(BIVN) – This week Vulcan Watch In the article, the USGS Hawaiian Volcano Observatory offers hui hou to the “giant of volcanology,” retired University of Hawaii professor Bruce Houghton.
From Vulcan Watch article:
In 2025, Professor Bruce Houghton retired from the University of Hawaii at Manoa after 25 years as the Gordon A. McDonald Chair of Volcanology. He was only the second person to hold this post in the last half century. After his retirement, let’s reflect on a career that helped shape the way scientists understand explosive eruptions, volcanic hazards, and how people live around active volcanoes.
Houghton was born and educated in New Zealand and established himself as a leading volcanologist at the Institute of Geological and Nuclear Sciences (GNS) of New Zealand before joining the University of Hawaii in 2000. In Hawaii, he became not only a researcher and professor, but also the state volcanologist.
Much of Houghton’s scientific work has focused on a deceptively simple question: what can volcanic deposits tell us about the processes that created them? His answer: details matter. The textures and densities of erupted volcanic particles, their organization in volcanic sediments, and how they move through the atmosphere are not just measurements. They are key to understanding how magma rises, releases gas, interacts with the vent environment, and ultimately erupts.
Houghton also pioneered the use of high-speed, high-resolution imaging of active volcanoes to quantify eruptive processes at unprecedented spatial and temporal resolution. The impact of this work is reflected in his research output, which includes more than $8 million in research funding since 2000, 291 journal publications, and nearly 20,000 citations to his work.
His research challenged the popular belief that basaltic volcanoes such as Kilauea and Mauna Loa are relatively simple compared to explosive volcanoes in other parts of the world. Houghton showed that basaltic eruptions can exhibit a wide range of explosive behavior, from exceptionally weak bubble bursts to powerful explosive activity. Basaltic eruptions can change rapidly and reversibly across a spectrum of styles within a single event, from pulsating gas emissions and episodic bursts to Hawaiian fountains and more explosive eruptions. His work demonstrated that these changes often depend on processes in shallow conduits and the vent environment, not just the composition of the magma.
USGS: “Episode 49 of the Kīlauea Summit eruption at Halemaumau ended abruptly at 5:05 p.m. local standard time on June 14, after 7.5 hours of lava fountain activity from the northern vent. The final waning stage of the fountain activity lasted less than 5 minutes, during which the lava fountain fell below 60-80 meters (200-260 feet) at height. This photo highlights the final stages of the episode, during which low-level activity was interrupted by bursts of higher activity.” (USGS Photo by T. Paladino)
Houghton remained deeply connected to the volcanoes and communities of Hawaii. He worked closely with scientists at the USGS Hawaiian Volcano Observatory (HVO) and was involved in the scientific response to both the 2008–2018 summit lava lake eruption and the 2018 Kīlauea Lower East Rift Zone eruption. His influence extended far beyond his own research through the generations of students he taught: 17 doctoral students (PhD) at the University of Hawaii, four in New Zealand and two in Iceland, many of whom now work in universities, geological surveys, volcano observatories and emergency management organizations around the world. During the 2018 eruption, many former and current University of Hawaii students who studied under Houghton played important roles in the response, demonstrating the lasting impact of his commitment to education, mentorship and public service.
Houghton also refused to separate volcano science from the human world around it. He championed the idea that volcanic crises are not purely scientific events; the decisions of residents, emergency managers, planners and elected officials can greatly influence how communities experience volcanic hazards. Throughout his career, he advocated for greater collaboration among volcanologists, social scientists, emergency managers, and educators. As scientific director of the National Disaster Preparedness Training Center at the University of Hawaii, he helped develop training programs linking volcanic science to emergency preparedness and public safety.
The scientific community has recognized Houghton’s contributions with numerous awards. In 2017, he received the Thorarinsson Medal, the highest award in international volcanology. He was also elected a Fellow of the American Geophysical Union, the Geological Society of America and the Royal Society of New Zealand. In 2025, he was named the world’s second-ranked physical volcanologist based on publications, citations, awards, and influence. He was President of the Geological Society of New Zealand (at the age of 28!) and Deputy Secretary General of the International Association of Volcanologists.
Although Houghton left his job in Hawaii and returned to New Zealand, his ties to volcanology here remain strong. His ongoing collaborations, including studies of ongoing episodic lava eruptions at Kilauea, ensure that his influence extends far beyond his years at the University of Hawaii. As volcanic activity continues in Hawaii, many of the scientists, ideas, and approaches that shape our understanding of eruptions will continue to reflect the lasting influence of Bruce Houghton.