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ИСТИНА ЦЭМИ РАН |
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The macroseismic intensity represents an adequate classification of the severity of ground shaking during an earthquake on the basis of observed effects at a given site. The anisotropic propagation of the seismic effect is evident and usually follows the dominant direction of active faults nearby, while higher intensity values about MMI = VI or greater primarily describe the observed damages in the near-field. An anisotropic model of the seismic impact in terms of macroseismic intensity is suggested for strong earthquakes in the Lake Baikal Region based on historical evidence and regional map of active faults.