Introduction -- Global distribution of active volcanoes / Elizabeth Cottrell -- Basaltic lava flow hazard / Andrew J. L. Harris -- Impacts from volanic ash fall / Thomas M. Wilson, Susanna Jenkins, ...

Emily Schwing: In 1912 a volcano in Alaska more than blew its top. Known as Novarupta, it was responsible for the most powerful volcanic eruption of the 20th century. Kristi Wallace: The reason we ...

A team is collecting data that will be used to create models that can help improve lava flow forecasting tools that are useful in determining how hazards impact populations. One such tool, known as ...

The Popocatépetl volcano, located southeast of Mexico City, stands as the second highest peak in Mexico and is considered to be one of the potentially most dangerous volcanoes in the world, given its ...

Regional map of the southeast portion of the Big Island of Hawai'i with elevation and bathymetry contours and surface fault traces (top panel). Cross‐section of the A‐A′ profile shown on top and ...

More than 120 volcanic eruptions have occurred in the United States in the 42 years since Mount St. Helens erupted over Washington in 1980, killing 57 and inflicting over a billion dollars in property ...

During volcanic crises, the USGS Hawaiian Volcano Observatory (HVO) plays a pivotal role, sharing information on activity and associated hazards with close partners on the Island of Hawaii, including ...

One of two main craters on Alaska's Mount Spurr, shown in 1991. Earthquake activity suggests the volcano is close to erupting again in 2025. R.G. McGimsey/Alaska Volcano Observatory/U.S. Geological ...