Natural disasters earthquake. Natural disasters have transformed our land

An avalanche is a huge mass of snow that periodically falls in the form of landslides and avalanches from steep ridges and slopes of high snowy mountains. Avalanches usually move along the weathering ruts existing on the slopes of the mountains, and in the place where their movement stops, in river valleys and at the foot of the mountains, they deposit snow piles, known as avalanche cones.

In addition to occasional glaciers and hail avalanches, periodic winter and spring avalanches are distinguished. Winter avalanches occur due to the fact that freshly fallen loose snow, leaning on the icy surface of old snow, slides over it and rolls down in masses on steep slopes from insignificant causes, often from a shot, a scream, a gust of wind, etc.

The gusts of wind caused by the rapid movement of the snow mass are so strong that they break trees, rip off roofs and even destroy buildings. Spring avalanches are caused by melting water breaking the bond between soil and snow cover. The snow mass on steeper slopes breaks off and rolls down, capturing in its movement stones, trees and buildings encountered on the way, which is accompanied by a strong rumble and crackling.

The place from which such an avalanche rolled down is in the form of a bare black clearing, and where the avalanche stops moving, an avalanche cone is formed, which has a loose surface at first. In Switzerland, avalanches are a common occurrence and have been the subject of repeated observations. The mass of snow delivered by individual avalanches sometimes reaches 1 million or even more m³.

Avalanches, except for the Alps, were observed in the Himalayan mountains, Tien Shan, in the Caucasus, in Scandinavia, where avalanches breaking down from mountain peaks sometimes reach fiords, in the Cordillera and other mountains.

Sel (from the Arabic "sail" - "stormy stream") is a water, stone or mud stream that occurs in the mountains when rivers overflow, snow melts or after a large amount of precipitation. Similar conditions are typical for most mountainous regions.

According to the composition of the mudflow mass, mudflows are divided into mud-stone, mud, water-stone and water-dressing, and according to physical types - disconnected and connected. In non-cohesive mudflows, the transport medium for solid inclusions is water, and in coherent mudflows, a water-ground mixture. Mudflows move along the slopes at a speed of up to 10 m/s or more, and the mass volume reaches hundreds of thousands, and sometimes millions of cubic meters, and the mass is 100-200 tons.

Mudflows sweep away everything in their path: they destroy roads, buildings, etc. To combat mudflows on the most dangerous slopes, special structures are installed and a vegetation cover is created that holds the soil layer on the mountain slopes.

In ancient times, the inhabitants of the Earth could not find the true cause of this event, therefore, they associated the volcanic eruption with the disfavor of the gods. Eruptions often caused the death of entire cities. So, at the very beginning of our era, during the eruption of Mount Vesuvius, one of the greatest cities of the Roman Empire, Pompeii, was wiped off the face of the earth. The ancient Romans called the god of fire a volcano.

Volcanic eruption is often preceded by an earthquake. In time, in addition to lava, hot stones, gases, water vapor, and ash fly out of the crater, the height of which can reach 5 km. But the greatest danger to people is precisely the eruption of lava, which melts even stones and destroys all life in its path. During one eruption, up to several km³ of lava is ejected from the volcano. But a volcanic eruption is not always accompanied by a lava flow. Volcanoes can be dormant for many years, and the eruption lasts from several days to several months.

Volcanoes are divided into active and extinct. Active volcanoes are those whose last eruption is known. Some volcanoes last erupted so long ago that no one remembers it. Such volcanoes are called extinct. Volcanoes that erupt every few thousand years are called potentially active. If in total there are about 4 thousand volcanoes on Earth, of which 1340 are potentially active.

In the earth's crust, which is under the cover of the sea or ocean, the same processes take place as on the mainland. Lithospheric plates collide, causing tremors in the earth's crust. There are active volcanoes at the bottom of the seas and oceans. It is as a result of underwater earthquakes and volcanic eruptions that huge waves are formed, which are called tsunamis. This word, translated from Japanese, means "giant wave in the harbor."

As a result of the shaking of the ocean floor, a huge column of water sets in motion. The farther from the epicenter of the earthquake the wave moves, the higher it becomes. As the wave approaches land, the lower layers of water hit the bottom, further increasing the power of the tsunami.

