Auteur: Servando de la Cruz-Reyna

About the Authors After a long career as a volcanologist with the US Geological Survey, John P. Lockwood now resides on the slopes of Mauna Loa volcano, Hawaii, where he is a geologic consultant and affiliate faculty at the University of Hawaii Hilo campus. Richard W. Hazlett is a USGS Research Associate, University of Hawaii Hilo affiliate and Professor Emeritus from Pomona College who has spent decades researching volcanic terrains throughout much of Europe, North America and the Pacific. Servando de la Cruz-Reyna is a Research Professor at the Institute of Geophysics of the University of Mexico (UNAM) and a founder member of the National Civil Protection System Advisory Scientific Committee for the active volcanoes of Mexico.