NDLI: Assessment of the ground motion levels for the Vrancea (Romania) November 1940 earthquake

Content Provider	Springer Nature Link
Author	Pavel, Florin Vacareanu, Radu
Copyright Year	2015
Abstract	This short paper focuses on the evaluation of the ground motions levels likely experienced in ten cities seriously damaged during the November 1940 intermediate-depth Vrancea (Romania) earthquake (M $_{W}$ = 7.7). In the first step of the analysis, the ground motion levels are evaluated using a recently developed ground motion model (Vacareanu et al. in J Earthq Eng 19(3):535–562, 2015) for the Vrancea intermediate-depth seismic source. Next, the stochastic method of simulation (Boore in Pure App Geophys 160:635–676, 2003) is employed in the same purpose. In order to include the nonlinear soil effects into the results of the stochastic simulations, a dedicated amplification function is derived from the ground motions recorded during two large magnitude Vrancea earthquakes in 1986 and 1990. The results obtained for the November 1940 Vrancea earthquake show that the largest spectral ordinates are obtained when the nonlinear soil effects are taken into consideration, while the peak ground accelerations are in almost all cases in excess of 0.15 g. In addition, the results for Bucharest are validated through a site-specific response analysis performed using a soil profile from the literature. This site response analysis for the 1940 seismic event reveals long-period spectral amplitudes, similar to the ones observed in Bucharest during the Vrancea 1977 earthquake.
Starting Page	1469
Ending Page	1480
Page Count	12
File Format	PDF
ISSN	0921030X
Journal	Natural Hazards
Volume Number	78
Issue Number	2
e-ISSN	15730840
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-04-23
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hypocentral distance Spectral accelerations Stochastic simulations Ground motion model Nonlinear soil effects Natural Hazards Hydrogeology Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Civil Engineering Environmental Management
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science Water Science and Technology

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