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8 de abr. de 2019 · One of the leading killers during explosive volcanic eruptions is a family of superheated gas, ash, and debris known as pyroclastic density currents. These tumbling, turbulent paroxysms rush...
In the afternoon of 25 April 2015, a M W 7.8 earthquake struck Nepal and surrounding countries. Tremors from the quake triggered an avalanche from Pumori into Base Camp on Mount Everest. At least twenty-two people were killed, surpassing the toll of an avalanche that occurred in 2014 as the deadliest disaster on the mountain. [1] Avalanches.
17 de nov. de 2020 · Volcanic debris avalanches (VDAs) are awesome natural processes forming by lateral collapse of volcanic edifices—they characterize almost all stratovolcanoes in different geodynamic settings around the world (Siebert 1984; McGuire 1996; Voight and Elsworth 1997; Voight 2000; Shea and Van Wyk de Vries 2010; Van Wyk de Vries and Davies 2015 ).
Debris avalanches are extremely-rapid, flowlike movements of partially or fully saturated debris on a steep slope. They often initiate asfailures of a granular soil veneer, often due to loss of cohesion (Hungr et al., 2014 ).
6 de dic. de 2023 · These catastrophic collapses of a volcano's slopes happen most often during volcanic activity but sometimes occur in non-eruption times, and they often transform into lahars that threaten populated regions downstream. They can be triggered by eruption, earthquake, or by long-term exposure to weathering of the rocks that make up the ...
1 de ene. de 2015 · A volcanic debris avalanche forms when a volcanic landslide disaggregates following its initial motion. It accelerates as a fast-moving, deforming mass over the area below the volcano. The resulting debris avalanche deposit (DAD) can extend many kilometers from the foot of the edifice (FIGURE 5.1, FIGURE 5.2).
8 de nov. de 2023 · November 1, 2023. Future Eruptions at Mount Adams. The geological record of activity suggests that the most probable future eruptions would be small outbursts of tephra and lava flows from vents on the summit and upper flanks of the volcano rather than from the surrounding volcanic field. By. Cascades Volcano Observatory, Mount Adams.
