Leeuwin Current
The Leeuwin Current is a warm ocean current which flows southwards near the western coast of Australia. It rounds Cape Leeuwin to enter the waters south of Australia where its influence extends as far as Tasmania.
The West Australian Current and Southern Australian Countercurrent, which are produced by the West Wind Drift on the southern Indian Ocean and at Tasmania, respectively, flow in the opposite direction, producing one of the most interesting oceanic current systems in the world.
Its strength varies through the year; it is weakest during the summer months (winter in the northern hemisphere) from November to March when the winds tend to blow strongly from the south west northwards. The greatest flow is in the autumn and winter (March to November) when the opposing winds are weakest. Evaporation from the Leeuwin current during this period contributes greatly to the rainfall in the southwest region of Western Australia.
Typically the Leeuwin Current's speed and its eddies are about 1 knot (50 cm/s), although speeds of 2 knots (1 m/s) are common, and the highest speed ever recorded by a drifting satellite-tracked buoy was 3.5 knots (6.5 km/h). The Leeuwin Current is shallow for a major current system, by global standards, being about 300 m deep, and lies on top of a northwards countercurrent called the Leeuwin Undercurrent.
The Leeuwin Current is very different from the cooler, equatorward flowing currents found along coasts at equivalent latitudes such as the southwest African Coast (the Benguela Current); the long Chile-Peru Coast (the Humboldt Current), where upwelling of cool nutrient-rich waters from below the surface results in some of the most productive fisheries; the California Current, which brings foggy conditions to San Francisco; or the cool Canary current of North Africa.
Because of the Leeuwin Current, the continental shelf waters of Western Australia are warmer in winter and cooler in summer than the corresponding regions off the other continents. The Leeuwin Current is also responsible for the presence of the most southerly true corals at the Abrolhos Islands and the transport of tropical marine species down the west coast and across into the Great Australian Bight.
The ‘core’ of the Leeuwin Current can generally be detected as a peak in the surface temperature with a strong temperature decrease further offshore. The surface temperature difference across the Current is about 1°C at North West Cape, 2° to 3° at Fremantle and can be over 4° off Albany in the Great Australian Bight. The current frequently breaks out to sea, forming both clockwise and anti-clockwise eddies.
The Leeuwin Current is influenced by El Niño conditions, characterised by slightly lower sea temperatures along the Western Australian coast and a weaker Leeuwin Current, with corresponding effects upon rainfall patterns.
The existence of the current was first suggested by William Saville-Kent in 1897. Saville-Kent noted the presence of warm tropical water offshore in the Houtman Abrolhos, making the water there in winter much warmer than inshore at the adjacent coast. The existence of the current was confirmed over the years, but not characterised and named until Cresswell and Golding did so in the 1980s.

This is an excerpt from the article Leeuwin Current from the Wikipedia free encyclopedia. A list of authors is available at Wikipedia.
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La Niña forces unprecedented Leeuwin…
Unprecedented warm sea surface temperature (SST) anomalies were observed off the west coast of Australia in February–March 2011. Peak SST during a 2-week period ...
www.nature.com/srep/2013/130214/srep01277/full/srep01277.html
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Leeuwin Current - Wikipedia, the free encyclopedia
The Leeuwin Current is a warm ocean current which flows southwards near the western coast of Australia. It rounds Cape Leeuwin to enter the waters south of ...
en.wikipedia.org/wiki/Leeuwin_Current
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Natural history - Rottnest Island
This reef system is fed by the warm Leeuwin Current and provides a home to much of Rottnest's marine life, as well as presenting a significant hazard for ...
www.rottnestisland.com/about/rottnest-history/natural-history
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The Leeuwin Current - Perth Beachcombers Education Kit - wa.gov.au
Coral reefs at Rottnest Island… tropical fish off Perth's coast… this could only occur if the ocean's temperature was warm. This warm water is provided.
beachcombers-kit.fish.wa.gov.au/currents/the-leeuwin-current/
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Leeuwin current extended: Aviso
"Extended" Leeuwin Current as seen by drifting buoys (left; several of them were used to plot this map) and monthly Sea level anomalies, right, in July (austral ...
www.aviso.oceanobs.com/en/applications/ocean/large-scale-circulation/currents-around-the-world/leeuwin-current-extended.html
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Variability in the Leeuwin Current - Indian Ocean Climate Initiative
Variability in the Leeuwin. Current. Compiled by Charitha Pattiaratchi, Centre for Water Research, UWA. Climate Note 10/05 (August) in a series outlining ...
www.ioci.org.au/publications/doc_download/22-variability-in-the-leeuwin-current.html
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The Leeuwin Current - The Marine Climate Change
Feng, M., Weller, E. and Hill, K. (2009) The Leeuwin Current. In A Marine ... Summary: The Leeuwin Current (LC) is a warm, poleward flowing ocean boundary.
