Assessing perched aquifer dynamics and associated recharge variability on sand barrier islands using geophysical methods
The aim of this research is to assess the spatial extent and temporal variability of perched aquifer systems on barrier islands and its influence on regional groundwater recharge. The hypotheses that these perched systems are linked to lakes and wetlands and that recharge is spatially variable due to preferential flow paths and retention of soil moisture content in the unsaturated zone will be tested using geophysical methods such as electrical resistivity tomography, self-potential and ground penetrating radar on gridded transects, at multiple times and at specific locations. The geophysical interpretation will be supported by laboratory tests and analysis of core samples. The outcome of the research will improve our understanding of perched aquifer water balance and how perched systems interact with regional aquifers, which has been mostly neglected so far.
Funding: International Post graduate Research Scholarship (IPRS), UQ centennial Scholarship, Moreton Bay Research Scholarship (MBRS) (2016-2017)
Advisors: Assoc Prof Lutz Gross, Dr Harald Hofmann, Dr Thierry Bore