Keywords:Probability-based magnitude of completeness (PMC), seismic network, detectability
The magnitude of completeness is a key quantitative index to assess the detectability of regional seismic network. This paper deals with the detectability of the Capital-circle Seismic Network in China by adopting the probability-based magnitude of completeness (PMC) method which can reveal the detailed spatio-temporal characteristics of regional seismic network detectability. The earthquake data (2002-2009) and station information are from China Earthquake Administration (CEA). We estimated the network detectability and discussed the possibility of improving the network detectability according to the spatio-temporal distribution of completeness magnitudes and the simulation results. The results show that the detectability of the Capital-circle Seismic Network is high in most regions, although the detectability in a few regions needs to be enhanced. Simulation results suggest that increasing stations may further enhance the detectability of the seismic network. This study may be helpful for the optimization of the regional seismic network.
This study is supported partially by the National Natural Science Foundation of China (41025014).