On variable density surface water–groundwater interaction: A theoretical analysis of mixed convection in a stably-stratified fresh surface water – saline groundwater discharge zone

2006 ◽  
Vol 329 (3-4) ◽  
pp. 390-402 ◽  
Author(s):  
Gudrun Massmann ◽  
Craig Simmons ◽  
Andrew Love ◽  
James Ward ◽  
Julianne James-Smith
Keyword(s):  
Surface Water ◽  
Theoretical Analysis ◽  
Mixed Convection ◽  
Groundwater Discharge ◽  
Variable Density ◽  
Discharge Zone ◽  
Saline Groundwater ◽  
Density Surface ◽  
Fresh Surface

Sedimentary biogeochemistry of an acidic, saline groundwater discharge zone in Lake Tyrrell, Victoria, Australia

1992 ◽  
Vol 96 (1-2) ◽  
pp. 53-65 ◽  
Author(s):  
Mark E. Hines ◽  
Wm.Berry Lyons ◽  
Robert M. Lent ◽  
David T. Long
Keyword(s):  
Groundwater Discharge ◽  
Discharge Zone ◽  
Saline Groundwater

scholarly journals Modeling Changes in the Composition of River Water with Discharged Wastewater: A Case Study in NW Russia

Water ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 165
Author(s):  
Alexander I. Malov ◽  
Evgeniya S. Sidkina ◽  
Mikhail V. Mironenko ◽  
Alexey S. Tyshov ◽  
Elena V. Cherkasova
Keyword(s):  
Surface Water ◽  
Chemical Elements ◽  
Conservation Status ◽  
Simplex Algorithm ◽  
Drainage Water ◽  
Discharge Zone ◽  
Mining Operations ◽  
Diamond Deposit ◽  
Further Development

The technogenic impact of the development of the Lomonosov diamond deposit is associated with the discharge of quarry and drainage water into the river, which has a special conservation status. Earlier studies on the composition of bottom sediments showed that there are signs of increased accumulation of heavy metals and radionuclides at wastewater discharge sites. The purpose of this work was to predict changes in the composition of surface water and bottom sediment in the river during the further development of mining operations with brackish and salty water captured by drainage systems, the presence of which was established in the zone of their future influence. For this, a simulation of changes in the composition of the water in the river was carried out using the GEOCHEQ software package by minimizing the free energy of the system using a convex simplex algorithm. It was found that the maximum salinity of surface water can reach 1.51 g/L. In this case, the MPC of Cl−, Na+, SO42−, Mg2+, Sr, V, and U can be exceeded for fishery watercourses. The genetic basis of the accumulation of these components in solutions for mixing was considered. According to the calculations, when about 5000 m3/h of drainage water is discharge d into the river, the mass of precipitated chemical elements will be 56–191 t/h, including up to 2.1 t/h of iron; therefore, accumulation in the discharge zone must be controlled.

scholarly journals A Hydrologic Landscapes Perspective on Groundwater Connectivity of Depressional Wetlands

Water ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 50 ◽  
Author(s):  
Brian P. Neff ◽  
Donald O. Rosenberry ◽  
Scott G. Leibowitz ◽  
Dave M. Mushet ◽  
Heather E. Golden ◽  
...  
Keyword(s):  
Surface Water ◽  
Water Table ◽  
Conceptual Knowledge ◽  
Groundwater Discharge ◽  
Depressional Wetlands ◽  
Hydrologic Connectivity ◽  
Site Specific ◽  
Depressional Wetland ◽  
Resource Managers ◽  
Flow Through

Research into processes governing the hydrologic connectivity of depressional wetlands has advanced rapidly in recent years. Nevertheless, a need persists for broadly applicable, non-site-specific guidance to facilitate further research. Here, we explicitly use the hydrologic landscapes theoretical framework to develop broadly applicable conceptual knowledge of depressional-wetland hydrologic connectivity. We used a numerical model to simulate the groundwater flow through five generic hydrologic landscapes. Next, we inserted depressional wetlands into the generic landscapes and repeated the modeling exercise. The results strongly characterize groundwater connectivity from uplands to lowlands as being predominantly indirect. Groundwater flowed from uplands and most of it was discharged to the surface at a concave-upward break in slope, possibly continuing as surface water to lowlands. Additionally, we found that groundwater connectivity of the depressional wetlands was primarily determined by the slope of the adjacent water table. However, we identified certain arrangements of landforms that caused the water table to fall sharply and not follow the surface contour. Finally, we synthesize our findings and provide guidance to practitioners and resource managers regarding the management significance of indirect groundwater discharge and the effect of depressional wetland groundwater connectivity on pond permanence and connectivity.

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