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Publications associées (39)

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Search for relativistic magnetic monopoles with IceCube

Matthias Wolf, Shirit Cohen, Mathieu Ribordy, Xiaoxia Bai

We present the first results in the search for relativistic magnetic monopoles with the IceCube detector, a subsurface neutrino telescope located in the South Polar ice cap containing a volume of 1 km(3). This analysis searches data taken on the partially ...

Amer Physical Soc2013

Where to find 1.5 million yr old ice for the IPICS "Oldest-Ice" ice core

Jérôme Chappellaz

The recovery of a 1.5 million yr long ice core from Antarctica represents a keystone of our understanding of Quaternary climate, the progression of glaciation over this time period and the role of greenhouse gas cycles in this progression. Here we tackle t ...

Copernicus GmbH2013

Evaluation of biospheric components in earth system models using modern and palaeo-observations: The state-of-the-art

Jérôme Chappellaz

We investigate for the first time the loss and alteration of past atmospheric information from air trapping mechanisms under low-accumulation conditions through continuous CH4 (and CO) measurements. Methane concentration changes were measured over the Dans ...

Copernicus GmbH2013

Low ice crystal concentration and sustained in-cloud supersaturation, commonly found in cloud observations at low temperature, challenge our understanding of cirrus formation. Heterogeneous freezing from effloresced ammonium sulfate, glassy aerosol, dust a ...

2011

Synchronising EDML and NorthGRIP ice cores using δ18O of atmospheric oxygen (δ18Oatm) and CH4 measurements over MIS5 (80-123 kyr)

Jérôme Chappellaz

An ice core air content record that was recovered from the refrozen-recrystallization ice formation zone in the Dasuopu Glacier was investigated in this work, which showed that the air content in ice performed significant fluctuations both in the seasonal ...

Elsevier BV2010

Cold storage with ice slurries

Didier Albert Simon Vuarnoz

The storage of 'cold' with ice slurries-a special type of thermally multi-functional fluids or phase change slurries (PCS)-is discussed. At first an example of a calculation of a thermal energy storage tank in an ice slurry system with a peak load demand i ...

2008

Results from the Greenland search for meteorites expedition

Anders Meibom

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

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The kinetics of condensation (kc) and the evaporation flux (J(ev)) of H2O on ice were studied in the range 130-210 K using pulsed-valve and steady-state techniques in a low-pressure flow reactor. The uptake coefficient gamma was measured for different type ...

American Chemical Society2006

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