Categorized | Featured, Sci-Tech, Volcano

Volcano Watch: International team visits Hawaii to study impacts of volcanic ash, volcanic gas and lava flows

Ashfall damages corn crop in Ecuador following an eruption of Tungurahua Volcano. Photograph courtesy Patricio Ramon,  Escuela Politécnica Nacional, Quito, Ecuador.

Ashfall damages corn crop in Ecuador following an eruption of Tungurahua Volcano. Photograph courtesy Patricio Ramon, Escuela Politécnica Nacional, Quito, Ecuador.

(Volcano Watch is a weekly article written by scientists at the U.S. Geological Survey’s Hawaiian Volcano Observatory.)

Hawai’i’s mid-Pacific location makes it an excellent meeting ground for globally dispersed collaborators of all kinds. For the next two weeks, the USGS Hawaiian Volcano Observatory (HVO) is honored to 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 very 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 very 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.)

A faint dusting of volcanic ash, produced by a small rockfall-triggered explosion in the Kīlauea summit lava lake on April 25, 2015, fell on this car parked near Jaggar Museum. Light rainfall afterward caused the ash to clump. USGS photo.

A faint dusting of volcanic ash, produced by a small rockfall-triggered explosion in the Kīlauea summit lava lake on April 25, 2015, fell on this car parked near Jaggar Museum. Light rainfall afterward caused the ash to clump. USGS photo.

Even Kīlauea and Mauna Loa have ash-producing eruptions from time to time, and the current activity at the summit of Kīlauea occasionally sends small qualities of ash downwind. So, despite the team’s focus on recurring ash eruptions from charismatic stratovolcanoes such as Mt. St. Helens, Hawai‘i and HVO will gain something from their efforts.

The second objective of this international team is to learn about the impacts of Kīlauea Volcano’s June 27th lava flow and ongoing volcanic gas emissions on people, infrastructure, and agriculture here in Hawai‘i. As Puna residents know all too well, the June 27th 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 Kīlauea, volcanic gas emissions continue to spread over the Island of Hawai‘i 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 insights into how communities and individuals cope with the threat of lava inundation.

Hawai‘i 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 insights 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:

www.gns.cri.nz/Home/Learning/S…
volcanoes.usgs.gov/ash/
www.ivhhn.org/

One Response to “Volcano Watch: International team visits Hawaii to study impacts of volcanic ash, volcanic gas and lava flows”

  1. Pua says:

    Vog is deadly to many living things, especially for us stuck on the Kona side of the Big Isle

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