What are lava flows?

A volcanic eruption is when gas and/or lava are released from a volcano—sometimes explosively. Volcanoes provide a number of environmental benefits, for example ... May 23, 2024 ... The global economic impact could reach $1.6 trn over a five-year period, calculated as the average of three potential severity levels. Volcanoes: More than 500 volcanic vents have been identified in the State of California. At least 76 of these vents have erupted, some repeatedly, ... Within 200 miles of the Matanuska-Susitna Borough there are four active volcanoes. Any one of these could have a major eruption. May 2, 2022 ... The Thera eruption hunt continues. Archaeological evidence has suggested the date of the Thera eruption is closer to 1500 B.C., while some ... Jul 8, 2015 ... researchers say there were two eruptions—one in 535 or 536 in the northern hemisphere and another in 539 or 540 in the tropics—that kept ... Oct 23, 2024 ... Volcanic eruptions are often discussed in the context of climate change because they release CO2 and other gases into our atmosphere. 45 volcanoes were in continuing eruption status as of 21 February 2025. An eruption marked as continuing does not always mean persistent daily activity. Feb 28, 2005 ... The eruption produced high-speed avalanches of hot ash and gas, giant mudflows, and a cloud of volcanic ash hundreds of miles across. Volcanic eruptions can be explosive, sending ash, gas and lava high up into the atmosphere, or the magma can form lava flows, known as effusive eruptions.