R. S. J. Sparks
University of Bristol
E. S. Calder
Montserrat Volcano Observatory
B. Voight
Pennsylvania State University
Dario Delle Donne
Istituto Nazionale di Geofisica e Vulcanologia
Thea Hincks
University of Southampton
D.L. Pyle
University of Reading
Giorgio Lacanna
University of Florence
Silvio De Angelis
University of Liverpool
S. E. Ogburn
United States Geological Survey
T. H. Druitt
Expedition (United Kingdom)