eCite Digital Repository

Seals dive deep to solve cold water mystery


Williams, GD, Seals dive deep to solve cold water mystery, John Ross, The Australian Online, Australia, February 25, 2013, Online (2013) [Newspaper Article]


TASMANIAN researchers have solved a 30-year mystery after elephant seals helped them identify a source of Antarctic "bottom water". The extremely cold, dense water is crucial to the earth’s climate because it drives the ‘conveyor belt’ of ocean currents which move water between the equatorial and polar regions, distributing heat around the planet. Data from satellites, ocean moorings and tagged elephant seals helped the scientists pinpoint the new source at Cape Darnley in Australia’s Antarctic territory. Guy Williams, sea-ice specialist with the Hobart-based Antarctic Climate and Ecosystems Cooperative Research Centre, said the discovery – reported today in the journal Nature Geoscience – would add to the precision of global climate models. Dr Williams said three Antarctic sources had long been known. A fourth had been suspected following the 1970s discovery of oxygen-rich water in the deep ocean near Prydz bay, due south of India.

Item Details

Item Type:Newspaper Article
Keywords:seals, bottom water, Antarctica
Research Division:Earth Sciences
Research Group:Physical geography and environmental geoscience
Research Field:Glaciology
Objective Division:Environmental Policy, Climate Change and Natural Hazards
Objective Group:Understanding climate change
Objective Field:Effects of climate change on Antarctic and sub-Antarctic environments (excl. social impacts)
UTAS Author:Williams, GD (Associate Professor Guy Williams)
ID Code:88698
Year Published:2013
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2014-02-12
Last Modified:2014-02-12

Repository Staff Only: item control page