Tsunami Travel-Time & Wavefront Map: Understanding Seismic Waves in Water

What Tsunamis Are

Tsunamis are large ocean waves typically caused by underwater disturbances such as earthquakes or landslides. These waves can travel across entire oceans at speeds exceeding 800 kilometers per hour, but their height is usually minimal in deep water.

When tsunamis reach shallow waters near the coast, they slow down and increase in height due to the interaction between wave speed and water depth.

The Physics of Tsunami Propagation

Tsunami waves propagate as dispersive waves, meaning their speed depends on the wavelength. The eikonal equation is used to model this behavior in the simulation, where c = sqrt(g * h) represents the wave speed based on gravitational acceleration (g) and water depth (h).

Green's Law describes how tsunami amplitudes change as they approach shallower waters, a critical factor for predicting coastal impacts.

Why Tsunami Travel-Time Matters

Knowing the travel time of tsunamis is crucial for early warning systems and evacuation plans. The simulation helps in understanding how different bathymetric features affect wave propagation.

By visualizing the wavefront map, we can predict where and when a tsunami will reach specific locations, aiding in effective disaster management strategies.

Real-World Applications

The principles of tsunami travel-time and wavefront mapping are applied in real-world scenarios to protect coastal communities. For example, the Pacific Tsunami Warning Center uses similar models to issue timely alerts.

Understanding these phenomena also aids in designing better infrastructure and emergency response plans for areas prone to tsunamis.

Frequently asked questions

Try it live

Everything above runs in your browser — open Tsunami Travel-Time & Wavefront Map (2D) and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.