Global Tsunami Travel Time Calculator
Last updated
Global Tsunami Travel Time Calculator
Real-time hydrodynamic wave propagation modelling and coastal inundation forecasting. Set a magnitude, then click any point at sea to run the scenario.
Method and limits
Deep-water phase speed — v = √(g · d), with
g = 9.81 m/s² and d the estimated ocean depth.
Green's shoaling law — H_c = H_d · (d_d / d_c)^0.25.
As depth falls near the shelf the wavefront compresses; conservation of
flux trades speed for run-up height.
Not an operational forecast. Ocean depth is approximated from latitude rather than read from bathymetry, and distance to shore is an estimate — this is built for teaching and DRR orientation. Life-safety decisions must follow official warning systems.
Real-time hydrodynamic wave propagation modeling and dynamic coastal inundation forecasting.
Seismic Source Parameters
Hydrodynamic Wave Telemetry
Operational Simulator Guide
Step-by-Step Execution:
- Adjust the range slider to calibrate the hypothetical Moment Magnitude ($M_w$).
- Click any marine/oceanic coordinate on the interactive map grid to initialize the tsunamigenic catalyst.
- Analyze the dynamic wavefront propagation rings mapping kinetic energy dispersion vectors.
Telemetry Variable Mapping:
- ⚡ Wave Velocity: Measures the maximum deep-water phase speed directly at the seismic epicenter node, computed prior to shallow coastal bathymetric friction attenuation.
- ⏱️ Estimated Arrival: Isolates the precise temporal window required for the boundary wavefront to impact the absolute nearest sub-aerial shoreline profile.
- 🌊 Coastal Run-up: Forecasts the peak vertical mass elevation the surge will achieve as it strikes the coast and advances inland above mean sea level due to shoaling mechanics.
Hydrodynamic Propagation & Shoaling Methodology
This predictive analysis framework evaluates the non-linear kinematics of shallow-water hydrodynamic wave equations. Rather than running server-side server calls, the calculations process directly within the client interface browser layout to maintain zero latency and a 100% computational uptime footprint.
1. Pelagic Wave Velocity
v = sqrt(g × d)
Governed by gravity ($g = 9.81 m/s^2$) and deep ocean depth ($d$). Mapped velocities (e.g., $690 km/h$) dictate open-ocean movement where amplitude remains sub-metric.
2. Green's Shoaling Law
H_c = H_d × (d_d / d_c)^0.25
As depth decreases near shelves, the wavefront compresses. Conservation of fluid flux forces a reduction in speed while expanding localized onshore run-up height matrix profiles.
🛡️ DRR Operational Blueprint: Aligned with the Sendai Framework priorities, quantifying temporal tracking layers (Arrival) and vertical shore surge limits (Run-up) empowers civil protection entities to draft accurate coastal buffer strategies and mandate structural evacuation thresholds.Geospatial Data Sovereignty: This application executes client-side geodetic calculations independently, honoring decentralized open data telemetry conventions outlined by the OpenStreetMap Foundation.
Disclaimer: This simulator is tailored strictly for academic scenario building, general disaster risk reduction (DRR) orientation, and training exercises. Official emergency life-safety directions must rely on statutory state monitoring lines.
Why is a Multi-Hazard Approach vital?
Traditional risk models evaluate hazards in isolation. Modern resilient designs acknowledge cascading dynamics: a marine seismic trigger directly compromises coastal transport arteries and local medical infrastructure via inundation surges, creating complex, compound logistics blockades.