Tidal tilts observations in the Gran Sasso underground laboratory

Iafolla, V. and Milyukov, V. and Nozzoli, S. (2001) Tidal tilts observations in the Gran Sasso underground laboratory. Il nuovo cimento C, 24 C (2). pp. 263-272. ISSN 1826-9885

ncc8549.pdf - Published Version

Download (215kB) | Preview
Official URL: https://www.sif.it/riviste/sif/ncc/econtents/2001/...


A new tiltmeter, based on the technology for building a space-borne high-sensitivity accelerometer and manufactured at IFSI/CNR, has been operating during several years in the INFN Gran Sasso underground laboratory. The results of the analysis of a three-year data set, processed with the program package ETERNA, to estimate earthtidal parameters are reported. For the best series of data (1998) tide measurement accuracies are: 0.5–1% for the M2 (lunar principal) amplitude and 3–4% for the O1 (lunar declination) amplitude. The tiltmeter installed at a depth of 1400m shows no clear evidence of meteorological effects. Observed tidal parameters are compared with theoretical tidal parameters predicted for a non-hydrostatic inelastic Earth model and demonstrate good agreement for the M2 component. Due to the high accuracy of the tidal components prediction (better than 1%) tidal measurements were used to estimate the long-term stability of the instrument response.

Item Type: Article
Uncontrolled Keywords: Earth tides ; Instrumentation and techniques for geophysical research
Subjects: 500 Scienze naturali e Matematica > 520 Astronomia e scienze connesse
Depositing User: Marina Spanti
Date Deposited: 10 Mar 2020 18:21
Last Modified: 10 Mar 2020 18:21
URI: http://eprints.bice.rm.cnr.it/id/eprint/14157

Actions (login required)

View Item View Item