Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/4929
Authors: | Greco, F.* Budetta, G.* Carbone, D.* Carmisciano, C.* Del Negro, C.* Loretti, I.* Sicali, A.* Stefanelli, P.* |
Title: | Experimentation of two coupled gravity meters in continuous recording with a high sampling rate at Etna volcano | Issue Date: | 2006 | Keywords: | gravimeters earthquakes seismic-induced effects gravity fluctuations |
Subject Classification: | 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk |
Abstract: | During the summer of 2005, we performed a 2-month lasting experiment (29 July - 29 September), using two spring gravimeters installed side-by-side at Mt. Etna. Two LaCoste & Romberg gravimeters were utilized (G594 and G1190), each equipped with an Aliod 100 electronic feedback system. Data were acquired at a sampling rate (2 Hz) higher than that normally used for gravimetric recordings. Apparent fluctuations (i.e. instrumental, not due to actual changes of the gravity field) dominated by a component with period of about 20 seconds appear over the gravity recordings when both high-frequency (local earthquakes) and low-frequency (teleseisms) components dominate the ensuing seismic wavefield. Though it has only an instrumental character, the outcome of this study represent an important further step towards the development of any a-priori or a-posteriori system aimed at reduce the effect of seismic shocks on the signal from continuously recording gravimeters. |
Appears in Collections: | Conference materials |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
egu_2006_greco et al.pdf | 35 kB | Adobe PDF | View/Open |
Page view(s)
152
checked on Apr 20, 2024
Download(s)
88
checked on Apr 20, 2024