Table 1 Lat-Lon/depth and measured45/simulated (0.27 km3 volume; granular slide) arrival times at Tide Gauges 1–4 (TG; Figs 1a, 5a–d; see Supplementary #3), and location/depth at numerical Wave Gauges 5–9 (WG; Fig. 1b).

From: Modelling of the tsunami from the December 22, 2018 lateral collapse of Anak Krakatau volcano in the Sunda Straits, Indonesia

Tide/wave Gauges

(Fig. 1a,b)

Lon E.

(Deg.)

Lat N.

(Deg.)

Measured

Arrival (s)

Simulated

Arrival (s)

Depth

(m)

1. TG: Serang, Jambu

105o 50′ 27.6″

−6o 11′ 21.5″

1920

1870

12.1

2. TG: Ciwandan

105o 57′ 10.8″

−6o 01′ 02.5″

2570

2500

3.7

3. TG: Kota-Angung

104o 37′ 08.5″

−5o 30′ 01.2″

2340

2240

3.7

4. TG: Panjang

105o 19′ 06.1″

−5o 28′ 08.7″

3420

3390

3.9

5. WG

105.4066o

−6.1234o

N/A

28

256.9

6. WG

105.3733o

−6.1524o

N/A

130

67.4

7. WG

105.4246o

−6.0691o

N/A

70

49.8

8. WG

105.4954o

−6.1279o

N/A

205

63.3

9. WG

105.3571o

−6.1361o

N/A

145

95.5

  1. In simulations, AK collapse is assumed to take place at 20:57′ local time (UTC + 7). Listed depth is that in model grid G1 assuming a +1.5 m tide elevation. Difference in arrival time at tide gauges are 30–100 s, compared to the 1 min data interval. Note, as shown in Fig. 5a–d, the simulated arrival time (first crest) is closely identical for both rheologies (viscous or granular collapse); hence a single number is listed in the table. N/A: Not Applicable.
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