Articles | Volume 12, issue 4
Solid Earth, 12, 993–1003, 2021
https://doi.org/10.5194/se-12-993-2021

Special issue: Fibre-optic sensing in Earth sciences

Solid Earth, 12, 993–1003, 2021
https://doi.org/10.5194/se-12-993-2021

Research article 28 Apr 2021

Research article | 28 Apr 2021

On the comparison of strain measurements from fibre optics with a dense seismometer array at Etna volcano (Italy)

Gilda Currenti et al.

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Latest update: 25 Oct 2021
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Short summary
We investigate the capability of distributed acoustic sensing (DAS) to record dynamic strain changes related to Etna volcano activity in 2019. To validate the DAS measurements, we compute strain estimates from seismic signals recorded by a dense broadband array. A general good agreement is found between array-derived strain and DAS measurements along the fibre optic cable. Localised short wavelength discrepancies highlight small-scale structural heterogeneities in the investigated area.