“We were pretty much on 24/7 vigilance,” said Mangan, the longtime scientist-in-charge of the U.S. Geological Survey’s California Volcano Observatory. Advertisement“Most people are surprised that there are any volcanoes in California,” said Kari Cooper, a geologist at UC Davis. Margaret Mangan, wearing protective gear, collects lava samples during a 1993 eruption of Mt. Mangan proposed bringing them all together under a unified California Volcano Observatory, and she took charge when CalVO opened in 2012. Volcanic ash can contaminate water and damage hydroelectric turbines.

Source: Los Angeles Times November 30, 2019 13:52 UTC