Last Friday, MLU and the Institute of Geosciences and Geography opened their doors again for the Long Night of Science. Of course, Applied Geology was also represented with a variety of interactive stations. Many visitors took the opportunity to gain an insight into our departments’ work on the topic of groundwater.
Ohm sweet Ohm
At this station, Anika showed how the distribution of electrical resistance is determined by measuring voltages when electricity flows through the ground. This in turn allows conclusions to be drawn about geological structures in the subsoil, e.g. the location and thickness of aquifers. A small-scale experimental setup illustrated how geophysics contributes to the exploration of the subsurface.
Aquifers in the aquarium
In a model aquarium, Wolfgang and student assistant Nick demonstrated how aquifers are structured and how different types of loose rock, such as sand, clay or gravel, allow water to pass through. A film and small pumping experiments helped visitors understand how water flows underground.
Groundwater sampling
How is groundwater actually sampled? At this station, Domink and Christian demonstrated live how samples are taken, measured on site and various permeability tests are carried out. The temperature measurements at our 40-metre-deep groundwater measuring point were also a real highlight.
Superheroes in the groundwater
There is more life in groundwater than you might think: tiny crabs, worms and other fascinating microorganisms – perfectly adapted to the dark, oxygen-poor habitat. Visitors were not only able to view real fauna samples under the microscope, but also learned from Laura and student assistant Annika how these animals help researchers detect ecological changes at an early stage.
A big thank you to all visitors who joined us in exploring the world beneath the surface.
