气候变化领域集成服务门户(CCPortal): Active heat pulse sensing of 3-D-flow fields in streambeds

CCPortal

DOI	10.5194/hess-22-1917-2018
	Active heat pulse sensing of 3-D-flow fields in streambeds
	Banks E.W.; Shanafield M.A.; Noorduijn S.; McCallum J.; Lewandowski J.; Batelaan O.
发表日期	2018
ISSN	1027-5606
起始页码	1917
结束页码	1929
卷号	22 期号:3
英文摘要	Profiles of temperature time series are commonly used to determine hyporheic flow patterns and hydraulic dynamics in the streambed sediments. Although hyporheic flows are 3-D, past research has focused on determining the magnitude of the vertical flow component and how this varies spatially. This study used a portable 56-sensor, 3-D temperature array with three heat pulse sources to measure the flow direction and magnitude up to 200gmm below the water-sediment interface. Short, 1gmin heat pulses were injected at one of the three heat sources and the temperature response was monitored over a period of 30gmin. Breakthrough curves from each of the sensors were analysed using a heat transport equation. Parameter estimation and uncertainty analysis was undertaken using the differential evolution adaptive metropolis (DREAM) algorithm, an adaption of the Markov chain Monte Carlo method, to estimate the flux and its orientation. Measurements were conducted in the field and in a sand tank under an extensive range of controlled hydraulic conditions to validate the method. The use of short-duration heat pulses provided a rapid, accurate assessment technique for determining dynamic and multi-directional flow patterns in the hyporheic zone and is a basis for improved understanding of biogeochemical processes at the water-streambed interface. © 2018 Author(s).
语种	英语
scopus关键词	Evolutionary algorithms; Flow patterns; Markov processes; Monte Carlo methods; Optimization; Stream flow; Assessment technique; Biogeochemical process; Differential Evolution; Heat transport equation; Hydraulic conditions; Markov chain Monte Carlo method; Temperature response; Water sediment interface; Uncertainty analysis
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/160075
作者单位	Banks, E.W., National Centre for Groundwater Research and Training, College of Science and Engineering, Flinders University, Adelaide, SA, Australia; Shanafield, M.A., National Centre for Groundwater Research and Training, College of Science and Engineering, Flinders University, Adelaide, SA, Australia; Noorduijn, S., National Centre for Groundwater Research and Training, College of Science and Engineering, Flinders University, Adelaide, SA, Australia; McCallum, J., National Centre for Groundwater Research and Training, College of Science and Engineering, Flinders University, Adelaide, SA, Australia; Lewandowski, J., Department Ecohydrology, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany, Geography Department, Humboldt University of Berlin, Berlin, Germany; Batelaan, O., National Centre for Groundwater Research and Training, College of Science and Engineering, Flinders University, Adelaide, SA, Australia
推荐引用方式 GB/T 7714	Banks E.W.,Shanafield M.A.,Noorduijn S.,et al. Active heat pulse sensing of 3-D-flow fields in streambeds[J],2018,22(3).
APA	Banks E.W.,Shanafield M.A.,Noorduijn S.,McCallum J.,Lewandowski J.,&Batelaan O..(2018).Active heat pulse sensing of 3-D-flow fields in streambeds.Hydrology and Earth System Sciences,22(3).
MLA	Banks E.W.,et al."Active heat pulse sensing of 3-D-flow fields in streambeds".Hydrology and Earth System Sciences 22.3(2018).