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  • Using speleothems to investigate rainfall history

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    Cet épisode fait partie du podcast Ressources pédagogiques en géographie

    • 24 Jan 2012 11:52:19
    • Russel Drysdale
    • 53 min
    • 112 Mo
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    How knowledge in paleoclimatology is used to understand the long-term patterns of drought? How do the paleoclimatologists proceed? What are the instrumental methods and how can we read and analyse climate record? The lecturer puts forth the hypothesis that modern speleothems record the patterns of rainfall change. Speleothems, as environmental archives, give information about past climate on rainfall history. The lecturer explains us the scientific approach to test the sensitivity of the caves with physical and chemical properties of drips water and describe the scientific instrumentation and the radiometric dating. The obtained results from the instrumental climate record could be an indicator for politic decision makers to manage water resources in the Sydney region and maybe anticipate special drought events. This lecture is given by Russell Drysdale from the University of Melbourne (second part).

    paleoclimatology, environnemental archives, paleoclimate, rainfalls history, caves, speleothems, water resources, drought, Australia

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