GNS Science, Lower Hutt, New Zealand; Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Athens, Greece
推荐引用方式 GB/T 7714	Shen Y.,Whittaker C.N.,Lane E.M.,et al. Laboratory Experiments on Tsunamigenic Discrete Subaqueous Volcanic Eruptions. Part 2: Properties of Generated Waves[J],2021,126(5).
APA	Shen Y.,Whittaker C.N.,Lane E.M.,White J.D.L.,Power W.,&Nomikou P..(2021).Laboratory Experiments on Tsunamigenic Discrete Subaqueous Volcanic Eruptions. Part 2: Properties of Generated Waves.Journal of Geophysical Research: Oceans,126(5).
MLA	Shen Y.,et al."Laboratory Experiments on Tsunamigenic Discrete Subaqueous Volcanic Eruptions. Part 2: Properties of Generated Waves".Journal of Geophysical Research: Oceans 126.5(2021).