Please use this identifier to cite or link to this item:
Authors: Costa, Antonio* 
Suzuki, Yujiro J* 
Koyaguchi, Takehiro* 
Title: Understanding the plume dynamics of explosive super-eruptions
Issue Date: 2018
Series/Report no.: /9 (2018)
DOI: 10.1038/s41467-018-02901-0
Abstract: Explosive super-eruptions can erupt up to thousands of km3of magma with extremely high mass flow rates (MFR). The plume dynamics of these super-eruptions are still poorly understood. To understand the processes operating in these plumes we used a fluid-dynamical model to simulate what happens at a range of MFR, from values generating intense Plinian columns, as did the 1991 Pinatubo eruption, to upper end-members resulting in co-ignimbrite plumes like Toba super-eruption. Here, we show that simple extrapolations of integral models for Plinian columns to those of super-eruption plumes are not valid and their dynamics diverge from current ideas of how volcanic plumes operate. The different regimes of air entrainment lead to different shaped plumes. For the upper end-members can generate local up-lifts above the main plume (over-plumes). These over-plumes can extend up to the mesosphere. Injecting volatiles into such heights would amplify their impact on Earth climate and ecosystems.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
cossuz2018.pdf1.18 MBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on Nov 11, 2018


checked on Nov 11, 2018

Google ScholarTM