www.oceanclimatechange.org.au/content/images/uploads/Leeuwin_Current.pdf
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Leeuwin Current Birding
Aug 7, 2013 ... Report: This trip produced a fairly standard variety of species, however overall numbers were low, with the notable exception of Soft-plumaged ...
wabirdingblog.blogspot.com/
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The Biophysical Oceanography of the Leeuwin Current, a ... - PICES
the Leeuwin Current, a Poleward-. Flowing Eastern Boundary Current off the West Coast of Australia. Tony Koslow, Ming Feng. CSIRO Marine & Atmospheric  ...
www.pices.int/publications/presentations/PICES_15/Ann15_S1/S1_Koslow.pdf
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Forecast Help - Bureau of Meteorology
It turns east at Cape Leeuwin, where it is called the South Australian Current, and flows eastwards below most of South Australia to Tasmania, where it is known ...
www.bom.gov.au/oceanography/forecasts/forecast-help.shtml
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Leeuwin Current in science
Leeuwin current hots up in 'La Nina' year - University News - The ...
Jan 20, 2011 ... The La Nina phenomenon responsible for the devastating Queensland floods is also affecting Western Australia and will continue to do so until ...
Mapping the forming Leeuwin Current on the RV ... - University News
May 25, 2010 ... 15 May 2010. After a week at sea, our boutique team of 8 scientists have deployed 4 drifters in the Leeuwin Current and completed three ...
Leeuwin Current | Murdoch University
Feb 28, 2012 ... Welcome to Murdoch University, Perth, Western Australia. We're proud to have more than 18000 students and 1400 staff from all over the ...
On the factors influencing the development of sporadic upwelling in ...
Jul 23, 2013 ... On the factors influencing the development of sporadic upwelling in the Leeuwin Current system. Vincent Rossi1,; Ming Feng2,; Charitha ...
[PDF]The Leeuwin Current and its eddies: An introductory ... - ResearchGate
Jun 21, 2007 ... aSchool of Environmental Systems Engineering, University of Western ... The Leeuwin Current (LC) is an anomalous poleward-flowing eastern ...
Seasonal and interannual variations of the Leeuwin Current off ...
NOVA - University of Newcastle Research Online. ... Title: Seasonal and interannual variations of the Leeuwin Current off Western Australia ... The Leeuwin Current (LC) is an eastern boundary current flowing strongly southwards along the ...
“Teddies” and the Origin of the Leeuwin Current - AMS Journals ...
“Teddies” and the Origin of the Leeuwin Current. Doron Nof*. Department of Oceanography, The Florida State University, Tallahassee, Florida. Thierry Pichevin.
[PDF]''Teddies'' and the Origin of the Leeuwin Current - American ...
Sep 1, 2002 ... ''Teddies'' and the Origin of the Leeuwin Current. DORON NOF*. Department of Oceanography, The Florida State University, Tallahassee, ...
[PDF]The Biophysical Oceanography of the Leeuwin Current, a ... - PICES
Stephane Pesant. University of Western Australia ... Leeuwin Current: Poleward flowing E boundary ... Leeuwin Current seasonality. Flow strongest in late ...
Books on the term Leeuwin Current
Under Southern Seas: The Ecology of Australia's Rocky Reefs
Under Southern Seas: The Ecology of Australia's Rocky Reefs
Neil Andrew, 1999
The Ecology of Australia's Rocky Reefs Neil Andrew. Satellite image taken on 20 July 1997 by AVHRR instruments on a NOAA weather satellite showing the Leeuwin Current flowing down the Western Australian coast. Note the large eddies ...
Descriptive Physical Oceanography: An Introduction
Descriptive Physical Oceanography: An Introduction
Lynne D. Talley, George L. Pickard, William J. Emery, 2011
The Leeuwin Current is the eastern boundary current for the south Indian Ocean, and is located off Western Australia. The current was identified prior to 1969, but named only in 1980 following the start of intensive observations (Cresswell ...
Ocean Currents: A Derivative of the Encyclopedia of Ocean ...
Ocean Currents: A Derivative of the Encyclopedia of Ocean ...
John H. Steele, Steve A. Thorpe, Karl K. Turekian, 2010
Cresswell GR and Golding TJ (1980) Observations of a south-flowing current in the southeastern Indian Ocean. Deep-Sea Research 27A: 449--466. Cresswell GR and Griffin DA (2004) The Leeuwin Current, eddies and sub-Antarctic waters  ...
