气候变化领域集成服务门户(CCPortal): Explosive Submarine Eruptions: The Role of Condensable Gas Jets in Underwater Eruptions

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DOI	10.1029/2020JB020969
	Explosive Submarine Eruptions: The Role of Condensable Gas Jets in Underwater Eruptions
	Cahalan R.C.; Dufek J.
发表日期	2021
ISSN	21699313
卷号	126 期号:2
英文摘要	In explosive submarine eruptions, volcanic jets transport fragmented tephra and exsolved gases from the conduit into the water column. Upon eruption the volcanic jet mixes with seawater and rapidly cools. This mixing and associated heat transfer ultimately determines whether steam present in the jet will completely condense or rise to breach the sea surface and become a subaerial hazard. We develop a multiphase model with subgrid calculations for in situ steam condensation to explore the relationship between eruption conditions (e.g., water depth, mass eruption rate, and eruption temperature) and the produced steam jet height and breach potential. We find that mass eruption rate is the predominant control of jet height, more so than vent width. We present a series of parameter maps predicting the limits of eruption breach for water depths of 200, 500, and 1,000 m. We demonstrate the relationship between subsurface jets and sea surface temperature anomalies, and sea surface displacement. Lastly, we evaluate the role of dispersed ash on volcanic jet development by comparing jets with particles of different size and density, as well as differing eruption conditions with particles. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	eruption jet; explosive eruptions; numerical modeling; submarine volcanism
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187351
作者单位	Department of Earth Science, University of Oregon, Eugene, OR, United States
推荐引用方式 GB/T 7714	Cahalan R.C.,Dufek J.. Explosive Submarine Eruptions: The Role of Condensable Gas Jets in Underwater Eruptions[J],2021,126(2).
APA	Cahalan R.C.,&Dufek J..(2021).Explosive Submarine Eruptions: The Role of Condensable Gas Jets in Underwater Eruptions.Journal of Geophysical Research: Solid Earth,126(2).
MLA	Cahalan R.C.,et al."Explosive Submarine Eruptions: The Role of Condensable Gas Jets in Underwater Eruptions".Journal of Geophysical Research: Solid Earth 126.2(2021).