Figure 1From: Systematic monitoring of instrumentation health in high-density broadband seismic networks Maps of F-net stations and teleseismic events. (a) Map of F-net stations as of 1 January 2014. Colors in circles represent the broadband sensor type, while open squares show inactive stations. Seismometer conditions at stations enclosed by broken lines were not evaluated in this study. (b) Map of teleseismic events (circles) used in this study. Colors describe centroid depths.Back to article page