Patagonian glacier yields clues for improved understanding of global climate change

Although ice cores obtained from Antarctica have now provided more than 800 000 years` worth of climate records, analysis of them alone is insufficient for understanding the history of climatic interactions between the diverse regions of the world. Boreholes drilled during the 1990s on six glaciers in the tropical zone of the Andean Cordillera gave rise to a substantial collection of data on the changes and developments of the tropical climate of the Southern Hemisphere.

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