Earthquake detection probabilities and completeness magnitude in the northern margin of the Ordos Block

作     者：Zhang Fan Yang Xiao-Zhong Cui Feng-Zhi 张帆;杨晓忠;崔丰智

作者机构：College of Control and Computer EngineeringNorth China Electric Power UniversityBeijing 102206China College of Mathematics and PhysicsNorth China Electric Power UniversityBeijing 102206China Inner Mongolia Autonomous Region Seismological BureauHohhot 010051China 

基　　金：funded by Director Fund of the Inner Mongolia Autonomous Region Seismological Bureau(No.2023GG02,2023MS05) the Inner Mongolia Natural Science Foundation(No.2024MS04021) 

出 版 物：《Applied Geophysics》 (应用地球物理（英文版）)

年 卷 期：2024年第21卷第4期

页      码：777-793,881页

摘      要：The assessment of the completeness of earthquake catalogs is a prerequisite for studying the patterns of seismic *** traditional approaches,the minimum magnitude of completeness(MC)is employed to evaluate catalog completeness,with events below MC being discarded,leading to the underutilization of the *** probability is a more detailed measure of the catalog s completeness than MC;its use results in better model compatibility with data in seismic activity modeling and allows for more comprehensive utilization of seismic observation data across temporal,spatial,and magnitude *** the magnitude-rank method and Maximum Curvature(MAXC)methods,we analyzed temporal variations in earthquake catalog completeness,finding that MC stabilized after 2010,which closely coincides with improvements in monitoring capabilities and the densification of seismic *** the probability-based magnitude of completeness(PMC)and entire magnitude range(EMR)methods,grounded in distinct foundational assumptions and computational principles,we analyzed the 2010-2023 earthquake catalog for the northern margin of the Ordos Block,aiming to assess the detection probability of earthquakes and the completeness of the earthquake *** PMC method yielded the detection probability distribution for 76 stations in the distance-magnitude space.A scoring metric was designed based on station detection capabilities for small earthquakes in the near *** the detection probabilities of stations,we inferred detection probabilities of the network for diff erent magnitude ranges and mapped the spatial distribution of the probability-based completeness *** the EMR method,we employed a segmented model fitted to the observed data to determine the detection probability and completeness magnitude for every grid point in the study *** discussed the sample dependency and low-magnitude failure phenomena of the PMC method,noting the potential overestimatio

主 题 词：magnitude of completeness northern margin of the Ordos Block PMC method EMR method earthquake detection probability 

学科分类：070801[070801] 07[理学] 0708[理学-地球物理学类] 

核心收录：

D　O　I：10.1007/s11770-024-1128-1

馆 藏 号：203138911...