Enigmatic Surface Ruptures at Cape Rytyi and Surroundings, Baikal Rift, Siberia: Seismic Hazard Implication

The geomorphic expression of active faulting and distinction paleoseismic events in areas that are rapidly obscured by erosion/sedimentation still remains a considerable scientific problem. present article discusses the revealing surface ruptures their parameters to identify capable faults without trenching estimate magnitude earthquakes. case study was at Cape Rytyi, located Baikal-Lena Nature Reserve on northwestern shore Lake Baikal. Based unmanned aerial photography, GPR, structural observations, we mapped investigated relation between geomorphological forms ruptures. obtained results show past landslides paleoruptures Rytyi its surroundings associated with least two Mw earlier event 7.3 (Ms = 7.4); later one 7.1 7.3). distal part delta Rita River southeastern slope Baikal Ridge were included seismogenic rupture zone, which traces some 37 km along Kocherikovsky fault. approximate intervals earthquakes occurred 12–5 ka 4–0.3 ka, respectively. applied analysis methods can be useful for paleoseismology assessing seismic hazards similar regions elsewhere.