Professor Michael Manga is chair of Earth and Planetary Science at UC Berkeley – also home of the Berkeley Seismology Lab – in California, USA. He specializes in volcanic eruptions and geysers on Earth as well as other planets. His research has been recognized by a MacArthur Fellowship and election to the National Academy of Sciences.
Between 20 and 27 October 2012, a team of scientists recorded the activity of a geyser – dubbed "El Jefe" – at the El Tatio geothermal field in northern Chile, the largest geyser field in the southern hemisphere. As reported in the Journal of Volcanology and Geothermal Research in January 2015, over the six days of data collection and 3,531 eruptions monitored, the mean interval between eruptions of "El Jefe" was 132.2 seconds, with a standard deviation of just 2.4 seconds.