Výsledky vyhledávání - "Laurent Janssens"

Segregation of solutes and gases in experimental freezing of dilute solutions: implications for natural glacial systems

Autor: Regi D. Lorrain, Jacque A. Killawee, Jean-Louis Tison, Ian J. Fairchild, Laurent Janssens

Publikováno v: Geochimica et Cosmochimica Acta. 62:3637-3655

Low ionic strength waters containing significant calcium and bicarbonate are common in nature, but little literature exists on their behaviour during freezing. Modelling indicates that freezing-induced concentration of solutes (in a closed-system) wo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a64d76a2a557e4b5ebf99dea8b2deac9
https://doi.org/10.1016/s0016-7037(98)00268-3

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Reconstruction of basal boundary conditions at the Greenland Ice Sheet margin from gas composition in the ice

Autor: Michèle Lemmens, Roland Souchez, Jean-Louis Tison, Laurent Janssens, Reginald Lorrain

Publikováno v: Earth and Planetary Science Letters. 118:327-333

Modelling the response of the Greenland Ice Sheet to a temperature increase is an essential step towards estimating the climatic changes that could affect a large area of the Northern Hemisphere in the near future and is heavily dependent on accurate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ed16b65aa603f5510a8f10b9ab4317e2
https://doi.org/10.1016/0012-821x(93)90176-a

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Very low oxygen concentration in basal ice from Summit, Central Greenland

Autor: Michèle Lemmens, Laurent Janssens, Bernhard Stauffer, Roland Souchez

Publikováno v: Souchez, R.; Janssens, L.; Lemmens, M.; Stauffer, B. (1995). Very low oxygen concentration in basal ice from Summit, Central Greenland. Geophysical Research Letters, 22(15), pp. 2001-2004. American Geophysical Union 10.1029/95GL01995

Oxygen concentration as low as 3% has been detected in the basal silty ice of the GRIP core. Such values were never observed in ice from ice sheets. They are most probably the consequence of organic matter oxidation in ice developed in a peaty deposi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc8fdcd978312abe87ff111af65e1539

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Stable isotopes in the basal silty ice preserved in the Greenland Ice Sheet at summit; environmental implications

Autor: Reginald Lorrain, Roland Souchez, Michèle Lemmens, Michel Stievenard, Arny E. Sveinbjörnsdottir, Sigfus J Johnsen, Laurent Janssens, Jean Jouzel, Jean-Louis Tison

Publikováno v: Geophysical Research Letters
Geophysical Research Letters, American Geophysical Union, 1994, 21 (8), pp.693-696. ⟨10.1029/94GL00641⟩

International audience; Modelling ice sheet behaviour in the context of climatic changes depends on initial and boundary conditions which can be better defined by studying the composition of basal ice. This study deals with basal ice reached by deep

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07faf630c21ec531d044944011aff1d5
https://hal.archives-ouvertes.fr/hal-03334842

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