scholarly journals Combined use of thermal methods and seepage meters to efficiently locate, quantify, and monitor focused groundwater discharge to a sand-bed stream

2016 ◽  
Vol 52 (6) ◽  
pp. 4486-4503 ◽  
Author(s):  
Donald O. Rosenberry ◽  
Martin A. Briggs ◽  
Geoffrey Delin ◽  
Danielle K. Hare
Keyword(s):  
Groundwater Discharge ◽  
Thermal Methods ◽  
Seepage Meters ◽  
Combined Use

Submarine groundwater discharge measured by seepage meters in sicilian coastal waters

2006 ◽  
Vol 26 (7) ◽  
pp. 835-842 ◽  
Author(s):  
Makoto Taniguchi ◽  
William C. Burnett ◽  
Henrieta Dulaiova ◽  
Evgeny A. Kontar ◽  
Pavel P. Povinec ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Submarine Groundwater Discharge ◽  
Groundwater Discharge ◽  
Seepage Meters ◽  
Submarine Groundwater

Identification of Groundwater Discharge Zones in a Reach of Hillman Creek in Southern Ontario

1978 ◽  
Vol 13 (1) ◽  
pp. 121-134 ◽  
Author(s):  
David Robert Lee ◽  
H.B.N. Hynes
Keyword(s):  
Groundwater Discharge ◽  
Specific Conductance ◽  
Agricultural Watershed ◽  
Discharge Zone ◽  
Seepage Rate ◽  
Small Stream ◽  
Paired Samples ◽  
Seepage Meters ◽  
Seepage Meter ◽  
Chemical Inputs

Abstract Several new techniques were used to identify zones of groundwater and contaminant inflow to the headwaters area of a small stream draining an agricultural watershed in southwestern Ontario. Along a 3 km length of stream, seepage meters were used to measure and collect seepage flux and mini-piezometers were used to measure piezometric head relative to the stream and to collect pore water 0.6 m below the streambed. Measurement of seepage flux at 43 locations along a 3 km segment of Hillman Creek showed that most of the study section was a groundwater discharge zone. Spatial differences in seepage flux ranged from less than 0.001 to nearly 9 cm m s 1. During the growing season there was a marked diurnal change in seepage rate at several locations and this was also reflected by a corresponding change in stream discharge. Paired samples, one from a piezometer 0.6 m below streambed and one from the adjacent seepage meter, were significantly correlated (P < 0.01) with respect to specific conductance, chloride and inorganic carbon concentration. This suggested that in many instances site-specific estimates of chemical inputs from groundwater to surface water can be estimated quickly without the necessity of allowing natural groundwater flow to flush out the water initially trapped within the seepage container. Seepage meters can be used to measure seepage flux and the small piezometers can be used to obtain samples. The concentrations of non-conservative solutes (organic carbon, nitrate + nitrite nitrogen, and phospate) in seepage meter samples were not significantly correlated with the concentrations in corresponding mini-piezometer samples.

scholarly journals Multi-scale evaluations of submarine groundwater discharge

2015 ◽  
Vol 365 ◽  
pp. 66-71 ◽  
Author(s):  
M. Taniguchi ◽  
M. Ono ◽  
M. Takahashi
Keyword(s):  
Submarine Groundwater Discharge ◽  
Groundwater Discharge ◽  
Daily Basis ◽  
Sea Level Changes ◽  
Point Scale ◽  
Multi Scale ◽  
Seepage Meters ◽  
Seepage Meter ◽  
Submarine Groundwater ◽  
Made In

Abstract. Multi-scale evaluations of submarine groundwater discharge (SGD) have been made in Saijo, Ehime Prefecture, Shikoku Island, Japan, by using seepage meters for point scale, 222Rn tracer for point and coastal scales, and a numerical groundwater model (SEAWAT) for coastal and basin scales. Daily basis temporal changes in SGD are evaluated by continuous seepage meter and 222Rn mooring measurements, and depend on sea level changes. Spatial evaluations of SGD were also made by 222Rn along the coast in July 2010 and November 2011. The area with larger 222Rn concentration during both seasons agreed well with the area with larger SGD calculated by 3D groundwater numerical simulations.

scholarly journals Evaluation of Temperature Profiling and Seepage Meter Methods for Quantifying Submarine Groundwater Discharge to Coastal Lagoons: Impacts of Saltwater Intrusion and the Associated Thermal Regime

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1648 ◽  
Author(s):  
Joel Tirado-Conde ◽  
Peter Engesgaard ◽  
Sachin Karan ◽  
Sascha Müller ◽  
Carlos Duque
Keyword(s):  
Thermal Regime ◽  
Coastal Lagoons ◽  
Groundwater Discharge ◽  
Thermal Methods ◽  
Fresh Groundwater ◽  
Lagoon Water ◽  
Seepage Meter ◽  
Vertical Heterogeneity ◽  
Key Factor ◽  
Heat Transport Equation

Surface water-groundwater interactions were studied in a coastal lagoon performing 180 seepage meter measurements and using heat as a tracer in 30 locations along a lagoon inlet. The direct seepage meter measurements were compared with the results from analytical solutions for the 1D heat transport equation in three different scenarios: (1) Homogeneous bulk thermal conductivity (Ke); (2) horizontal heterogeneity in Ke; and (3) horizontal and vertical heterogeneity in Ke. The proportion of fresh groundwater and saline recirculated lagoon water collected from the seepage experiment was used to infer the location of the saline wedge and its effect on both the seepage meter results and the thermal regime in the lagoon bed, conditioning the use of the thermal methods. The different scenarios provided the basis for a better understanding of the underlying processes in a coastal groundwater-discharging area, a key factor to apply the best-suited method to characterize such processes. The thermal methods were more reliable in areas with high fresh groundwater discharge than in areas with high recirculation of saline lagoon water. The seepage meter experiments highlighted the importance of geochemical water sampling to estimate the origin of the exchanged water through the lagoon bed.

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