Hydrogeophysics is the field of sciences studying the use of geophysical methods to characterize groundwater reservoirs and groundwater related processes. In this project, we will carry out research on different aspects of hydrogeophysics. This involves the acquisition, combination and processing of geophysical data, their inversion, the characterization of petrophysical relationships, the integration of geophysical data into groundwater models and uncertainty analysis. These developments will be applied to various case studies including saltwater intrusion and fresh submarine groundwater discharge studies, shallow and deep geothermal systems, the characterization and remediation of contaminated sites as well as the monitoring of groundwater and hydrothermal systems.