Fig. 4

Offshore comparisons at 5 min after the occurrence of an earthquake for Model I. a Compares the tsunami height distributions [\(\eta \;({\varvec{r}}_i,t=5\) min)–\(\eta _0\;({\varvec{r}}_i)\); \(i=1\ldots 150\) in Eq. (10)] of Model I (colored lines) with those of scenario A (gray line). b Compares the distributions in the converted wave height changes [\(O_{\mathrm{converted}}\) (\({\varvec{r}}_i,t=5\) min)/\(\rho g\) and \(C_{\mathrm{converted}}\) (\({\varvec{r}}_i,t=5\) min)/\(\rho g\) in Eqs. (8) and (9)]. The line colors used for Model I are the same as those of the S-net shown as triangles in Fig. 3. c, d A close-up plot around the criteria and a wide view of the VRO–VRC diagram, respectively. The area surrounded by the green curves indicates the applied criteria, VRO (\(t=5\) min) \(\ge\) 0.0, VRC (\(t=5\) min) \(\ge\) 0.0, and R (\(t=5\) min) \(\ge\) 0.7. The colored squares represent the selected tsunami scenarios, and the gray crosses represent the unselected tsunami scenarios. The pseudo-observation scenario and scenario A are represented by the purple square at (1, 1) and the green square at (0.94, 0.95) in c, respectively