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Volume 11 - Winter and Spring 2019                   ijmt 2019, 11 - Winter and Spring 2019: 41-51 | Back to browse issues page

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Rezapour A, Saghravani F, Ahmadyfard A, Rezapour M. Transient Behavior of Saltwater Wedge and Mixing Zone in Head-Controlled Coastal Aquifer: Experimental Measurements and Numerical Modeling . ijmt. 2019; 11 :41-51
URL: http://ijmt.ir/article-1-653-en.html
1- Department of Civil Engineering, Birjand University of Technology
2- Department of Civil Engineering, Shahrood University of Technology
3- Department of Electrical Engineering, Shahrood University of Technology
4- Department of Civil Engineering, Chabahar Maritime University
Abstract:   (1393 Views)
Saltwater intrusion is a transient process that affects the coastal aquifers quality and hydrodynamics. The transient behavior of the saltwater wedge (SW) and mixing zone (MZ) due to the changes of the inland freshwater head was investigated through experimental and numerical approaches using image processing technique and the numerical code SUTRA. To acquire data in the transient conditions, automated algorithms were designed and employed for both methods. Numerical simulations were extended to a reference problem of field scale for further study of the transient aspect of the saltwater intrusion phenomena. The results demonstrated that the behavior of SW area is significantly similar to the behavior of SW toe length in transient conditions. Also, in the advancing case, the SW height reaches the steady state condition much sooner than the SW toe length and the SW area, while in the receding case, all the three indicators are stabilized almost simultaneously. Furthermore, the results showed that the MZ expanded at early stages of the receding and after a while condensed again gradually until it finally reaches to its original state at the beginning of the advancing case. Although local velocity of brackish water toward sea boundary in the dilute region of the MZ is more than in the dense region, the flushing and mixing process causes to increase the MZ in the receding case. Sensitivity analyzes showed that the speed of SW advancing or receding does not affect the MZ thickness in a steady state condition.
Full-Text [PDF 969 kb]   (376 Downloads)    
Type of Study: Research Paper |
Received: 2018/12/6 | Accepted: 2019/02/21

