Tsunamis are long-wavelength, low-amplitude sea waves generated by large, impulsive disturbances of the ocean, most commonly co-seismic seafloor displacement along subduction zones, but also volcanic eruptions, landslides, or submarine mass failures. They propagate as shallow-water gravity waves with phase speeds governed primarily by ocean depth, enabling rapid trans-oceanic travel with minimal energy loss. In deep water they exhibit small surface amplitudes and long periods (minutes to tens of minutes), amplifying dramatically through shoaling, refraction, and resonance effects on continental shelves and in coastal basins. Scientific research focuses on source characterization, wave propagation modeling, inundation mapping, and hazard assessment for early warning and coastal risk mitigation.
When the tectonic subduction zone beneath the Pacific Northwest moves, it does so in dramatic fashion. Not only is ground shaking from a magnitude 9+ earthquake incredibly destructive, the event triggers tsunamis and landslides ...
Earth Sciences
Oct 3, 2025
0
389
A massive earthquake and subsequent tsunami off Russia in late July tested an experimental detection system that had deployed a critical component just the day before.
Earth Sciences
Sep 12, 2025
0
73
Far beneath the waves, down in the depths of the Japan Trench—seven kilometers below sea level—lie hidden clues about some of the most powerful earthquakes and tsunamis on Earth.
Earth Sciences
Aug 27, 2025
0
48
Towering walls of water traveling at the speed of a jetliner, with coastal communities from Japan and Hawaii to South America and the U.S. West Coast in their path.
Earth Sciences
Aug 8, 2025
0
56
When an enormous 8.8 magnitude earthquake struck near Russia's Kamchatka Peninsula, the impact reached far beyond its epicenter. In the passing hours, tsunami alerts were issued by several nations with coastlines along the ...
Earth Sciences
Aug 6, 2025
0
49
If your home was destroyed by a sudden disaster that you couldn't control, you would hope that at the very least, your insurance would cover your losses. However, disaster risk financing systems are struggling to keep pace ...
Earth Sciences
Aug 4, 2025
0
27
The earthquake in Russia's Kamchatka peninsula on July 30, 2025, may have been one of the most severe on record, with a magnitude of 8.8. But innovations in science and technology gave governments vital time to warn and evacuate ...
Environment
Jul 31, 2025
0
27
The earthquake near the east coast of the Kamchatka peninsula in Russia on July 30, 2025 generated tsunami waves that have reached Hawaii and coastal areas of the US mainland. The earthquake's magnitude of 8.8 is significant, ...
Earth Sciences
Jul 30, 2025
0
51
A volcano in Russia's far east erupted on Wednesday, Russian scientists said, hours after a major quake prompted evacuations and tsunami alerts across parts of the Pacific coast.
Environment
Jul 30, 2025
0
52
One of the ten largest earthquakes ever recorded just struck Kamchatka, the sparsely populated Russian peninsula facing the Pacific. The magnitude 8.8 quake had its epicenter in the sea just off the Kamchatka coast.
Environment
Jul 30, 2025
0
33
