Concerns: The number of volcanic eruptions will increase in the future


Ana Flávia Martins Meteored Brazil Yesterday 5 min Increase in the probability of high-magnitude volcanic eruptions. Currently, the maximum magnitude rating for a volcanic eruption is around 8, according to the Volcanic Explosivity Index (VEI). Each IEV unit corresponds to a process that increases on an exponential scale of ten, taking into account: the height of the eruption column, the duration in hours, the elements of qualitative appreciation and the volume of ejected material. Volcanic eruption in Tonga released more energy than the most powerful nuclear bomb ever dropped.The volcanic eruption of Mount Tambora, located in Indonesia, reached a magnitude of 7 in 1815 and killed around one hundred a thousand people This has made us aware of the need to monitor volcanoes, but we are still far from avoiding a supereruption and allowing the population to emerge unscathed from this scenario. Few investments are made to mitigate the consequences of an eruption of this magnitude. Imagine it’s bigger than that! Strange phenomena after a strong earthquake in New Papua Guinea! In January 2022, the Hunga Tonga-Hunga Ha’apai volcano erupted with an intensity of 6 on the IEV scale, spewing ash that reached the earth’s stratosphere. Iceland’s Fagradalsfjall volcano erupted last month with a magnitude of 5.4 on the IEV scale. Learn how NOAA sent vital communications in real time and what the eruption could mean for tsunami research: — NOAA (@NOAA) February 3 of 2022 An article published in August 2022 in the journal Nature states that the intervals between cataclysmic eruptions are thousands of years shorter than previously thought; points out that it is wrong to say that the risks of major eruptions are low, and calls the lack of investment by governments in monitoring and responding to potential volcanic disasters “reckless”. According to the authors, over the next century, large-scale volcanic eruptions are hundreds of times more likely than asteroid and comet impacts. Frustrating, because while “planetary defense” benefits from the commitment of various agencies around the world and receives millions of dollars in funding, the same is not true of studies aimed at volcanoes. The world is not ready for such events, said Professor Michael Cassidy of the Center for the Study of Existential Risk at the University of Cambridge. Recent ice core data suggest that the probability of an eruption of magnitude greater than 7 on the IEV scale is 16% for this century. According to the researchers, eruptions of this size have already led to abrupt climate change and the collapse of civilizations, while being associated with an increase in pandemics, there is no coordinated action or significant investment to mitigate the effects global volcanic eruptions. According to scientists, it is essential to devote more resources to monitoring volcanoes, in particular aerial and satellite observation and ground monitoring. When an ex-hurricane breaks heat records in France! It is scientifically clear that volcanoes emit less carbon dioxide than anthropogenic activities. But the increase in the frequency of intense volcanic eruptions, combined with the acceleration of human activities, will have a negative impact on the climate change process. Not to mention the other social consequences of the damage caused by volcanic eruptions. How Volcanoes Can Affect Climate During larger eruptions, large amounts of volcanic gases, aerosol droplets, and ash are injected into the stratosphere. Most of these substances are removed from the upper atmosphere within a few weeks. But gases such as carbon dioxide (a greenhouse gas and the main driver of climate change) can contribute to global warming, so there is no doubt that very large volcanic eruptions can inject significant amounts of carbon dioxide carbon in the atmosphere, thus contributing to the process of intensifying climate change. In addition, sulfate aerosols have the ability to destroy the Earth’s ozone layer.
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