2020 Volcanic Activity in Alaska—Summary of Events and Response of the Alaska Volcano Observatory

Scientific Investigations Report 2024-5004
The Alaska Volcano Observatory is a consortium between the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological & Geophysical Surveys
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The Alaska Volcano Observatory responded to eruptions, volcanic unrest or suspected unrest, increased seismicity, and other significant activity at nine volcanic centers in Alaska in 2020. The most notable volcanic activity in 2020 was an eruption of Shishaldin Volcano, which produced lava flows, lahars, and ash. Mount Cleveland had one small ash-producing eruption in June but was quiet thereafter. Other activity documented in 2020 consisted of elevated seismicity at the volcanoes Mount Veniaminof, Pavlof Volcano, Makushin Volcano, Atka volcanic complex (Korovin Volcano), Great Sitkin Volcano, and Semisopochnoi Island. Finally, the resuspension of ash deposited during the 1912 Novarupta-Katmai eruption was documented on three occasions.

Suggested Citation

Orr, T., Cameron, C., Dietterich, H., Loewen, M., Lopez, T., Lyons, J., Nakai, J., Power, J., Searcy, C., Tepp, G., and Waythomas, C., 2024, 2020 Volcanic activity in Alaska—Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2024–5004, 34 p., https://doi.org/10.3133/sir20245004.

ISSN: 2328-0328 (online)

Study Area

Table of Contents

  • Acknowledgments
  • Abstract
  • Introduction
  • Volcanic Activity in Alaska, East to West Along the Aleutian Arc
  • References Cited
  • Glossary of Selected Terms and Acronyms
Publication type Report
Publication Subtype USGS Numbered Series
Title 2020 Volcanic activity in Alaska—Summary of events and response of the Alaska Volcano Observatory
Series title Scientific Investigations Report
Series number 2024-5004
DOI 10.3133/sir20245004
Year Published 2024
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Volcano Science Center
Description vii, 34 p.
Country United States
State Alaska
Online Only (Y/N) Y
Google Analytic Metrics Metrics page
Additional publication details