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.
Professional Experience
Research Geologist, USGS Alaska Volcano Observatory, June 2017–Present
Research Geologist, USGS Hawaiian Volcano Observatory, May 2016–June 2017
Operational Geologist, USGS Hawaiian Volcano Observatory, June 2005–May 2016
Physical Science Technician, University of Hawaiʻi at Hilo, November 2002–June 2005
Education and Certifications
University of Hawaii at Manoa, PH.D. (2015) – Geology and Geophysics
Northern Arizona University, M.S. (1997) – Geology
University of Montana, B.A. (1995) – Geology
University of Montana, B.A. (1993) – Geography
Affiliations and Memberships*
American Geophysical Union
Geological Society of America
International Association of Volcanology and Chemistry of the Earth’s Interior
Science and Products
Communication strategy of the U.S. Geological Survey Hawaiian Volcano Observatory during the lava-flow crisis of 2014–2015, Kilauea Volcano, Hawaii Communication strategy of the U.S. Geological Survey Hawaiian Volcano Observatory during the lava-flow crisis of 2014–2015, Kilauea Volcano, Hawaii
Lava lake thermal pattern classification using self organizing maps and relationships to eruption processes at Kilauea Volcano, Hawaii Lava lake thermal pattern classification using self organizing maps and relationships to eruption processes at Kilauea Volcano, Hawaii
Controls on lava lake level at Halema‘uma‘u Crater, Kīlauea Volcano Controls on lava lake level at Halema‘uma‘u Crater, Kīlauea Volcano
The 2018 rift eruption and summit collapse of Kilauea Volcano The 2018 rift eruption and summit collapse of Kilauea Volcano
Eruption and fountaining dynamics of selected 1985–1986 high fountaining episodes at Kīlauea volcano, Hawai'i, from quantitative vesicle microtexture analysis Eruption and fountaining dynamics of selected 1985–1986 high fountaining episodes at Kīlauea volcano, Hawai'i, from quantitative vesicle microtexture analysis
The Puʻu ʻŌʻō eruption of Kīlauea Volcano, Hawai‘i—Episode 21 through early episode 48, June 1984–April 1987 The Puʻu ʻŌʻō eruption of Kīlauea Volcano, Hawai‘i—Episode 21 through early episode 48, June 1984–April 1987
Science and Products
Communication strategy of the U.S. Geological Survey Hawaiian Volcano Observatory during the lava-flow crisis of 2014–2015, Kilauea Volcano, Hawaii Communication strategy of the U.S. Geological Survey Hawaiian Volcano Observatory during the lava-flow crisis of 2014–2015, Kilauea Volcano, Hawaii
Lava lake thermal pattern classification using self organizing maps and relationships to eruption processes at Kilauea Volcano, Hawaii Lava lake thermal pattern classification using self organizing maps and relationships to eruption processes at Kilauea Volcano, Hawaii
Controls on lava lake level at Halema‘uma‘u Crater, Kīlauea Volcano Controls on lava lake level at Halema‘uma‘u Crater, Kīlauea Volcano
The 2018 rift eruption and summit collapse of Kilauea Volcano The 2018 rift eruption and summit collapse of Kilauea Volcano
Eruption and fountaining dynamics of selected 1985–1986 high fountaining episodes at Kīlauea volcano, Hawai'i, from quantitative vesicle microtexture analysis Eruption and fountaining dynamics of selected 1985–1986 high fountaining episodes at Kīlauea volcano, Hawai'i, from quantitative vesicle microtexture analysis
The Puʻu ʻŌʻō eruption of Kīlauea Volcano, Hawai‘i—Episode 21 through early episode 48, June 1984–April 1987 The Puʻu ʻŌʻō eruption of Kīlauea Volcano, Hawai‘i—Episode 21 through early episode 48, June 1984–April 1987
*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