Hydrogeochemical characteristics of typical seawater intrusion in Xingcheng City

ZHANG Yaowen; LI Haijun; ZHAO Qian; JIA Jinjun; WANG He

doi:10.16028/j.1009-2722.2023.291

2024 Vol. 40, No. 8

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Article navigation > Marine Geology Frontiers > 2024 > 40(8): 32-41

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ZHANG Yaowen, LI Haijun, ZHAO Qian, JIA Jinjun, WANG He. Hydrogeochemical characteristics of typical seawater intrusion in Xingcheng City[J]. Marine Geology Frontiers, 2024, 40(8): 32-41. doi: 10.16028/j.1009-2722.2023.291

Citation:

ZHANG Yaowen, LI Haijun, ZHAO Qian, JIA Jinjun, WANG He. Hydrogeochemical characteristics of typical seawater intrusion in Xingcheng City[J]. Marine Geology Frontiers, 2024, 40(8): 32-41. doi: 10.16028/j.1009-2722.2023.291

Hydrogeochemical characteristics of typical seawater intrusion in Xingcheng City

1.
Institute of Disaster Prevention Science and Technology, Langfang 065201, China
2.
Hebei Key Laboratory of Resource and Environmental Disaster Mechanism and Risk Monitoring, Langfang 065201, China
3.
School of Earth Science and Engineering, Hohai University, Nanjing 210000, China
4.
The 4^th Hydrogeology Engineering Geological Team, Geology and Mineral Exploration and Development Bureau of Hebei Province, Cangzhou 061000, China

More Information

Corresponding author: LI Haijun, lhjun777@cidp.edu.cn

Received Date: 24 December 2023

Publish Date: 28 August 2024

Abstract

Abstract

To reveal the evolution of groundwater chemical composition and the complex hydrogeochemical interactions due to the seawater intrusion in Xingcheng coastal plain, Liaoning, NE China, 44 groundwater samples and 1 seawater sample were collected from the Caozhuang Town section at Xingcheng River to Shahouzuo Town section at Yantai River. The chemical composition, and hydrogen and oxygen isotopes of the samples were determined. The hydrogeochemical characteristics and formation processes in typical seawater intrusion areas and their variations were analyzed. Results show that, the chemical field of groundwater in the area exhibited obvious horizontal zonation, and the water quality changed from freshwater to brackish water and to saline water successively from inland to coastal areas. The chemical types of groundwater were mainly HCO₃-Ca, HCO₃·Cl-Ca, and SO₄-Ca, while those of brackish water and salt water were mainly Cl-Na or Cl-Ca. Groundwater in the area was recharged by mainly atmospheric precipitation, with groundwater in the inland freshwater mainly controlled by dissolution and filtration processes, while brackish water was influenced by evaporation and mixing processes, leading to oxygen drift; The mixing ratio of seawater represented by Cl component with freshwater in brackish water ranges from 0.45% to 3.46%, while the mixing ratio of saline water was about 15.85%. The formation of brackish water and saline water was due to the combined effects of mixing, evaporation concentration, and cation exchange adsorption.
- Xingcheng coastal plain area /
- isotope characteristics /
- hydrochemical types /
- seawater intrusion

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