FEST: 'Seismology on loose sediments'

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Friday Earth Sciences Talk by Dr Elmer Ruigrok

Instrumental seismology has developed swiftly after the recording of distant seismicity in 1889 in Potsdam. Geophysical institutes around the world started to deploy seismic sensors. Almost exclusively, these new sensors were constructed at hard rock sites. At these sites, the induced seismic wavefield can be recorded with less noise and fewer perturbations than at sedimentary sites.

The Netherlands, however, only has outcropping hard rock in the very south of Limburg and the very east of Gelderland. Most of the country is covered by a thick layer of unconsolidated sediments. Nonetheless, during the last few decades, the seismic network has largely been expanded over these soft soils. I will discuss various challenges, and solutions, that have emerged with studying the Earth’s vibrations on weak grounds.

With the FEST, we intend to bring the departments of Earth Sciences and Physical Geography together. The aim is to present (mostly) Utrecht-based Earth Sciences in an accessible way, primarily in order to stay familiar with each other’s work across disciplines. Simultaneously, this provides an excellent platform to help (in particular MSc.) students in their orientation on possible graduation specialisations and future careers.

Start date and time
End date and time
Location
Koningsberger building - COSMOS room; hybrid via https://tinyurl.com/fest-teams
Entrance fee
no fee or registration