15 November 2023
10:00 AM (Central Time)
In the hydrogeophysics Group (HGG) at Aarhus University we have worked with geophysical methods in the hydro-domain for more than 30 years. Since the beginning of the 2000s we have had a strong focus on TEM methods beginning with the airborne SkyTEM system and later with ground-based systems, both stationary and towed (tTEM).
In this presentation I discuss several mobile and stationary TEM methods, with the goal of highlighting the complementary nature of these approaches; particularly with respect to resolution capabilities, scale, and cost. There will be a focus on the latest developments, particularly towed TEM systems enabling efficient high-resolution mapping of near-surface systems. I will discuss examples including characterization of flow pathways surrounding a landfill site in Denmark, and groundwater prospecting efforts in Kenya and Ethiopia.
Denys Grombacher is an assistant professor within the Hydrogeophysics Group at Aarhus University, Denmark. He received his PhD in Geophysics from Stanford University in 2015. His research focuses on development of geophysical techniques providing rapid, high-resolution, and cost-efficient mapping of near-surface hydrogeological systems. He specializes in emerging nuclear magnetic resonance (NMR) and transient electromagnetic (TEM) technologies, including theoretical investigations of the NMR and TEM signals in near-surface conditions, building efficient numerical modelling tools, and developing beyond-state-of-the-art instrumentation.