Table 1.

Some scaling relations relevant for landslide tsunamigenesis. t_c is the critical time scale for the duration of the seabed displacement introduced by Hammack [72], T represents a typical wave period, h the undisturbed water depth, d the landslide thickness and g the acceleration of gravity. Additional quantities are explained in the main text.

explanation	formula	reference/use
tsunami Froude number		[18,73]
landslide Froude number
scaled landslide thickness	S=d/h=(Fr/Frls)2	[18,73]
dispersion time scale	τ/t=6h/gT3	[60,70,74]
Hammack's crest elevation	ηc/h∝dℓ/[h⋅c0⋅tc]	[72]