2012 volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory

• DOI: 10.3133/sir20145160
• Publication Date: 2014-08-29T21:43:45Z
• Authors: Julie A. Herrick; Christina A. Neal; Cheryl E. Cameron; James P. Dixon; Robert G. McGimsey
• Keywords: Unrest; Phreatic; Phreatic eruption

The Alaska Volcano Observatory (AVO) responded to eruptions, possible volcanic unrest, or suspected unrest at 11 centers in during 2012. Of the two verified one (Cleveland) was clearly magmatic and other (Kanaga) most likely a single phreatic explosion. Two volcanoes had notable seismic swarms that probably were caused by intrusions (Iliamna Little Sitkin). For each period of clear AVO staff increased monitoring vigilance as needed, reviewed eruptive histories question help evaluate outcomes, shared observations interpretations with public. 2012 also 100th anniversary Alaska’s Katmai-Novarupta eruption 1912, largest on Earth 20th century important eruptions modern times. marked this occasion several public events.