![Page 1: East Australian Current (the EAC). Where is it? EAC Properties Warm, deep, fast, nutrient poor water 100 km wide by 500km deep 30 million m 3 /s transport!](https://reader036.vdocuments.us/reader036/viewer/2022062407/56649d3f5503460f94a191c0/html5/thumbnails/1.jpg)
East Australian Current (the EAC)
![Page 2: East Australian Current (the EAC). Where is it? EAC Properties Warm, deep, fast, nutrient poor water 100 km wide by 500km deep 30 million m 3 /s transport!](https://reader036.vdocuments.us/reader036/viewer/2022062407/56649d3f5503460f94a191c0/html5/thumbnails/2.jpg)
Where is it?
![Page 3: East Australian Current (the EAC). Where is it? EAC Properties Warm, deep, fast, nutrient poor water 100 km wide by 500km deep 30 million m 3 /s transport!](https://reader036.vdocuments.us/reader036/viewer/2022062407/56649d3f5503460f94a191c0/html5/thumbnails/3.jpg)
EAC Properties• Warm, deep, fast, nutrient
poor water• 100 km wide by 500km deep• 30 million m3/s transport! • Well known for eddy
formation (can be 200km across!)
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Physical Description• Balance of Ekman wind-stress and coastal
friction (balance of wind curl and frictional vorticity)
• In S.H. : curl + or counterclockwise and friction vorticity – or clockwise
• Stommel- Coriolis term varies with latitude, strengthens W. Boundary EAC
• Surface EAC also strengthened (some) by deep->shallow shelf
![Page 5: East Australian Current (the EAC). Where is it? EAC Properties Warm, deep, fast, nutrient poor water 100 km wide by 500km deep 30 million m 3 /s transport!](https://reader036.vdocuments.us/reader036/viewer/2022062407/56649d3f5503460f94a191c0/html5/thumbnails/5.jpg)
![Page 6: East Australian Current (the EAC). Where is it? EAC Properties Warm, deep, fast, nutrient poor water 100 km wide by 500km deep 30 million m 3 /s transport!](https://reader036.vdocuments.us/reader036/viewer/2022062407/56649d3f5503460f94a191c0/html5/thumbnails/6.jpg)
Wind field response drives separation (not New Zealand or bottom topography
![Page 7: East Australian Current (the EAC). Where is it? EAC Properties Warm, deep, fast, nutrient poor water 100 km wide by 500km deep 30 million m 3 /s transport!](https://reader036.vdocuments.us/reader036/viewer/2022062407/56649d3f5503460f94a191c0/html5/thumbnails/7.jpg)
Eddies• Geostrophic balance: pressure balances coriolis• Cyclonic clockwise around low-pressure cells and counterclockwise (anticyclonic around high pressure cells) IN S.Hemis!
![Page 8: East Australian Current (the EAC). Where is it? EAC Properties Warm, deep, fast, nutrient poor water 100 km wide by 500km deep 30 million m 3 /s transport!](https://reader036.vdocuments.us/reader036/viewer/2022062407/56649d3f5503460f94a191c0/html5/thumbnails/8.jpg)
UpwellingW. coast of Aus doesn’t have wind-
driven upwellingInstead EAC “encroachment”
towards coast pushes up isopycnals
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References
M. Roughan, J.H. Middleton / Continental Shelf Research 22 (2002) 2551–2572K.R. Ridgway, J.R. Dunn / Progress in Oceanography 56 (2003) 189-222http://www.cmar.csiro.au/remotesensing/oceancurrents/http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=15366