Improving tsunami hazard assessments depends on understanding what happens at the moment an earthquake ruptures beneath the seafloor, especially near deep-ocean trenches where measurements are often ...

A recent study linked to a powerful earthquake near Russia’s Kamchatka Peninsula has offered a closer look at how tsunamis begin beneath the ocean surface. Using data from the SWOT satellite mission, ...

About 1 hour after the earthquake, SWOT captured the offshore tsunami wave field near Kamchatka shown as two red–blue measurement swaths. These data constrained the inferred initial tsunami ...