An international team of researchers spent time on Mount Edgecumbe searching for low levels of CO2 that might have come through the soil from the rising magma below.
ANCHORAGE, Alaska - In May 2022, a series of small earthquakes rumbled near Mount Edgecumbe. Geophysicists think those earthquakes were due to the ground around Mount Edgecumbe lifting slightly because the magma underneath it is pushing toward the surface.
Last week, an international research team, including scientists with the University of Alaska Fairbanks Geophysical Institute, were on Kruzof Island. “We’re down here to do some gas measurements,” said Claire Puleio, Ph.D., volcanology student. “So we’re looking for diffuse CO2, which is really low levels of CO2 and we’re measuring, kind of, all over the island, Kruzof Island, as well as on Edgecumbe summit itself.
The team is collecting samples that will be sent off for a carbon isotope analysis, which will be able to tell them the source of the CO2. “It’s all in response to that activity that we noticed about a year ago, that kind of pointed to some inflation and seismicity that began in about 2018,” Puleio said.“We’ve gone back to those areas to see if we see the same bubbling,” Puleio said. “And we have found that bubbling that they saw, which is really great, really exciting for us. And we’re taking some samples of some of that bubbling that we’ve seen to see if it is magmatic or not.
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