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Do East Australian Current anticyclonic eddies leave the Tasman Sea?

Citation

Pilo, GS and Oke, PR and Rykova, T and Coleman, R and Ridgway, K, Do East Australian Current anticyclonic eddies leave the Tasman Sea?, Journal of Geophysical Research: Oceans, 120, (12) pp. 8099-8114. ISSN 2169-9275 (2015) [Refereed Article]

Copyright Statement

Copyright 2015 American Geophysical Union

DOI: doi:10.1002/2015JC011026

Abstract

Using satellite altimetry and high-resolution model output we analyze the pathway of large, long-lived anticyclonic eddies that originate near the East Australian Current (EAC) separation point. We show that 25-30% of these eddies propagate southward, around Tasmania, leave the Tasman Sea, and decay in the Great Australian Bight. This pathway has not been previously documented owing to poor satellite sampling off eastern Tasmania. As eddies propagate southward, they often "stall" for several months at near-constant latitude. Along the pathway eddies become increasingly barotropic. Eddy intensity is primarily influenced by merging with other eddies and a gradual decay otherwise. Surface temperature anomaly associated with anticyclonic eddies changes as they propagate, while surface salinity anomaly tends to remain relatively unchanged as they propagate.

Item Details

Item Type:Refereed Article
Keywords:Eastern Australian Current, EAC, anticyclones, Tasman Sea, eddies
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Physical Oceanography
Objective Division:Environment
Objective Group:Physical and Chemical Conditions of Water
Objective Field:Physical and Chemical Conditions of Water in Marine Environments
Author:Pilo, GS (Ms Gabriela Pilo)
Author:Coleman, R (Professor Richard Coleman)
ID Code:106090
Year Published:2015
Deposited By:IMAS Research and Education Centre
Deposited On:2016-01-28
Last Modified:2016-09-20
Downloads:0

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