DOI: 10.1002/2014GL063004
论文题名: Onshore sandbar migration in the surf zone: New insights into the wave-induced sediment transport mechanisms
作者: Fernández-Mora A. ; Calvete D. ; Falqués A. ; De Swart H.E.
刊名: Geophysical Research Letters
ISSN: 0094-8757
EISSN: 1944-8488
出版年: 2015
卷: 42, 期: 8 起始页码: 2869
结束页码: 2877
语种: 英语
英文关键词: morphodynamic modeling
; sandbar migration
; wave velocity skewness
Scopus关键词: Higher order statistics
; Sediment transport
; Sedimentation
; Sediments
; Shear stress
; Velocity
; Wave propagation
; Acceleration skewness
; Bed shear stresss
; Morphodynamic modeling
; Sandbar migration
; Transport mechanism
; Transport process
; Velocity skewness
; Wave velocity
; Shear flow
; acceleration
; accuracy assessment
; flow velocity
; landform evolution
; morphodynamics
; sandbar
; sediment transport
; simulation
; surf zone
; water flow
英文摘要: We present a novel process-based morphodynamic model, which includes transport processes due to both velocity and acceleration skewness and a new formulation for intrawave motions, that successfully simulates observations of onshore sandbar migration. Results confirm findings of previous studies, in which each process was considered separately and in which sediment transport was computed from the observed water motion. However, our results indicate that accounting for the joint action of both velocity and acceleration skewnesses causes major improvement of the modeled onshore bar migration and is essential to accurately model the evolution of the entire cross-shore bottom profile, when compared with observations. We also demonstrate that the morphodynamics in the shoaling zone are dominated by velocity skewness (bed shear stresses), while sediment transport induced by acceleration skewness (pressure gradients) controls the morphodynamics in the inner surf zone. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929504897&doi=10.1002%2f2014GL063004&partnerID=40&md5=0781f39650f57d8205694a05e0a39e8e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8373
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Applied Physics, Universitat Politècnica de CatalunyaBarcelonaTech, Barcelona, Spain
Recommended Citation:
Fernández-Mora A.,Calvete D.,Falqués A.,et al. Onshore sandbar migration in the surf zone: New insights into the wave-induced sediment transport mechanisms[J]. Geophysical Research Letters,2015-01-01,42(8).