globalchange  > 科学计划与规划
DOI: 10.1002/2016GL070357
论文题名:
Submesoscale evolution of surface drifter triads in the Gulf of Mexico
作者: Berta M.; Griffa A.; Özgökmen T.M.; Poje A.C.
刊名: Geophysical Research Letters
ISSN: 0094-8411
EISSN: 1944-8142
出版年: 2016
卷: 43, 期:22
起始页码: 11751
结束页码: 11759
语种: 英语
英文关键词: divergence ; drifter triads ; shape metrics ; strain rate ; submesoscales
Scopus关键词: Velocity ; Coriolis parameter ; Divergence ; Drifter triads ; Geostrophic velocity fields ; Northern Gulf of Mexico ; Satellite altimetry ; Shape metrics ; Submesoscales ; Strain rate
英文摘要: Triangle shape metrics are analyzed to quantify the evolution of submesoscale (100–500 m initial separation) surface drifter triplets released in the northern Gulf of Mexico. The observations are compared to synthetic drifters advected by geostrophic velocity fields derived from satellite altimetry. Observed submesoscale triads evolve rapidly, reaching highly elongated configurations on timescales of 6 h to 2 days, in contrast to 6 days or longer for altimetry-derived synthetic data. Estimates of horizontal divergence and strain rate from the drifter triplets indicate the relative importance of divergence in the evolution of triangle shape. Horizontal divergence is scale dependent, on the order of the local Coriolis parameter, and 2 to 3 times larger for initial 100 m scales compared to initial 500 m scales. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85004093013&doi=10.1002%2f2016GL070357&partnerID=40&md5=4f419201b27aa96a577e87f8b9cee37a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9374
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: CNR-ISMAR, La Spezia, Italy

Recommended Citation:
Berta M.,Griffa A.,Özgökmen T.M.,et al. Submesoscale evolution of surface drifter triads in the Gulf of Mexico[J]. Geophysical Research Letters,2016-01-01,43(22).
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