Alaska volcano erupts again, sends ash cloud over Aleutians

Eruption of Alaska volcano declines after shooting ash cloud up to 25,000 feet into air

Alaska volcano spews ash cloud high enough to draw weather service warning for pilots

The eruption of Augustine Volcano in Alaska nearly 20 years ago is stilll leading to new discoveries. The latest comes from graduate student researcher Valerie Wasser at the University of Alaska Fairbanks Geophysical Institute. She analyzed extremely small crystal clots, each polished to the thickness of a human hair or thinner, to determin that the addition of hot new magma into Augustine’s reservoir of cooler, older magma increased the pressure enough to trigger the 2006 eruption. Wasser’s ana