Why did Japan have a tsunami?

Tsunami is one of the most important secondary disasters on the seabed, and Sun Shihong said that tsunami will not occur if it occurs inland. In the case of Japan, because the epicenter was located 130 kilometers away on the seabed, not land, the damage and damage caused by the tsunami were much greater than the ** itself.

Tsunamis are caused by vertical dislocation of the Earth's crust. ** The movement of the earth's crust caused by it is both horizontal and vertical. Horizontal dislocation does not cause a tsunami, but vertical dislocation causes a tsunami.

Therefore, when a ** is dominated by vertical dislocation, it is likely to cause a tsunami.

Specifically, when there is a large rise or fall on the seafloor, a large height difference causes a gravity difference. "If the seabed collapses, the seawater will quickly pour into the 'pit', and the seawater will form a drop, and there will be a tsunami. Similarly, if ** causes a bulge in the seabed, it will also cause a height difference and trigger a tsunami.

Because Japan is located at the junction of the Eurasian and Pacific plates, plate movements are caused.

Some online posts say that Japan is conducting another nuclear test on the bottom of the sea, but I don't know if it's true.

Check out what was discussed on Phoenix TV.

Causes of tsunami formation.

A tsunami is a wave of ocean that is highly destructive. The waves caused by this wave movement are turbulent, and the waves it rolls up can reach tens of meters high. This wall of water contains a great deal of energy, and when it washes up on land, it is invincible, often causing serious damage to life and property.

The waves formed by the Chilean tsunami have moved tens of thousands of kilometers without losing their majesty, which shows its great power.

Causes of the tsunami.

A tsunami is a catastrophic wave that is usually caused by a seabed** with an epicenter within 50 kilometers of the ocean floor and above the Richter scale. Tsunamis can also be caused by landslides or volcanic eruptions underwater or along the coast. After a single jolt, the ** wave travels a long distance in an ever-expanding circle on the surface of the sea, just like the wave produced by a pebble falling into a shallow pool.

The tsunami wavelength is greater than the maximum depth of the ocean, and the orbital motion is not much hindered near the ocean floor, and the wave can propagate regardless of the depth of the ocean.

The roaring waves.

The tsunami in Japan was March 11, 2011. At 14:46 local time on March 11, 2011, a tsunami of 9.0 on the Richter scale occurred in the waters of northeastern Japan. In the process, the tsunami killed and lost a large number of people along the coast of northeastern Japan, and caused a nuclear leak that caused a nuclear material to infect medical workers and nearby residents.

Causes of the tsunami in Japan.

The tsunami in Japan is caused by the eruption of a volcano under the sea**.

Destructive waves from submarine landslides or weather changes, with tsunamis reaching speeds of up to 700 to 800 kilometers per hour, can cross the ocean in a matter of hours.

The wavelength can reach hundreds of kilometers and can travel thousands of kilometers with little energy loss. In the vast ocean, the wave height is less than one meter, but when it reaches the shallow water of the coast, the wavelength decreases and the wave height increases sharply, up to tens of meters, forming a wall of water containing huge energy.

Tsunamis are mainly controlled by the topography of the seabed, the geometry of the coastline and the characteristics of the waves, and the roaring waves and ice walls repeat every few minutes or tens of minutes, destroying the embankments, flooding the land, and taking life and property, which is extremely destructive. The global tsunami occurrence area is roughly the same as the ** zone. Unanimous.

The tsunami in Japan was 2011. On March 11, 2011, a strong** tsunami struck off the coast of northeastern Japan that caused the Fukushima Daiichi Nuclear Power Plant.

Occurrence of the highest level of radioactive material.

Spill accidents. After the Richter scale, the epicenter intensity of 7 was followed by fires, tsunamis, and **. According to official Japanese statistics, the disaster killed nearly 10,000 people and left thousands missing.

Tsunami precautions

Do not go near the sea, the mouth of a river. If you hear reports of nearby**, be prepared for a tsunami and pay attention to TV and radio news. If you notice that the tides suddenly rise and fall abnormally, sea level.