1. Kuan, W. K., Jin, G., Xin, P., Robinson, C., Gibbes, B. Li, L., (2012), Tidal influence on seawater intrusion in unconfined coastal aquifers. Water Resources Research, 48:W02502 [DOI:10.1029/2011WR010678]
2. Chang, S. W., Clement, T. P., (2012), Experimental and Numerical Investigation of Saltwater Intrusion Dynamics in Flux-Controlled Groundwater Systems. 48(March), 1-10. [DOI:10.1029/2012WR012134]
3. Werner, A.D. et al. (2013), Seawater Intrusion Processes, Investigation and Management: Recent Advances and Future Challenges, Advances in Water Resources, 51: 3-26. [DOI:10.1016/j.advwatres.2012.03.004]
4. Barlow, P.M., (2003), Ground Water in Freshwater-Saltwater Environments of the Atlantic coast. U.S. Geological Survey Circular 1262. [DOI:10.3133/cir1262]
5. Price, R.M., Top, Z., Happell, J. D., Swart, P.K., (2003), Use of tritium and helium to define groundwater flow conditions in Everglades National Park [DOI:10.1029/2002WR001929]
6. Cherry, G. S., (2006), U.S. Geological Survey Georgia Water Science Center and City of Brunswick-Glynn County Cooperative Water Program - Summary of Activities, July 2005 through June 2006, U.S.G.S. Open-File Report 2006-1368. [DOI:10.3133/ofr20061368]
7. Abarca, E., Clement, T. P., (2009), A Novel Approach for characterizing the mixing zone of a Saltwater Wedge, Geophysical Research Letters. 36(6). 1-5. [DOI:10.1029/2008GL036995]
8. Goswami, R. R., Clement, T. P, (2007), Laboratory-Scale Investigation of Saltwater Intrusion Dynamics, Water Resources Research. 43(4), 1-11. [DOI:10.1029/2006WR005151]
9. Luyun, R, Momii, K. and Nakagawa, K., (2009), Laboratory-Scale Saltwater Behavior due to Subsurface Cutoff Wall. Journal of Hydrology. 377(3-4), 227-36. [DOI:10.1016/j.jhydrol.2009.08.019]
10. Luyun, R., Momii, K., Nakagawa, K., (2011), Effects of recharge wells and flow barriers on seawater intrusion. Ground Water 49, 239e249 [DOI:10.1111/j.1745-6584.2010.00719.x]
11. Mehdizadeh, S., Werner, A. D., Vafaie, F., and Badaruddin, S., (2014), Vertical Leakage in Sharp-Interface Seawater Intrusion Models of Layered Coastal Aquifers, Journal of Hydrology. 519, 1097-1107. [DOI:10.1016/j.jhydrol.2014.08.027]
12. Oz, I., Shalev, E., Yechieli, Y., Gavrieli, I., Gvirtzman, H., (2014), Flow Dynamics and Salt Transport in a Coastal Aquifer Driven by a Stratified Saltwater Body: Lab Experiment and Numerical Modeling, Journal of Hydrology 511: 665-74. [DOI:10.1016/j.jhydrol.2014.02.020]
13. Oz, I., Shalev, E., Yechieli, Y., and Gvirtzman, H. (2015), Saltwater Circulation Patterns within the Freshwater-Saltwater Interface in Coastal Aquifers: Laboratory Experiments and Numerical Modeling. Journal of Hydrology 530: 734-41. [DOI:10.1016/j.jhydrol.2015.10.033]
14. Robinson, G., Hamill, G. A., Ahmed A. A., (2015), Automated Image Analysis for Experimental Investigations of Salt Water Intrusion in Coastal Aquifers. Journal of Hydrology. 530: 350-60. [DOI:10.1016/j.jhydrol.2015.09.046]
15. Lu, Chunhui, Yiming Chen, Chang Zhang, and Jian Luo, (2013), Steady-State Freshwater-Seawater Mixing Zone in Stratified Coastal Aquifers. Journal of Hydrology, 505: 24-34. [DOI:10.1016/j.jhydrol.2013.09.017]
16. Rezapoor, A. A., Saghravani.S. F., Ahmadifard, A. R., (2018), (in Farsi), Study of saltwater intrusion phenomenon in the coastal aquifers under transient condition using image processing and numerical modelling. Journal of hydraulics. 13(2), 69-82.
17. Abarca, E., Carrera, J., Sánchez-Vila, X., Dentz, M., (2007), Anisotropic Dispersive Henry Problem. Advances in Water Resources. 30(4). 913-926. [DOI:10.1016/j.advwatres.2006.08.005]
18. Simpson, M. J., and Clement, T. P., (2004), Improving the Worthiness of the Henry Problem as a Benchmark for Density-Dependent Groundwater Flow Models. Water Resources Research. 40(1), 1-12. [DOI:10.1029/2003WR002199]
19. Held, R., Attinger, S., Kinzelbach, W., (2005), Homogenization and Effective Parameters for the Henry Problem in Heterogeneous Formations. Water Resources Research. 41(11), 1-14. [DOI:10.1029/2004WR003674]
20. Sanz, E., Voss, C. I., (2006), Inverse Modeling for Seawater Intrusion in Coastal Aquifers: Insights about Parameter Sensitivities, Variances, Correlations and Estimation Procedures Derived from the Henry Problem. Advances in Water Resources. 29(3): 439-57. [DOI:10.1016/j.advwatres.2005.05.014]
21. Sebben, M.L., Werner, A.D., (2015), Seawater intrusion in fractured coastal aquifers: a Preliminary numerical investigation using a fractured Henry problem. Adv. Water Resour. 85, 93-108. [DOI:10.1016/j.advwatres.2015.09.013]
22. Paster, A., Dagan, G., (2007), Mixing at the Interface between Two Fluids in Porous Media: A Boundary-Layer Solution. Journal of Fluid Mechanics 584: 455. http://www.journals.cambridge.org/abstract_S0022112007006532. [DOI:10.1017/S0022112007006532]
23. Oostrom, M., Hayworth, J. S., Dane, J. H., Guven, O., (1992), Behavior of dense aqueous phase leachate plumes in homogenous porous media, Water Resour [DOI:10.1029/92WR00711]
24. Voss, C., Provost, A., (2010), SUTRA-a Model for Saturated-unsaturated, Variabledensity Ground-water Flow with Solute or Energy Transport, U.S Geological Survey Water-Resources Investigations Report, 02-4231.
25. Lu, C., Werner, A. D., (2013), Advances in Water Resources Timescales of Seawater Intrusion and Retreat, Advances in Water Resources 59, 39-51. [DOI:10.1016/j.advwatres.2013.05.005]
26. Robinson, G., Ahmed, A. A., Hamill, G. A., (2016), Experimental Saltwater Intrusion in Coastal Aquifers Using Automated Image Analysis: Applications to Homogeneous Aquifers, Journal of Hydrology 538: 304-13. [DOI:10.1016/j.jhydrol.2016.04.017]
27. Watson, T. A., Werner, A. D., Simmons, C. T., (2010), Transience of seawater intrusion in response to sea level rise. Water Resource. Res. 46, W12533, [DOI:10.1029/2010WR009564]

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