Relationship between eruptive style and vesicularity of juvenile clasts during eruptive episode A of Towada Volcano, Northeast Japan
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- 作者：Yoshimi Hiroi ; hiroxi27@cneas.tohoku.ac.jp" class="auth_mail" title="E-mail the corresponding author ; Tsuyoshi Miyamoto
- 关键词：Vesicularity ; Pumice lapilli ; Glass shards ; Plinian eruption ; Phreatoplinian eruption
- 刊名：Journal of Volcanology and Geothermal Research
- 出版年：2016
- 出版时间：1 October 2016
- 年：2016
- 卷：325
- 期：Complete
- 页码：86-97
- 全文大小：3024 K
文摘
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We compared the ejecta vesicularity between magmatic and phreatomagmatic phases.
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Vesicularity discrepancy between lapilli and shard is caused by the time of quenched.
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Phreatoplinian products are good to estimate the primary vesicularity in a conduit.
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Bubble expansion is considered as important factor causing phreatoplinian eruption.