Significant drops or big waves.

When attacked, they should evacuate the shore as quickly as possible.

When the sea recedes abnormally before a tsunami, many marine animals such as fish and shrimp tend to be left in the shallows, so they should quickly leave the shore and move higher inland. In the event of a tsunami, ships sailing at sea should not return to port or dock, but should immediately head to the deep-sea zone, which is safer than the coast.

The tsunami in Japan was March 11, 2011. At 14:46 local time in Japan, a tsunami occurred in the waters of northeast Japan, which attracted the attention of the world, and many people paid attention to it, and the tsunami caused serious loss of life and property.

Introduction

The epicenter of this time in Japan is located in Miyagi Prefecture.

In the Pacific Ocean to the east, the depth of the epicenter is 10 kilometers below the sea. A strong earthquake was felt in Tokyo. **The resulting tsunami affected much of the Pacific coast. **Caused by the Fukushima Daiichi Nuclear Power Plant in Japan.

A nuclear accident occurred in units 1-4. April 1, 2011, Cabinet of Ministers of Japan.

At the meeting, it was decided to refer to the ** of 311 as "East Japan Dai".

At present, it seems that it will not be, as of 5 am local time on the 17th, the tsunami warning in Japan has been lifted.

According to Xinhua News Agency, a strong ** occurred in the waters near Fukushima Prefecture in Japan at 23:36 local time (22:36 Beijing time) on the 16th. On the 17th, the Japan Meteorological Agency raised the magnitude of this ** from magnitude to magnitude, and the depth of the epicenter was revised from 60 km to 57 km.

According to CCTV news, Tokyo and other prefectures are obviously feeling, and Miyagi Prefecture and Fukushima Prefecture in Japan are currently issuing tsunami warnings, and it is expected that there may be a 1-meter-high tsunami.

A tsunami is expected to occur along the coast of Ishinomaki Ayukawa in Miyagi Prefecture at 23:50 local time on March 16, and tsunami warnings have been issued in Ishinomaki Port and Sendai Port in Miyagi Prefecture, Soma Port and Onahama Port in Fukushima Prefecture.

No anomalies have been found at nuclear power plants across Japan:

According to Japan, a fire alarm appeared in the No. 5 turbine room of the Fukushima Daiichi Nuclear Power Plant after the incident, but the fire department did not find the fire when it went to the scene.

It is said that there is no change in the monitoring value of radioactive materials at the Fukushima Daiichi nuclear power plant. The spent fuel pool cooling pumps of Fukushima Daiichi Units 1 and 3 stopped working for a time, but are said to have returned to normal.

The Onagawa Nuclear Power Plant in Miyagi Prefecture is said to have no reports of anomalies caused by **, and the No. 1 unit of the Onagawa Nuclear Power Plant is currently in a state of abandonment, and the No. 2 and No. 3 units are in a state of shutdown.

The above content refers to the Beijing News Japan** has caused 3 deaths, and the tsunami warning has been lifted.

In a very short period of time, there were two strong ** in succession, according to the official determination of the Taiwan network, in just a few minutes, the level ** and the level **, located off the east coast of Honshu, Japan, this time **occurred in the coastal area, and belongs to the seabed**, the depth of the epicenter is 10 kilometers, which can be said to be a very serious shallow depth**, such ** is very easy to cause the occurrence of tsunamis, In the vicinity of Japan, there have been serious phenomena such as mudslides, collapsed houses, and cracks in roads. So what everyone is concerned about is whether the successive strong ** in Japan will cause a tsunami, because Japan is relatively close to our country, and if a tsunami occurs, it is likely to affect cities in the sea near our country, causing some unnecessary losses.

Then the data that Japan has been able to count is 4 dead and 131 injured, and in many areas can feel a very strong earthquake, after the ** happened, the relevant departments have begun to prevent and speculate whether there will be a tsunami, according to the local authorities to speculate, if the tsunami can really be generated, the tsunami is likely to reach 1 meter, but this is only speculation, according to the tsunami phenomenon that has occurred up to 30 cm, the average tsunami height of 20 cm, However, it was still a very strong tsunami, causing secondary damage to many surrounding cities and offshore areas.

