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Tsunamis

Tsunami are huge waves that form in large bodies of water (e.g., oceans, seas, large lakes), that are caused by abrupt vertical displacement of a huge column of water. The displacement can be caused by naturally occurring events such as earthquakes, landslides, volcano eruptions, etc., and even sometimes from underwater explosions. These can become natural disasters devastating to the people and properties along the shore lines where they ultimately appear, sometimes in waves as big as hundreds of feet high or higher.

2,290 Questions

How can a tsunami go so fast?

The speed can be from winds, slopes, maybe because of the rate at which the ground moves in an earthquake, or the massive displacement from a landslide. These all are causes of why a tsunami can move so fast.

A little more...Tsunamis are not wind waves, and move much faster than wind waves, so the wind, slopes, etc. do not in fact make much difference in the overall Speed Over Ground (SOG) of a tsunami.

Instead, it's more related to wavelength. Tsunamis have a very small height or amplitude but a very long wavelength, and the math shows waves with long wavelengths travel faster.

The slippage of the earth, superfast asteroid or meteor strikes, localized, nuclear blasts, and the like can create tsunami waves. Wind doesn't.

In mid-ocean, where there's no friction against the bottom, a tsunami can travel roughly between 550-700MPH. As the bottom shallows, they slow down and pile up.

How exactly do tidal experts use sine waves in the sea?

The gravitational effect of the moon on bodies of water on the earth create a simple harmonnic motion (SHM) which manifests itself as semi-diurnal tides: that is, two hight tides and two low tides in approximately one day. The interval between two high todes (or two low tides) is approx 12 hours and 25 minutes.

The tidal effect is very well modelled by SHM, for which the sine (or cosine) waves are solutions.

The gravitational effect of the sun and local geography also play a part in tides.

What day was the tsunami in Japan 2011?

The tsunami in Japan occurred on March 11, 2011. It was caused by a massive undersea earthquake off the coast of Tohoku, Japan, which triggered devastating waves that resulted in widespread destruction and loss of life.

What last disaster happened in Japan?

As of September 2021, the last major disaster in Japan was Typhoon Mindulle in August 2021, which caused strong winds, heavy rain, and flooding in several regions of the country. However, Japan experiences frequent natural disasters like earthquakes, typhoons, and tsunamis.

What was Pakistan response on tsunami in 2004?

Pakistan responded by sending military helicopters and establishing field hospitals to assist with rescue and relief efforts in the aftermath of the 2004 tsunami. They also dispatched medical teams, food supplies, and relief goods to the affected areas in neighboring countries like Indonesia and Sri Lanka.

How big was the japan tsunami?

The earthquake generated tsunami on March 11, 2011 produced waves that surpassed four story buildings, or more than 40 feet, as witnessed in Shizugawa and elsewhere near Japan's coast.

The tsunami was so powerful its waves traveled the entire Pacific ocean and were felt from the coasts of Alaska to that of Chile.

How fast does the water move tsunami?

In deep water, a tsunami can travel at speeds up to 500 mph (800 km/h). As it approaches shallow waters near the coast, the speed decreases but the height of the wave increases, which is what can make tsunamis so devastating when they make landfall.

Where did the tsunami in japan start?

The tsunami in Japan on March 11, 2011 was triggered by a massive undersea earthquake off the coast of Tohoku. This earthquake, known as the Tohoku earthquake, happened along the fault line where the Pacific Plate subducts beneath the North American Plate, generating the powerful tsunami waves that caused extensive damage along the Japanese coast.

How long after the earthquake in Japan did the tsunami hit in 2011?

The tsunami hit Japan about 30 minutes after the earthquake on March 11, 2011. The earthquake's epicenter was off the east coast of Japan, generating a large tsunami that caused widespread devastation along the country's coastline.

Was this last tsunami caused by oil drilling?

No, tsunamis are primarily caused by underwater earthquakes, landslides, or volcanic eruptions. Oil drilling does not directly cause tsunamis. However, it can have negative environmental impacts if not conducted properly, which can indirectly affect marine ecosystems and potentially contribute to increased geological instability.

Is Sanibel Island in Fla. in any danger from the Japanese Tsunami?

Sanibel Island, located on the Gulf coast of Florida, is not in any danger from the Japanese Tsunami. Tsunamis lose energy as they travel across large distances, and the Gulf of Mexico acts as a barrier that prevents the tsunami waves from reaching the shorelines of Florida.

Is it the first time an earthquake and TSUNAMI hit Japan?

No. It is only one of many times that an earthquake and tsunami have hit Japan. Earthquakes in subduction zones such as the one of the coast of Japan often trigger tsunamis. The March 2011 earthquake, at magnitude 9.0, was the strongest on record in Japan though.

How large is the fishure in the bottom of the ocean where the earthquake in Japan hit?

The Japan Trench is about 8,046 meters (26,398 feet) deep at its deepest point, which is one of the deepest parts of the Earth's oceans. The earthquake in Japan in 2011 occurred along the seafloor of the Japan Trench, resulting in a devastating tsunami.

More or less How many people died in Japan's tsunami 2011?

There is no way of knowing yet. With the aftershocks going on and rubble everywhere, no one can get an exact headcount as of right now.

So far, from 15th March 2011, over 10,000 people are dead.

What was the longitude and latitude of Japan's tsunami?

The earthquake that triggered Japan's tsunami in 2011 had a latitude of 38.297°N and a longitude of 142.372°E. The earthquake occurred off the coast of the northeastern region of Japan's main island of Honshu.

Did the Nintendo factory in japan get hit by the tsunami?

No, the Nintendo factory in Japan was not directly hit by the tsunami in 2011. However, the company did face some production delays and challenges due to the overall impact of the natural disaster on the region's infrastructure and supply chain.

Can a tsunami hit West Virginia?

It is highly unlikely for a tsunami to hit West Virginia as it is a landlocked state located far from any major bodies of water or tectonic plate boundaries where tsunamis typically originate. Tsunamis are more commonly observed in coastal regions near oceans or seas.

How many killed so far in japan tsunami?

As of now, more than 15,000 people have been confirmed dead in Japan following the tsunami that occurred on March 11, 2011. Additionally, thousands more were injured and went missing as a result of the disaster.

Can a 1.0 earthquake create a tsunami?

No, a 1.0 magnitude earthquake is too small to generate a tsunami. Tsunamis are typically triggered by large earthquakes with magnitudes of 7.0 or greater that displace a significant amount of water.

Will the tsunami hit Fresno?

No, Fresno is located inland and is not at risk of being directly affected by a tsunami. Tsunamis are caused by underwater earthquakes or volcanic eruptions, and their impact is typically limited to coastal areas.

How long did it take the tsunami take to get from Japan to Hawaii in March 2011?

The Pacific Tsunami Warning Center estimated first arrival around 7 1/2 hours after the quake, or around 3:15am HST.

Does a tsunami speed up as it approaches land?

Yes, a tsunami can speed up as it approaches shallower waters near the coast due to the conservation of energy principle. This can cause the height of the wave to increase, making it more destructive when it reaches land.

How tall was the 2011 tsunami in Japan?

The tsunami's height was recorded to be about 33 feet. Many counts say that the number is much higher, even as high as a 3-4 story building.

Can a tsunami hit Fresno?

No, Fresno is located inland in California's Central Valley, far from the coast. Tsunamis are typically caused by underwater earthquakes or volcanic eruptions near coastal regions, so Fresno is not at risk of being directly affected by a tsunami.