Attenuation characteristics of peak horizontal acceleration in northeast and southwest China
Regional seismic characteristics in northeastern and southwestern China are quite different. Earthquakes are more frequent in SW China than in NE China and intensity attenuates faster in SW China than in NE China Through regression analyses of data from these two regions we have found the attenuation of peak horizontal accelerations also to be noticeably different. For northeastern China the regression is log/sub 10/(a) = - 0.474+0.613M - 0.873 log/sub 10/(R) - 0.00206R and for southwestern China, the regression is log/sub 10/(a) = 0.437+0.454M - 0.739 log/sub 10/(R) - 0.00279R where a is acceleration in cm/sec/sup 2/, M is the Chinese surface wave magnitude (Institute of Geophysics, State Seismological Bureau), and distance in kilometres. The formula for northeastern China has distance coefficients similar to those for Central United States as derived by Nuttli and Herrmann.
- Research Organization:
- Institute of Engineering Mechanics, Academico Sinica, Harbin
- OSTI ID:
- 6376456
- Journal Information:
- Int. J. Earthquake Eng. Struct. Dyn.; (United States), Vol. 13:3
- Country of Publication:
- United States
- Language:
- English
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