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SEISMIC SYSTEM [1 record]
Record 1 - internal organization data 1993-10-01
Record 1, English
Record 1, Subject field(s)
- Acoustics (Physics)
Record 1, Main entry term, English
- seismic system
1, record 1, English, seismic%20system
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A system consisting of a mass attached to a reference base by one more flexible elements. Damping is normally included. 1, record 1, English, - seismic%20system
Record number: 1, Textual support number: 1 OBS
Seismic systems are usually idealized as single degree-of-freedom systems with viscous damping. The natural frequencies of the mass as supported by the flexible elements are relatively low for seismic systems associated with displacement or velocity pick-ups, and are relatively high for acceleration pick-ups, as compared with the range of frequencies to be measured. When the natural frequency of the seismic system is low relative to the frequency range of interest, the mass of the seismic system may be considered to be at rest over this range of frequencies. 1, record 1, English, - seismic%20system
Record 1, French
Record 1, Domaine(s)
- Acoustique (Physique)
Record 1, Main entry term, French
- système sismique
1, record 1, French, syst%C3%A8me%20sismique
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Système constitué par une masse reliée à une base de référence par un ou plusieurs éléments flexibles. L'amortissement est généralement compris. 1, record 1, French, - syst%C3%A8me%20sismique
Record number: 1, Textual support number: 1 OBS
Habituellement, on schématise un système sismique en l'assimilant à un degré de liberté avec un amortissement visqueux. Les fréquences propres des systèmes sismiques associés aux capteurs de déplacement ou de vitesse sont relativement basses en comparaison des fréquences à mesurer; elles sont relativement élevés pour les capteurs d'accélération. Lorsque la fréquence propre du système sismique est basse par rapport au domaine de fréquences représentatif, la masse du système sismique peut être considérée comme étant en repos dans ce domaine de fréquences. 1, record 1, French, - syst%C3%A8me%20sismique
Record 1, Spanish
Record 1, Textual support, Spanish
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