The height of a tsunami is usually 10-30 meters. When such a huge mass of water, moving at speeds up to 800 km/h, hits the shore, nothing living is able to survive. The wave sweeps away everything in its path, after which it picks up fragments of destroyed objects and throws them deep into the island or mainland. Usually, the first won is followed by several more (from 3 to 10). Waves 3 and 4 are usually the strongest.

One of the most destructive tsunamis hit the Commander Islands in 1737. According to experts, the wave height was more than 50 meters. Only a tsunami of such power could throw so far on the island the inhabitants of the ocean, whose remains were found by scientists.

Another major tsunami occurred in 1883 after the eruption of the Krakatau volcano. Because of this, a small uninhabited island, on which Krakatoa was located, fell into the water to a depth of 200 meters. The wave that reached the islands of Java and Sumatra reached 40 meters in height. As a result of this tsunami, about 35 thousand people died.

Tsunamis do not always have such dire consequences. Sometimes giant waves do not reach the shores of continents or islands inhabited by people and remain practically unnoticed. In the open ocean, before the collision with the coast, the height of the tsunami does not exceed one meter, so for ships far from the coast it does not

An earthquake is a strong vibration of the earth's surface caused by processes occurring in the lithosphere. Most earthquakes occur in the vicinity of high mountains, since these areas are still forming and the earth's crust is especially mobile here.

Earthquakes are of several types: tectonic, volcanic and landslide. Tectonic earthquakes occur when mountain plates are displaced or as a result of collisions between oceanic and continental platforms. During such collisions, mountains or depressions are formed and the surface oscillates.

Volcanic earthquakes occur when flows of hot lava and gases press down on the surface of the Earth. Volcanic earthquakes are usually not too strong, but can last up to several weeks. In addition, volcanic earthquakes are usually the forerunners of a volcanic eruption, which threatens with more serious consequences.

Landslide earthquakes are associated with the formation of voids underground, arising under the influence of groundwater or underground rivers. At the same time, the top layer of the earth's surface collapses down, causing small shaking.

The place where an earthquake occurs (collision of plates) is called its source or hypocenter. The area of ​​the earth's surface where an earthquake occurs is called the epicenter. It is here that the most severe destruction occurs.

The strength of earthquakes is determined on a ten-point Richter scale, depending on the amplitude of the wave that occurs during the vibration of the surface. The larger the amplitude, the stronger the earthquake. The weakest earthquakes (1-4 points on the Richter scale) are recorded only by special sensitive instruments and do not cause damage. Sometimes they manifest themselves in the form of glass trembling or moving objects, and sometimes they are completely invisible. Earthquakes of 5-7 on the Richter scale cause minor damage, and stronger ones can cause complete destruction of buildings.

Seismologists study earthquakes. According to them, about 500,000 earthquakes of various strengths occur on our planet every year. About 100 thousand of them are felt by people, and 1000 cause damage.

Floods are one of the most common natural disasters. They make up 19% of the total number of natural disasters. Flooding is the flooding of land that occurs as a result of a strong rise in the water level in a river, lake or sea (spill), due to the melting of snow or ice, as well as heavy and prolonged rains.

Depending on the cause of the flood, they are divided into 5 types:

High water - a flood that occurs as a result of melting snow and the release of a reservoir from its natural banks

Flood - a flood associated with heavy rains

Flooding caused by large accumulations of ice that clog the riverbed and prevent water from flowing downstream

Floods caused by strong winds that push water in one direction, most often against the current

Floods resulting from a dam or reservoir failure.

Floods and floods occur every year wherever there are full-flowing rivers and lakes. They are usually expected, flood a relatively small area and do not lead to the death of a large number of people, although they cause destruction. If these types of floods are accompanied by heavy rains, then a much larger area is already flooded. Usually, as a result of such floods, only small buildings are destroyed without a reinforced foundation, communication and power supply are disrupted. The main inconvenience is the flooding of the lower floors of buildings and roads, as a result of which the inhabitants of the flooded areas remain cut off from land.

In some areas where floods are most frequent, houses are even raised on special piles. Floods resulting from the destruction of dams have a great destructive power, especially since they occur unexpectedly.

One of the most severe floods occurred in 2000 in Australia. Heavy rain did not stop there for two weeks, as a result of which 12 rivers immediately overflowed their banks and flooded an area of ​​200 thousand km².

