Vulkane
Scientists have found that the 2022 eruption of an underwater volcano in the South Pacific triggered a chemical process that removed significant amounts of methane from the atmosphere. The discovery, detailed in a new study, shows how volcanic ash and seawater combined to break down the potent greenhouse gas.
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Der Vulkan Puracé im kolumbianischen Departamento Cauca stößt weiterhin Asche aus, was die Behörden dazu veranlasst hat, die Warnstufe auf Gelb zu belassen. Dieser Status weist auf Veränderungen der vulkanischen Aktivität hin, ohne dass ein unmittelbarer Ausbruch bevorsteht. Bewohner in nahegelegenen Gebieten, einschließlich Popayán, berichteten seit dem 7. Mai von Ascheregen.
Researchers have discovered that shear forces within volcanic conduits can trigger gas bubble formation in magma, independent of pressure drops. This mechanism helps explain why some gas-rich volcanoes produce gentle lava flows instead of violent eruptions. The findings, published in Science, could improve eruption forecasting models.
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Researchers have discovered that continents are slowly stripped from below by mantle waves, feeding volcanic activity in distant oceans. This process explains continental chemical signatures in remote ocean islands. The findings, published in Nature Geoscience, challenge traditional views on mantle dynamics.