PostScript version of this figure. The feature at 150 km depth is the first reverberation from the Moho. PostScript version of this figure. Figure 4 S-wave splits from the U.S. and southern Canada compiled from several different studies and publications. Green lines indicate the fast direction and split time of split SKS arrivals.
Red lines indicate the backazimuths of null arrivals in areas where null arrivals are common.
PostScript version of this figure. The map on the left shows the location and focal mechanism of the earthquakes, with triangles indicating the locations of stations used in the CMT analysis. The seismograms are dominated by fundamental mode Love and Rayleigh waves. PostScript version of this figure. Paths to the stations of the MOMA array from earthquakes in the western Pacific.