To prevent floods and their consequences during the floods, the ice on the rivers is blown up, breaking it into small ice floes that do not prevent the flow of water. If a large amount of snow falls during the winter, which threatens with a strong flood of the river, residents from dangerous areas are evacuated in advance.

Hurricane and tornado are atmospheric vortices. However, these two natural phenomena are formed and manifest themselves in different ways. A hurricane is accompanied by a strong wind, and a tornado occurs in thunderclouds and is an air funnel that sweeps away everything in its path.

The speed of a hurricane wind on Earth is 200 km/h near the earth. This is one of the most destructive phenomena of nature: passing over the surface of the earth, it uproots trees, rips off the roofs of houses, and brings down the supports of power lines and communications. A hurricane can exist for several days, weakening and then gaining strength again. The danger of a hurricane is assessed on a special five-point scale, which was adopted in the last century. The degree of danger depends on the speed of the wind and on the destruction that the hurricane produces. But terrestrial hurricanes are far from the strongest. On the giant planets (Jupiter, Saturn, Uranus, Neptune), hurricane wind speeds reach 2000 km/h.

A tornado is formed when moving unevenly heated layers of air. It spreads in the form of a dark sleeve towards the land (funnel). The height of the funnel can reach 1500 meters. The funnel of the tornado twists from the bottom up counterclockwise, sucking in everything that is next to it. It is because of the dust and water captured from the ground that the tornado acquires a dark color and becomes visible from afar.

The speed of the tornado can reach 20 m/s, and the diameter can be up to several hundred meters. Its strength allows uprooted trees, cars and even small buildings to be lifted into the air. A tornado can occur not only over land, but also over the water surface.

The height of a spinning air column can reach a kilometer and even one and a half kilometers, it moves at a speed of 10-20 m / s. Its diameter can be from 10 meters (if the tornado passes over the ocean) to several hundred meters (if it passes over the ground). Often a tornado is accompanied by a thunderstorm, rain or even hail. It exists much less than a hurricane (only 1.5-2 hours) and is able to travel only 40-60 km.
The most frequent and strong tornadoes occur on the west coast of America. Americans even assign human names to the largest natural disasters (Katrina, Denis). A tornado in America is called a tornado.

What do Yellowstone National Park and Santorini have in common? Yes, they are a wonderful natural structure, they are visited by hundreds of thousands of tourists to admire the incredible sights. But few of them realize that these and similar beauties arose as a result of large-scale cataclysms that suddenly hit the Earth and caused the death of the inhabitants of the buried lands. Today, these territories are reserved places intended for large or small number of tourists, depending on their openness and accessibility.

Asteroid Chicxulub and the Yucatan Trench. The Yucatan Peninsula is completely cut by deep depressions. They are called cenotes. They contain water. Moreover, the peculiarity of these reservoirs is the horizontality of the water layers. The first 10 meters from the surface are filled with fresh water. It was she who saved the Mayan tribes in times of drought. The bottom layer is salty. The layers do not mix with each other and remain crystal clear for hundreds of years. In some sinkholes, the Indians arranged donations, many artifacts of which were found by archaeologists. Today these places are full of peace and a place to get acquainted with the life of Indian ancestors. Setons owe their formation to the Chicxulub asteroid. He left a huge crater, which became the cause of the circle of dips located around. Scientists have calculated that the diameter of this one of the most powerful celestial bodies in a collision with the Earth was almost 250 km. Presumably, this asteroid is responsible for the extinction of living creatures of the Cretaceous period.

Glaciers and Niagara Falls. At first, the cause of the Niagara Falls was considered an asteroid, as in the depressions of the Yucatan. But scientists have found that the horseshoe-shaped cliff was not created immediately, but gradually - during the Great Ice Age. The layers of ice then reached 3 kilometers. When they began to melt and shift, falling water streams formed, forming a magnificent complex of high rocks, from which 170 thousand cubic meters fall. meters per minute. Today, against the background of these magnificent noisy waters, tourists and couples of romantics in love are filmed.

