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Het Open Marien Archief van België (OMA) biedt vrije toegang tot de digitale publicaties over de Vlaamse kust en het Belgisch deel van de Noordzee, en alle andere mariene, estuariene en kustgebonden publicaties van Belgische auteurs en wetenschappers en van buitenlandse wetenschappers geaffilieerd aan een Belgische instelling.

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Ice sheets and sea level change as a response to climatic change at the astronomical time scale
Berger, A.; Fichefet, T.; Gallée, H.; Marsiat, I.; Tricot, Ch.; van Ypersele, J.P. (1990). Ice sheets and sea level change as a response to climatic change at the astronomical time scale, in: Paepe, R. et al. Greenhouse Effect, Sea Level and Drought. Proceedings of the NATO Advanced Research Workshop on Geohydrological Management of Sea Level and Mitigation of Drought, Fuerteventura, Canary Islands (Spain), March 1-7, 1989. NATO ASI Series C: Mathematical and Physical Sciences, 325: pp. 85-107. http://dx.doi.org/10.1007/978-94-009-0701-0_5
In: Paepe, R. et al. (Ed.) (1990). Greenhouse Effect, Sea Level and Drought. Proceedings of the NATO Advanced Research Workshop on Geohydrological Management of Sea Level and Mitigation of Drought, Fuerteventura, Canary Islands (Spain), March 1-7, 1989. Digitized reprint of the hardcover 1st edition 1990. NATO ASI Series C: Mathematical and Physical Sciences, 325. Kluwer Academic Publishers: Dordrecht. ISBN 978-94-009-0701-0. xix, 718 pp. http://dx.doi.org/10.1007/978-94-009-0701-0, meer
In: NATO ASI Series C: Mathematical and Physical Sciences. D. Reidel: Dordrecht; Boston; Lancaster. ISSN 0258-2023, meer

Beschikbaar in  Auteurs 
Documenttype: Congresbijdrage

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    Marien/Kust

Auteurs  Top 
  • Marsiat, I.
  • Tricot, Ch.
  • van Ypersele, J.P., meer

Abstract
    Understanding how and why global climate is changing is investigated at the astronomical time scale related to the glacial-interglacial cycles of the Quaternary Ice Age.A 2-dimensional physical model taking into account the coupling between the atmosphere, the upper ocean, the sea-ice, the ice-sheets and the continental surfaces has been forced by the long-term variations of the insolation induced by the astronomical changes in the elements of the Earth’s orbit. The low frequency part of the ice volume and sea-level changes have been correctly reproduced in agreement with the deep sea and ice cores records and with the climatic reconstructions made from multiple geological observations. However, after 6 kyr BP, the remaining ice volume of the Greenland and northern American ice sheets is overestimated in the simulation, probably because of the absence of an interactive carbon cycle providing a time-dependent atmospheric CO2 concentration.Extrapolation has been made for the next 100,000 years assuming no human interference at this time scale: the next ice age is expected to occur before 60,000 years AP, the cooling rate between now and then being roughly 0.01 °C per century. The maximum amount of ice to be expected in the northern hemisphere is 27*106 km3 representing a 70 m sea-level drop in 55,000 years, i.e. slightly more than 12 cm per century in average.

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