山西地区不同时段地震目录最小完整性震级研究

Abstract

Abstract: The minimum magnitude of completeness (M_C) in earthquake catalogues, which reflects the network monitoring capability, plays an important role in studying seismicity and assessing seismic hazards. Considering the fact that Shanxi Seismic Network was established in different periods, the paper divided it into 4 periods. Based on the 1970—2012 earthquake catalogues in Shanxi region, we analyzed temporal variation of the minimum magnitude of completeness for earthquake catalogue by using the magnitude-order number, the maximum curvature (MAXC) and the goodness-of-fit test (GFT) methods. The results showed that the minimum magnitude was gradually lowered with the upgrading of seismic network from 1970, and MC could reach as low as M_L0.9 after the “Tenth Five-Year Plan”, which indicated that the monitoring capability had been significantly improved.

Key words: Minimum magnitude of completeness, Seismic network, Seismic monitoring capability, Shanxi Region

CLC Number:

P315.7

WANG Xia, SONG Mei-qin, LI Li, LUO Yong. Minimum Magnitude of Completeness for Earthquake Catalogues of Different Periods in Shanxi Region[J]. EARTHQUAKE, 2014, 34(2): 82-88.

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Minimum Magnitude of Completeness for Earthquake Catalogues of Different Periods in Shanxi Region

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