Development and application of new methods for calculating magma mixing timescales

2020 年度 実施状況報告書

• 研究課題/領域番号: 19K23471
• 研究機関: 国立研究開発法人産業技術総合研究所
• 研究代表者: Conway Christopher 国立研究開発法人産業技術総合研究所, 地質調査総合センター, 研究員 (50844619)
• 研究期間 (年度): 2019-08-30 – 2022-03-31
• キーワード: magma mixing / diffusion chronometry / eruption time scales / active volcanoes / volcanic hazards

研究実績の概要

One first-author paper has been published in a high-impact journal, and three conference presentations (two first-author, one co-author) were delivered in the last year. Preliminary data collection has been undertaken and further analyses are underway.

現在までの達成度 (区分)

4: 遅れている

理由

The progress of this research project was affected by COVID-19. Laboratory analyses were delayed and two international volcanology conferences were postponed. The conferences will now be held outside of the time period for this project, so the grant will be used to fund domestic field surveys and laboratory analyses this year.

今後の研究の推進方策

Further sample collection, preparation and analysis will be undertaken this year. One first-author manuscript and three co-author manuscripts are in preparation. These will be submitted to international volcanology journals this year.

次年度使用額が生じた理由

The progress of this research project was affected by COVID-19. Laboratory analyses were delayed and two international volcanology conferences were postponed. The conferences will now be held outside of the time period for this project, so the grant will be used to fund domestic field surveys and laboratory analyses this year.

研究成果

• [雑誌論文] Rapid assembly of high-Mg andesites and dacites by magma mixing at a continental arc stratovolcano (2020)
  • 著者名/発表者名: Conway, C.E., Chamberlain, K.J., Harigane, Y., Morgan, D.J., Wilson, C.J.N.
  • 雑誌名: Geology 巻: 48 ページ: 1033 - 1037
  • DOI: 10.1130/G47614.1
  • 査読あり / オープンアクセス / 国際共著
• [学会発表] Timescales of magmatic processes related to the AD 2000 eruptions at Miyakejima, Japan (2020)
  • 著者名/発表者名: Conway, C.E., Geshi, N., Harigane, Y., Saito, Tomiya, A.
  • 学会等名: Japan Geoscience Union, Annual Meeting
• [学会発表] The types and tempos of magmatic processes that preceded historic eruptions at Miyakejima volcano, Japan (2020)
  • 著者名/発表者名: Conway, C.E., Geshi, N., Harigane, Y., Saito, G., Weller, D., Aoki, Y.
  • 学会等名: American Geophysical Union, Annual Meeting
  • 国際学会 / 招待講演
• [学会発表] Petrology, magma mixing, mush mobilization, and timescales of the 1874 A.D. Meiji Eruption of Miyakejima, Japan (2020)
  • 著者名/発表者名: Weller, D., Aoki, Y., Geshi, N., Conway, C.E., Sakata, S., Yasuda, A., Gresse, M., Hokanishi, N., Harigane, Y.
  • 学会等名: American Geophysical Union, Annual Meeting
  • 国際学会