气候变化领域集成服务门户(CCPortal): Magma Intrusion and Volatile Ascent Beneath Norris Geyser Basin, Yellowstone National Park

CCPortal

DOI	10.1029/2019JB018208
	Magma Intrusion and Volatile Ascent Beneath Norris Geyser Basin, Yellowstone National Park
	Wicks C.W.; Dzurisin D.; Lowenstern J.B.; Svarc J.
发表日期	2020
ISSN	21699313
卷号	125 期号:2
英文摘要	Recent activity has provided new insights into the causes of surface deformation in and around the Yellowstone Caldera, a topic that has been debated since the discovery of caldera floor uplift more than four decades ago. An episode of unusually rapid uplift (>15 cm/yr) centered near Norris Geyser Basin along the north caldera rim began in late 2013 and continued until a Mw 4.9 earthquake on 30 March 2014; thereafter, uplift abruptly switched to subsidence. Uplift at rates of several centimeters per year resumed in 2016 and continued at least through the end of 2018. Modeling of Global Positioning System and interferometric synthetic aperture radar data suggests an evolving process of deep magma intrusion during 1996–2001 followed by volatile ascent and accumulation at shallow levels, perhaps as shallow as a few hundred meters depth. The depth of shallow volatile accumulation appears to have shallowed from the 2014 to the 2016 deformation episode, and frequent eruptions of Steamboat Geyser since March 2018 are likely a surface manifestation of this ongoing process. Hydrothermal explosion features are prominent in the Norris Geyser Basin area, and the apparent shallow nature of the volatile accumulation implies an increased risk of hydrothermal explosions. Published 2020. This article is a U.S. Government work and is in the public domain in the USA.
英文关键词	deformation; magma; volatiles; volcano; Yellowstone
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/187945
作者单位	U. S. Geological Survey, Moffett Field, CA, United States; David A. Johnston Cascades Volcano Observatory, U. S. Geological Survey, Vancouver, WA, United States
推荐引用方式 GB/T 7714	Wicks C.W.,Dzurisin D.,Lowenstern J.B.,et al. Magma Intrusion and Volatile Ascent Beneath Norris Geyser Basin, Yellowstone National Park[J],2020,125(2).
APA	Wicks C.W.,Dzurisin D.,Lowenstern J.B.,&Svarc J..(2020).Magma Intrusion and Volatile Ascent Beneath Norris Geyser Basin, Yellowstone National Park.Journal of Geophysical Research: Solid Earth,125(2).
MLA	Wicks C.W.,et al."Magma Intrusion and Volatile Ascent Beneath Norris Geyser Basin, Yellowstone National Park".Journal of Geophysical Research: Solid Earth 125.2(2020).