DOI: 10.1002/2014GL062260
论文题名: Influence of a western boundary current on shelf dynamics and upwelling from repeat glider deployments
作者: Schaeffer A. ; Roughan M.
刊名: Geophysical Research Letters
ISSN: 0094-9088
EISSN: 1944-8819
出版年: 2015
卷: 42, 期: 1 起始页码: 121
结束页码: 128
语种: 英语
英文关键词: autonomous ocean glider
; continental shelf processes
; current driven upwelling
; East Australian Current
Scopus关键词: Climatology
; Gliders
; Separation
; Stream flow
; Continental shelves
; Current-driven
; Momentum balances
; Ocean gliders
; Separation zone
; Shelf circulation
; Spatial extent
; Western boundary currents
; Rivers
; advection
; coastal zone
; geostrophic flow
; momentum transfer
; shelf dynamics
; upwelling
; water mass
; western boundary current
英文摘要: The separation zone of a dynamically important western boundary current (WBC) is resolved through a series of sustained glider deployments along the coastal edge of the jet. The comprehensive data set from 23 missions (2008-2014) provides a new high-resolution hydrographic climatology which is exploited to understand the spatial extent of dense water uplift and the depth-averaged momentum balances across the East Australian Current (EAC) separation zone. The predominantly geostrophic shelf circulation and temperature fields are least (most) variable upstream (downstream), where encroachment (separation) dominates. For the first time we resolve the nonlinear advection terms which are considerable in the along-shelf momentum balance. Near bottom water masses indicate dense water uplift, as a result of the EAC encroachment and separation. The data provide both new insight into and a climatology of separation-induced uplift and demonstrate a successful model for repeat glider missions in a dynamic WBC environment. Key Points New high-resolution climatology in the EAC separation zone from gliders Upwelling associated with EAC encroachment and separation is mapped Depth-averaged momentum balance reveals the determinant role of advection ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921863420&doi=10.1002%2f2014GL062260&partnerID=40&md5=fe41f8e5608fcb1c4ba4025f8794e676
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8704
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: School of Mathematics and Statistics, University of New South Wales, Sydney, NSW, Australia
Recommended Citation:
Schaeffer A.,Roughan M.. Influence of a western boundary current on shelf dynamics and upwelling from repeat glider deployments[J]. Geophysical Research Letters,2015-01-01,42(1).