HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >

Transition in eruption style during the 2011 eruption of Shinmoe-dake, in th Kirishima volcanic group : Implications from a steady conduit flow model

This item is licensed under: Creative Commons Attribution 4.0 International

Files in This Item:
Takana_Hashimoto_2013_EPS.pdf2.69 MBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/64583

Title: Transition in eruption style during the 2011 eruption of Shinmoe-dake, in th Kirishima volcanic group : Implications from a steady conduit flow model
Authors: Tanaka, Ryo Browse this author
Hashimoto, Takeshi Browse this author →KAKEN DB
Keywords: Conduit-flow model
Shinmoe-dake
eruption
volcano
eruption style
permeability
degassing
magma chamber
Issue Date: Jun-2013
Publisher: Springer
Journal Title: Earth, Planets and Space
Volume: 65
Issue: 6
Start Page: 645
End Page: 655
Publisher DOI: 10.5047/eps.2013.05.002
Abstract: Mount Shinmoe-dake, in the Kirishima volcanic group (in southern Kyushu, Japan), erupted in January 2011. The eruption style was initially phreatomagmatic, and then underwent a series of transitions from sub-plinian explosions to an extrusion of lava from the summit crater. The purpose of the present study is to investigate the cause of such changes in eruption styles, focusing on the conditions for the eruption to be non-explosive and for the lava effusion to cease. To examine the conditions in the conduit and magma chamber, a numerical code is devised, based on the one-dimensional steady flow model of Kozono and Koyaguchi (2010), who modeled a dome-forming eruption. We systematically search for a condition in which the magma would not be fragmented, but the initial volatile content in the magma chamber would remain constant and unchanged. We find that the high magma permeability and/or the high degree of lateral gas escape was needed for the eruption to be effusive, and we estimate the pressure decrement at the cessation of lava extrusion.
Rights: http://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/64583
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 橋本 武志

Export metadata:

OAI-PMH ( junii2 , jpcoar )

MathJax is now OFF:


 

 - Hokkaido University