M
Mitsuhiro Nakagawa
Researcher at Hokkaido University
Publications - 101
Citations - 1438
Mitsuhiro Nakagawa is an academic researcher from Hokkaido University. The author has contributed to research in topics: Volcano & Magma. The author has an hindex of 16, co-authored 92 publications receiving 1178 citations.
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Experimental study of a low-alkali tholeiite at 1–5 kbar: optimal condition for the crystallization of high-An plagioclase in hydrous arc tholeiite
TL;DR: In this article, the authors investigated the effect of H2O on the Ca-Na partitioning between plagioclase and melt in low-alkali tholeiite.
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Mixed Magmas, Mush Chambers and Eruption Triggers: Evidence from Zoned Clinopyroxene Phenocrysts in Andesitic Scoria from the 1995 Eruptions of Ruapehu Volcano, New Zealand
TL;DR: In this paper, it is suggested that high-T magma was injected into a mushy low-T and then the denser and hotter high T magma, as opposed to mixed melt.
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Petrologic investigations of the 1995 and 1996 eruptions of Ruapehu volcano, New Zealand: formation of discrete and small magma pockets and their intermittent discharge
TL;DR: A comparison of the chemistry of four tephras derived from 18 September through June 1996, and two larger events on 23 September and 11 October, and from 1996 (initial and larger eruptions on 17 and 18 June) suggest that episodes of magma mixing occurred in separate magma pockets within the upper part of the magma plumbing system, producing juvenile andesitic scoria and bombs as discussed by the authors.
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The ∼10 ka multiple vent pyroclastic eruption sequence at Tongariro Volcanic Centre, Taupo Volcanic Zone, New Zealand:: Part 1. Eruptive processes during regional extension
TL;DR: A sequence of six major and several minor pyroclastic eruption episodes occurred in the Tongariro Volcanic Centre (TgVC) during a period of uniquely intense activity at ∼10 ka ( 14 C years B.P.). This andesitic/dacitic sequence had an apparent duration of ∼200 to 400 years.
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The ∼10 ka multiple vent pyroclastic eruption sequence at Tongariro Volcanic Centre, Taupo Volcanic Zone, New Zealand. Part 2. Petrological insights into magma storage and transport during regional extension
TL;DR: The six eruption episodes of the ∼10 ka Pahoka-mangamate (PM) sequence (see companion paper) occurred over a?200-400-year period from a 15km-long zone of multiple vents within the Tongariro Volcanic Centre (TgVC), located at the southern end of the TVZ as mentioned in this paper.