Hawaii’s mid-Pacific location makes it an excellent meeting ground for globally dispersed collaborators of all kinds. For the next two weeks, the U.S. Geological Survey’s Hawaiian Volcano Observatory will host scientists from New Zealand and Alaska who are funded in part by a joint U.S.-New Zealand Commission on Science and Technology Cooperation. The commission supports international partnerships to co-develop advances in research, science and technology. The scientists are here to focus on the impacts of three important and globally-relevant volcanic hazards: volcanic ash, volcanic gas and lava flows.
The team includes USGS Geologist Kristi Wallace from Alaska Volcano Observatory and her New Zealand counterparts — Graham Leonard from the Institute of Geological and Nuclear Sciences, Carol Stewart from Massey University and Tom Wilson from the University of Canterbury — all part of an international working group on volcanic ash.
The working group’s mission is to provide guidance to people, businesses and communities facing potential impacts from volcanic ash. They work in close cooperation with the International Volcanic Health Hazard Network to understand the impacts of ash on agriculture, infrastructure, water supplies and human health. Surprisingly, there is little rigorous documentation of the effects of ash on these critical aspects of human activities. The New Zealand government has made it possible for the team to travel to sites of recent explosive eruptions to study how people were impacted and how they coped.
New Zealand scientists in the working group have also conducted novel laboratory experiments to examine the impact of ash-fall on common electronics like computers and air-conditioning units. Imagine, for example, a desktop computer in an enclosed chamber. Now flip the switch and blast some gritty, abrasive, slightly acidic volcanic ash of varying concentrations into the chamber to see how well the hard drive, power supply and fan continue to function. (It turns out that they are surprisingly resilient.)
Even Kilauea and Mauna Loa have ash-producing eruptions from time to time, and the current activity at the summit of Kilauea occasionally sends small qualities of ash downwind. So, despite the team’s focus on recurring ash eruptions from charismatic stratovolcanoes such as Mount St. Helens, Hawaii and HVO will gain something from its efforts.
The second objective of this international team is to learn about the impacts of Kilauea Volcano’s June 27 lava flow and ongoing volcanic gas emissions on people, infrastructure and agriculture in Hawaii. As Puna residents know all too well, the June 27 lava flow buried a road, destroyed one house, partially inundated a new solid waste transfer station and threatened utility poles. Meanwhile at the summit of Kilauea, volcanic gas emissions continue to spread over the island and indeed the entire state.
The scientists are also interested in how people who call the Puna District home deal with the stresses related to living on one of the world’s most active volcanoes. The team will be meeting with representatives from business and government to gather insight into how communities and individuals cope with the threat of lava inundation.
Hawaii is a spectacular laboratory for studying the ways in which people try to live in harmony with volcanoes and other natural hazards. For two weeks, scientists will be looking for insight that they can share with other citizens of planet Earth who find themselves in similar situations.
You can find some of this information about impacts of volcanic ash on these web sites: gns.cri.nz/Home/Learning/Science-Topics/Volcanoes/Eruption-What-to-do/Ash-Impact-Posters, volcanoes.usgs.gov/ash and ivhhn.org.
Kilauea activity update
Kilauea’s summit lava lake level fluctuated over the past week, but remained well below the Overlook crater (vent) rim and out of view from Jaggar Museum Thursday morning, the lake was about 161 feet below the Overlook crater rim.
Kilauea’s East Rift Zone lava flow continues to feed widespread breakouts northeast of Puu Oo. The active flows remain within about 5 miles of Puu Oo.
One felt earthquake was reported on Hawaii Island of Hawaii in the past week. On May 31 at 11:59 a.m., a magnitude-3.6 earthquake occurred 8.9 miles southeast of Kilauea Summit at a depth of 5.5 miles.
Visit the HVO website at hvo.wr.usgs.gov for Kilauea daily eruption updates and other volcano status reports,.
Volcano Watch is a weekly article and activity update written by scientists at the U.S. Geological Survey’s Hawaiian Volcano Observatory.