Share Email Print
cover

Proceedings Paper

A Michelson interferometer for seismic wave measurement: theoretical analysis and system performances
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

This papers describes a new low-frequency seismic sensor for geophysical applications. The instrument is basically a monolithic tunable folded pendulum with an interferometric readout system, that can be configured as seismometer or as accelerometer. The monolithic mechanical design and the introduction of a laser interferometric technique for the readout implementation make it a very sensitive and compact instrument with a very good immunity to environmental noises. Preliminary tests on the mechanical performances of the monolithic structure and on the optical reaodut have been performed. Interesting result is the measured resonant frequency of the instrument of ≈ 150mHz obtained with a rough tuning, demonstrating the feasibility of a resonant frequency of the order of 5mHz with a more refined tuning. The mechanics of the seismic sensor, the optical scheme of the readout system, the theoretical predictions and the preliminary experimental performances as seismometer are discussed in detail, together with the foreseen further improvements.

Paper Details

Date Published: 3 October 2006
PDF: 11 pages
Proc. SPIE 6366, Remote Sensing for Environmental Monitoring, GIS Applications, and Geology VI, 63660I (3 October 2006); doi: 10.1117/12.687907
Show Author Affiliations
Fausto Acernese, Univ. degli Studi di Salerno (Italy)
Complesso Univ. di Monte S. Angelo Via Cintia (Italy)
Rosario De Rosa, Complesso Univ. di Monte S. Angelo Via Cintia (Italy)
Univ. degli Studi di Napoli Federico II (Italy)
Fabio Garufi, Complesso Univ. di Monte S. Angelo Via Cintia (Italy)
Univ. degli Studi di Napoli Federico II (Italy)
Rocco Romano, Univ. degli Studi di Salerno (Italy)
Complesso Univ. di Monte S. Angelo Via Cintia (Italy)
Fabrizio Barone, Univ. degli Studi di Salerno (Italy)
Complesso Univ. di Monte S. Angelo Via Cintia (Italy)


Published in SPIE Proceedings Vol. 6366:
Remote Sensing for Environmental Monitoring, GIS Applications, and Geology VI
Manfred Ehlers; Ulrich Michel, Editor(s)

© SPIE. Terms of Use
Back to Top