The underground water hydrochemical characteristics in eastern and southern coasts of the Laizhou Bay

Abstract

Abstract: The chemical composition of underground water samples in the coast area of Laizhou Bay was analyzed. The results show that: (1)the correlative coefficient among Na⁺、Cl^-and TDS of the underground water reached significant level in seawater intrusion area in eastern and southern coasts of the Laizhou Bay, while that in the underground fresh water was much less. The correlative coefficient among K⁺、Ca²⁺、Mg²⁺、SO^2-₄ and TDS of the underground water in seawater intrusion area reached a high level; (2)according to the characteristics of ionic ratio, the degree of ion exchange of the groundwater in the seawater intrusion area of southern Laizhou Bay is generally higher than that in the eastern coast, and its history of desalination is also longer than that in the eastern coast; (3) relative error between the calculated values of TDS by using the data of electrical conductivity and the the measured values was vary small in the coast area of Laizhou Bay, so the electrical conductivity was suggested as a substitute indicator for TDS.

Key words: Laizhou Bay, seawater intrusion, hydrochemistry, electrical conductivity

SU Qiao, YU Hong-jun, XU Xing yong, YAO Jing. The underground water hydrochemical characteristics in eastern and southern coasts of the Laizhou Bay[J]. Journal of Marine Sciences, 2012, 30(3): 49-53.

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