SWOT satellite records first high-resolution track of major tsunami
Updated
Updated · SciTechDaily · May 1
SWOT satellite records first high-resolution track of major tsunami
6 articles · Updated · SciTechDaily · May 1
The data captured the Pacific-wide wave after the 29 July magnitude 8.8 Kuril-Kamchatka earthquake, the sixth-largest recorded since 1900, using a 120km-wide swath and DART buoy readings.
Researchers said the observations challenge assumptions that very large tsunamis travel intact, instead showing dispersive energy and multiple wave components that matched updated simulations better than traditional models.
Buoy-based inversion also suggested the rupture extended about 400km, not 300km, farther south than earlier estimates, findings that could improve tsunami source analysis and eventually real-time warning forecasts.
What hidden complexities in tsunami waves are satellites now revealing across the world's oceans?
With AI and satellites revolutionizing tsunami science, are we on the verge of real-time forecasting?
How will satellites that track complex tsunami waves change future coastal evacuation plans?
2025 Kamchatka Tsunami Captured by SWOT: A 120-Kilometer-Wide Breakthrough in Tsunami Science and Forecasting
Overview
On July 29, 2025, a powerful magnitude 8.8 earthquake off Russia's Kamchatka Peninsula triggered a vast tsunami across the Pacific Ocean. About 70 minutes later, the SWOT satellite captured the first high-resolution, two-dimensional image of the tsunami wave field, revealing complex dispersive wave patterns that challenged traditional models. By integrating SWOT data with seismic and buoy measurements, scientists refined the earthquake rupture model, showing a deeper rupture without near-trench slip, which explained the tsunami's smaller size compared to past events. This breakthrough observation is revolutionizing tsunami forecasting, enabling more accurate hazard assessments and paving the way for precision coastal safety measures.