Spatial Heterogeneity of b Values in Northeastern Tibetan Plateau and Its Interpretation.

ABSTRACT: The northeastern margin of the Tibetan Plateau (NE Tibetan Plateau) exhibits active geological structures and has experienced multiple strong earthquakes, with M ≥ 7, throughout history. Particularly noteworthy is the 1920 M8¹/₂ earthquake in the Haiyuan region that occurred a century ago and is documented as one of the deadliest earthquakes. Consequently, analyzing seismic risks in the northeastern margin of the Tibetan Plateau holds significant importance. The b value, a crucial parameter for seismic activity, plays a pivotal role in seismic hazard analyses. This study calculates the spatial b values in this region based on earthquake catalogs since 1970. The study area encompasses several major active faults, and due to variations in

SUBMITTER: Hu N 

PROVIDER: S-EPMC10969480 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature