E.I. Novikova

TL;DR: In this article, two detailed ambient vibration surveys of a 7-story reinforced concrete building in Van Nuys, California, were conducted after the building was severely damaged by the 17 January 1994, Northridge earthquake (ML=5.3, epicenter 1.5 km west from the building site) and its early aftershocks.

TL;DR: In this paper, a seven-storey hotel building in Van Nuys, California has been measured by strong motion accelerographs and its aftershocks, including the 1971 San Fernando (ML=6.6, R=22), 1987 Whittier-Narrows (ML =5.9, R =41, km), 1992 Landers (ML 7.5, r=186, km) and 1994 Northridge (ML 6.4, r = 1.5 km) earthquakes.

TL;DR: The physical bases and empirical equations for modelling the duration of strong earthquake ground motion in terms of the earthquake magnitude, the epicentral distance and the geological and local soil site conditions are investigated in this article.

TL;DR: In this article, the authors estimate the range of amplitudes and the duration of strong ground motion near faults, as these long period pulses can be related to the properties of high-frequency radiation from the source.

TL;DR: In this article, several new empirical equations of the frequency dependent duration of strong earthquake ground motion are presented, where the duration is considered as being composed of two parts: (1) the duration of stong motion as it is observed at recording stations located on basement rocks, and (2) the prolongation of this duration for stations positioned on sediments.