Một số kết quả nghiên cứu dự báo xâm nhập mặn nước dưới đất vùng ven biển tỉnh Sóc Trăng

Bài viết trình bày mô hình dòng chảy với tỷ trọng nước thay đổi SEAWAT đư c ứng ng để ự báo xâm nhập mặn cho tầng chứa nước olocen (qh) và Pleistocen trên (qp3) của v ng th o ịch bản quy hoạch khai thác sử d ng nước. | Một số kết quả nghiên cứu dự báo xâm nhập mặn nước dưới đất vùng ven biển tỉnh Sóc Trăng Vietnam Journal of Marine Science and Technology Vol. 19 No. 3B 2019 203 212 DOI https 1859-3097 19 3B 14526 https jmst Some results of research and forecasting of groundwater salinization in the coastal zone of Soc Trang province Nguyen Thi Nhan1 Dang Tran Trung2 Bui Thi Bao Anh1 Nguyen Xuan Tung1 Nguyen Xuan Thanh1 1 Institute of Marine Geology and Geophysics VAST Vietnam 2 Center for Water Resources Monitoring and Forecast Ministry of Natural Resources and Environment Vietnam E-mail nhantn10@ Received 25 July 2019 Accepted 6 October 2019 2019 Vietnam Academy of Science and Technology VAST Abstract In recent years the situation of salinity intrusion is very complicated and becomes more serious in the coastal area of Soc Trang province. In this research SEAWAT modified water density flow model was used to forecast the salinity intrusion for Holocene aquifer qh and upper Pleistocene aquifer qp3 according to the water use planning scenario. The results show that the impact of groundwater extraction process increases the TDS content in the aquifer the salt water fresh water areas change over time the trend of salinity change increases. In Holocene aquifer salt water area is relatively large and the TDS concentration increases towards the sea however fresh water area changes inconsiderably In 2015 accounting for and by 2030 accounting for of aquifer area. In upper Pleistocene aquifer the fresh water area declines significantly In 2015 accounting for and by 2030 only accounting for of aquifer area. Keywords SEAWAT model salinity intrusion salinity forecasting aquifer Soc Trang coastal area. Citation Nguyen Thi Nhan Dang Tran Trung Bui Thi Bao Anh Nguyen Xuan Tung Nguyen Xuan Thanh 2019. Some results of research and forecasting of groundwater salinization in the coastal zone of Soc Trang province. Vietnam .