Modeling of volcano inflation associated with magma ascent in an open conduit

2011 Fiscal Year Final Research Report

• Project/Area Number: 21540427
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: Tohoku University
• Principal Investigator: NISHIMURA Takeshi 東北大学, 大学院・理学研究科, 准教授 (40222187)
• Project Period (FY): 2009 – 2011
• Keywords: マグマ上昇 / 山体膨張 / 地殻変動 / 気泡成長

Research Abstract

Volcano inflations generated by ascent of magma with gas bubbles are investigated. Ascent of magma with gas bubble growth due to diffusive flow causes volcano inflation with a constant rate or temporally accelerated change. For the case of a large slug rising up in viscous melt, volcano inflation turns to deflate when the slug approaches to the ground surface. Finite element calculations indicate that the volcano inflation rate becomes small after the magma head goes above a geodetic station.

Research Products

• [Journal Article] Inflations prior to vulcanian eruptions and gas bursts detected by tilt observations at Semeru Volcano (2012)
  • Author(s): Nishimura, T., Iguchi, M., Kawaguchi, R., Surono, Hendrasto, M., Rosadi, U.
  • Journal Title: Indonesia, Bull. Volcanol Volume: 74 Pages: 903-911
  • DOI: doi:10.1007/s00445-012-0579-z
  • Peer Reviewed
• [Journal Article] Seismicity and magma supply rate of the 1998 failed eruption at Iwate volcano (2011)
  • Author(s): Nishimura, T. and Ueki, S.
  • Volume: 73
  • Pages: 133-142
  • Peer Reviewed
• [Journal Article] Volcano deformation caused by magma ascent in an open conduit (2009)
  • Author(s): Nishimura, T.
  • Journal Title: J. Volcanol. Geotherm. Res. Volume: 187 Pages: 178-192
  • Peer Reviewed
• [Presentation] Volcano inflations prior to small vulcanian eruptions at Suwanose-jima volcano (2011)
  • Author(s): Takeshi Nishimura, Masato Iguchi, Jun Oikawa, Hiroshi Yakiwara Hiroshi Aoyama, Yusaku Ohta, Haruhisa Nakamichi and Takeshi Tameguri
  • Organizer: AGU 2011 fall meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2011-12-09
• [Presentation] 開口型火道内のスラグ上昇による山体変形 (2011)
  • Author(s): 川口亮平, 西村太志, 佐藤春夫
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 千葉
  • Year and Date: 2011-05-24
• [Presentation] 地震・傾斜解析に基づく2007年スメル山ブルカノ式火山噴火の発生機構 (2011)
  • Author(s): 西村太志, 井口正人, Surono, Muhamad Hendrasto, Umar Rosadi
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 千葉
  • Year and Date: 2011-05-24
• [Presentation] インドネシア・スメル山のガス噴出イベントに先行する山体膨張 (2010)
  • Author(s): 西村太志, 井口正人, 川口亮平・Surono, Muhamad Hendrasto, Umar Rosadi
  • Organizer: 日本火山学会2010年秋季大会
  • Place of Presentation: 京都
  • Year and Date: 20101000
• [Presentation] Volcano inflation prior to gas explosions at Semeru Volcano (2010)
  • Author(s): Takeshi Nishimura, Masato Iguchi, Ryohei Kawaguchi, Surono, Muhamad Hendrasto, and Umar Rosadi
  • Organizer: AGU 2010 fall meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2010-12-17
• [Presentation] 開口型火道内のマグマ上昇による山体変形-有限要素法による山体地形の影響の評価- (2010)
  • Author(s): 喜多村陽, 西村太志, 佐藤春夫
  • Organizer: 日本火山学会2010年秋季大会
  • Place of Presentation: 京都
  • Year and Date: 2010-10-09
• [Presentation] インドネシア国スメル火山における傾斜観測 (2010)
  • Author(s): 西村太志, 井口正人, 山崎友也, 川口亮平, スロノ, Hendrasto Muhamad, Hidayati Sri, Triastuty Hetty, Rosadi Umar
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 千葉
  • Year and Date: 2010-05-27
• [Presentation] 1998年岩手山噴火未遂-地震活動とマグマ上昇の時間変化- (2010)
  • Author(s): 西村太志・植木貞人
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 千葉
  • Year and Date: 2010-05-25
• [Presentation] 諏訪之瀬島火山火口近傍における傾斜観測 (2010)
  • Author(s): 西村太志, 井口正人, 太田雄策, 喜多村陽, 青山裕, 鈴木敦生, 及川純, 中道治久, 八木原寛, 為栗健
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 千葉
  • Year and Date: 2010-05-24
• [Presentation] Volcano inflation prior to eruption : Calculation based on a 1-D conduit magma flow model (2009)
  • Author(s): Ryohei Kawaguchi, Takeshi Nishimura, and Haruo Sato
  • Organizer: AGU 2009 fall meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2009-12-18
• [Presentation] 噴火に先行する山体膨張データによるマグマ内気泡成長の推定の可能性 (2009)
  • Author(s): 西村太志
  • Organizer: 日本火山学会2009年秋季大会
  • Place of Presentation: 小田原
  • Year and Date: 2009-10-10
• [Presentation] 開口型火道のマグマ上昇過程に伴う山体変形の特徴-一次元火道流モデルによる計算- (2009)
  • Author(s): 川口亮平, 西村太志, 佐藤春夫
  • Organizer: 日本火山学会2009年秋季大会
  • Place of Presentation: 小田原
  • Year and Date: 2009-10-10
• [Presentation] ブルカノ式噴火中の地殻変動に関する一考察 (2009)
  • Author(s): 西村太志
  • Organizer: 日本地球惑星科学連合2009年大会
  • Place of Presentation: 千葉
  • Year and Date: 2009-05-17
• [Presentation] 1次元火道流モデルに基づく開口型火道におけるマグマ上昇過程のシミュレーション (2009)
  • Author(s): 川口亮平, 西村太志, 佐藤春夫
  • Organizer: 日本地球惑星科学連合2009年大会
  • Place of Presentation: 千葉
  • Year and Date: 2009-05-16
• [Book] Volcanic earthquakes and tremor in Japan (2011)
  • Author(s): Nishimura, T. and Iguchi, M.
  • Total Pages: 253
  • Publisher: Kyoto-Univ. Press