Author(s)

Qiao Su^1,2*, Xingyong Xu^1,2, Wenquan Liu^1,2, Guangquan Chen^1,2, Tengfei Fu^1,2

¹Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, China.
²Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.

Seawater intrusion is a global environmental problem that is becoming increasingly severe with the overexploitation of underground freshwater in coastal regions and sea-level rise caused by global climate change. Although a series of achievements has been made on seawater intrusion, the role of tidal effects has not been fully revealed. In this paper, a typical case of tidal effects on seawater intrusion is provided. The high-density resistivity method was applied to the high-frequency continuous measurement of the stratigraphic resistance of the south coast of the Laizhou Bay, followed by the panel data analysis method. The results indicate that the formation resistivity in coastal area was affected by the tidal level significantly, particularly in the seawater intrusion channel. The effect of tide on the intensity distribution of formation resistivity was evaluated using this method. Because of the presence of a brine layer in the section, the trends of the tidal level effect on the formation resistivity in the left and right sides of the section were opposite, and the intensity of the effect increased sideways.

Seawater Intrusion, Tidal, the High-Density Resistivity Method, Panel Data

Su, Q. , Xu, X. , Liu, W. , Chen, G. and Fu, T. (2017) Effect of Tides on the Stratigraphic Resistance of the South Coast of the Laizhou Bay. Journal of Water Resource and Protection, 9, 590-600. doi: 10.4236/jwarp.2017.96039.