Tag

Tsunami

All articles tagged with #tsunami

environment20 days ago•19 min saved

Greenland landslide unleashes 650-foot mega-tsunami, triggering nine days of global seismic ripples

On Sept. 16, 2023, more than 25 million cubic yards of rock and ice plunged into Greenland’s Dickson Fjord, spawning a 650‑foot mega-tsunami that set off a sustained seismic signal heard around the world for about nine days. The waves produced a regular seiche with measurable surface oscillations, and scientists traced the event to the fjord’s geometry and a landslide, while noting climate-driven glacier retreat as a contributing factor. Using satellite imagery, field observations, and computer models, researchers reconstructed the sequence and highlighted the potential for improved Arctic warning systems as next-generation satellites like SWOT expand monitoring capabilities. The full study appeared in Science and Nature Communications.

via Earth.com|

#environment #greenland #satellites

science22 days ago•6 min saved

Ancient North Sea Impact Fueled a 100-Metre Tsunami, Scientists Confirm

New evidence confirms the Silverpit Crater beneath the North Sea was formed by a ~160-meter asteroid at ~15 km/s in the middle Eocene (43–46 million years ago), generating a tsunami over 100 meters high within minutes.

via Indian Defence Review|

#asteroid #geology #north-sea

science29 days ago•4 min saved

Ancient North Sea asteroid sparked a colossal 100-meter tsunami

Researchers confirm that the Silverpit Crater beneath the North Sea was formed by a 160-meter-wide asteroid about 43–46 million years ago, triggering a tsunami over 100 meters tall and blasting a 1.5-km-high plume of rock and water. Using advanced seismic imaging and analyses of shocked minerals, the study resolves the crater’s origin as an asteroid impact and highlights the rare preservation of an oceanic impact site.

via The Daily Galaxy|

#asteroid-impact #nature-communications #science

science1 month ago•3 min saved

Ancient North Sea asteroid crash unleashed a 100m tsunami, study says

New seismic data and rock fragments confirm the Silverpit feature beneath the southern North Sea is an impact crater formed by a ~160-meter asteroid striking at a shallow angle about 43–46 million years ago, which generated a tsunami over 100 meters high. The findings resolve a long-running debate and place Silverpit among Earth's rare preserved submerged craters, alongside Chicxulub and Nadir.

via ScienceDaily|

#asteroid-impact #north-sea #science

science2 months ago•6 min saved

Satellites Map Pacific Wave Field, Clarifying 35-Meter Wave Claims

New satellite-altimetry analyses show SWOT captured large-scale, two-dimensional ocean-height patterns during the 2025 Kamchatka tsunami and concurrent storm waves, helping refine rupture models and post-event understanding; however, the reported 35-meter waves were a misinterpretation of significant wave height, and real-time hazard alerts still rely on in-situ systems like DART buoys and meteorological models.

via The Daily Galaxy|

#dart #oceanography #satellite-altimetry

science3 months ago•3 min saved

NASA Satellite Reveals Unexpected Tsunami Behavior After Russian Quake

A massive earthquake in Russia triggered a tsunami that was captured in unprecedented detail by the SWOT satellite, revealing complex wave interactions that challenge traditional models and refining the understanding of the quake's rupture length, highlighting the importance of integrating diverse data sources for accurate tsunami prediction.

via Gizmodo|

#oceanography #russian-earthquake #satellite-data

science3 months ago•4 min saved

NASA Satellite Reveals Surprising Tsunami Behavior After Kamchatka Quake

A NASA satellite, SWOT, captured high-resolution data of a complex tsunami triggered by a 8.8 magnitude earthquake off Russia's Kamchatka Peninsula, revealing intricate wave interactions that challenge traditional models and could improve future tsunami predictions.

via ScienceDaily|

#earthquake #nasa #oceanography

world3 months ago•1 min saved

Taiwan Experiences 7.0 Magnitude Earthquake, No Major Damage Reported

A 7.0 magnitude earthquake off Taiwan’s northeastern coast caused minor damage and power outages, with no major injuries reported. Authorities warn of potential aftershocks, but the situation is under control, highlighting Taiwan's ongoing seismic vulnerability.

via CNN|

#aftershocks #earthquake #taiwan

science3 months ago•4 min saved

NASA satellite captures detailed images of Pacific tsunami

NASA and French satellite SWOT captured high-resolution images of a Pacific tsunami caused by a 2025 earthquake, revealing complex wave patterns and challenging traditional models that treat large tsunamis as non-dispersive. The data suggest that dispersion plays a significant role in tsunami behavior, which could improve future forecasting and hazard assessment by integrating satellite, buoy, seismic, and geodetic data. This breakthrough highlights the need to update tsunami models to account for wave dispersion and internal structure.

via Earth.com|

#dispersive-waves #oceanography #satellite

science3 months ago•3 min saved

NASA Captures Massive Tsunami Waves Triggered by Kamchatka Earthquake

NASA's SWOT satellite captured detailed images of a massive 8.8-magnitude earthquake and resulting tsunami off Russia's Kamchatka Peninsula in 2025, providing new insights into tsunami formation and potential for improved early warning systems.

via Yahoo|

#2025 #earthquake #nasa

science3 months ago•0 min saved

NASA Satellites Capture Massive Tsunami Triggered by Kamchatka Earthquake

NASA's satellites captured a striking image of a massive tsunami, highlighting the power of earth observation technology in monitoring natural disasters.

via bgr.com|

#disaster #earth-observation #nasa

science4 months ago•4 min saved

NASA Satellite Provides First High-Resolution View of Pacific Tsunami

NASA's SWOT satellite captured the first high-resolution, space-based view of a major Pacific tsunami caused by the 2025 Kamchatka earthquake, revealing complex wave patterns that challenge existing tsunami models and could improve future forecasting.

via SciTechDaily|

#kamchatka #nasa #oceanography

science4 months ago•2 min saved

NASA Satellite Provides First Close-Up of Massive Pacific Tsunami

A NASA and CNES satellite, SWOT, captured unprecedented high-resolution data of a 2025 tsunami caused by a magnitude 8.8 earthquake, revealing that large tsunamis may break up into smaller waves, which could improve future prediction and warning systems.

via ScienceAlert|

#disaster-prediction #nasa #oceanography

science4 months ago•4 min saved

Satellite Reveals Details of Kamchatka's Massive Tsunami

A NASA and French satellite captured the first high-resolution image of a giant tsunami caused by a 2025 earthquake, revealing complex wave patterns that challenge traditional models and suggest the need for revised tsunami forecasting methods that incorporate dispersion effects and multiple data sources.

via Earth.com|

#dispersive-waves #oceanography #satellite

world5 months ago•2 min saved

Strong Earthquake Off Japan's Coast Triggers Tsunami Advisory

A magnitude 6.9 earthquake struck off Japan's northern coast near Iwate, triggering a brief tsunami advisory that was later lifted, with no immediate injuries or damage reported. The region remains at risk for aftershocks, and the event highlights Japan's ongoing vulnerability to seismic activity, especially given its history with the 2011 Fukushima disaster.

via CBS News|

#disaster #earthquake #iwate