Figure 8. Peak intensity and cumulative intensity of forward and backward waves shown in Fig. 7 versus the delay time (t _d).

Shaded areas indicated where two waves overlap and appear as a single wave peak. Thin grey lines indicate the linear sum FCW_ref1 + FCW_ref2 (top) or BDW_mr + BDW_ref (bottom), while the dashed segments indicate an approximate interpolation; these may be compared with the observed wave magnitude, which results from non‐linear summation. Note that FDW_A→C in Fig. 7 refers to FDW_dia in the absence of interactions with reflected waves. [Color figure can be viewed at wileyonlinelibrary.com]