February 23, 2021. (Click HERE for wider, high-resolution view.) An Earth science satellite detected an illuminated plume spreading across Sicily during a night of heightened activity at the Italian volcano. At 1:37 a.m. local time (00:37 Universal Time) on February 23, 2021, the Visible Infrared Imaging Radiometer Suite (VIIRS) on […]

At some point in the future, Anak Krakatoa will erupt again, generating more tsunamis (Credit: The Wild Eyed/Shutterstock) The August 1883 eruption of Krakatoa was one of the deadliest volcanic explosions in modern history. The volcano, found in the middle of the Sunda Strait in between two of Indonesia’s largest […]

Shiveluch volcano has had more than 40 violent eruptions over the last 10,000 years. The last gigantic blast occurred in 1964, creating a new crater and covering an area of nearly 100 square kilometers with pyroclastic flows. But Shiveluch is actually currently erupting, as it has been for over 20 […]

Scientists identified flank instability at Pacaya, an active volcano in Guatemala. Credit: Kirsten Stephens/Penn State Landslides caused by the collapse of unstable volcanoes are one of the major dangers of volcanic eruptions. A method to detect long-term movements of these mountains using satellite images could help identify previously overlooked instability […]

Cleveland Volcano, Aleutian Islands eruption in 2006. Volcanism is one of the main carbon dioxide sources in the long-term carbon cycle balanced by weathering sinks, which, among others, represent important processes included in Komar and Zeebe’s model. Credit: NASA image courtesy Jeff Williams Predictions of future climate change require a […]

ANIMATION After two years of quiet, Kilauea, Hawaii’s youngest and most active volcano, is erupting again. In the early days of the volcano’s latest eruption, water that had pooled in the volcano’s summit crater (Halema‘uma‘u) since July 2019 was replaced by a lava lake. The water boiled off on December 20, 2020, […]

Plumes of volcanic gases produced during 2018 Kilauea eruption. Credit: Credit: Ryan Tabata The recent eruption activity on Kilauea has prompted renewed efforts by the University of Hawai’i at Mānoa’s Vog Measurement and Prediction (VMAP) Project. The team’s focus is to create forecasts of dispersion and trajectories of volcanic smog, […]

A 2019 eruption of Steamboat Geyser in the Norris Geyser Basin of Yellowstone National Park. The geyser’s first documented activity was in 1878, and it has turned off and on sporadically since, once going for 50 years without erupting. In 2018 it reactivated after a three-and-a-half-year hiatus, for reasons that […]