scholarly journals Sediment-organism interaction as a control on hyporheic exchange flows: effect of body size of the organisms

2021 ◽  
Author(s):  
Shivansh Shrivastava ◽  
Michael Stewardson ◽  
Meenakshi Arora
Keyword(s):  
Body Size ◽  
Hyporheic Exchange ◽  
Exchange Flows

scholarly journals Toward a conceptual framework of hyporheic exchange across spatial scales

2018 ◽  
Author(s):  
Chiara Magliozzi ◽  
Robert Grabowski ◽  
Aaron I. Packman ◽  
Stefan Krause
Keyword(s):  
Conceptual Framework ◽  
Hyporheic Zone ◽  
Spatial Scales ◽  
Temporal Variations ◽  
Hyporheic Exchange ◽  
Catchment Management ◽  
Spatial And Temporal Scales ◽  
Exchange Flows ◽  
Modelling Studies ◽  
And Control

Abstract. Rivers are not isolated systems but interact continuously with groundwater from their confined headwaters to their wide lowland floodplains. In the last few decades, research on the hyporheic zone (HZ) has increased appreciation of the hydrological importance and ecological significance of connected river and groundwater systems. While recent studies have investigated hydrological, biogeochemical and ecohydrological processes in the HZ at bedform and reach scales, a comprehensive understanding of process-based interactions between factors operating at different spatial and temporal scales driving hyporheic exchange flows (HEF) at large and reach scale is still missing. Therefore, this review summarizes the factors and processes at catchment, valley and reach scales that interact and control spatial and temporal variations in hyporheic exchange flows. By using a multi-scale perspective, this review connects field observations and modelling studies to identify process driving patterns and dynamics of HEF. Finally, the influence of process interactions over multiple spatial scales is illustrated in a case study, supported by new GIS analyses, which highlights the importance of valley scale factors to the expression of HEF at the reach scale. This conceptual framework will aid the development of approaches to interpret hyporheic exchange across scales, infer scaling relationships, and inform catchment management decisions.

New Insights on Scale-dependent Surface-Groundwater Exchange from a Floating Self-potential Dipole

2018 ◽  
Vol 23 (2) ◽  
pp. 261-287
Author(s):  
Scott J. Ikard ◽  
Andrew P. Teeple ◽  
Jason D. Payne ◽  
Gregory P. Stanton ◽  
J. Ryan Banta
Keyword(s):  
Surface Water ◽  
Flow Patterns ◽  
Hyporheic Exchange ◽  
Two Dimensional ◽  
Exchange Flows ◽  
Guadalupe River ◽  
Groundwater Exchange ◽  
Self Potential ◽  
Ambient Groundwater ◽  
Water Borne

In south-central Texas the lower Guadalupe River has incised into the outcrop of the Carrizo-Wilcox aquifer. The river and the aquifer are hydraulically connected across the outcrop, although the connectivity is obscured at the surface by alluvium and surface-water and groundwater exchange dynamics are currently poorly understood. To investigate surface-water and groundwater exchange dynamics between the lower Guadalupe River and the Carrizo-Wilcox aquifer, a geophysical study was completed along a 14.86 km reach of the river by using water-borne gradient self-potential (SP) profiling and two-dimensional direct-current electric resistivity tomography. This paper explores the applicability of these water-borne geoelectric methods in delineating gaining and losing channel reaches, and demonstrates that geoelectric signals in the form of total electric field strength can be logged with an electric dipole and decomposed into component SP signals depicting regional and local groundwater flow patterns attributable to regional and localized hydraulic gradients. Localized SP anomalies of several tens of millivolts, indicative of hyporheic exchange flows, are observed and superimposed upon a 124 mV regional SP anomaly indicative of ambient groundwater exchange flows between the river and the aquifer. The observed SP signals are interpreted through two-dimensional finite-element modeling of streaming potentials attributable to ambient groundwater exchange and hyporheic exchange flow patterns. Variables of the channel environment such as temperature and concentration gradients, depth, and velocity are considered and subsequently eliminated as alternative sources of the SP signals that are presented.

scholarly journals Supplementary material to "Scaling down hyporheic exchange flows: from catchments to reaches"

2017 ◽  
Author(s):  
Chiara Magliozzi ◽  
Robert Grabowski ◽  
Aaron I. Packman ◽  
Stefan Krause
Keyword(s):  
Hyporheic Exchange ◽  
Exchange Flows ◽  
Supplementary Material ◽  
Scaling Down

scholarly journals ANALYSIS OF THE INFLUENCE OF FERRICRETE ON HYPORHEIC EXCHANGE FLOWS

2020 ◽  
Author(s):  
Ariel Rickel ◽  
◽  
Beth Hoagland ◽  
Alexis K. Navarre-Sitchler ◽  
Kamini Singha
Keyword(s):  
Hyporheic Exchange ◽  
Exchange Flows

scholarly journals Toward a conceptual framework of hyporheic exchange across spatial scales

2018 ◽  
Vol 22 (12) ◽  
pp. 6163-6185 ◽  
Author(s):  
Chiara Magliozzi ◽  
Robert C. Grabowski ◽  
Aaron I. Packman ◽  
Stefan Krause
Keyword(s):  
Conceptual Framework ◽  
Hyporheic Zone ◽  
Spatial Scales ◽  
Temporal Variations ◽  
Hyporheic Exchange ◽  
Catchment Management ◽  
Spatial And Temporal Scales ◽  
Exchange Flows ◽  
Modelling Studies ◽  
Isolated Systems

Abstract. Rivers are not isolated systems but interact continuously with groundwater from their confined headwaters to their wide lowland floodplains. In the last few decades, research on the hyporheic zone (HZ) has increased appreciation of the hydrological importance and ecological significance of connected river and groundwater systems. While recent studies have investigated hydrological, biogeochemical and ecohydrological processes in the HZ at bedform and reach scales, a comprehensive understanding of process-based interactions between factors operating at different spatial and temporal scales driving hyporheic exchange flows (HEFs) at reach scale and larger is still missing. Therefore, this review summarizes the factors and processes at catchment, valley, and reach scales that interact to control spatial and temporal variations in hyporheic exchange flows. By using a multi-scale perspective, this review connects field observations and modelling studies to identify the process driving patterns and dynamics of HEF. Finally, the influence of process interactions over multiple spatial scales is illustrated in a case study, supported by new GIS analyses, which highlights the importance of valley-scale factors to the expression of HEF at the reach scale. This conceptual framework will aid the development of approaches to interpret hyporheic exchange across scales, infer scaling relationships, and inform catchment management decisions.

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