🌊 Tsunami

2D Shallow Water Equations on a continental-shelf bathymetry. Click the ocean to trigger a seafloor rupture and watch long-period waves propagate and pile up at the coast.

Bathymetry Preset

Source Energy

Uplift height 5.0 m

Source radius 12 cells

Damping

Absorption 0.998

Legend

Deep ocean

Shelf

Land

Wave crest

Wave trough

Statistics

Step

Max η (m)

0.0

Speed

—

Energy

—

Shallow Water Equations describe long gravity waves where wavelength ≫ depth. Wave speed c = √(gH): ~200 m/s in 4 km deep ocean, ~10 m/s near shore. This 10× shoaling compresses wavelength and amplifies wave height — Green's Law.

Click ocean to trigger earthquake · Drag to add energy