DOI: 10.1002/grl.50126
论文题名: Puzzling over the dynamics of the Lofoten Basin - A sub-Arctic hot spot of ocean variability
作者: Volkov D.L. ; Belonenko T.V. ; Foux V.R.
刊名: Geophysical Research Letters
ISSN: 0094-9294
EISSN: 1944-9025
出版年: 2013
卷: 40, 期: 4 起始页码: 738
结束页码: 743
语种: 英语
英文关键词: lofoten Basin
; Norwegian Sea
; Rossby waves
; satellite altimetry
; sea level
; topographic waves
Scopus关键词: Amplification
; Aneroid altimeters
; Dispersions
; Internet protocols
; Sea level
; lofoten Basin
; Norwegian Sea
; Rossby wave
; Satellite altimetry
; Topographic waves
; Ocean currents
; climate variation
; cyclone
; drifter
; Rossby wave
; satellite altimetry
; sea surface height
; subarctic region
; synoptic meteorology
; trajectory
; wave modeling
; Arctic Ocean
; Lofoten Basin
; Norwegian Sea
英文摘要: A sub-Arctic "hot spot" of intense synoptic-scale variability is observed in the Lofoten Basin (LB) of the Norwegian Sea. Using ERS-1/2 and Envisat satellite altimetry measurements, we discover a cyclonic propagation of the synoptic-scale sea surface height anomalies around the center of the LB. Surface drifter trajectories do not reveal an associated coherent near-surface cyclonic flow suggesting that the propagating signals have a wavelike nature. We identify a dipole and a quadrupole wave modes rotating around the center of the LB, obtain analytic dispersion relations for these modes, and demonstrate that the observed propagation is a manifestation of topographic Rossby waves. Most of the observed waves have a wavelength of about 500 km and phase speeds ranging from 2 to 10 km/day. We show that these waves are largely responsible for the localization and amplification of sea surface height variability in the center of the LB. Key Points discovered cyclonic propagation of SSH anomalies around the center of LB propagation is related to topographic Rossby waves waves are responsible for the amplification of SSH variability in the LB ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878180451&doi=10.1002%2fgrl.50126&partnerID=40&md5=50905cf7f51270733427e67eb8f9e0ba
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6558
Appears in Collections: 气候减缓与适应
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作者单位: Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, CA, United States
Recommended Citation:
Volkov D.L.,Belonenko T.V.,Foux V.R.. Puzzling over the dynamics of the Lofoten Basin - A sub-Arctic hot spot of ocean variability[J]. Geophysical Research Letters,2013-01-01,40(4).