TY JOUR TI Estimation of Groundwater Recharge from Rainfall for Arid Coastal Plain of Ninh Thuan Province, Vietnam KW tropical savannah climate KW drought KW moisture transfer KW finite element (FE) KW higher-order element function JO Russian Journal of Earth Sciences AU Nguyen, V.. AU Trinh, T.. AU Shakirov, R.. AU Tran, T.. AU Syrbu, N.. PY 2022 IS 22 PB Geophysical Center of the Russian Academy of Sciences