Crater lake. Already from the name it is clear that this reservoir, located in Oregon, is an opening formed from the collapsed top of the volcano. Its depth in some parts reaches 600 meters. The prehistoric volcano erupted almost 8 thousand years ago. His power was so powerful that fragments of the volcanic rock Crater Lake (Crater Lake) are found in Greenland. For hundreds of years, rainwater filled the depression, gradually turning it into a huge lake. Magnificent pine trees grow around its blue waters, and Pemiss Castle rises, creating a fabulous and mysterious atmosphere.

Yellowstone and dormant supervolcano. Geologists say that the territory that now makes up the Yellowstone Reserve - one of the most impressive natural places - is a dangerous place. In this area, where a huge number of various species of flora and fauna are concentrated, where jets of hot water shoot up to the very sky, a huge volcano sleeps, regularly erupting. The last activity took place 2 million years ago. When next time such a catastrophe will befall our ball, scientists can only guess.

Mediterranean and prehistoric flood. Beaches, resorts, warm climate, rich countries, and a variety of seafood - all this is associated with the Mediterranean territories. All the peoples and cultures adjacent to it fought for power over the Mediterranean. However, even 5.5 million years ago there were no turquoise waters and luxurious beaches on the site. In place of the current aquatic environment, there was once a desert, which was sometimes filled with the waters of the Atlantic. During the glaciation, the flow of water through a shallow strait practically stopped. Only 5-6 million years, a stormy stream filled the wasteland, covering the mountain ranges, forming modern islands, so loved by tourists today. They say that the water arrived very quickly - up to 10 meters a day. A truly prehistoric flood.

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In this paper, we will determine how natural disasters affect the climate of planet Earth, therefore, we consider it necessary to define this phenomenon and its main manifestations (types):

The term natural disasters is used for two different concepts, in a sense overlapping. Catastrophe in literal translation means a turn, a restructuring. This value corresponds to the most general idea of ​​catastrophes in natural science, where the evolution of the Earth is seen as a series of different catastrophes that cause a change in geological processes and types of living organisms.

Interest in the catastrophic events of the past is fueled by the fact that an inevitable part of any forecast is the analysis of the past. The older the catastrophe, the more difficult it is to recognize its traces.

Lack of information always breeds fantasies. Some researchers explain the same steep milestones and turns in the history of the Earth by cosmic causes - meteorite falls, changes in solar activity, seasons of the galactic year, others - by the cyclical processes taking place in the bowels of the planet

The second concept - natural disasters refers only to extreme natural phenomena and processes, as a result of which people die. In this understanding, natural disasters are opposed to man-made disasters, i.e. those caused directly by human activity

The main types of natural disasters

Earthquakes are underground shocks and vibrations of the Earth's surface caused by natural causes (mainly tectonic processes). In some places on the Earth, earthquakes occur frequently and sometimes reach great strength, breaking the integrity of the soil, destroying buildings and causing loss of life.

The number of earthquakes recorded annually on the globe is in the hundreds of thousands. However, the vast majority of them are weak, and only a small proportion reaches the degree of catastrophe. Until the 20th century known, for example, are such catastrophic earthquakes as the Lisbon earthquake in 1755, the Vernensky earthquake in 1887, which destroyed the city of Verny (now Alma-Ata), the earthquake in Greece in 1870-73, etc.

By its intensity, i.e. according to the manifestation on the surface of the Earth, earthquakes are divided, according to the international seismic scale MSK-64, into 12 gradations - points.

The area of ​​occurrence of an underground impact - the focus of an earthquake - is a certain volume in the thickness of the Earth, within which the process of releasing energy accumulated for a long time takes place. In a geological sense, a focus is a gap or a group of gaps along which an almost instantaneous movement of masses occurs. In the center of the focus, a point is conventionally distinguished, called the hypocenter. The projection of the hypocenter onto the Earth's surface is called the epicenter. Around it is the region of the greatest destruction - the pleistoseist region. Lines connecting points with the same vibration intensity (in points) are called isoseists.

Flooding - significant flooding of the area with water as a result of a rise in the water level in a river, lake or sea, caused by various reasons. Flooding on the river occurs from a sharp increase in the amount of water due to the melting of snow or glaciers located in its basin, as well as as a result of heavy precipitation. Flooding is often caused by an increase in the water level in the river due to blockage of the channel by ice during ice drift (jam) or due to clogging of the channel under the immovable ice cover by accumulations of intra-water ice and the formation of an ice plug (jam). Floods often occur under the influence of winds that bring water from the sea and cause an increase in the level due to the delay at the mouth of the water brought by the river. Floods of this type were observed in Leningrad (1824, 1924), the Netherlands (1952).

