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Table 2 Summary of the input parameters and estimated wave characteristics of the tsunami assessment for scenario I and scenario II (in parantheses)

From: Traces of a prehistoric and potentially tsunamigenic mass movement in the sediments of Lake Thun (Switzerland)

Parameter

Symbol

Value (per profile)

Unit

A

B

C

D

Drop height of the slide centroid

Δzsc

242

242

242

242

m

Dynamic bed friction angle

δ

15…17

15…17

15…17

15…17

°

Slide impact velocity

\(V_{s}\)

17…29

17…29

17…29

17…29

m/s

Bulk slide volume

\(\rlap{--} V_{s}\)

20·106 (35·106)

20·106 (35·106)

20·106 (35·106)

20·106 (35·106)

m3

Slide thickness

s

45 (60)

45 (60)

45 (60)

45 (60)

m

Slide width

b

400 (500)

400 (500)

400 (500)

400 (500)

m

Bulk slide density

ρs

1600

1600

1600

1600

kg/m3

Slide impact angle

α

18

18

18

18

°

Still water depth

h

210

210

210

210

m

Radial distance

r

3100

3600

8100

6400

m

Wave propagation angle

γ

0

12

68

− 78

°

Impact radius for γ = 0°

r0,0°

407…466 (456…521)

407…466 (456…521)

407…466 (456…521)

407…466 (456…521)

m

Initial first wave crest amplitude

a0,c1

30…39 (40…52)

30…39 (40…52)

30…39 (40…52)

30…39 (40…52)

m

Initial second wave crest amplitude

a0,c2

23…26 (26…29)

23…26 (26…29)

23…26 (26…29)

23…26 (26…29)

m

First wave crest amplitude

ac1

2…4 (4…6)

2…3 (3…5)

0.2…0.4 (0.4…0.7)

0.3…0.5 (0.5…0.8)

m

First wave trough amplitude

at1

5…7 (7…11)

4…6 (5…8)

0.4…0.7 (0.7…1.2)

0.5…0.9 (0.8…1.4)

m

Second wave crest amplitude

ac2

11…13 (13…16)

10…12 (12…14)

4…5 (4…5)

3…4 (4…5)

m

Run-up angle

β

14

12

6

24

°

Run-up height (second wave)

R

34…40 (39…46)

31…37 (36…43)

13…16 (15…18)

9…11 (11…13)

m

Run-up height (second wave)

R2

54…68 (66…84)

50…63 (61…78)

21…26 (25…32)

12…15 (15…18)

m

  1. Notation according to Evers et al. (2019) and Kastinger et al. (2020). Wave impact locations for propagation profiles A, B, C, D shown in Fig. 1