GROUND TILT SEISMIC SPECTRUM MEASURED WITH A NEW HIGH-SENSITIVITY ROTATIONAL ACCELEROMETER

Authors
LUITEN AN BECCARIA M BERNADINI M BRACCINI S BRADASCHIA C CELLA G CIAMPA A CURCI G CUOCO GE DAMBROSIO E DATTILO V DESALVO R DELFABBRO R DIVIRGILIO A FENG G FERRANTE I FIDECARO F GADDI A GENNAI A GIAZOTTO A HOLLOWAY L LAPENNA P LOSURDO G MALIK S MANCINI S PAN HB PAOLETTI F PASQUALETTI A PASSUELLO D POGGIANI R RAFFAELLI F VICERE A ZHANG Z
Citation
An. Luiten et al., GROUND TILT SEISMIC SPECTRUM MEASURED WITH A NEW HIGH-SENSITIVITY ROTATIONAL ACCELEROMETER, Review of scientific instruments, 68(4), 1997, pp. 1889-1893
Citations number
5
Categorie Soggetti
Physics, Applied","Instument & Instrumentation
Journal title
Review of scientific instruments → ACNP
ISSN journal
00346748
Volume
68
Issue
4
Year of publication
1997
Pages
1889 - 1893
Database
ISI
SICI code
0034-6748(1997)68:4<1889:GTSSMW>2.0.ZU;2-B
Abstract
We describe a new rotational accelerometer exhibiting excellent rotati onal acceleration sensitivity of 2-3 X 10(-9) rad s(-2)/root Hz for fr equencies below 2 Hz and increasing as the square of frequency for fre quencies higher than 2 Hz. The sensitivity to horizontal linear accele rations and static tilts is 60 dB less than its rotational sensitivity . The accelerometer has been used to characterize the seismic ground t ilt spectrum. Measurements of the performance of the device and of the seismic rotational spectrum are presented. (C) 1997 American Institut e of Physics.