Seminar by Andreas Köhler, NORSAR.
Seismic arrays for cryosphere monitoring
Abstract: Arrays of seismic sensors outperform single seismometers when it comes to detection of weak seismic signals since multi-sensor (array) processing allows for noise reduction and therefore lowering the event detection threshold. Moreover, seismic arrays allow measuring the velocity and propagation direction of seismic signals which in turn improves event location and is beneficial when analyzing the continuous background seismic noise. This presentation includes a brief introduction into seismic array processing and an overview about current arrays deployed in Svalbard and mainland Norway. The second part focusses on different examples on how seismic arrays have and are being used for cryoseismological studies in Svalbard, i.e., monitoring of glacier calving, permafrost, and local glacier dynamics. Finally, a recent array deployment in Hornsund, Svalbard, and an upcoming installation in Antarctica are presented.
The talk is in Aud 2 in the Geology Building. It is also possible to follow at Zoom.
Videolink to the lecture will be sent to the mailinglists alle@geo and geohyd-info@geo. If you want to subscribe to the geohyd-info@geo list send an email to Anita.
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About the seminar
This seminar is offered by the Section for Geography and Hydrology, Dept. of Geosciences, University of Oslo. The GEOHYD-seminars are announced as lunch seminars so bring your lunch if you want to.
The seminars are open for everyone interested, and especially students are welcome.
The Lunch Seminar Team
– Louise and Henning