Figure 3From: Anisotropic Rayleigh-wave phase velocities beneath northern Vietnam Events used for the measurement of interstation dispersion curves. Circles represent the locations of the epicenters, and the colors indicate the depths of the events (red: 0 to 30 km; green: 30 to 100 km; blue: 100+ km). The sizes of the circles are proportional to the event magnitudes.Back to article page