DOI: 10.1002/2017JC013287
Scopus记录号: 2-s2.0-85042111782
论文题名: Three-Dimensional Dynamics of Baroclinic Tides Over a Seamount
作者: Vlasenko V. ; Stashchuk N. ; Nimmo-Smith W.A.M.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 2 起始页码: 1263
结束页码: 1285
语种: 英语
英文关键词: baroclinic tides
; energy focusing
; internal waves
; larvae dispersion
; residual currents
; seamounts
Scopus关键词: anticyclone
; cyclone
; general circulation model
; internal tide
; internal wave
; pycnocline
; seamount
; surface layer
; three-dimensional modeling
; velocity profile
; wave dispersion
; wave generation
; Atlantic Ocean
; Atlantic Ocean (North)
英文摘要: The Massachusetts Institute of Technology general circulation model is used for the analysis of baroclinic tides over Anton Dohrn Seamount (ADS), in the North Atlantic. The model output is validated against in situ data collected during the 136th cruise of the RRS “James Cook” in May–June 2016. The observational data set includes velocity time series recorded at two moorings as well as temperature, salinity, and velocity profiles collected at 22 hydrological stations. Synthesis of observational and model data enabled the reconstruction of the details of baroclinic tidal dynamics over ADS. It was found that the baroclinic tidal waves are generated in the form of tidal beams radiating from the ADS periphery to its center, focusing tidal energy in a surface layer over the seamount's summit. This energy focusing enhances subsurface water mixing and the local generation of internal waves. The tidal beams interacting with the seasonal pycnocline generate short-scale internal waves radiating from the ADS center. An important ecological outcome from this study concerns the pattern of residual currents generated by tides. The rectified flows over ADS have the form of a pair of dipoles, cyclonic and anticyclonic eddies located at the seamount's periphery. These eddies are potentially an important factor in local larvae dispersion and their escape from ADS. © 2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114607
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: School of Biological and Marine Sciences, Plymouth University, Plymouth, United Kingdom
Recommended Citation:
Vlasenko V.,Stashchuk N.,Nimmo-Smith W.A.M.. Three-Dimensional Dynamics of Baroclinic Tides Over a Seamount[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(2)