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Tim R. Orr

Physical volcanology and eruption dynamics of basaltic volcanoes, principally Kīlauea volcano, Hawaii, and the Bering Sea Basalt Province, Alaska. Eruptive histories and hazards of Hawaiian and Alaska volcanoes.

My position as a Research Geologist at the Alaska Volcano Observatory focuses on fundamental research on eruption and flow field processes to understand hazards better and improve forecasts, first in Hawaiʻi and now in Alaska. My work entails observing and measuring eruptive activity as part of operational monitoring and through directed field studies to analyze the data collected to gain fundamental insights into eruptive phenomena in Hawaiʻi, Alaska, and worldwide. 

In addition, a fundamental part of my position is the monitoring of, and response to, volcanic unrest and eruptions. I serve as a 24/7 on-call duty scientist and duty remote sensor at AVO periodically throughout the year, and more often as needed during eruption crises, with primary responsibility for assessing volcanic activity daily and issuing hazard alerts. Because of my previous experience at the Hawaiian Volcano Observatory, I am also called upon to help with eruption response efforts in Hawaiʻi, when needed. 

*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government