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'[TECH]:: NASA - Snapshot of past climate revelas n'
| " NASA
July 28, 2008
SNAPSHOT OF PAST CLIMATE REVEALS NO ICE IN ANTARCTICA
MILLIONS OF YEARS AGO
A snapshot of New Zealand's climate 40 million years ago
reveals a greenhouse Earth, with warmer seas and little or
no ice in Antarctica, according to research published this
week in the journal Geology.
The study suggests that Antarctica at that time was yet to
develop extensive ice sheets. Back then, New Zealand was
about 1100 km further south, at the same latitude as the
southern tip of South America – so was closer to
Antarctica – but the researchers found that the water
temperature was 23-25 degrees C at the sea surface and 11-13
degrees C at the bottom.
"This is too warm to be the Antarctic water we know today,"
said Dr Catherine (Cat) Burgess from Cardiff University's
School of Earth and Ocean Sciences, and lead-author of the
paper. "And the seawater chemistry shows there was little or
no ice on the planet."
Soon we'll be seeing pigs on ladders ...
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