A STATISTICAL OUTLOOK ON THE PROBLEM OF SEISMIC NETWORK CONFIGURATION

We examine the problem of optimal seismic network configuration. We apply ideas from the statistical literature on optimal experimental design and influential observations. We review several different criteria that have appeared in the literature and propose a new criterion based on equalizing arrival time importance. All the configuration criteria achieve networks that improve the resolution for determining hypocenters. Our new criterion enhances the robustness of the network to outlying observations at the expense of a slight reduction in resolution. The network configuration problem has taken on special importance in the context of monitoring the Comprehensive Nuclear Test Ban Treaty (CTBT) and we discuss the application of the configuration criteria to CTBT monitoring and to on site inspection search areas.

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