Ocean Topography
Ocean Surface Topography from Space
Eddy Jason

click images for Latest  Latest El Niņo/La Niņa Jason Data


Jason 2 Jason 1

El Nino ending, La Nina beginning

Sea Lions aiding research into the ocean

La Nina
Sea Lions

Quote from REUTERS

Giant cold water eddy off Sydney lowers sea level

Wed Mar 14, 2007 5:52PM GMT

SYDNEY (Reuters) - Australian oceanographers have discovered a giant cold water eddy off Sydney which has lowered sea levels almost one meter and impacted a major ocean current.

The eddy, which has diameter of about 200 km (120 miles) and reaches to depth of 1 km (1,000 yards), lies about 100 km (60 miles) off Sydney, said Australia's peak scientific body, the Commonwealth Scientific and Industrial Research Organization (CSIRO).

The CSIRO said what had caused the giant eddy was a mystery. "What we do know is that this is a very powerful natural feature which tends to push everything else aside -- even the mighty East Australian Current," said CSIRO's David Griffin.

The sea surface has lowered by 70cm (27 inches) at its center, the CSIRO said in a statement received on Wednesday.


"Until 20 years ago we would not have known they (giant ocean eddies) even existed without accidentally steaming through them on a research vessel,

"However, now that we can routinely identify them from space via satellite, marine scientists can evaluate their role as a source of life in the marine ecosystem."

Ocean eddies can have a life of up to three weeks although similar eddies off South Australia and Western Australia are known to have survived several months, said the CSIRO.


[Home] [Satellite Imaging] [Space] [The SUN] [Planets & Asteroids] [Astronomy] [NASA and ESA] [How To] [News] [World Weather] [Australia Weather] [Tropical Cyclones] [Sea-Ice] [Oceans] [EarthQuake] [Tsunami] [Volcanology] [USGS- G.A]