First results of the Piton de la Fournaise STRAP 2015 experiment: multidisciplinary tracking of a volcanic gas and aerosol plume
Artikel i vetenskaplig tidskrift, 2016

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.

Författare

Pierre Tulet

Universite de La Reunion

A. Di Muro

Institut de Physique du Globe de Paris

Aurélie Colomb

Universite Blaise Pascal

Cyrielle Denjean

CNRM Centre National de Recherches Meteorologiques

Valentin Duflot

Universite de La Reunion

Santiago Arellano

Chalmers, Rymd- och geovetenskap, Optisk fjärranalys

Brice Foucart

Universite Blaise Pascal

Universite de La Reunion

J. Brioude

Universite de La Reunion

Karine Sellegri

Universite Blaise Pascal

A. Peltier

Institut de Physique du Globe de Paris

Alessandro Aiuppa

Universita degli Studi di Palermo

Istituto Nazionale di Geofisica e Vulcanologia

Christelle Barthe

Universite de La Reunion

Chatrapatty Bhugwant

ORA

Soline Bielli

Universite de La Reunion

Patrice Boissier

Institut de Physique du Globe de Paris

Guillaume Boudoire

Institut de Physique du Globe de Paris

Thierry Bourrianne

CNRM Centre National de Recherches Meteorologiques

Christophe Brunet

Institut de Physique du Globe de Paris

Fréderic Burnet

CNRM Centre National de Recherches Meteorologiques

Jean-Pierre Cammas

OSU-R

Universite de La Reunion

Franck Gabarrot

OSU-R

Bo Galle

Chalmers, Rymd- och geovetenskap, Optisk fjärranalys

G. Giudice

Istituto Nazionale di Geofisica e Vulcanologia

Christian Guadagno

ORA

Fréderic Jeamblu

Universite de La Reunion

Philipp Kowalski

Institut de Physique du Globe de Paris

Jimmy Leclair de Bellevue

Universite de La Reunion

Nicolas Marquestaut

OSU-R

Dominique Mékies

Universite de La Reunion

Jean-Marc Metzger

Universite de La Reunion

Joris Pianezze

Universite de La Reunion

Thierry Portafaix

Universite de La Reunion

Jean Sciare

Cyprus Institute

Arnaud Tournigand

ORA

N. Villeneuve

Institut de Physique du Globe de Paris

Atmospheric Chemistry and Physics

16807316 (ISSN) 16807324 (eISSN)

Vol. 17 8 5355-5378

Ämneskategorier

Meteorologi och atmosfärforskning

Multidisciplinär geovetenskap

Fundament

Grundläggande vetenskaper

DOI

10.5194/acp-17-5355-2017

Mer information

Senast uppdaterat

2018-04-11