气候变化领域集成服务门户(CCPortal): Wave Generation Across a Continuum of Landslide Conditions From the Collapse of Partially Submerged to Fully Submerged Granular Columns

CCPortal

DOI	10.1029/2020JC016465
	Wave Generation Across a Continuum of Landslide Conditions From the Collapse of Partially Submerged to Fully Submerged Granular Columns
	Cabrera M.A.; Pinzon G.; Take W.A.; Mulligan R.P.
发表日期	2020
ISSN	21699275
卷号	125 期号:12
英文摘要	Landslide generated tsunamis are a primary natural hazard to coastal communities and infrastructure, but the present state of knowledge is limited to the specific details of momentum transfer from the landslide to the water body for either subaerial or fully submerged conditions. Here we report a series of novel experiments and an analytical model that bridges this gap, by exploring the collapse of a granular column for a wide range of water depths. We show that the maximum seaward wave amplitude is governed by a single dimensionless ratio, the relative depth of submergence. Based on the experimental observations, we propose a continuous function that quantifies the maximum wave amplitude by considering the momentum flux from the initially vertical granular column to the initially still fluid. Predictions made using the momentum function are in good agreement with observations of the present study and with other experimental studies of granular column collapse at larger scales. The analytical model allows the prediction of maximum wave amplitude over the full range of submergence conditions from subaerial to partially submerged and fully submerged collapses, with potential applications for tsunami hazard assessment. © 2020. The Authors.
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/186560
作者单位	Department of Civil and Environmental Engineering, Universidad de los Andes, Bogota, Colombia; Department of Civil Engineering, Queen's University, Kingston, Canada
推荐引用方式 GB/T 7714	Cabrera M.A.,Pinzon G.,Take W.A.,et al. Wave Generation Across a Continuum of Landslide Conditions From the Collapse of Partially Submerged to Fully Submerged Granular Columns[J],2020,125(12).
APA	Cabrera M.A.,Pinzon G.,Take W.A.,&Mulligan R.P..(2020).Wave Generation Across a Continuum of Landslide Conditions From the Collapse of Partially Submerged to Fully Submerged Granular Columns.Journal of Geophysical Research: Oceans,125(12).
MLA	Cabrera M.A.,et al."Wave Generation Across a Continuum of Landslide Conditions From the Collapse of Partially Submerged to Fully Submerged Granular Columns".Journal of Geophysical Research: Oceans 125.12(2020).