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The kinetics of H2O vapor condensation and evaporation on different types of ice in the range 130-210 K

Publications associées (35)

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Following discoveries of blue ice areas in Greenland resembling meteorite-bearing blue ice fields in Antarctica, a surface search of several of the most promising sites was carried out in August 2003. The ice fields are located in Kong Christian X Land, in ...

2007

Cinétique de réaction hétérogène d'importance troposphérique sur des substrats modèles et sur des aérosols

Pascal Pratte

The first part of this study consists in the investigation of the evaporation and the condensation rate of H2O in the presence of different types of ice in a low pressure flow reactor. The second part of the present work reports the study of chlorine activ ...

EPFL2006

Gas age-ice age differences and the chronology of the Vostok ice core, 0-100 ka

Jérôme Chappellaz

This paper documents a larger degree of mixing in ice near the bottom of an ice sheet than described, or suspected, previously. It shows, thanks to favourable circumstances due to CO2 and CH4 production underneath the ice, that flow‐induced mixing within t ...

American Geophysical Union (AGU)2006

20th century trends and budget implications of chloroform and related tri-and dihalomethanes inferred from firn air

Jérôme Chappellaz, Daniele Romanini

In response to the 'oldest ice' challenge initiated by the International Partnerships in Ice Core Sciences (IPICS), new rapid-access drilling technologies through glacier ice need to be developed. These will provide the information needed to qualify potent ...

International Glaciological Society2006

This thesis presents the different steps in the development of a multiple diagnostic experimental setup and the results concerning the kinetics of condensation and evaporation of water over pure ice, as well as ice films doped with a known amount of atmosp ...

EPFL2004

A continuous record of temperature evolution over a sequence of Dansgaard-Oeschger events during Marine Isotopic Stage 4 (76 to 62 kyr BP)

Jérôme Chappellaz

Under present-day climatic conditions the air content of ice shows a high sensitivity to the atmospheric pressure and hence to the elevation at the surface of the ice sheet. This observation has been used to infer past ice sheet thickness variations of Ant ...

American Geophysical Union (AGU)2004

Relative timing of deglacial climate events in Antarctica and Greenland

Jérôme Chappellaz

To reconstruct fast atmospheric trace gas variations from polar ice cores it has to be considered that their amplitudes are attenuated during the enclosure process in the ice. Relevant processes for the attenuation are the molecular diffusion in the open p ...

American Geophysical Union (AGU)2002

Front propagation of ice slurry stratification processes

Didier Albert Simon Vuarnoz

The combined stratification and melting of ice particles of ice slurries is theoretically described by multi-component fluid dynamics and the continuous-properties model (CPM) for melting and freezing, applied only to melting. Ice particle stratification w ...

International Institute of Refrigeration IIR-IIF2002

A model to calculate dynamical and steady-state behavior of ice particles in ice slurry storage tank

Didier Albert Simon Vuarnoz

Storage of ice slurries is advantageous to save energy and to produce a continuous controlled long-time operation of an ice-slurry system. To guarantee homogeneous ice particle fields and to prevent a system of blocking by ice clusters, up-to-present a goo ...

International Institute of Refrigeration IIR-IIF2001

Real-Time Kinetic Measurements of the Condensation and Evaporation of D2O Molecules on Ice at 140 K < T < 220 K

Hubert van den Bergh, Michel Rossi

The kinetics of condensation of D218O water vapor on D216O ice was studied in the temp. range 140-220 K. The measurements have been performed in real time using the pulsed valve technique in a low-pressure flow reactor. Ice samples were prepd. by several d ...

1998