气候变化领域集成服务门户(CCPortal): Present-Day Stress Field Influences Bedrock Fracture Openness Deep Into the Subsurface

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DOI	10.1029/2020GL090581
	Present-Day Stress Field Influences Bedrock Fracture Openness Deep Into the Subsurface
	Moon S.; Perron J.T.; Martel S.J.; Goodfellow B.W.; Mas Ivars D.; Hall A.; Heyman J.; Munier R.; Näslund J.-O.; Simeonov A.; Stroeven A.P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:23
英文摘要	Fracturing of bedrock promotes water-rock interactions and influences the formation of the life-sustaining layer of soil at Earth's surface. Models predict that present-day stress fields should influence bedrock fracture openness, but testing this prediction has proven difficult because comprehensive fracture data sets are rarely available. We model the three-dimensional present-day stress field beneath the deglaciated, low-relief landscape of Forsmark, Sweden. We account for ambient regional stresses, pore pressure, topography, sediment weight, and seawater loading. We then compare the modeled stresses to a data set of ~50,000 fractures reaching depths of 600 m at Forsmark. We show that modeled failure proxies correlate strongly with the fraction of observed open fractures to depths of ~500 m. This result implies that the present-day regional stress field, affected by surface conditions and pore pressure, influences fracture openness in bedrock hundreds of meters beneath the surface, thereby preparing the rock for further weathering. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Fracture testing; Pore pressure; Stress relief; Stresses; Topography; Weathering; Bedrock fracture; Data set; Earth's surface; Fracture data; Regional stress field; Stress field; Surface conditions; Water rock interactions; Fracture; bedrock; data set; fracture mechanics; sediment analysis; stress field; subsurface flow; water-rock interaction; weathering; Forsmark; Sweden; Uppsala [Sweden]
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169351
作者单位	Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA, United States; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Earth Sciences, University of Hawaii, Honolulu, HI, United States; Geological Survey of Sweden, Lund, Sweden; Swedish Nuclear Fuel and Waste Management Company, Stockholm, Sweden; Department of Soil and Rock Mechanics, KTH Royal Institute of Technology, Stockholm, Sweden; Department of Physical Geography, Stockholm University, Stockholm, Sweden; Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden; Terra Mobile Consultants AB, Stockholm, Sweden; Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
推荐引用方式 GB/T 7714	Moon S.,Perron J.T.,Martel S.J.,et al. Present-Day Stress Field Influences Bedrock Fracture Openness Deep Into the Subsurface[J],2020,47(23).
APA	Moon S..,Perron J.T..,Martel S.J..,Goodfellow B.W..,Mas Ivars D..,...&Stroeven A.P..(2020).Present-Day Stress Field Influences Bedrock Fracture Openness Deep Into the Subsurface.Geophysical Research Letters,47(23).
MLA	Moon S.,et al."Present-Day Stress Field Influences Bedrock Fracture Openness Deep Into the Subsurface".Geophysical Research Letters 47.23(2020).