Accelerated uplift and magmatic intrusion of the Yellowstone caldera, 2004 to 2006

Wu Lung Chang, Robert B. Smith, Charles Wicks, Jamie M. Farrell, Christine M. Puskas

研究成果: 雜誌貢獻期刊論文同行評審

115 引文 斯高帕斯(Scopus)

摘要

The Yellowstone caldera began a rapid episode of ground uplift in mid-2004, revealed by Global Positioning System and interferometric synthetic aperture radar measurements, at rates up to 7 centimeters per year, which is over three times faster than previously observed inflation rates. Source modeling of the deformation data suggests an expanding volcanic sill of ∼1200 square kilometers at a 10-kilometer depth beneath the caldera, coincident with the top of a seismically imaged crustal magma chamber. The modeled rate of source volume increase is 0.1 cubic kilometer per year, similar to the amount of magma intrusion required to supply the observed high heat flow of the caldera. This evidence suggests magma recharge as the main mechanism for the accelerated uplift, although pressurization of magmatic fluids cannot be ruled out.

原文???core.languages.en_GB???
頁(從 - 到)952-956
頁數5
期刊Science
318
發行號5852
DOIs
出版狀態已出版 - 2 11月 2007

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