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Hidden weaknesses, Merapi volcano

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Hidden weaknesses, Merapi volcano

Nearly 10 yrs of drone surveys at Merapi volcano highlights the importance of hydrothermal weakening and structures hidden beneath younger lavas. A fracture system that formed in 2012 was subsequently buried under new lava in 2018. Only a year later, the new lava dome that formed in 2018 showed signs of instability and collapse along the previously buried fracture system, implying that hidden weaknesses may be a key factor in controlling hazardous volcano collapse.
Darmawan et al., (2022)
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  • The unstable southern flank of the Merapi volcano during a partial collapse in 2019. Credit: GFZ Potsdam

    Hidden weaknesses within volcanoes may cause volcano collapse

    Lava domes form at the top of many volcanoes when viscous lava erupts. When they become unstable, they can collapse and cause a hazard. An international team of researchers has analysed summit dome instabilities at Merapi Volcano, Indonesia. The researchers hope that by understanding the inner processes, volcano collapses can be better forecasted.