Olgeir Sigmarsson - Centre de Recherches Volcanologiques and CNRS, Clermont-Ferrand, France
Michel Condomines - Centre de Recherches Volcanologiques and CNRS, Clermont-Ferrand, France
Karl Grönvold - Nordic Volcanological Institut and Science Institute, Reykjavik, Iceland
Thorvaldur Thordarson - Nordic Volcanological Institut and Science Institute, Reykjavik, Iceland