Studying tsunamis with GPS satellites
On 30 July, a magnitude 8.8 earthquake off Russia's Kamchatka Peninsula triggered a tsunami that spread across the Pacific Ocean.
Earth Sciences
Oct 15, 2025
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Page 5: Research news on tsunami
A tsunami is a long-wavelength, gravity-driven water wave phenomenon typically generated by large, sudden displacements of the seafloor due to subduction-zone earthquakes, but also by submarine landslides, volcanic eruptions, or impact events. In deep ocean, tsunamis travel at jetliner speeds with low amplitudes and very long periods (minutes to an hour), behaving as shallow-water waves whose phase speed depends on water depth. As they shoal on continental shelves, energy conservation forces rapid increases in wave amplitude and reductions in wavelength and speed, producing highly nonlinear run-up, strong nearshore currents, and complex inundation patterns that are central to hazard assessment and numerical modeling.
Two powerful quakes strike off southern Philippines, killing at least 7 people
Two powerful offshore earthquakes struck the same region in the southern Philippines hours apart on Friday with the first 7.4 magnitude temblor killing at least seven people, setting off landslides and prompting evacuations ...
Environment
Oct 10, 2025
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Computational tool helps forecast volcano slope collapses and tsunamis
For people living near volcanoes, danger goes well beyond lava flows and clouds of ash. Some explosive eruptions can lead to dramatic collapses of the sides of a volcano, like those at Mount St. Helens, Washington, and Anak ...
Earth Sciences
Oct 3, 2025
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Cascadia megathrust earthquake could trigger San Andreas fault
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
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Thermal runaway mechanism can ramp up magnitude of certain earthquakes
In July 2024, a 7.4-magnitude earthquake struck Calama, Chile, damaging buildings and causing power outages. The country has endured violent earthquakes, including the most powerful recorded in history: a 9.5-magnitude "megathrust" ...
Earth Sciences
Sep 30, 2025
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NASA's GUARDIAN tsunami detection tech catches a wave in real time
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
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Rare oceanic plate delamination may explain Portugal's mysterious earthquakes
One of the worst earthquakes in European history ripped through Portugal in 1755, causing a tsunami, fires and shaking that killed tens of thousands of people and caused widespread destruction. Another less well-documented ...
We drilled deep under the sea to learn more about mega-earthquakes and tsunamis
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
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Scientists explore real-time tsunami warning system on world's fastest supercomputer
Scientists at Lawrence Livermore National Laboratory (LLNL) have helped develop an advanced, real-time tsunami forecasting system—powered by El Capitan, the world's fastest supercomputer—that could dramatically improve early ...
Earth Sciences
Aug 12, 2025
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Tsunami detectives at work: Marine geologists discuss the science behind the destructive waves
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
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