Exploring eruptions: Research on volcanoes could one day help save lives

Feb 15, 2012 By Dana Yates
John Lyons near a microseismicity station located below Antisana volcano, in Ecuador. Cara Shonsey photo

Geology takes the long view. It is a field, after all, in which the pace of change spans billions of years. John Lyons, however, is interested in geological events that happen at a faster rate. So the recent graduate of Michigan Tech’s PhD program in geophysics has found a compromise: he studies volcanoes.

compress geologic time. You can sometimes see birth and destruction at an almost human timescale,” says Lyons, who is now doing postdoctoral work at the Instituto Geofisico–Escuela Politécnica Nacional in Quito, Ecuador.

It’s an apt setting for Lyons; the small, South American country is home to a number of the world’s most active volcanoes. In 2006, for example, at least seven people were killed and three villages were demolished following the eruption of Tungurahua (“Throat of Fire”), located eighty miles southeast of Quito.

In the future, as more people worldwide live on the flanks of active volcanoes, and in the valleys surrounding them, the risk of death and destruction will increase. That’s why Lyons is investigating volcanoes’ eruptive behavior and the internal systems that feed their geothermal power.

Specifically, Lyons uses sophisticated instruments, which sense ground motion near volcanic sites, to detect the movement of gas and magma beneath the Earth. The resulting information, which Lyons analyzes out of harm’s way, is then compared to satellite data that shows gas and thermal emissions at the planet’s surface.

The goal: to understand the characteristic signals that volcanoes produce during different stages of activity. Ultimately, this knowledge could be used to identify abnormal events and help forecast eruptions.

Ecuador, though, isn’t the only place where Lyons has put his expertise to work. During summer 2010, just months after the devastating earthquake and tsunami in Japan, he worked with Professor Mie Ichihara of the Earthquake Research Institute at the University of Tokyo.

There, through the National Science Foundation’s East Asia and Pacific Summer Institutes program, Lyons built a model of a volcanic conduit, complete with magma-like fluid (albeit at room temperature). Using the model, the researchers were able to generate the same tremor signals that had been recorded earlier at Guatemala’s Volcán de Fuego ("Volcano of Fire")—data that hadn’t been explained by other geophysicists.

While in Japan, Lyons also visited communities affected by the tsunami. “It was a sobering reminder that, while Earth science, geophysics, and natural hazard studies have made incredible advances in the past century, there is still a great deal that we don't know about how the Earth works. We have lots of work to do,” he says.

Explore further: Earthquakes occur in 4 parts of Alaska

add to favorites email to friend print save as pdf

Related Stories

Australian volcano eruptions overdue, new study confirms

Jul 05, 2011

(PhysOrg.com) -- Latest research into the age of volcanos in Western Victoria and South Australia has confirmed that the regions are overdue for an eruption, potentially affecting thousands of local residents.

Rare melt key to 'Ring of Fire'

Oct 07, 2010

(PhysOrg.com) -- Oxford University scientists have discovered the explanation for why the world?s explosive volcanoes are confined to bands only a few tens of kilometres wide, such as those along the Pacific ...

Tracking a hot spot

May 17, 2007

Using a state-of-the-art satellite imagery technique, researchers are able to more precisely predict volcanic activity, bringing them steps closer to understanding where an eruption may occur. A new research study, titled ...

Recommended for you

User comments : 0