Rotational sensor on a volcano: New insights from Etna, Italy
- 1University of Potsdam, Institute of Geosciences, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany (eva.ps.eibl@hotmail.com)
- 2INGV, Catania, Italy
- 3Geophysical Observatory Fürstenfeldbruck, Ludwigshöhe 8, 82256 Fürstenfelbruck, Germany
- 4GFZ German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany
Rotational seismology is an emerging field of seismology with rotational sensors such as blueSeis-3A as portable devices. We deployed one of these rotational sensors on Etna volcano from August to September 2019 in the middle of a 26 stations broadband seismic array and a fibre-optic cable deployed for Distributed Acoustic Sensing (DAS). We, therefore, recorded continuously the full seismic wavefield using a 6C station (rotational sensor co-located with a broadband seismometer) for 30 days.
We will present an overview of our work on the rotational data in combination with a broadband seismometer. We will (i) compare the translational with rotational data and show how they complement each other, (ii) calculate back azimuths using only a 6C station or using merely the horizontal components of the rotational sensor, (iii) determine Love and Rayleigh wave velocities from the rotation rate and (iv) perform a simple inversion for the shallow velocity structure below the station, and finally (v) discuss the usefulness of such a sensor in a volcanic environment and (vi) highlight what new it would bring to volcano-related research.
How to cite: Eibl, E. P. S., Currenti, G., Wassermann, J., Jousset, P., Vollmer, D., Larocca, G., Pellegrino, D., Pulviventi, M., Contrafatto, D., and Yuan, S.: Rotational sensor on a volcano: New insights from Etna, Italy, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-18862, https://doi.org/10.5194/egusphere-egu2020-18862, 2020