Pressure sources of the Miyakejima volcano estimated from crustal deformation studies during 2011–2013

Miyo Fukui, Takeshi Matsushima, Natsumi Yumitori, Jun Oikawa, Atsushi Watanabe, Takashi Okuda, Taku Ozawa, Yuhki Kohno, Yousuke Miyagi

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

Following the eruption of the Miyakejima Volcano in the Izu Islands, Japan, in the year 2000, a continuous GPS network observed the ongoing contracting crustal deformation. Subsequently, a slight inflation of the island was detected from around 2006, and we initiated a campaign of dense GPS observations around the volcano from 2011. Precise crustal deformation studies indicated inflation in the southern part of the island and deflation around the center of the crater. Using these observations, we estimated that three magma sources (a shallow deflation sill under the crater, a southern inflation dyke, and a deep inflation spherical source) were activated during 2011–2013. In particular, the presence of an inflation dyke at an intermediate depth had not been inferred by previous studies. Accordingly, we posit that the supply of magma from a deep spherical source to the new dyke source has been initiated only recently.

本文言語英語
ホスト出版物のタイトルInternational Symposium on Geodesy for Earthquake and Natural Hazards (GENAH) - Proceedings of the International Symposium on Geodesy for Earthquake and Natural Hazards (GENAH)
編集者Manabu Hashimoto
出版社Springer Verlag
ページ117-123
ページ数7
ISBN(印刷版)9783319397672
DOI
出版ステータス出版済み - 1 1 2017
イベントProceedings of the International Symposium on Geodesy for Earthquake and Natural Hazards, GENAH 2014 - Matsushima, 日本
継続期間: 7 22 20147 26 2014

出版物シリーズ

名前International Association of Geodesy Symposia
145
ISSN(印刷版)0939-9585

その他

その他Proceedings of the International Symposium on Geodesy for Earthquake and Natural Hazards, GENAH 2014
国/地域日本
CityMatsushima
Period7/22/147/26/14

All Science Journal Classification (ASJC) codes

  • 地球科学におけるコンピュータ
  • 地球物理学

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