On sea coasts and islands, floods can occur as a result of flooding of the coastal strip by a wave formed during earthquakes or volcanic eruptions in the ocean (tsunami). Similar floods are not uncommon on the shores of Japan and other Pacific islands. Floods can be caused by breaks of dams, protective dams. Flooding occurs on many rivers in Western Europe - the Danube, Seine, Rhone, Po, etc., as well as on the Yangtze and Yellow Rivers in China, Mississippi and Ohio in the USA. In the USSR, large N. were observed on the river. Dnieper and Volga.

Hurricane (French ouragan, from Spanish huracan; the word is borrowed from the language of the Caribbean Indians) is a wind of destructive force and considerable duration, the speed of which is over 30 m / s (according to the Beaufort scale 12 points). Tropical cyclones, especially in the Caribbean, are also called hurricanes.

Tsunami (Japanese) - marine gravity waves of very large length, resulting from the upward or downward displacement of extended sections of the bottom during strong underwater and coastal earthquakes and, occasionally, due to volcanic eruptions and other tectonic processes. Due to the low compressibility of water and the speed of the process of deformation of the bottom sections, the water column resting on them also shifts without having time to spread, as a result of which a certain elevation or depression forms on the ocean surface. The resulting perturbation turns into oscillatory movements of the water column - tsunami waves propagating at high speed (from 50 to 1000 km / h). The distance between neighboring wave crests varies from 5 to 1500 km. The height of the waves in the area of ​​their occurrence varies between 0.01-5 m. Near the coast, it can reach 10 m, and in unfavorable relief areas (wedge-shaped bays, river valleys, etc.) - over 50 m.

About 1000 cases of tsunamis are known, of which more than 100 had catastrophic consequences, which caused complete destruction, washing away of structures and soil and vegetation cover. 80% of tsunamis occur on the periphery of the Pacific Ocean, including the western slope of the Kuril-Kamchatka Trench. Based on the patterns of occurrence and spread of tsunamis, the zoning of the coast is carried out according to the degree of threat. Measures for partial protection against tsunamis: creation of artificial coastal structures (breakwaters, breakwaters and embankments), planting forest strips along the ocean coast.

Drought is a prolonged and significant lack of precipitation, more often at elevated temperatures and low air humidity, as a result of which moisture reserves in the soil dry out, which leads to a decrease or death of the crop. The beginning of a drought is usually associated with the establishment of an anticyclone. The abundance of solar heat and dry air create increased evaporation (atmospheric drought), and soil moisture reserves are depleted without replenishment by rains (soil drought). During drought, the flow of water into plants through the root systems is hindered, the consumption of moisture for transpiration begins to exceed its inflow from the soil, the water saturation of tissues decreases, and the normal conditions for photosynthesis and carbon nutrition are violated. Depending on the season, there are spring, summer and autumn droughts. Spring droughts are especially dangerous for early crops; summer causes severe damage to both early and late grain and other annual crops, as well as fruit plants; autumn are dangerous for winter seedlings. The most destructive are spring-summer and summer-autumn droughts. Most often, droughts are observed in the steppe zone, less often in the forest-steppe zone: 2-3 times a century, droughts occur even in the forest zone. The concept of drought is inapplicable to areas with a rainless summer and extremely low rainfall, where agriculture is possible only with artificial irrigation (for example, the Sahara, Gobi deserts, etc.).

To combat droughts, a complex of agrotechnical and reclamation measures is used to enhance the water-absorbing and water-retaining properties of the soil, to retain snow in the fields. Of the agrotechnical control measures, the main deep plowing is the most effective, especially soils with a highly compacted subsurface horizon (chestnut, solonetz, etc.)

