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Ocean circulation on the North Australian Shelf

Citation

Schiller, A, Ocean circulation on the North Australian Shelf, Continental Shelf Research, 31, (10) pp. 1087-1095. ISSN 0278-4343 (2011) [Refereed Article]

Copyright Statement

Copyright 2011 Crown Copyright

DOI: doi:10.1016/j.csr.2011.03.013

Abstract

The ocean circulation on Australia's Northern Shelf is dominated by the Monsoon and influenced by large-scale interannual variability. These driving forces exert an ocean circulation that influences the deep Timor Sea Passage of the Indonesian Throughflow, the circulation on the Timor and Arafura Shelves and, further downstream, the Leeuwin Current. Seasonal maxima of northeastward (southwestward) volume transports on the shelf are almost symmetric and exceed 106m3/s in February (June). The associated seasonal cycle of vertical upwelling from June to August south of 8.5S and between 124E and 137.5E exceeds 1.5106m3/s across 40m depth. During El Nio events, combined anomalies from the seasonal means of high regional wind stresses and low inter-ocean pressure gradients double the northeastward volume transport on the North Australian Shelf to 1.5106m3/s which accounts for 20% of the total depth-integrated transport across 124E and reduce the total transport of the Indonesian Throughflow. Variability of heat content on the shelf is largely determined by Pacific and Indian Ocean equatorial wind stress anomalies with some contribution from local wind stress forcing.

Item Details

Item Type:Refereed Article
Keywords:heat content, interannual variability, monsoon, shelf-scale circulation, upwelling
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Physical Oceanography
Objective Division:Environment
Objective Group:Other Environment
Objective Field:Marine Oceanic Processes (excl. climate related)
Author:Schiller, A (Dr Andreas Schiller)
ID Code:119000
Year Published:2011
Web of Science® Times Cited:11
Deposited By:Ecology and Biodiversity
Deposited On:2017-07-25
Last Modified:2017-11-01
Downloads:0

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