Latest issueUpdated Assessment of Seismic Hazard for the Areas of Kolsky Peninsula and Karelia, Based on Records of Local Earthquakes
Authors:
Dr. of Sci. (Phys. and Math.), Head of the Laboratory of Engineering Seismology and Interpretation of Seismic Observations No. 306, Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences. Moscow, Russian Federation
Olga V. Pavlenko
Rubric: Seismic zoning
Annotation:
Updated accurate estimates of seismic effects from scenario earthquakes are obtained for the areas of Kolsky peninsula and Karelia; calculations were carried out with regional characteristics of radiation and propagation of seismic waves that were estimated based on records of local earthquakes. Seismic intensity, peak ground accelerations and velocities, response spectra, and other characteristics are estimated from acceleration time histories of motions on the surface calculated by stochastic method. Higher estimates of seismic intensity and peak ground accelerations and velocities were obtained, as compared to the estimates obtained earlier and based on world-average characteristics or from areas with similar geological structure. The main cause of the obtained differences and high new estimates of seismic effects is neglecting in past studies high values of the stress drop, ??~bars, typical for this region.