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calderas

Satellite image of the island of Mayotte and its surrounding fringing reef
Posted inNews

New Volcano, Old Caldera

by Alka Tripathy-Lang 15 December 20206 September 2022

Researchers suggest a magma chamber sits within an old submarine caldera structure that extends into the mantle. Nearby, a new underwater volcano emerged with a flurry of seismicity.

Steamboat Geyser in Yellowstone National Park
Posted inNews

Are Geysers a Signal of Magma Intrusion Under Yellowstone?

Erik Klemetti, Science Writer by Erik Klemetti 29 May 202027 October 2021

Steamboat Geyser, the world’s tallest, is in the midst of one of its largest periods of activity. Is it linked to new magma intruding under the Yellowstone caldera?

An explosion from Kīlauea Volcano’s summit sends an ash plume into the sky on 27 May 2018.
Posted inResearch Spotlights

Fault Dips Figured in Kīlauea’s Caldera Collapse

by David Shultz 6 January 20206 October 2021

Large-volume volcanic eruptions can create instabilities in the ground above magma chambers, leading to massive collapses and telltale calderas.

An aerial view of the massive Katla glacier, which might be a bigger source of CO2 than previously estimated
Posted inResearch Spotlights

Volcano in Iceland Is One of the Largest Sources of Volcanic CO2

by Terri Cook 8 November 201815 November 2022

High-precision airborne measurements, in combination with atmospheric modeling, suggest that the Katla subglacial caldera may be one of the planet’s biggest sources of volcanic carbon dioxide.

Eruption of Shinmoedake on 27 January 2011
Posted inNews

Two Active Volcanoes in Japan May Share a Magma Source

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 31 July 20186 December 2021

Evidence collected following the 2011 eruption of Japan’s Shinmoedake volcano suggests that the powerful event affected the behavior of an active caldera nearby.

Laguna Caliente in Costa Rica
Posted inNews

Scientists Discover an Environment on the Cusp of Habitability

Katherine Kornei, Science Writer by Katherine Kornei 25 May 201824 February 2022

A volcanically heated Costa Rican lake hosts only one type of organism, suggesting that its Mars-like environment is just barely capable of supporting life.

Researchers use data from a network of buoys to visualize the undersea portion of Campi Flegrei caldera
Posted inResearch Spotlights

Visualizing One of the Most Hazardous Formations in Nature

by S. Witman 29 March 201817 November 2022

A network of buoys provides a first glimpse of the seafloor beneath a volatile Italian caldera.

Three-dimensional imaging unveils the dynamics inside an active volcano
Posted inResearch Spotlights

Looking Inside an Active Italian Volcano

by E. Underwood 17 November 201729 September 2022

Scientists use 3-D imaging to reveal Solfatara crater’s inner plumbing.

A new volcanic island, within other volcanoes of the South Pacific’s Tonga islands.
Posted inScience Updates

New Volcanic Island Unveils Explosive Past

by S. J. Cronin, M. Brenna, I. E. M. Smith, S. J. Barker, M. Tost, M. Ford, S. Tonga’onevai, T. Kula and R. Vaiomounga 26 June 20175 June 2023

A recent volcanic eruption near Tonga in the southwest Pacific created a new island, giving scientists a rare opportunity to explore the volcanic record of this remote region.

Researchers use zircon dating to unravel the processes behind the Toba supereruption.
Posted inResearch Spotlights

What Led to the Largest Volcanic Eruption in Human History?

by S. Witman 13 April 201716 March 2022

A mineral-dating project at the Toba caldera in Indonesia sheds light on the science of supereruptions.

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