气候变化领域集成服务门户(CCPortal): Reflection tomography of time-lapse GPR data for studying dynamic unsaturated flow phenomena

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DOI	10.5194/hess-24-159-2020
	Reflection tomography of time-lapse GPR data for studying dynamic unsaturated flow phenomena
	Bradford J.; Mangel A.R.; Moysey S.M.J.
发表日期	2020
ISSN	1027-5606
起始页码	159
结束页码	167
卷号	24 期号:1
英文摘要	Ground-penetrating radar (GPR) reflection tomography algorithms allow non-invasive monitoring of water content changes resulting from flow in the vadose zone. The approach requires multi-offset GPR data that are traditionally slow to collect. We automate GPR data collection to reduce the survey time significantly, thereby making this approach to hydrologic monitoring feasible. The method was evaluated using numerical simulations and laboratory experiments that suggest reflection tomography can provide water content estimates to within 5%vol vol-10%vol vol-1 for the synthetic studies, whereas the empirical estimates were typically within 5 %-15% of measurements from in situ probes. Both studies show larger observed errors in water content near the periphery of the wetting front, beyond which additional reflectors were not present to provide data coverage. Overall, coupling automated GPR data collection with reflection tomography provides a new method for informing models of subsurface hydrologic processes and a new method for determining transient 2-D soil moisture distributions. © Author(s) 2020.
语种	英语
scopus关键词	Geological surveys; Geophysical prospecting; Ground penetrating radar systems; Numerical methods; Radar reflection; Soil moisture; Tomography; Empirical estimate; Ground penetrating radar (GPR); Hydrologic monitoring; Laboratory experiments; Non-invasive monitoring; Soil moisture distribution; Tomography algorithm; Water content estimates; Data acquisition; ground penetrating radar; hydrological modeling; moisture content; reflectometry; soil moisture; tomography; two-dimensional modeling; unsaturated flow
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159528
作者单位	Bradford, J., Department of Geophysics, Colorado School of Mines, Golden, CO 80401, United States; Mangel, A.R., Department of Geophysics, Colorado School of Mines, Golden, CO 80401, United States, Department of Environmental Engineering and Earth Science, Clemson University, Clemson, SC 29634, United States; Moysey, S.M.J., Department of Environmental Engineering and Earth Science, Clemson University, Clemson, SC 29634, United States
推荐引用方式 GB/T 7714	Bradford J.,Mangel A.R.,Moysey S.M.J.. Reflection tomography of time-lapse GPR data for studying dynamic unsaturated flow phenomena[J],2020,24(1).
APA	Bradford J.,Mangel A.R.,&Moysey S.M.J..(2020).Reflection tomography of time-lapse GPR data for studying dynamic unsaturated flow phenomena.Hydrology and Earth System Sciences,24(1).
MLA	Bradford J.,et al."Reflection tomography of time-lapse GPR data for studying dynamic unsaturated flow phenomena".Hydrology and Earth System Sciences 24.1(2020).