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Mathematical‐Physical Modelling of Seismic Response of the Beijing Depression
Author(s) -
Yimin Peng,
Jinzhong Sun,
Xiansheng Hao
Publication year - 1988
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.1988.mp1002003.x
Subject(s) - beijing , seismology , geology , seismic hazard , tectonics , bedrock , seismic zone , seismic microzonation , supersonic speed , induced seismicity , geomorphology , mechanics , geography , physics , archaeology , china
There is a NE‐ trending earthquake hazard anomalous zone in the western part of the area of the city of Beijing proper. A comprehensive study of it has been made. In the study the two‐dimensional finite element dynamic analysis and supersonic seismic model experiments were conducted for the first time, and some preliminary results have been achieved. The Beijing depression, a lower order tectonic unit in the Beijing downwarp, is just located below the earthquake hazard anomalous zone. Analysis of the experimental results shows that the topography of the buried bedrock is the main factor responsible for the presence of the anomalous zone. Besides, the two‐dimensional mathematical analysis has more marked advantages in reflecting the lateral inhomogeneity of the foundation as compared with the one‐dimensional one, and the supersonic seismic model experiments may reflect the integrated effects of the earthquake sources, path of wave propagation and site geological structure in an all‐round way.