气候变化领域集成服务门户(CCPortal): Continuous Dissolved Gas Tracing of Fracture-Matrix Exchanges

CCPortal

DOI	10.1029/2020GL088944
	Continuous Dissolved Gas Tracing of Fracture-Matrix Exchanges
	Hoffmann R.; Goderniaux P.; Jamin P.; Chatton E.; de la Bernardie J.; Labasque T.; Le Borgne T.; Dassargues A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:17
英文摘要	Transport in fractured media plays an important role in a range of processes, from rock weathering and microbial processes to contaminant transport, and energy extraction and storage. Diffusive transfer between the fracture fluid and the rock matrix is often a key element in these applications. But the multiscale heterogeneity of fractures renders the field assessment of these processes extremely challenging. This study explores the use of dissolved gases as tracers of fracture-matrix interactions, which can be measured continuously and highly accurately using mobile mass spectrometers. Since their diffusion coefficients vary significantly, multiple gases are used to probe different scales of fracture-matrix exchanges. Tracer tests with helium, xenon, and argon were performed in a fractured chalk aquifer, and resulting tracer breakthrough curves are modeled. Results show that continuous dissolved gas tracing with multiple tracers provides key constrains on fracture-matrix interactions and reveal unexpected scale effects in fracture-matrix exchange rates. ©2020. The Authors.
英文关键词	Aquifers; Dissolution; Tracers; Weathering; Contaminant transport; Diffusive transfer; Energy extraction; Field assessment; Fracture-matrix interaction; Microbial process; Rock weathering; Tracer breakthrough curves; Fracture; diffusion; dissolved gas; energy storage; fracture flow; heterogeneity; pollutant transport; trace element; 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/169823
作者单位	Hydrogeology and Environmental Geology, UEE, Liège University, Liège, Belgium; Geology and Applied Geology, Polytech Mons, University of Mons, Mons, Belgium; Geoscience Rennes, University Rennes 1, Rennes, France
推荐引用方式 GB/T 7714	Hoffmann R.,Goderniaux P.,Jamin P.,et al. Continuous Dissolved Gas Tracing of Fracture-Matrix Exchanges[J],2020,47(17).
APA	Hoffmann R..,Goderniaux P..,Jamin P..,Chatton E..,de la Bernardie J..,...&Dassargues A..(2020).Continuous Dissolved Gas Tracing of Fracture-Matrix Exchanges.Geophysical Research Letters,47(17).
MLA	Hoffmann R.,et al."Continuous Dissolved Gas Tracing of Fracture-Matrix Exchanges".Geophysical Research Letters 47.17(2020).