What are the origins and dynamics of hot spot volcanoes?

Oct 23, 2018 ... The Mariana back-arc eruption was first discovered in December of 2015 by cameras aboard an autonomous underwater vehicle, Sentry. Photos ... A volcano eruption happens when magma below the surface rises to the top of the mountain, causing gas and bubbles to appear. Pressure from this gas can build so ... Jan 19, 2017 ... The world's 10 most devastating volcanic eruptions · 1. Mt Tambora, Indonesia, 1815 (VEI 7) · 2. Krakatoa, Indonesia, 1883 (VEI 6) · 3. Laki, ... In spring 1902, Mt. Pelée began waking up. First, a small eruption. Then, intensifying signs of subterranean rumbling: groundwater disturbances, mudslides, ... Mar 12, 2025 ... A 2025 volcanic eruption at Mount Spurr near Anchorage is “likely” according to a new bulletin by the Alaska Volcano Observatory. The timing of ... Volcanic eruptions may be subtle or explosive and can produce dangerous lava flows, poisonous gases, and flying rocks and ash. May 17, 2019 ... Did a Volcanic Eruption in 1783 Change the Climate in Europe? A new model of the Laki eruption in Iceland suggests that normal climate ... Sep 9, 2021 ... The increased cloud cover enhances the cooling of volcanic aerosols, which forms a positive feedback that decreases regional temperature. For ... This episodic eruption is occurring within a closed area of Hawaiʻi Volcanoes National Park. High levels of volcanic gas—primarily water vapor (H2O), carbon ... Jun 19, 2020 ... The volcanic ash was electrically conductive which meant it could cause thunder and lightning, or St Elmo's Fire – an effect where metal parts ...