Study on the Hydraulic Connectivity between Holocene and Pleistocene Aquifers and the Red River in Hưng Yên City Area
Main Article Content
Abstract
The groundwater system in Bắc Bộ plain in general and in Hưng Yên province in particular consists of Holocene aquifers and Pleistocene aquifers. Analysis of the hydraulic connectivity between the Holocene and Pleistocene aquifers plays an important decision on that which conceptual groundwater model is. The latter then decides various analyses regarding the groundwater hydraulic and dynamic regime, the formation of groundwater chemical compounds resulted from different mixing mechanisms, the structure of the groundwater system to be used in numerical simulation etc. This paper focused on the clarification of the hydraulic connectivity between the Holocene aquifer and lower Pleistocene aquifers and their hydraulic connectivity with the main rivers in the area. Comprehensive analysis of the groundwater monitoring water levels with use of the hydraulic parameters of the aquifers, river water level fluctuation had been carried out. The results have shown that there is a negligible hydraulic connectivity between the Holocene and Pleistocene aquifers in Hưng Yên province. The fluctuation of groundwater level of lower Pleistocene aquifer has been proved to be dominated by the large river such as the Red river and Đuống river by an analytical analysis and finite element modeling. The results of application of finite element modeling had been compared with the analytical results and demonstrated a good match. An important conclusion was made that groundwater resources potential thanks to the Red river for the water needs of the area.
Keywords: Groundwater, Bắc Bộ plain, Holocene, Pleistocene, Spearman correlation, Pearson Correlation, Hydraulic Connectivity, Hydraulic Parameters, FEM.
References
[2] Nguyen Duc Roi, 2014. Estimation of groundwater recharge of the Holocen aquifer from rainfall by RIB method for Hung Yen province. VNU Journal of Science: Earth and Environmental Sciences, Vol. 30, No. 4 (2014) 49-63.
[3] Hung Yen DoNRE, 2014. Report on water resources utilization and abstraction in 2014. Hung Yen DoNRE (in Vietnamese).
[4] Mironenco V.A. and Shestakov V.M., 1974. Fundamentals of Hydrogeomechanics. Publisher "Nedra". Former USSR (in Russian).
[5] Polubarinova-Kochina, 1977. Theory of groundwater movement. Russian Scientific Publishers. Moscow, Russia.
[6] Chau Van Quynh, 1996. Report on groundwater exploitation exploration of Cam Giang- Hai Duong and My Van- Hung Yen area. Department of geology and mineral resources-MoNRE (in Vietnamese).
[7] Chau Van Quynh, Nguyen Thi Tam, 1998. Report on groundwater exploitation exploration of Hung Yen town. Department of geology and mineral resources-MoNRE (in Vietnamese).
[8] Phan Xuan Hai, 1984. Report on groundwater exploration of An Thi area-Hung Yen scale 1:50,000. Department of geology and mineral resources-MoNRE (in Vietnamese).
[9] Nguyen Van Hoang, 2000. Determination of optimal groundwater pumping at Phap Van-Hanoi pumping field: dynamic programming embedding with finite element. Vietnam Geotechnical Journal, No. 1/2000, pp 14-22 (in Vietnamese).
[10] Tran Minh, 1984. Report on detailed groundwater exploration for Hanoi-Vietnam. Northern Department of Water Resources Planning and Investigation-MoNRE (in Vietnamese).
[11] Nguyen Van Hoang, 2014-2016. Project ĐT.NCCB-ĐHUD.2012-G/04 "Costruction of groundwater flow and groundwater salinity advection-dispersion transport finite element software - Application to the central coastal area". [Nguyễn Văn Hoàng, 2014-2016. Đề tài mã số ĐT.NCCB-ĐHUD.2012-G/04 "Nghiên cứu xây dựng phần mềm mô hình phần tử hữu hạn mô phỏng chuyển động và lan truyền các chất ô nhiễm và nhiễm mặn trong môi trường nước dưới đất - ứng dụng cho khu vực ven biển miền Trung"].
[12] O.C. Zienkiewics and K. Morgan, 1983. Finite Elements and Approximation. John Willey & Sons.