Figure 2
From: Palaeo-tsunami inundation distances deduced from roundness of gravel particles in tsunami deposits

Photographs and roundness distributions of gravel particles in source materials and AD 2011 tsunami deposits (E1 tsunami deposits). (A–D) Photographs of samples. (E–H) The histograms show the roundness distributions of the beach, river and AD 2011 tsunami deposits (E1 tsunami deposits). To obtain the roundness distributions, we used only particles 2–8 mm in diameter. N = number of particles. The scale bars in the photographs are 1 cm.