Fig. 10

(Top-Left) Seismic amplitudes (PSD averaged between 0.01 and 0.02 Hz) from Hurricane Isaac on a map. (Bottom-Left) The same amplitude results are plotted as a function of distance from the Hurricane center, indicated by a red triangle in the map. (Top-Right) Pressure amplitudes (PSD averaged between 0.01 and 0.02 Hz) on a map. (Bottom-Right) The same pressure amplitude results are plotted against the distance from the Hurricane Center. The peak amplitude distance is about 80–100 km from the Hurricane center and is likely to be the location of the eyewall of Hurricane Isaac. Amplitude decay is slightly different between seismic data and pressure data