18 datasets found

Regularly in autumn, high precipitating events occur in southeastern France, leading sometimes to floods or flash-floods having a high societal impact. One of the...

It is now weIl recognized that the huge amounts of metal discharge from industrial emissions into the air, water and soils have no doubt resulted in the great impact...

The objective of this work is to identify and understand the importance of the various physical phenomena involved in the interaction between tyre and ice. On one...

Offshore structures constructed in polar regions are exposed to the drift of ice which generates dynamic loads at the ice-structure interface. The intensity and the...

L'influence de la méthode de préparation de la glace et de son histoire thermique sur la structure de sa surface a été mesurée a 77,15k en utilisant l'adsorption du...

L'objectif essentiel de ce travail est de déterminer les variations passées du CO2 atmosphérique à partir de l'analyse de l'air piégé dans la glace. Cette étude a été...

Many questions of glaciological interest can be recognized as inverse problems. In this thesis, l illustrate this point through three examples: * Reconstruction of...

The ice single crystal possesses a strong viscoplastic anisotropy, it deforms mainly by dislocation glide in the basal plane. A constitutive model for the single...

Interstitial air extracted from the firn at 4 polar sites has given access to air samples aging back to a hundred years in sufficient amount for isotopic analysis of...

The analysis of isotope ratios is of increasing importance to study the sources and sinks of atmospheric trace gases and to investigate their chemical reaction...

Les hydrocarbures légers non méthaniques (NMHC) ainsi que le monoxyde de carbone (CO) ont un rôle fondamental dans le bilan des espèces oxydantes tel que l'ozone et...

The ice flows by plastic deformation under gravity, and by sliding over the bedrock, when local temperature is close to the melting point. Mechanical test in...

Légende manuscrite sur le document original : "France : Bassin parisien : Vallée et Pays de la Loire : Anjou : La Loire près d'Angers. Poussée des blocs de glace...

Légende manuscrite sur le document original : "France : Bassin parisien : Vallée et Pays de la Loire : Anjou : La Loire gelée près d'Angers. Surface rappelant en petit...

Légende manuscrite sur le document original : "France : Bassin parisien : Vallée et Pays de la Loire : Anjou : Surface de la Loire gelée près d'Angers. Blocs, branches...

Légende manuscrite sur le document original : "France : Bassin parisien : Vallée et Pays de la Loire : Anjou : La Loire près d'Angers. Déferlement des blocs de glace...

It is now recognized that human activities , by the extent they have achieved since the industrial era, are likely to alter the Earth's climate (IPCC, 1996). Paleo...

Légende manuscrite sur le document original : "France : Bassin parisien : Paris : Paris. La Seine gelée 1868". Les plaques de verre déposées à Prodig datent de 1891 à...