What is the Yellowstone caldera?

Learn more about Iceland's fascinating volcanic activity, from recent eruptions on the Reykjanes Peninsula and Fagradalsfjall to the history of active ... This report identifies key science questions, research and observation priorities, and approaches for building a volcano science community capable of tackling ... These eruptions can destroy lives and property. In the continental United States, the most recent and deadly volcanic eruption came on May 18, 1980, when Mt. St ... About Iceland's Latest Volcanic Activity ... The most recent eruption began on 1 April 2025 at Sundhnúksgígar, a row of craters in southwest Iceland. Soon after ... The idea that technology could mimic this volcanic cooling effect, known as Stratospheric Aerosol Injection (SAI), involves spraying sulfur dioxide or other ... May 24, 2024 ... Hunga Tonga-Hunga Ha'apai eruption triggered widespread deadly and damaging tsunami waves. A damaged boat washed up into the middle of a field ... What's it all mean? Volcanoes can lie dormant for centuries between eruptions, and the risk posed by volcanic activity is not always apparent. When Cascades ... Lightning is frequently observed in the eruption columns of large volcanoes, but it is rare in Hawaiian eruptions. Within 200 miles of the Matanuska-Susitna Borough there are four active volcanoes. Any one of these could have a major eruption. Sep 14, 2015 ... in Fe, Mg, Ca, Na, K; Rhyolitic magma -- SiO2 65-75%, low in Fe, Mg, Ca, high in K, Na ... At depth in the Earth nearly all magmas contain gas ...