Tsunamis cannot be predicted

Typhoon Mentwai, Indonesia: Paralysis equipment

One of the most devastating consequences that earthquakes are caused by the coast is the rise of massive tsunamis that are devastatingly unstoppable, it sweeps away everything along the way. mine. However, until today, scientists around the world are still living around with a seemingly simple question: Why is there a tsunami phenomenon, why is there a tsunami near the sea but there are areas near the sea do not have tsunamis or very rarely occur?

If we can really know the exact time and place that will form a tsunami, be sure that tons of horrific tragedies caused by tsunamis on the Indonesian island nation in October 2010 should be avoided. , and minimize the amount of unspeakable damage from this terrifying natural disaster. An earthquake with an epicenter intensity measuring 7.5 Richter took place at the end of Monday, October 25, 2010 in Indonesia, the impact of earthquakes caused a tsunami, photos directly to the Mentawai Islands, west of Indonesia.

The epicenter of the previous earthquake lies about 78 km west of Nam Pagai Island in the Mentawai archipelago, at a depth of 20 km below the Pacific Ocean. Immediately thereafter, in the first few minutes after the earthquake broke out, the Indonesian government noted the threat of the tsunami but then did not understand for what reason it did not increase the level of influence. let the people know but instead abolish the warning . this is very accurate. Accordingly, meteorologists from the Tsunami Warning Center (TWC) in the Pacific issued a report claiming the danger of a tsunami showing signs of the time, but reported. The above has been ignored. However, the later developments made every prediction " wrong " before suddenly turn into reality.

On the morning of October 26, 2010, a huge wave of nearly 3 meters high, with a loud sound like a wave hit the Mentawai Islands in front of the dumbfounded eyes of local residents, despite the The scientist warned but it was a tsunami that suddenly made it impossible to keep up.

Nam Pagai Island belongs to the Mentawai archipelago, where the tsunami destroyed 80% of the housing system. Many people were killed in this natural disaster, even though many people were reported missing. In the village of Betu Monga, where about 200 people live, 160 people left in the tsunami, most of them women and children. In the South Pagai Island, tsunamis have carved a hole 600 meters deep on the coast of the villages, on the North Pagai Island, the cruel waves have crumbled houses. Sipura Island is also devastated. Approximately 3,000 people have run refugees to the tsunami victims' centers. According to preliminary data, after the devastating tsunami receded, there were about 270 civilians killed and nearly 500 people believed to be missing yet to find the body.

Hypothesis related to tsunamis, earthquakes

Many people have always heard about the danger of tsunami disaster through the mass media and many people have become victims, and many competent agencies have not yet made the following optimal decision every time an earthquake occurred on the territory of their own country, because after the earthquake there must be tsunamis, and these two threats happened in parallel at the same time, so it was impossible to avoid it. On the other hand, many scientists have not made accurate predictions. In this case, some people have a hunch about something, but criticize those who say ' malignant mouths ', there are those who do not believe 100% about the tsunami predictions that are about to happen. thought it was an infamous joke.

Where do tsunamis come from? There are those who believe that tsunamis (from Japanese waters) occur by some objective reasons. It may have come from an undersea earthquake (as happened in the Mentawai Islands in recent days) or it formed as a result of volcanic lava eruption (similar to the battle The tsunami formed after the volcanic activity Krakatoa (Indonesia) opened in 1883, burned more than 5,000 ships and killed 36,000 people. On the other hand, there is a hypothesis that the tsunami was caused by the seabed landslide (causing tsunami disaster in New Guinea in 1998) as well as the sudden change in atmospheric pressure on the surface. ocean (this phenomenon usually occurs around the Balearic Islands (in the western Mediterranean Sea of ​​Spain), the locals call it ' Rissaga ').

However, the main reason for the appearance of giant waves is the seabed earthquakes around the islands on the surface of the oceans, with the epicenter at the bottom of the islands. But what is the exact cause of the wave 'head tilt'? If we remember that, during the time of the seabed earthquake that was part of the earth's crust that was ' punctured ': Some were compressed, others ' heads were up' and changed in shape. surface of the seabed. Due to the compression of the water and the speed of the process of deforming the topography of the seabed, it causes the water layer above the surface to be shifted, resulting in a higher level of water on the surface of the ocean than normal and cause tsunami phenomenon.

Further, once the water rises, it will form a wave that emits sound vibrations with great intensity, normal waves that do not hear clearly, or at least, but with tsunamis the sound intensity is raised. At the maximum level, the waves start to " expand " and spread out at an extremely fast rate (estimated from 50 km / hour to 1,000 km / hour). In terms of logic, earthquakes along coastal areas can create tsunamis so scientists should have accurate forecasts based on parameters of geological tectonic activities at dangerous areas. However, it is easy to say, but it is difficult to get started. In fact, there have been previous observations that have noted that some earthquakes with destructive power did not create tsunamis. Conversely, sometimes some small cracks in the Earth's crust can cause massive tsunamis on the sea surface. Honestly, the prevention of potential dangers from tsunamis is not an easy-to-answer problem, so is it necessary to consolidate the system of very modern machines to serve the task of measuring strength? Earthquakes in areas where events occur.

Can tsunami be prevented?

The recent tsunami disaster in Indonesia has shocked the whole world, officials at the Tsunami Warning Center (TWC) in the Pacific have been wondering when the earthquake is It's normal and don't think that tsunamis can happen immediately afterwards. No one thinks that the consequences are so catastrophic. The cost of rebuilding the affected areas of the Mentawai archipelago must be very heavy, especially the cost of re-stabilizing life for disaster survivors will inevitably ' blow away ' some. The budget is not small for the Indonesian government. But can tsunami ' gestures ' really be predictable? In fact, the fear of tsunami disaster was the subject of research by many leading scientists in Russia at the beginning of the 21st century. They all agreed that tsunamis only occurred in " special regions". 'on the ocean floor, called by the scientific name' seismic gap '.

As we know, once studied in the Geography textbook, the earth's crust (including the ocean), forming the surface of our planet, does not have to stand still but always move. cease. In this case, a disk will " slide " up or down the other disks. The result of each ' slip ', the geological plates on the ocean floor form the ' shells ' of the continents, which will form a continental bottom rubbing process. Researchers have found that the coastal zone earthquakes are occurring in places like this.

In such a case, the seismographer Sergey Fedotov in the 1970s observed different parts of the area taking on various operational attributes. Some places often vibrate, others vibrate very little or remain dormant for hundreds of years. Mr. Sergey Fedotov called such areas ' seismic gaps ' and seismic gaps are really dangerous because of continuous movement. Sometimes it is silent, but sometimes it forms violent explosions, because over the years, these areas suffer from a great pressure . As a result, gaps swelled and exploded, pushing sea water from below to soar above the sea surface, forming tsunamis.

Shortly thereafter, seismologist Sergey Fedotov made predictions about the exact time and place of the tsunami in the Kuril Islands (Sakhalin, Russia), this is one of the illustrations. most influential then Soviet scientists applied a method to accurately predict the source of the disaster. Therefore anticipating tsunamis can be a difficult problem but not impossible. Currently, scientists are making detailed maps of areas with ' seismic gaps ' in the oceans of the planet. When this great scientific work is completed, it is believed that the messages from seismologists will be an ultimatum to help humankind avoid the loss and pain of the tsunami in Indonesia. last October