A Numerical Study of the Forcing Mechanisms of the Leeuwin Current System
A Numerical Study of the Forcing Mechanisms of the Leeuwin Current System
2012
To investigate the role of wind forcing, bottom topography and thermohaline gradients in the Leeuwin Current System (LCS), several experiments are conducted with a sigma coordinate primitive equation model on a beta-plane. Results show that the LCS is an anomalous eastern boundary current (EBC) that generates a coastal poleward current, an equatorw...
The Indian Ocean - A Perspective: Set of 2 Volumes
The Indian Ocean - A Perspective: Set of 2 Volumes
Rabin Sen Gupta, Erlich Desa, 2001
This is remarkable, since the Indian Ocean was subject to much historic exploration through navigators from Asia, India, the Middle East and lastly from Europe.
A Fine Resolution Model of the Leeuwin Current System off Western and Southern Australia
A Fine Resolution Model of the Leeuwin Current System off Western and Southern Australia
2012
To investigate the role of wind forcing, bottom topography and thermohaline gradients in the Leeuwin Current System (LCS) off western and southern Australia, several experiments are conducted with a sigma coordinate primitive equation model on a beta-plane. Results show that off the west (southern) coast the LCS is an anomalous eastern boundary cur...
Neritic Carbonate Sediments in a Temperate Realm: Southern ...
Neritic Carbonate Sediments in a Temperate Realm: Southern ...
Noel P. James, Yvonne Bone, 2010
2.3.5.5 Leeuwin Current System The western and southern margins of the continent are characterized by a unique series of strong warm shallow-water (
Descriptive Physical Oceanography, Sixth Edition: An Introduction
Descriptive Physical Oceanography, Sixth Edition: An Introduction
2011
The sixth edition of Descriptive Physical Oceanography provides an introduction to descriptive physical oceanography for advanced undergraduates and graduate students. The emphasis is on large-scale oceanography, based mainly in observations, with some topics from waves and coastal oceanography also included. Topics include the physical properties ...
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Leeuwin Current
Wind 'fights' Leeuwin to provide nutrient rich waters
Researchers investigating the Ningaloo Reef's circulation patterns have discovered that periodic, local wind-driven currents are still strong enough to generate upwelling, providing important nutrients from the seabed to the reef, despite strong suppression from the Leeuwin Current.
phys.org/news/2013-09-leeuwin-nutrient-rich.html
The Leeuwin Current – Cruising Section Topic Night 7.30pm on Thursday 20 June 2013, FSC Stateroom | S&S 34 Association
Posted on May 29, 2013 by Simon Torvaldsen.
www.ss34.org/index.php/2013/05/29/the-leeuwin-current-cruising-section-topic-night-7-30pm-on-thursday-20-june-2013-fsc-stateroom/
Leeuwin current hots up in 'La Nina' year | University News : University News : The University of Western Australia
www.news.uwa.edu.au/201101203229/international/leeuwin-current-hots-la-nina-year
Finding The Beauty In Everything: Western Australia's unique Leeuwin current
Cold currents flowing along the western edge of continents is the norm for all except Western Australia, where the warm Leeuwin Current, coming from the north between Australia and Indonesian archipelago flows down the west coast, forcing the cold current off shore. This benefits the terrestrial environment.
janinemarshall.blogspot.com/2012/11/western-australias-unique-leeuwin.html
Eddy-edge baroclinic instability, offshore from the Leeuwin Current |
Posted on December 13, 2011 by swotherspoon.
blogs.utas.edu.au/my-imas/2011/12/13/eddy-edge-baroclinic-instability-offshore-from-the-leeuwin-current/
Incorporation of larval fishes into a developing anti-cyclonic eddy of the Leeuwin Current off south-western Australia
plankt.oxfordjournals.org/content/33/11/1696.abstract
Penguinology: Little penguin colony viability impacted by Leeuwin current change
Sunday, 02 December 2012 Dr Cannell notes that one of the most important findings of the study was of the correlation between higher sea surface temperatures around April and reduced breeding performance. Image: WhatsallthisthenA RECENT study has found links between environmental conditions and breeding performance in a colony of Little Penguins (Eudyptula minor) near Rockingham.
penguinology.blogspot.com/2012/12/little-penguin-colony-viability.html
BGD - Abstract - Formation and maintenance of high-nitrate, low pH ...
www.biogeosciences-discuss.net/10/3951/
Leeuwin Current Cow | The Friggin Loon
The Leeuwin Current Cow has one of the best locations in the Cowparade, right under the Wonky Windmill at the Wonky Windmill Farm.... that will blow the methane clear. I don't know Loons, the only time fish looks good on a cow is when it's on my friggin plate !! Pretty Art Collective- Leeuwin Current
frigginloon.wordpress.com/2010/06/02/leeuwin-current-cow/
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