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. 2013 Jul 4;13(7):8534–8550. doi: 10.3390/s130708534

Figure 4.

Figure 4.

Data set of demonstrative experiments with a shot hitting the ground. (a) SS of No.1; (b) WPNE of No.1; (c) SS of No.2; (d) WPNE of No.2; (e) SS of No.3; (f) WPNE of No.3; (g) SS of noise; (h) WPNE of noise; (i) WPMs of four seismic signals.