Record details

Title
    Strong-motion fluid rotation seismograph
Author
    Buben, Jiří
    Jedlička, Petr
    Kozák, Jan
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Bulletin of the Seismological Society of America
Vol./nr.
    Roč. 99, 2B
Pages
    s. 1443-1448
Year
    2009
Notes
    Rozsah: 6 s.
    Výzkumný záměr: CEZ:AV0Z30120515
    Výzkumný záměr: CEZ:AV0Z30130516
Subject category
    fluid seismometer
    rotation seismograph
    seismic waves
Keyword
    Fluid
    Rotation
    Seismograph
    Strong-motion
Abstract (in english)
   A new type of rotation seismometer is proposed using a fluid ring-shaped sensor, where the inertial mass is a liquid moving in the tube attached to a pier to measure rotational movements. Rotational components of seismic waves, which are strong enough to twist heavy objects on the Earth's surface in the epicenter zone of an earthquake, decrease rapidly with distance. These weak rotational components may easily vanish in standard seismograms displaying translational displacements. In the proposed fluid, seismometer translational displacements are mutually compensated so that weak rotational vibration components become easily identifiable and recognizable.
Contributor
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
    U
Import date
    9. 12. 2013