Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/10849
Authors: Currenti, Gilda* 
Zuccarello, Luciano* 
Bonaccorso, Alessandro* 
Sicali, Antonino* 
Title: Borehole Volumetric Strainmeter Calibration From a Nearby Seismic Broadband Array at Etna Volcano
Journal: Journal of Geophysical Research: Solid Earth 
Series/Report no.: /122 (2017)
Issue Date: 2017
DOI: 10.1002/2017JB014663
Abstract: Strainmeter and broadband seismic signals have been analyzed jointly with the aim of calibrating a borehole strainmeter at Etna volcano by using a seismo-geodetic technique. Our results reveal a good coherence between the dynamic strains estimated from seismometer data and strains recorded by a dilatometer in a low-frequency range [0.03–0.06 Hz] at the arrival of teleseismic waves. This significant coherence enabled estimating the calibration coefficient and making a comparison with calibration results derived from other methods. In particular, we verified that the proposed approach provides a calibration coefficient that matches the results obtained from the comparison of the recorded strain both with theoretical strain tides and with normal-mode synthetic straingrams. The approach presented here has the advantage of exploiting recorded seismic data, avoiding the use of computed strain from theoretical models.
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