DOI: 10.1016/j.earscirev.2021.103714
论文题名: Experiments on tsunami induced boulder transport – A review
作者: Oetjen J. ; Engel M. ; Schüttrumpf H.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2021
卷: 220 语种: 英语
中文关键词: Boulder transport
; Hydraulic experiment
; Parameter influence
; Physical experiment
; Tsunami
英文关键词: boulder
; experimental study
; numerical model
; sediment transport
; tsunami
; wave height
英文摘要: The interest in applying coastal boulders as a proxy for high-energy wave events, i.e., tsunamis and major storms, increased significantly during the last two decades. Studies include on-site investigations, numerical modelling or experimental studies. However, inferences on past inundation processes based on commonly used inverse modelling approaches are associated with significant uncertainties and the need for validation of relevant parameters has been expressed. Here, we review experimental studies on the transport of natural boulders (and artificial bodies) by tsunamis, which provide crucial insights into the physical parameters controlling the transport process. We summarize and categorize the differences and scopes of existing experimental studies and point out the importance of the boulders' wave-facing area and, thus, the drag force, which is highlighted in most studies. The boulder-transport mode (e.g., rolling or sliding), however, varies strongly throughout the publications. A considerable number of influencing parameters is not investigated systematically (e.g., the influence of boulder-boulder interactions) so far, and there is an agreement that existing hydrodynamic equations for mobilization thresholds tend to overestimate the necessary wave height and velocity due to the existing uncertainties. Therefore, and based on the current knowledge, working with parameter ranges (e.g., mobilization thresholds, transport-distance spans) is recommended instead of using exact values. However, we demonstrate that comparisons of the particular findings of the reviewed studies is not straightforward due to very individual experimental setups. Based on this, we propose a standardized research environment, which might simplify the knowledge transfer between studies and can possibly improve numerical models for tsunami-induced boulder transport. © 2021 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166478
Appears in Collections: 气候变化与战略
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作者单位: Institute of Hydraulic Engineering and Water Resources Management, RWTH Aachen University, Aachen, Germany; Institute of Geography, Heidelberg University, Heidelberg, Germany; Geological Survey of Belgium, OD Earth and History of Life, Royal Belgian Institute of Natural Sciences, Brussels, Belgium
Recommended Citation:
Oetjen J.,Engel M.,Schüttrumpf H.. Experiments on tsunami induced boulder transport – A review[J]. Earth Science Reviews,2021-01-01,220