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  2. Tsunami - Wikipedia

    en.wikipedia.org/wiki/Tsunami

    When the tsunami's wave peak reaches the shore, the resulting temporary rise in sea level is termed run up. Run up is measured in metres above a reference sea level. [58] A large tsunami may feature multiple waves arriving over a period of hours, with significant time between the wave crests.

  3. Tsunamis in lakes - Wikipedia

    en.wikipedia.org/wiki/Tsunamis_in_lakes

    A tsunami and seiche in Lake Tahoe can be treated as shallow-water long waves as the maximum water depth is much smaller than the wavelength. This demonstrates the impact that lakes have on tsunami wave characteristics, which is different from ocean tsunami wave characteristics because the ocean is deeper, and lakes are relatively shallow in ...

  4. What causes a tsunami? An ocean scientist explains the ... - AOL

    www.aol.com/news/causes-tsunami-ocean-scientist...

    As word of the eruption spread, government agencies on surrounding islands and in places as far away as New Zealand, Japan and even the U.S. West Coast issued tsunami warnings.

  5. Tsunami earthquake - Wikipedia

    en.wikipedia.org/wiki/Tsunami_earthquake

    A tsunami earthquake can be defined as an undersea earthquake for which the surface-wave magnitude M s differs markedly from the moment magnitude M w, because the former is calculated from surface waves with a period of about 20 seconds, whereas the latter is a measure of the total energy release at all frequencies. [2]

  6. Quake prompts brief tsunami warning on the West Coast. Here's ...

    lite.aol.com/news/story/0001/20241205/37a08ee0cc...

    It generated a tsunami that was as high as 167 feet (51 meters), causing an estimated 230,000 deaths. Another magnitude 9.1 earthquake struck in Japan in 2011, creating a tsunami with waves reaching 127 feet (39 meters). The tsunami caused about 18,000 deaths and prompted a nuclear power plant accident. 12/05/2024 17:17 -0500

  7. What to know about Northern California's rare tsunami warning

    lite.aol.com/news/us/story/0001/20241206/c84dc96...

    A warning alert is the most serious of four tsunami alerts, including a watch alert for a possible tsunami and an advisory alert telling people to stay out of the water and away from the shore. The last time California received a warning alert was 2011 when an earthquake in Japan caused about $100 million in damages along the California coast.

  8. Volcanic tsunami - Wikipedia

    en.wikipedia.org/wiki/Volcanic_tsunami

    A volcanic tsunami, also called a volcanogenic tsunami, is a tsunami produced by volcanic phenomena. About 20–25% of all fatalities at volcanoes during the last 250 years have been caused by volcanic tsunamis. The most devastating volcanic tsunami in recorded history was that produced by the 1883 eruption of Krakatoa. The waves reached ...

  9. Megatsunami - Wikipedia

    en.wikipedia.org/wiki/Megatsunami

    A megatsunami is a tsunami with an initial wave amplitude measured in many tens or hundreds of metres.The term "megatsunami" has been defined by media and has no precise definition, although it is commonly taken to refer to tsunamis over 100 metres (330 ft) high. [2]