Naslov
Magnification of undamped seismographs and the analysis of the 1906 San Francisco earthquake record obtained on the Vicentini seismograph in Zagreb (Croatia)

Autori
Herak, Marijan ; Allegretti, Ivo ; Duda, J. Seweryn

Izvornik
Terra nova (0954-4879) 8 (1996), 6; 286-292

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
dynamic magnification; nonlinear seismograph; San Francisco earthquake

Sažetak
A method to estimate the dynamic magnification of nonlinear seismographs is presented. The method was tested by applying it to the record of the 1906 San Francisco earthquake seismogram obtained on the Vicentini seismograph in Zagreb, in order to reconstruct the ground motion amplitudes. The magnitudes inferred from the corrected Vicentini recording of P- and surface waves are internally consistent (mb=7.74, Ms=8.48) and agree with the values published in various catalogues, within error limits of magnitude determination for individual events. The corrected P-waveform is compatible with a rupture slip profile exhibiting several distinct maxima along the 300 km-long section of the San Andreas fault, in accordance with recent studies and contemporary geodetic measurements.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA