5005 to 5016 of 13838 results
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The residence time of Southern Ocean surface waters and the 100,000-year ice age cycle
Read more of: The residence time of Southern Ocean surface waters and the 100,000-year ice age cycleFrom 1.25 million to 700,000 years ago, the ice age cycle deepened and lengthened from 41,000- to 100,000-year periodicity, a transition that remains unexplained. Using surface- and bottom-dwelling foraminifera from […]
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Recent measurements of Antarctic ozone depletion
Read more of: Recent measurements of Antarctic ozone depletionMeasurements of total ozone at Halley Bay, Antarctica, are presented for the six most recent observing seasons, 1980‐86, showing the consistency and progress of the spring ozone depletion. The principal […]
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Emperors on thin ice: three years of breeding failure at Halley Bay
Read more of: Emperors on thin ice: three years of breeding failure at Halley BaySatellite imagery is used to show that the world’s second largest emperor penguin colony, at Halley Bay, has suffered three years of almost total breeding failure. Although, like all emperor […]
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Growth rings in Cretacous and Tertiary wood from Antarctica and their palaeoclimatic implications
Read more of: Growth rings in Cretacous and Tertiary wood from Antarctica and their palaeoclimatic implicationsAlthough the Antarctic Peninsula now has a glacial climate, during the Cretaceous and early Tertiary it was sufficiently warm for forests to thrive, even at palaeolatitudes of 59°-62° S. The […]
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Effectiveness of the RMT8 system for sampling krill (Euphausia superba) swarms
Read more of: Effectiveness of the RMT8 system for sampling krill (Euphausia superba) swarmsThe effectiveness of the Rectangular Midwater Trawl (RMT) for sampling krill swarms was studied by observing the behaviour of swarms in the vicinity of the net using echosounders. Large scale […]