was published in 1951, and the 22nd volume, on New Zealand, in 1967. Awards Thorarinsson Medal, in honor of Sigurdur Thorarinsson (1912–1983) Wager Medal, in honor of Lawrence Wager (1904–1965) Fisher Medal, in honor of Richard V. Fisher (1928-2002) Krafft Medal, in honor of Katia Krafft (1942–1991) and Maurice Krafft (1946–1991) George Walker Awards, in honor of George P. L. Walker (1926–2005) Honorary Membership Wager medal The Wager medal is named for Professor Lawrence Wager of the University of Oxford, who died in 1965. The medal is given every two years to a 'mid-career' scientist, within 15 years of completion of their PhD. The award recognises individuals who have made outstanding contributions to volcanology, particularly in the eight-year period prior to the Award. Wager Medallists 1974 Franco Barberi 1974 J. Varet 1978 Steve Sparks 1987 Charlie Bacon 1993 Colin Wilson 1993 Claude Jaupart 1998 Giovanni Macedonio 1998 Jon Davidson 2002 Andrew Woods 2002 James Gardner 2004 Andy Harris 2004 Oleg Melnik 2008 Joachim Gottsmann 2008 Alessandro Aiuppa 2011 Amanda Clarke 2013 Antonio Costa 2013 Fidel Costa 2015 Tommaso Esposti Ongaro 2015 Mattia de’ Michieli Vitturi 2017 Marie Edmonds 2017 Yan Lavallée 2019 Madeleine Humphreys 2023 Susanna Jenkins 2023 Yves Moussallam Fisher medal The Fisher Medal is named for Richard V. Fisher of the University of California Santa Barbara, who died in 2002, in Santa Barbara, California. The medal is given every 4 years to a scientist who has made outstanding contributions to volcanology based primarily upon field observations. Fisher medallists 2017 José Luis Macias Vasquez Krafft medal The Krafft Medal is named for Katia and Maurice Krafft who were killed while filming on Mount Unzen, Japan in 1991. The Krafft Medal is awarded every 4 years to an individual who has made outstanding contributions to volcanology through service to the scientific community or to communities threatened by volcanic activity. Krafft medallists 2004 Tom Simkin 2008 Christopher G. Newhall 2013 Shigeo Aramaki 2017 Hugo Delgado Granados 2017 Marta Calvache George Walker award The George Walker award is named for GPL Walker, who died in 2005. The award is given every two years to a scientist who is within 7 years of Ph.D. completion, and recognizes the achievements of a recent outstanding graduate in volcanology, or a recent graduate whose achievements in volcanology involved operating in difficult circumstances. George Walker awardees 2004 Costanza Bonadonna 2008 Diana C. Roman 2008 Fukashi Maeno 2011