Landslides - sliding displacement of rock masses down the slope under the influence of gravity. Landslides occur in any part of a slope or slope due to an imbalance in rocks caused by: an increase in the steepness of the slope as a result of water washing; weakening of the strength of rocks during weathering or waterlogging by precipitation and groundwater; the impact of seismic shocks; construction and economic activities carried out without taking into account the geological conditions of the area (destruction of slopes by road cuts, excessive watering of gardens and vegetable gardens located on slopes, etc.). Most often, landslides occur on slopes composed of alternating water-resistant (clay) and water-bearing rocks (for example, sand and gravel, fractured limestone). The development of a landslide is facilitated by such an occurrence when the layers are located with an inclination towards the slope or are crossed by cracks in the same direction. In highly moistened clay rocks, landslides take the form of a stream. In plan, landslides often have the shape of a semicircle, forming a depression in the slope, called a landslide cirque. Landslides cause great damage to agricultural land, industrial enterprises, settlements, etc. To combat landslides, bank protection and drainage structures are used, slopes are fixed with piles driven in, vegetation is planted, etc.

Volcanic eruptions. Volcanoes are geological formations that arise above channels and cracks in the earth's crust, through which lava, hot gases and rock fragments erupt to the earth's surface from deep magmatic sources. Volcanoes usually represent individual mountains composed of eruptions. Volcanoes are divided into active, dormant and extinct. The former include: those that are currently erupting constantly or periodically; about the eruptions of which there are historical data; about the eruptions of which there is no information, but which emit hot gases and water (solfatar stage). Dormant volcanoes are those whose eruptions are not known, but they have retained their shape and local earthquakes occur under them. Extinct volcanoes are called heavily destroyed and eroded volcanoes without any manifestations of volcanic activity.

Eruptions are long-term (for several years, decades and centuries) and short-term (measured by hours). Eruption precursors include volcanic earthquakes, acoustic phenomena, changes in the magnetic properties and composition of fumarole gases, and other phenomena. An eruption usually begins with an increase in gas emissions, first along with dark, cold lava fragments, and then with red-hot ones. These emissions are in some cases accompanied by an outpouring of lava. The height of the rise of gases, water vapor, saturated with ash and lava fragments, depending on the strength of the explosions, ranges from 1 to 5 km (during the Bezymyanny eruption in Kamchatka in 1956, it reached 45 km). The ejected material is transported over distances from several to tens of thousands of kilometers. The volume of ejected clastic material sometimes reaches several km3. The eruption is an alternation of weak and strong explosions and lava outpourings. Explosions of maximum force are called climactic paroxysms. After them, there is a decrease in the strength of explosions and a gradual cessation of eruptions. The volumes of the erupted lava are up to tens of km3.

climate natural disaster atmosphere

Today, the attention of the whole world is drawn to Chile, where a large-scale eruption of the Calbuco volcano began. The time has come to remember 7 biggest natural disasters recent years to know what the future may hold. Nature steps on people, as people used to step on nature.

Calbuco volcano eruption. Chile

Mount Calbuco in Chile is a fairly active volcano. However, its last eruption took place more than forty years ago - in 1972, and even then it lasted only one hour. But on April 22, 2015, everything changed for the worse. Calbuco literally exploded, starting the ejection of volcanic ash to a height of several kilometers.

On the Internet you can find a huge number of videos about this amazingly beautiful sight. However, it is pleasant to enjoy the view only through a computer, being thousands of kilometers from the scene. In reality, being near Calbuco is scary and deadly.

The Chilean government decided to resettle all people within a radius of 20 kilometers from the volcano. And this is only the first step. It is not yet known how long the eruption will last and what real damage it will bring. But it will definitely be a sum of several billion dollars.

Earthquake in Haiti

On January 12, 2010, Haiti suffered a catastrophe of unprecedented proportions. There were several tremors, the main of which had a magnitude of 7. As a result, almost the entire country was in ruins. Even the presidential palace, one of the most majestic and capital buildings in Haiti, was destroyed.

According to official figures, more than 222,000 people died during and after the earthquake, and 311,000 were injured to varying degrees. At the same time, millions of Haitians were left homeless.

This is not to say that magnitude 7 is something unprecedented in the history of seismic observations. The scale of destruction turned out to be so huge due to the high deterioration of the infrastructure in Haiti, and also because of the extremely low quality of absolutely all buildings. In addition, the local population itself was in no hurry to provide first aid to the victims, as well as to participate in the removal of rubble and the restoration of the country.

As a result, an international military contingent was sent to Haiti, which took over the government in the first time after the earthquake, when the traditional authorities were paralyzed and extremely corrupt.

