Questions tagged [tsunami]

A tsunami is a series of waves that occur right after the displacement of a large amount of water. Use this tag for questions about tsunamis, why they happen, and how they occur.

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Would epicenters in less-deep areas of ocean tend to reduce the impact of a resulting tsunami somehow (wave “breaks” before getting there?)

I just felt an earthquake at in a 6 floor building in Taipei, where I am familliar with how they have felt over the years. This one felt particularly vertical, and made me feel queezy, while most ...
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How likely is that next big earthquake (and tsunami) will hit Philippines again?

We recently had an earthquake in Bali (August 5th 2018), then in Palu, Indonesia (October 1st 2018). Considering the distance and time between Bali and Palu, is it more likely that it will be near ...
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2018 Swan Islands earthquake tsunami

How come the strike-slip 7.6 M earthquake, occurring January 9th, 2018, produced no tsunami? Has there ever been any produced in this region?
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Tsunami Characteristics

I got datasets about Tsunami events. According to International Tsunami Information Center and Indian Ocean UNESCO Tsunami center, for an earthquake to cause Tsunami it should have a large magnitude (...
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Was the small Vanuatu Tsunami detected by remote monitors in the ocean before it reached land?

The 20-Nov-2017 Reuters News item Small tsunamis detected in New Caledonia and Vanuatu after magnitude 7 undersea quake says: Small tsunamis were detected and waves may have reached up to one meter ...
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How did the The Fukushima Nuclear Disaster affect Japan's vegetation? [closed]

I am working on an important project please help!
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Why would a Martian tsunami travel at only 200 km/hour, four times slower than on Earth?

The news article Impact crater linked to Martian tsunamis describes results of numerical calculations which address the possibility that a giant martian tsunami triggered by an impact has left ...
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Tsunami - Mathematical classification

I'm interested in knowing which type of wave a tsunami is, in a strictly mathematical sense. I'm gonna cite from Wikipedia for this: As the tsunami approaches the coast and the waters become ...
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How can a tsunami be 'hot'?

I am reading about the Samoan tsunami of 2009, in which several independent accounts by survivors said that the wave was 'hot'. They were running for their lives at the time, so were very remiss in ...
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Would an oceanic asteroid impact really cause a tsunami?

As far as I know tsunamis are caused by landslides at the bottom of the sea. But an asteroid impacting the sea is a different phenomena. Could it still cause a "tsunami" as in an unstoppable mass of ...
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Is the concept of seismogenic zone still relevant after the 2011 Japan earthquake?

The concept of subduction seismogenic zone, where megathrust seisms occur in a layer between an upper and a lower limit is well documented in the 1990/early 2000 literature : Some example : Pacheco,...
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What are 'articulate shells'?

I can not really find a definition, not even in a geologic dictionnary: What are articulate (resp. inarticulate) shells? To be more specific, the term is related to tsunami deposits (tsunamite).
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How accurately can a tsunami be predicted? Have there been any successful evacuations?

With the current instruments in hand, how accurately can we predict tsunamis? Please consider me as a novice with only basic information how tsunamis are formed. Has there ever been a successful ...
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Evidence of a seismic trigger of the Storegga Slide ~8.2ka

The Storegga Slide was a catastrophic underwater landslide that occurred off the coast of Norway about 8,200 years ago. This YouTube clip shows simulations that indicate that this slide resulted in ...
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How does a tsunami affect biology and other matter in its path while in deep water

Is everything in the water column going to be affected?
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Can climate change cause earthquakes, tsunamis, or volcanic eruptions?

Different scientists have brought forth a theory that climate change can cause earthquakes, tsunamis and volcanic eruptions. For example: Professor Bill McGuire of University College London in his ...
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What impact on climate did 2011 earthquake and tsunami have?

The 2011 Tōhoku earthquake and tsunami was one of the biggest in modern history; the earthquake even moved Earth's axis for a very small, but measurable bit. The four years since then is not enough ...
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Mega-tsunami, what is the greatest possible height of a tsunami?

The notion of a taller-than-skyscraper, so called "megatsunami" is not new - with the often-reported 524m (1720 feet) high Lituya Bay tsunami of 1958 is sometimes referred as such (despite the wave ...
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Is Atlanta too far inland and too far above sea level to be affected by the comet in “Deep Impact”?

In "Deep Impact", the president says that "New York City, Boston, Atlanta, Philadelphia, all will be destroyed". New York and Boston are on the water and would be in danger from a tsunami of any size, ...
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Why does the shoreline sometimes recede prior to a Tsunami?

It is well known among regular beach goers that a sudden shoreline drawback is often a warning sign for an impending Tsunami. My understanding of Tsunamis is they they form as a result of the ...
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Is it inevitable that a mega tsunami will hit America?

According to a documentary, "Mega Tsunami - A wave of destruction", most mega tsunamis are caused by landslides creating tsunamis 10 times the size as those caused by earthquakes. It was said that ...
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Why do Tsunamis travel slower than sound?

Tsunamis, in the deep ocean, travel at around 800 kilometers per hour. The speed of sound under water is about 5300 kilometers per hour. Both of these waves are pressure waves, operating in the ...
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Why does every tsunami travel differently?

Tsunamis are quite interesting, as they only happen after a large displacement of water. Usually, the waves travel quite weirdly. Sometimes there are waves which bounce off of land and go back to sea....