Extreme value modelling of some glacial processes in Chilean Andes

Abstract : A glacier is a solid ice mass which is fed by solid water (snow, hail or hoarfrost), transforms this solid water in ice and restores it via steam (evaporation/sublimation) or via liquid (water drained by the runoff stream). Such gain and loss of mass is analyzed as a balance (or budget). We will analyze Guanaco glacier which is located in the IV region of Chile (29°S) in the semi-arid Andes, the mass balance measured using the glaciological method in the period 2002-2014 will be analyzed. For statistical modelling we applied Hill and t-Hill estimators from parametrized family of Harmonic mean estimators.The expected dependencies are visible by increase of variance of t-Hill in comparison with Hill estimator. We aim to better understand underlying mechanisms, which can improve the interpretability of data.
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Communication dans un congrès
International Conference on Risk Analysis, May 2015, Barcelona, Spain
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https://hal.archives-ouvertes.fr/hal-01168766
Contributeur : Stephane Girard <>
Soumis le : vendredi 26 juin 2015 - 14:58:04
Dernière modification le : dimanche 28 juin 2015 - 22:09:05

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  • HAL Id : hal-01168766, version 1

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Stephane Girard, Andres Rivera, Milan Stehlik, Sebastian Torres-Leiva. Extreme value modelling of some glacial processes in Chilean Andes. International Conference on Risk Analysis, May 2015, Barcelona, Spain. <hal-01168766>

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