DOI: 10.1002/2015GL065530
论文题名: Dynamics of the direct intrusion of Gulf Stream ring water onto the Mid-Atlantic Bight shelf
作者: Zhang W.G. ; Gawarkiewicz G.G.
刊名: Geophysical Research Letters
ISSN: 0094-9118
EISSN: 1944-8849
出版年: 2015
卷: 42, 期: 18 起始页码: 7687
结束页码: 7695
语种: 英语
英文关键词: cross-shelf exchange
; Mid-Atlantic Bight
; onshore intrusion
; OOI Pioneer Array
; vorticity dynamics
; warm-core ring
Scopus关键词: Biogeochemistry
; Mercury (metal)
; Ocean currents
; Vorticity
; Cross-shelf exchange
; Mid-atlantic bights
; onshore intrusion
; OOI Pioneer Array
; Vorticity dynamics
; Warm core rings
; Rivers
; array
; biogeochemistry
; numerical model
; oceanic circulation
; satellite imagery
; shelf break
; topography
; vorticity
; Atlantic Ocean
; Gulf Stream
; Middle Atlantic Bight
英文摘要: Onshore intrusions of offshore waters onto the Mid-Atlantic Bight shelf can greatly affect shelf circulation, biogeochemistry, and fisheries. Previous studies have concentrated on onshore intrusions of slope water. Here we present a direct intrusion of Gulf Stream warm-core ring water onto the shelf representing a previously unknown exchange process at the shelfbreak. Impingement of warm-core rings at the shelfbreak generates along-isobath intrusions that grow like Pinocchio's nose, extending hundreds of kilometers to the southwest. By combining satellite and Ocean Observatory Initiative Pioneer Array data and idealized numerical simulations, we discover that the intrusion results from topographically induced vorticity variation of the ring water, rather than from entrainment of the shelfbreak frontal jet. This intrusion of the Gulf Stream ring water has important biogeochemical implications and could facilitate migration of marine species across the shelfbreak barrier and transport low-nutrient surface Gulf Stream ring water to the otherwise productive shelfbreak region. © 2015 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945207987&doi=10.1002%2f2015GL065530&partnerID=40&md5=0c705128d64263b40986b45729761891
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8734
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: Applied Ocean Physics and Engineering Department, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Recommended Citation:
Zhang W.G.,Gawarkiewicz G.G.. Dynamics of the direct intrusion of Gulf Stream ring water onto the Mid-Atlantic Bight shelf[J]. Geophysical Research Letters,2015-01-01,42(18).