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First results of the Piton de la Fournaise STRAP 2015 experiment: multidisciplinary tracking of a volcanic gas and aerosol plume

Pierre Tulet ; Andrea Di Muro ; Aurélie Colomb ; Cyrielle Denjean ; Valentin Duflot ; Santiago Arellano (Institutionen för rymd- och geovetenskap, Optisk fjärranalys) ; Brice Foucart ; Jérome Brioude ; Karine Sellegri ; Aline Peltier ; Alessandro Aiuppa ; Christelle Barthe ; Chatrapatty Bhugwant ; Soline Bielli ; Patrice Boissier ; Guillaume Boudoire ; Thierry Bourrianne ; Christophe Brunet ; Fréderic Burnet ; Jean-Pierre Cammas ; Franck Gabarrot ; Bo Galle (Institutionen för rymd- och geovetenskap, Optisk fjärranalys) ; Gaetano Giudice ; Christian Guadagno ; Fréderic Jeamblu ; Philipp Kowalski ; Jimmy Leclair de Bellevue ; Nicolas Marquestaut ; Dominique Mékies ; Jean-Marc Metzger ; Joris Pianezze ; Thierry Portafaix ; Jean Sciare ; Arnaud Tournigand ; Nicolas Villeneuve
Atmospheric Chemistry and Physics Discussions (1680-7367). Vol. 17 (2016), 8, p. 5355-5378.
[Artikel, refereegranskad vetenskaplig]

The STRAP (Synergie Transdisciplinaire pour Répondre aux Aléas liés aux Panaches volcaniques) campaign was conducted in 2015 to investigate the volcanic plumes of Piton de La Fournaise (La Réunion, France). For the first time, measurements at the local (near the vent) and at the regional scales around the island were conducted. The STRAP 2015 campaign has become possible thanks to a strong cross-disciplinary collaboration between volcanologists and meteorologists. The main observations during four eruptive periods (85 days) are summarized. They include the estimates of SO2, CO2 and H2O emissions, the altitude of the plume at the vent and over different areas of La Réunion Island, the evolution of the SO2 concentration, the aerosol size distribution, and the aerosol extinction profile. A climatology of the volcanic plume dispersion is also reported. Simulations and measurements showed that the plume formed by weak eruption has a stronger interaction with the surface of the island. Strong SO2 and particles concentrations above 1000 ppb and 50 000 cm−3, respectively, are frequently measured over 20 km of distance from the Piton de la Fournaise. The measured aerosol size distribution shows the predominance of small particles in the volcanic plume. A particular emphasis is placed on the gas-particle conversion with several cases of strong nucleation of sulfuric acid observed within the plume and at the distal site of the Maïdo observatory. The STRAP 2015 campaign gave a unique set of multi-disciplinary data that can now be used by modellers to improve the numerical paramameterizations of the physical and chemical evolution of the volcanic plumes.



Denna post skapades 2017-01-19. Senast ändrad 2017-06-12.
CPL Pubid: 247432

 

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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Optisk fjärranalys (2010-2017)

Ämnesområden

Endogen geovetenskap
Exogen geovetenskap
Meteorologi och atmosfärforskning

Chalmers infrastruktur