Program Venue - Participants - Soirée - Accommodations - LOC

Outgassing processes

4th Villefranche-sur-Mer planetary science workshop

May 27-29, 2019

Citadelle de Villefranche-sur-Mer (France)

workshop outgassing

Organized by Observatoire de la Côte d'Azur (Nice, France) and INSU (CNRS),

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This workshop is aimed to promote discussions on the physics and the chemistry of outgassing processes (i.e., the removal of volatiles) in various domains, including planetary, material or technological sciences.
Outgassing processes have indeed a pivotal role in the budget of volatiles elements of planetary systems and their redox conditions, as well as in the development and maintenance of terrestrial planet atmospheres. By controlling the rheological and physicochemical properties, outgassing processes are also keys in a number of industry dealing with ceramic/composite materials, alloys/cast irons, glasses or liquid foods.
This workshop will present an overview of the fundamental physicochemical processes behind the nucleation and degassing, their thermodynamic and kinetic aspects. Gas chemistry from different settings will be also depicted through various analytical techniques.
In order to trigger off as much as possible exchanges and discussions and to foster possible collaborations, the workshop will gather a restricted number of invited colleagues from different fields (60 max).

There is no inscription fees for the workshop.

Coffee break, lunches in a restaurant on the sea
and tuesday night dinner cocktail
are offered.




Monday, May 27th

8:30 – 9:15 - Opening and coffee

9:15 – 9:30 - Welcome remarks

9:30 – 10:10 - Katarina Lodders (Wustl, Saint-Louis)  Gas and condensation chemistry in astronomical environments

10:10 – 10:50 - Hans Keppler (BGI, Bayreuth)  Volcanoes and the atmosphere

10:50 – 11:30 - Jean-Pierre Bellot (MinesNancy ARTEM) Metal refining. Evaporation under vacuum of metal vapors on the surface of a liquid bath

11:30 – 12:10 - Martin Rubin (Space, Bern)  Rosetta/ROSINA observations of comet 67P/Churyumov-Gerasimenko’s outgassing

12:30 – 14:00 - Lunch (Club de la Mer, Port de la Darse)

14:00 – 14:40 - Tristan Guillot (OCA, Nice) Hydrogen atmospheres of giant planets and super-Earths

14:40 – 15:20 - Razvan Caracas (ENS, Lyon) Hot dense gases and melts and the supercritical states

15:20 – 16:00 - Hélène Bureau (IMPMC, Paris) Deep degassing of rare and halogen gases-high pressure experimental approach

16:00 – 16:30 - Coffee break

16:30 – 17:10 - Giulio Ottonello (Univ. Genova, Italy) Solubility of volatiles in magmas

17:10 – 17:50 - Hélène Balcone-Boissard (ISTeP, UPMC) Petrological and geochemical tools for unravelling volcanic degassing  (flux and processes)

17:50 – 18:30 - Gabriel Tobie (LPG, Nantes) "Cryovolcanism and outgassing processes in icy worlds"

Tuesday, May 28th

9:00 – 9:40 - Xavier Noblin (INPHYNI, Nice) Outgassing in hydrogel

9:40 – 10:20 - Olivier Mousis (LAM, Marseille) Degassing/clathrate/ice in cometary systems

10:20 – 10:50 - Coffee break

10:50 – 11:30 - José Teixera (LLB, Paris) Water: thermodynamic and transport properties, structure and molecular dynamics.

11:30 – 12:10 - Raphael Vallon (Univ. Reims) Champagne degassing

12:30 – 14:00 - Lunch (Club de la Mer, Port de la Darse)

14:00 – 14:40 - Heidy Mader (SES, Bristol) Rheology/permeability of bubbly liquids - Numerical modelling and laboratory experiments.

14:40 – 15:20 - Fabrice Gaillard (ISTO, Orléans) Magma degassing and redox conditions

15:30 – 16:00 - Coffee break

16:00 – 16:40 - Hélène Massol (Geops, Paris) Dynamics of explosive eruptions

16:40 – 17:20 - Céline Hadji (LIPhy, Grenoble) Gas transfer through liquid membranes

17:20 – 18:00 - François Mear (UCCS, Lille) From waste glasses to foam glass for green application

19:00 – 22:00 - Buffet at the Citadelle

21:00 – 24:00 - Auditorium of the Citadelle Public conference and astronomical observations.