Tsunami in the Pacific Ocean

Until December 26, 2004, the vast majority of the inhabitants of the Earth knew about the tsunami exclusively from textbooks and disaster films. However, that day will forever remain in the memory of Mankind because of the huge wave that covered the coast of dozens of states in the Indian Ocean.

It all started with a major earthquake with a magnitude of 9.1-9.3 that occurred just north of the island of Sumatra. It caused a giant wave up to 15 meters high, which spread in all directions of the ocean and hundreds of settlements from the face of the Earth, as well as world-famous seaside resorts.

The tsunami covered coastal areas in Indonesia, India, Sri Lanka, Australia, Myanmar, South Africa, Madagascar, Kenya, Maldives, Seychelles, Oman and other states on the Indian Ocean. Statisticians counted more than 300 thousand dead in this disaster. At the same time, the bodies of many could not be found - the wave carried them into the open ocean.

The consequences of this disaster are enormous. In many places infrastructure was never fully restored after the 2004 tsunami.

Eyjafjallajökull volcano eruption

The hard-to-pronounce Icelandic name Eyjafjallajokull became one of the most popular words in 2010. And all thanks to the volcanic eruption in the mountain range with this name.

Paradoxically, not a single person died during this eruption. But this natural disaster seriously disrupted business life throughout the world, primarily in Europe. After all, a huge amount of volcanic ash thrown into the sky from the Eyjafjallajökull vent completely paralyzed air traffic in the Old World. The natural disaster destabilized the lives of millions of people in Europe itself, as well as in North America.

Thousands of flights, both passenger and cargo, were cancelled. The daily losses of airlines during that period amounted to more than $200 million.

Earthquake in China's Sichuan province

As in the case of the earthquake in Haiti, a huge number of victims after a similar disaster in the Chinese province of Sichuan, which occurred there on May 12, 2008, is due to the low level of capital buildings.

As a result of the main quake of magnitude 8, as well as smaller concussions that followed it, more than 69 thousand people died in Sichuan, 18 thousand were missing, and 288 thousand were injured.

At the same time, the government of the People's Republic of China severely limited international assistance in the disaster zone, it tried to solve the problem with its own hands. According to experts, the Chinese thus wanted to hide the real extent of what happened.

For publishing real data about the dead and destruction, as well as for articles about corruption, which led to such huge numbers of losses, the PRC authorities even imprisoned the most famous contemporary Chinese artist, Ai Weiwei, for several months.

Hurricane Katrina

However, the scale of the consequences of a natural disaster does not always directly depend on the quality of construction in a particular region, as well as on the presence or absence of corruption there. An example of this is Hurricane Katrina, which hit the Southeast coast of the United States in the Gulf of Mexico in late August 2005.

The main impact of Hurricane Katrina fell on the city of New Orleans and the state of Louisiana. The rising water level in several places broke through the dam protecting New Orleans, and about 80 percent of the city was under water. At that moment, entire areas were destroyed, infrastructure facilities, transport interchanges and communications were destroyed.

The population who refused or did not have time to evacuate fled on the roofs of houses. The famous Superdom stadium became the main gathering place for people. But it turned into a trap at the same time, because it was already impossible to get out of it.

During the hurricane, 1,836 people died and more than a million were made homeless. The damage from this natural disaster is estimated at 125 billion dollars. At the same time, New Orleans has not been able to return to a full-fledged normal life in ten years - the city's population is still about a third less than in 2005.

March 11, 2011 in the Pacific Ocean east of the island of Honshu, shocks with a magnitude of 9-9.1 occurred, which led to the appearance of a huge tsunami wave up to 7 meters high. She hit Japan, washing away many coastal objects and going deep into the tens of kilometers.

In different parts of Japan, after the earthquake and tsunami, fires broke out, infrastructure, including industrial ones, was destroyed. In total, almost 16 thousand people died as a result of this disaster, and economic losses amounted to about 309 billion dollars.

But this turned out to be not the worst. The world knows about the 2011 disaster in Japan, primarily because of the accident at the Fukushima nuclear power plant, which occurred as a result of the collapse of a tsunami wave on it.

More than four years have passed since this accident, but the operation at the nuclear power plant is still ongoing. And the settlements closest to it were permanently settled. So Japan got its own.

A large-scale natural disaster is one of the options for the death of our Civilization. We have collected .