What are volcanic geodes?

IVESPA is a new observational database of independent eruption source parameters. It contains all parameters required to validate explosive eruptive column ... Some volcanic eruptions are explosive and others are not. The explosivity of an eruption depends on the composition of the magma. Considered by many to be the most active volcano on Earth, Stromboli has been erupting almost continuously for 2,000 years. The island's eruptions are almost ... 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 9, 2024 ... We are seeing changes in volcanic activity linked to past climate change. In Iceland, for example, volcanic eruption rates were 30 to 50 times higher than they ... Oct 5, 2016 ... Here we report a novel phenomenon of Ag nano-volcanic eruption that is caused by interactions between Ag and oxygen (O). It involves grain ... May 24, 2016 ... It found that geophysical disasters (volcanoes and earthquakes) cost $763 billion. Of these, 20% were volcanic, which puts the cost of volcanic ... Lightning is frequently observed in the eruption columns of large volcanoes, but it is rare in Hawaiian eruptions. Feb 28, 2019 ... A NASA-NOAA satellite confirmed Manaro Voui had the largest eruption of sulfur dioxide that year. The volcano injected 400,000 tons of sulfur ... Oct 30, 2023 ... The explosive eruption of the Hunga Tonga-Hunga Ha'apai (HTHH) volcano on 15 January 2022 injected more water vapor into the stratosphere ...