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
|
Text
ncc8549.pdf - Published Version Download (215kB) | Preview |
Abstract
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 |
