6380 22 archive 306 disk0/00/00/63/80 2008-05-19 01:08:07 2008-07-18 10:57:16 2008-07-16 17:23:18 article show N.Bindoff@utas.edu.au Mulhearn PJ Filloux JH Bindoff NL N.Bindoff@utas.edu.au Ferguson IJ pub 040503 260403 969902 770305 restricted © CSIRO 1988 restricted published by CSIRO A comparison is made of results for barotropic, surface and abyssal flows during the formation and passage of a warm-core ring in the East Australian Current. The barotropic velocities are estimated from sea-floor measurements of the horizontal electric field, which is induced by water motion. Values for the surface and near-bottom velocities are obtained generally by more traditional methods. A strong similarity is observed between the directions of the barotropic and surface flows. At a site close to the foot of the continental slope, the barotropic and near-bottom velocities are also similar, both in direction and magnitude. A possible explanation for this effect is that proximity to the coast constrains flow directions and causes the streamlines at depth to converge on the western (or near-shore) side of the warm-core ring. The determination of barotropic velocities enables barotropic volume transports to be estimated and compared with traditional geostrophic volume transports calculated for water motion between the surface and a depth of 1300 m. The barotropic transports are found to be greater than the geostrophic transports by a factor of approximately 1.6, indicating the significance of deep-water flow in the East Australian Current. 1988 published Australian Journal of Marine and Freshwater Research 39 6 697-707 10.1071/MF9880697 TRUE 1323-1650 http://dx.doi.org/10.1071/MF9880697 5241 4 6380 1 application/pdf en staffonly cc_utas

Mulhearn_Filloux_Lilley_Bindoff_1988.pdf

Mulhearn_Filloux_Lilley_Bindoff_1988.pdf 512838 http://eprints.utas.edu.au/6380/1/Mulhearn_Filloux_Lilley_Bindoff_1988.pdf