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Ultra-Plinian. In 1980, volcanologist George P. L. Walker proposed Hatepe eruption as the representative of a new class called ultra-Plinian deposits, based on its exceptional dispersive power and eruptive column height. A dispersal index of 50,000 square kilometres (19,000 sq mi) has been proposed as a cutoff for an ultra-Plinian ...
- Plinian eruption - Simple English Wikipedia, the free encyclopedia
A Plinian eruption is a kind of volcanic eruption which is...
- Plinian eruption - Simple English Wikipedia, the free encyclopedia
Altre varianti di questa tipologia sono le eruzioni Krakatoiane e Ultra-Pliniane: queste tipologie eruttive si caratterizzano sia per avere un indice di esplosività ancora maggiore, che può arrivare a distruggere completamente l'edificio vulcanico (ne sono un esempio il Krakatoa o il Santorini), sia soprattutto per le enormi quantità di ...
The stronger eruptive types are Pelean eruptions, followed by Plinian eruptions; the strongest eruptions are called Ultra-Plinian. Subglacial and phreatic eruptions are defined by their eruptive mechanism, and vary in strength.
17 feb 2016 · 44 Citations. 93 Altmetric. Metrics. Abstract. The 39 ka Campanian Ignimbrite (CI) super-eruption was the largest volcanic eruption of the past 200 ka in Europe. Tephra deposits indicate two...
- Alejandro Marti, Arnau Folch, Antonio Costa, Samantha Engwell
- 2016
14 apr 2023 · Ultra-Plinian eruptions are the largest of all volcanic eruptions, and are so voluminous that large calderas form above vacated magma chambers. These eruptions are more intense and have a higher eruption rate than Plinian ones and form higher eruption columns.
1 gen 2015 · The term “plinian” encompasses powerful explosive eruptions characterized by the quasi-steady, hours-long, high-speed discharge into the atmosphere of a high-temperature, multiphase mixture (gas, solid, and liquid particles), forming a buoyant vertical column that reaches heights of tens of kilometers and often alternates with phases of column c...
