How to test the reliability of instruments used in mirotremor horizontal-to-vertical spectral ratio measurementsTasič, Izidor (Avtor) Runovc, Franc (Avtor) , Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru (Lastnik avtorskih pravic) seismic microzonationhorizontal-to-vertical spectral ratio methodambient vibrationsmicrotremorseismic system transfer functionreliability and calibration of seismic systemsThe reliability of a horizontal-to-vertical spectral ratio (HVSR) curve depends on the results obtained by a verified seismological system. Seismic microzonation provides the basis for a site-specific risk analysis and it can be evaluated using the microtremor HVSR method, where the data are recorded using modern seismological systems. Changes in the transfer function of seismological systems affect the HVSR curve and, consequently, also its interpretation, if these changes are not detected and taken into consideration while performing the microtremor spectral calculations. The reliability of the seismic microzonation performed by such a procedure becomes questionable. An algorithm is developed with a two references system, where the influence of the transfer function on the HVSR curve by the tested system can be evaluated without any a-priori knowledge regarding the transfer functions of any of the systems. This approach is applied to a Lennartz Le-3D/5s seismometer and to a TROMINO seismological system, where two Streckeisen STS2 seismometers are used as the reference systems.20102018-06-11 09:51:41Znanstveno delo70731ISSN: 1854-0171 UDK: 534.64OceCobissID: 215987712COBISS_ID: 1092191ISSN pri članku: 1854-0171NUK URN: URN:SI:UM:DK:BE4HLMMKslFakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru