Over the past few days, the Peruvian Geologic Survey (Ingemmet) has noted a sharp increase in seismicity underneath one of the more active volcanoes in the southern part of the country: Sabancaya.

Volcanic eruptions are dangerous and difficult to predict. A team at the University of Tokyo has found that the ratio of atoms in specific gases released from volcanic fumaroles (gaps in the Earth’s ...

IN view of the interest aroused by the activity of Kibo, after several groups of fumaroles had been located in its crater in 1942, it may be useful to give an account on further developments which ...

It was what mountaineers call a bluebird day -- bright sunshine and nearly unlimited visibility -- when Pearce Beissinger and a fellow volunteer member of Portland Mountain Rescue heard the call. They ...

A climber who had stopped to rest during an expedition on Mount Hood was rescued after falling into a snow-covered volcanic crevice. Caroline Sundbaum, 32, of Portland, Oregon, was climbing the ...

The National Park Service has designated the thermal features such as geysers and fumaroles at 16 national park sites as "significant," a label that affords them more stringent protections. Only one ...

When you think of Yellowstone National Park's famous Old Faithful geyser, you may think of its power, its size or even its reliability. But you probably don't think about where its water comes from.

The geothermal marvels and volcanic heritage that make Yellowstone National Park famous are starting to stir after lying dormant for 160,000 years. Research performed within the past few years ...

Volcanic eruptions are dangerous and difficult to predict. A team has found that the ratio of atoms in specific gases released from volcanic fumaroles (gaps in the Earth's surface) can provide an ...