气候变化领域集成服务门户(CCPortal): Subsurface Weathering Revealed in Hillslope-Integrated Porosity Distributions

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DOI	10.1029/2020GL088322
	Subsurface Weathering Revealed in Hillslope-Integrated Porosity Distributions
	Callahan R.P.; Riebe C.S.; Pasquet S.; Ferrier K.L.; Grana D.; Sklar L.S.; Taylor N.J.; Flinchum B.A.; Hayes J.L.; Carr B.J.; Hartsough P.C.; O'Geen A.T.; Holbrook W.S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Subsurface weathering has traditionally been measured using cores and boreholes to quantify vertical variations in weathered material properties. However, these measurements are typically available at only a few, potentially unrepresentative points on hillslopes. Geophysical surveys, conversely, span many more points and, as shown here, can be used to obtain a representative, site-integrated perspective on subsurface weathering. Our approach aggregates data from multiple seismic refraction surveys into a single frequency distribution of porosity and depth for the surveyed area. We calibrated the porosities at a site where cores are coincident with seismic refraction surveys. Modeled porosities from the survey data match measurements at the core locations but reveal a frequency distribution of porosity and depth that differs markedly from the cores. Our results highlight the value of using the site-integrated perspective obtained from the geophysical data to quantify subsurface weathering and water-holding capacity. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Geological surveys; Refraction; Seismology; Weathering; Frequency distributions; Geophysical data; Geophysical surveys; Porosity distributions; Seismic refraction survey; Single frequency; Vertical variation; Water holding capacity; Porosity; borehole; frequency analysis; hillslope; integrated approach; porosity; seismic refraction; seismic survey; weathering
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/169955
作者单位	Department of Geology and Geophysics, University of Wyoming, Laramie, WY, United States; Université de Paris, Institut de Physique du Globe de Paris, CNRS, Paris, France; Department of Geoscience, University of Wisconsin-Madison, Madison, WI, United States; Department of Geography, Planning and Environment, Concordia University, Montreal, QC, Canada; CSIRO Deep Earth Imaging FSP, Glen Osmond, SA, Australia; Department of Earth Sciences, Dickinson College, Carlisle, PA, United States; Department of Land, Air, and Water Resources, University of California, Davis, CA, United States; Department of Geosciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
推荐引用方式 GB/T 7714	Callahan R.P.,Riebe C.S.,Pasquet S.,et al. Subsurface Weathering Revealed in Hillslope-Integrated Porosity Distributions[J],2020,47(15).
APA	Callahan R.P..,Riebe C.S..,Pasquet S..,Ferrier K.L..,Grana D..,...&Holbrook W.S..(2020).Subsurface Weathering Revealed in Hillslope-Integrated Porosity Distributions.Geophysical Research Letters,47(15).
MLA	Callahan R.P.,et al."Subsurface Weathering Revealed in Hillslope-Integrated Porosity Distributions".Geophysical Research Letters 47.15(2020).