DOI: 10.1002/2015GL063944
论文题名: A self-similar scaling for cross-shelf exchange driven by transient rip currents
作者: Suanda S.H. ; Feddersen F.
刊名: Geophysical Research Letters
ISSN: 0094-9583
EISSN: 1944-9314
出版年: 2015
卷: 42, 期: 13 起始页码: 5427
结束页码: 5434
语种: 英语
英文关键词: Boussinesq wave model
; nearshore oceanography
; transient rip currents
Scopus关键词: Beaches
; Coastal engineering
; Ocean currents
; Tailings disposal
; Cross-shelf exchange
; Exchange process
; Exchange velocity
; Model simulation
; Nearshores
; Recreational beaches
; Rip currents
; Wave modeling
; Power quality
; beach
; Boussinesq equation
; continental shelf
; episodic event
; nearshore dynamics
; rip current
; Stokes formula
; surf zone
; velocity profile
; wave modeling
英文摘要: Transient rip currents, episodic offshore flows from the surf zone to the inner shelf, present a recreational beach hazard and exchange material across the nearshore ocean. The magnitude and offshore extent of transient rip-current-induced exchange and its relative importance to other inner shelf exchange processes are poorly understood. Here 120 model simulations with random, normally incident, directionally spread waves spanning a range of beach slopes and wave conditions show that the transient rip current exchange velocity is self-similar. The nondimensional exchange velocity, surf zone flushing time, and cross-shore decay length scale are scaled by beach slope and wave properties, depending strongly on wave directional spread. Transient rip-current-driven exchange can be compared to other cross-shelf exchange processes. For example, transient rip-current-driven exchange is stronger than wave-induced Stokes-drift-driven exchange up to six surf zone widths from shore. Key Points Cross-shore exchange velocity due to transient rip currents is self-similar The exchange velocity profile is scaled by incident waves and beach slope Transient rip current exchange exceeds Stokes drift up to six surf zone widths. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938207424&doi=10.1002%2f2015GL063944&partnerID=40&md5=04525944f7ae31c9249fb371fdc3405b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9198
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: Scripps Institution of Oceanography, San Diego, CA, United States
Recommended Citation:
Suanda S.H.,Feddersen F.. A self-similar scaling for cross-shelf exchange driven by transient rip currents[J]. Geophysical Research Letters,2015-01-01,42(13).