Wednesday, May 29th

9:00 – 9:40 - Jurgen Schmidt (University of Oulu, Chicago)  The eruption and degassing activity of Saturn's icy moon Enceladus

9:40 – 10:20 - Patrick Michel (OCA, Nice) Active asteroïds

10:20 – 10:50 - Coffee break

10:50 – 11:30 - Jérôme Aléon (MNHN, Paris) Isotopic fractionation upon evaporation: the case of (moderately) refractory elements

11:30 – 12:10 - James Faquhar (DoG, Maryland) Isotope evidence for gas phase sulfur chemistry and degassing at the time of solar system formation

12:30 – 14:00 - Lunch (Club de la Mer, Port de la Darse)

14:00 – 14:40 - Denis Andrault (LMV, Clermont-Ferrand) Great oxygenation event

14:40 – 15:20 - Laurent Truche (ISTerre, Grenoble) Hydrogen behavior in the crust: from mantle to surface degassing

15:20 – 16:00 - Evelyn Füri (CRPG, Nancy) Origin and evolution of volatiles on the Moon

16:00-16:30 - Coffee break

16:30– 17:10 - Michael Broadley (CRPG, Nancy) Cometary noble gases provide new insights into the origin and fate of volatile elements on Earth

17:10 – 17:50 - Bruce Fegley (Wustl, Saint-Louis) Chemistry of silicate vapor and steam atmospheres on the early Earth

17:50 – 18:00 - Concluding Remarks



The Workshop will be held in the Citadelle Saint Elme, the Town hall of Villefranche-sur-Mer.


 © Image :

See map for location :,7.3097898,279m/data=!3m1!1e3!4m5!3m4!1s0x0:0xbac80628a43ac495!8m2!3d43.7017234!4d7.3110416


amphi villefranche For the time of the workshop, the town hall of Villefranche puts at our disposal the room of the Auditorium (see attached) in which will be held the talks and the conference general public. The auditorium is sound and is equipped with wifi. Coffee breaks will be taken in the patio outside.




(to be completed)




Tuesday, May 28th 19 h - 22 h

 Cocktail dinner


For workshop attendees (and spouses/partners), enjoy the cocktail dinner on the patio of the Volti Museum (Citadelle St Elme) with a special champagne tasting.

Public evening

 Voyage au cœur d'une flûte de champagne

Télécharger l'affiche.

 Gérard Liger-Belair (Univ. Reims, France)

A 21 heures à l'auditorium de la Citadelle, Villefranche Sur Mer.

As part of social activities, an evening public event will be organized during the workshop. It will take place at the auditorium of the Citadelle and will be devoted to bubbles especially in Champagne.

MGC LOGO CompletV 01

On this occasion, the Domaine MAILLY Grand Cru will offer a champagne Grand Cru tasting party.
«Founded in 1929, the Domaine MAILLY Grand Cru, in the heart of the Montagne de REIMS vineyards, produces a wide range of champagnes, all of which are Grand Cru. The Brut Reserve, signature of the style of the house, elegantly assembles Pinot Noir (75%) and Chardonnay (25%) »

Look over your heads

Observation of the sky and stars with telescopes 22h-24h
with the help of Aquila the astronomy club de Nice



accomodations  accomodations2

A block of room has been kept for the workshop participants for the period May 27-29 at the following hotels :
La Darse :
Le Vauban :
La Régence :

Discount prices with the password : Workshop/CNRS/2730

Other possible hotels in Villefranche-sur-Mer are:

Welcome Hôtel :
Hôtel Versailles :
Hôtel La Flore :
Hôtel Patrcia :
Le Provençal :

For participants interested in lodging in Nice either during the workshop or to spend some time in the French Riviera, the city hall has a very convenient site to look for hotels and book on line (here:
You can click on the location menu to select hotels in different locations such as Nice-Port, Nice-Old Nice, Nice-Massena or Nice-Acropolis.

For those lodging in Nice, there are several buses and a regular train going to Villefranche from Nice that stop very close to the workshop venue (see map in the Venue)

Local Organizing Committee

Daniel Cordier
Groupe de Spectrométrie Moléculaire et Atmosphérique (UMR CNRS 7331), Reims
daniel.cordier (at)

Clément Ganino
Géoazur (UMR CNRS 7329), Observatoire de la Côte d’Azur, Nice Sophia-Antipolis
ganino (at)

Guy Libourel
Lagrange (UMR CNRS 7293), Observatoire de la Côte d’Azur, Nice
libou (at)

Franck Pigeonneau
CEMEF, Mines ParisTech
franck.pigeonneau (at)

Caroline Martel
ISTO (UMR CNRS 7327), Orléans
caroline.martel (at)

Gabriel Tobie
LPG (UMR CNRS 6112), Nantes
gabriel.tobie (at)

Denis Andrault
Laboratoire Magmas et Volcans, UMR 6524, Clermont-Ferrand
denis.andrault (at)