scholarly journals Observation Impact in a Regional Reanalysis of the East Australian Current System

2018 ◽  
Vol 123 (10) ◽  
pp. 7511-7528 ◽  
Author(s):  
Colette Kerry ◽  
Moninya Roughan ◽  
Brian Powell
Keyword(s):  
Current System ◽  
East Australian Current ◽  
Observation Impact ◽  
Regional Reanalysis

The Dynamics of the East Australian Current System: The Tasman Front, the East Auckland Current, and the East Cape Current

2001 ◽  
Vol 31 (10) ◽  
pp. 2917-2943 ◽  
Author(s):  
Charles E. Tilburg ◽  
Harley E. Hurlburt ◽  
James J. O'Brien ◽  
Jay F. Shriver
Keyword(s):  
Current System ◽  
East Australian Current

scholarly journals A high-resolution biogeochemical model (ROMS 3.4 + bio_Fennel) of the East Australian Current system

2019 ◽  
Vol 12 (1) ◽  
pp. 441-456 ◽  
Author(s):  
Carlos Rocha ◽  
Christopher A. Edwards ◽  
Moninya Roughan ◽  
Paulina Cetina-Heredia ◽  
Colette Kerry
Keyword(s):  
Climate Change ◽  
High Resolution ◽  
Fishery Management ◽  
Numerical Models ◽  
Current System ◽  
Ecosystem Dynamics ◽  
Biogeochemical Model ◽  
East Australian Current ◽  
Surface Patterns ◽  
Insight Into

Abstract. Understanding phytoplankton dynamics is critical across a range of topics, spanning from fishery management to climate change mitigation. It is particularly interesting in the East Australian Current (EAC) system, as the region's eddy field strongly conditions nutrient availability and therefore phytoplankton growth. Numerical models provide unparalleled insight into these biogeochemical dynamics. Yet, to date, modelling efforts off southeastern Australia have either targeted case studies (small spatial and temporal scales) or encompassed the whole EAC system but focused on climate change effects at the mesoscale (with a spatial resolution of 1/10∘). Here we couple a model of the pelagic nitrogen cycle (bio_Fennel) to a 10-year high-resolution (2.5–5 km horizontal) three-dimensional ocean model (ROMS) to resolve both regional and finer-scale biogeochemical processes occurring in the EAC system. We use several statistical metrics to compare the simulated surface chlorophyll to an ocean colour dataset (Copernicus-GlobColour) for the 2003–2011 period and show that the model can reproduce the observed phytoplankton surface patterns with a domain-wide RMSE of approximately 0.2 mg Chl a m−3 and a correlation coefficient of 0.76. This coupled configuration will provide a much-needed framework to examine phytoplankton variability in the EAC system providing insight into important ecosystem dynamics such as regional nutrient supply mechanisms and biogeochemical cycling occurring in EAC eddies.

scholarly journals A tale of two eddies: The biophysical characteristics of two contrasting cyclonic eddies in the East Australian Current System

2017 ◽  
Vol 122 (3) ◽  
pp. 2494-2518 ◽  
Author(s):  
M. Roughan ◽  
S. R. Keating ◽  
A. Schaeffer ◽  
P. Cetina Heredia ◽  
C. Rocha ◽  
...  
Keyword(s):  
Current System ◽  
East Australian Current

scholarly journals Retention and Leakage of Water by Mesoscale Eddies in the East Australian Current System

2019 ◽  
Vol 124 (4) ◽  
pp. 2485-2500 ◽  
Author(s):  
Paulina Cetina‐Heredia ◽  
Moninya Roughan ◽  
Erik Sebille ◽  
Shane Keating ◽  
Gary B. Brassington
Keyword(s):  
Current System ◽  
Mesoscale Eddies ◽  
East Australian Current

Nearshore features of the East Australian Current System

1983 ◽  
Vol 34 (1) ◽  
pp. 105 ◽  
Author(s):  
GR Cresswell ◽  
C Ellyett ◽  
R Legeckis ◽  
AF Pearce
Keyword(s):  
New South ◽  
Current System ◽  
New South Wales ◽  
Colour Change ◽  
Breaking Waves ◽  
Visual Observation ◽  
Warm Water ◽  
Research Vessel ◽  
East Australian Current ◽  
South Wales

An airborne infrared scanner was used to map fronts and wakes that occurred at New South Wales headlands and islets. The major front was interpreted as consisting of warm water flowing southward to Point Plomer and then separating from the coast at a 60� angle. Cooler southern water flowed northward to the front and was probably entrained into it. Visual observation from the air showed a colour change and breaking waves at the front. A system of cool northward flowing littoral currents appeared to occur independently of the offshore currents. The relation of the front to the overall East Australian Current system could be interpreted from data obtained by the NOAA-6 satellite and a research vessel at the time.

Geographical distribution, growth and breeding miagration of the eastern Australian king prawn Penaeus plebejus Hess

1975 ◽  
Vol 26 (3) ◽  
pp. 343 ◽  
Author(s):  
NV Ruello
Keyword(s):  
Carapace Length ◽  
East Coast ◽  
Current System ◽  
Adult Population ◽  
East Australian Current ◽  
Estuarine Habitat ◽  
Lord Howe Island ◽  
Length Increment ◽  
The Relationship ◽  
Large Adult

P. plebejus is commonly caught along the east coast of Australia between Bundaberg (25�S.) and Lakes Entrance (38�S.) and a few specimens have been recorded from Lord Howe Island and Tasmania. The results of tagging studies conducted to determine the relationship between juvenile (estuarine) stocks and adults at sea suggest that maturing prawns migrate along the coast to breed in warmer oceanic waters north of their estuarine habitat. The stocks from different estuaries mix at sea and appear to form a single large adult population in south-east Australia. It is postulated that the larvae are carried south from the spawning area by the East Australian Current system, occasionally as far south as Tasmania or east to Lord Howe Island (but not to New Zealand). The longest migration was 930 km (in 260 days) which is a record for an adult crustacean. The highest growth rate observed was a carapace length increment of 19½ mm (from 20½ to 40 mm) in 4 months.

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