Dr. Yi Liu

Research Interest

Focus on coastal hydrogeology and biogeochemistry:

  • Seawater intrusion and submarine groundwater discharge (SGD
  • Contaminant/solute transport and density flow and free convection in coastal area
  • Isotopic geochemistry (Ra & Rn); Biogeochemistry (C, N, Fe, & Mn) in coastal groundwater system (wetlands, tidal creek, mangroves, swamps, sandy beach)
  • Greenhouse gas (CH4, CO2 & N2O) emission from surface water bodies (headwater streams, rivers, estuaries, and harbors)


  • 2013-2017: Ph.D., Hydrogeology, The University of Hong Kong, Hong Kong
  • 2010-2012: M.Sc., Hydrology and Water Resources, China Agricultural University, Beijing, China
  • 2006-2010: B.Sc., Hydropower Engineering, China Agricultural University, Beijing, China

Research Experiences

    2017.10 – 2018.12:

  • Investigations of greenhouse gas emission and carbon cycle in coastal areas including the intertidal aquifer.
  • Impact study of Carven Sewage Treatment System on Regional groundwater flow
  • 2013.09 – 2017.08:

  • SGD studies in Tolo Harbor, Hong Kong (RGC HKU702611; Seed Found of Basic Research, HKU, and RGC NO. 6001-14G)
  • The investigation of submarine groundwater discharge and associated nutrient fluxes in South China Sea (NSFC, NO. 41372261 and HK RGC NO.7028/06P
  • 2010.09 – 2012.06:

  • Beijing science and technology plan project —“The allocation technology research of the ecological water resources for Yongding River”
  • “Channel-Layered Vadose Zone-Groundwater system evolution mechanism and simulation” (NSFC)

Selected Publications

  • Liu, Y., Not, C., Jiao, J.J., Liang, W., Lu, M., 2019. Tidal induced dynamics and geochemical reactions of trace metals (Fe, Mn, and Sr) in the salinity transition zone of an intertidal aquifer. Science of The Total Environment, 664: 1133-1149.
  • Liu, Y., Liang, W., & Jiao, J. J. (2018). Seasonality of Nutrient Flux and Biogeochemistry in an Intertidal Aquifer. Journal of Geophysical Research: Oceans, 123(9), 6116-6135. doi:10.1029/2018jc014197
  • Liu, Y., Jiao, J. J., Liang, W., & Luo, X. (2018). Using Tidal Fluctuation-Induced Dynamics of Radium Isotopes (224Ra, 223Ra, and 228Ra) to Trace the Hydrodynamics and Geochemical Reactions in a Coastal Groundwater Mixing Zone. Water Resources Research, 54(4), 2909-2930. doi:doi:10.1002/2017WR022456
  • Liu, Y., Jiao, J. J., & Liang, W. (2018). Tidal Fluctuation Influenced Physicochemical Parameter Dynamics in Coastal Groundwater Mixing Zone. Estuaries and Coasts, 41(4), 988-1001. doi:10.1007/s12237-017-0335-x
  • Liu, Y., Jiao, J. J., & Cheng, H. K. (2018). Tracing submarine groundwater discharge flux in Tolo Harbor, Hong Kong (China). Hydrogeology Journal, 26(6), 1857-1873. doi:10.1007/s10040-018-1736-z
  • Liu, Y., Jiao, J. J., Liang, W., & Luo, X. (2017). Tidal Pumping-Induced Nutrients Dynamics and Biogeochemical Implications in an Intertidal Aquifer. Journal of Geophysical Research: Biogeosciences, 122(12), 3322-3342. doi:10.1002/2017jg004017
  • Liu, Y., Jiao, J. J., Liang, W., & Kuang, X. (2017). Hydrogeochemical characteristics in coastal groundwater mixing zone. Applied Geochemistry, 85(Part A), 49-60. doi:10.1016/j.apgeochem.2017.09.002
  • Liu, Y., Jiao, J. J., & Luo, X. (2016). Effects of inland water level oscillation on groundwater dynamics and land-sourced solute transport in a coastal aquifer. Coastal Engineering, 114, 347-360. doi:10.1016/j.coastaleng.2016.04.021
  • Liu, Y., Kuang, X., Jiao, J. J., & Li, J. (2015). Numerical study of variable-density flow and transport in unsaturated-saturated porous media. Journal of Contaminant Hydrology, 182, 117-130. doi:10.1016/j.jconhyd.2015.09.001
  • Liu, Y., Mao, X., Chen, J., & Barry, D. A. (2014). Influence of a coarse interlayer on seawater intrusion and contaminant migration in coastal aquifers. Hydrological Processes, 28(20), 5162-5175. doi:10.1002/hyp.10002
  • Liu, Y., Shang, S., & Mao, X. (2012). Tidal Effects on Groundwater Dynamics in Coastal Aquifer under Different Beach Slopes. Journal of Hydrodynamics, 24(1), 97-106. doi:10.1016/S1001-6058(11)60223-0