An algorithm for the optimum distribution of a regional seismic network — II. An analysis of the accuracy of location of local earthquakes depending on the number of seismic stations期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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An algorithm for the optimum distribution of a regional seismic network — II. An analysis of the accuracy of location of local earthquakes depending on the number of seismic stations

Authors:	Andrzej Kijko

Institution:	(1) Institute of Geophysics, Polish Academy of Sciences, Pasteura 3, 02-093 Warsaw, Poland

Abstract:	Summary Seven optimal networks consisting of 4 to 10 stations are compared for a given region, where velocity-depth profiles and the distribution of seismic intensity are known. Assuming that the standard error of arrival time is _t=0.05 s and the standard errors of the parameters of velocity-depth profiles are equal to 5% of their values, the average standard errors of the origin time $\langle \sigma _{t_0 } \rangle$ and focus coordinates $\langle \sigma _{x_0 } \rangle , \langle \sigma _{y_0 } \rangle , \langle \sigma _{z_0 } \rangle$ are estimated. The application of optimum methods to the planning of seismic networks in the Lublin Coal Basin is presented, and maps of standard errors of origin time $(\sigma _{t_0 } )$ , depth $(\sigma _{z_0 } )$ and epicenter (_xy) for the case of an optimum network of 6 seismic stations are given.

Keywords:	Seismic network accuracy of location Earthquake location accuracy Location of earthquakes accuracy
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