Therefore, according to the data of local institutions in Japan, Japan's successive strong ** has triggered a number of tsunamis, although it has not reached the guessed height of 1 meter, but the highest has reached 30 cm, and there is a possibility of another tsunami, although the local tsunami height alarm has been lifted, but such a high level of ** is likely to be accompanied by aftershocks, then it is very likely that there will be a more serious tsunami phenomenon again. It is certain that the period of occurrence in Japan** has triggered numerous tsunamis that have had a huge impact on the local coastal areas, especially since the height of the tsunami that can be observed has reached 30 centimeters.

There is a possibility of a tsunami, because the local earthquake is very strong, there are many places to feel it, and the magnitude of the earthquake is very large, there are many places that have collapsed, the local situation is dangerous, and the depth of the epicenter is 10 kilometers, it is very likely to cause a tsunami.

Although they issued a tsunami warning before, they lifted the tsunami warning in time, and there should be no tsunami.

There will be a very severe tsunami, and there will be a large ** in this place. So many people are no longer able to live, and many people have died, and now there are more than 900,000 people without water and electricity.

There will be a tsunami in Japan. The global tsunami zone is roughly the same as the ** zone, with about 80% of the most destructive ** tsunamis recorded in the Pacific Rim. The Japanese archipelago and its adjacent waters account for about 60% of the tsunami in the Pacific Ocean, so Japan is the country that has suffered the most from the tsunami in the world.

If you are interested, you can join me in discussing whether there will be a tsunami in Japan.

1. A tsunami is a catastrophic wave, which is mainly caused by underwater or coastal landslides, volcanic eruptions, submarine **, submarine landslides, or meteorological changes. Tsunamis can reach speeds of 700-800 kilometers per hour and can cross the ocean in a matter of hours.

2. Tsunamis are mainly controlled by the topography of the seabed, the geometry of the coastline and the characteristics of the waves, and the ice wall of the waves repeats itself every few minutes or tens of minutes, destroying the embankment and dusty shore, flooding the land, taking away life and property, and the destructive power is extremely great.

3. The tsunami-prone areas of the world include the Hawaiian Islands, Alaska, Kamchatka-Kuril Islands, Japan and its surrounding areas, China and its adjacent regions, the Philippine Islands, Indonesia regions, and the New Guinea region-Solomon Islands.

4. There are also New Zealand-Australia and the South Pacific region, Colombia-Ecuador northern and Chilean coasts, Central America and the United States, the west coast of Canada, and the northeastern Mediterranean coast.

Based on the introduction of the tsunami above, we can conclude that there will be a tsunami in Japan in response to the question "Will there be a tsunami in Japan?" A tsunami is a catastrophic wave that is usually caused by a seabed with an epicenter within 50 km below the seafloor and a magnitude on the Richter scale**, but also by underwater or coastal landslides or volcanic eruptions.

On March 11, 2011, at 14:46 local time in Japan, a tsunami of the Richter scale** occurred in the waters of northeastern Japan, causing heavy loss of life** and property. **The epicenter was located in the Pacific Ocean east of Miyagi Prefecture, and the depth of the epicenter was 10 kilometers below the sea. A strong earthquake was felt in Tokyo.

**The resulting tsunami affected much of the Pacific coast. **Caused a nuclear leakage accident at Unit 1 4 of the Fukushima Daiichi Nuclear Power Plant in Japan. On April 1, the Japanese Cabinet decided to call this ** "East Japan Dai".

This ** caused long-term aftershocks in the Tohoku, Kanto, Hokuriku, and Tokai regions.

On March 11, 2011, 15,894 people were killed in the cause of the Great East Japan Cause. **Nearly five years later, 2,561 people remain unaccounted for. As time passed, fewer and fewer bodies and remnants were found, but the search for the remains of Iwate, Miyagi, and Fukushima prefectures, where a large number of victims occurred, will continue in the future.

Of the 5 largest tsunamis in history, most of the disasters occurred in Japan!