Strong-motion fluid rotation seismograph

0330222 - GFÚ 2010 RIV US eng J - Článek v odborném periodiku
Jedlička, Petr - Buben, Jiří - Kozák, Jan
Strong-motion fluid rotation seismograph.
Bulletin of the Seismological Society of America. Roč. 99, 2B (2009), s. 1443-1448. ISSN 0037-1106. E-ISSN 1943-3573
Výzkumný záměr: CEZ:AV0Z30120515; CEZ:AV0Z30130516
Klíčová slova: rotation seismograph * seismic waves * fluid seismometer
Kód oboru RIV: DC - Seismologie, vulkanologie a struktura Země
Impakt faktor: 1.860, rok: 2009

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.
Trvalý link: http://hdl.handle.net/11104/0176064