Alpine Himalayan belt on the map. Seismic belts of the earth Formation of the Alpine Himalayan fold belt

A year ago, on April 25, 2015, a resonant earthquake of magnitude 7.8 occurred in Nepal.

In April 2016, the main seismic events took place in the Pacific Ring of Fire in the Philippines, near Kamchatka, in Japan, near Vanuatu— April 13, 2016 , off Guatemala, in Japan, April 15, 2016, in Ecuador on April 16, 2016.

But, - April 13, 2016- there was an earthquake magnitude 6.9 — in Myanmar . This is the zone of the Alpine-Himalayan seismic belt. Forecast.

On Earth, from April to July 2016, a period of seismic turbulence begins. In seismically active regions, there are two resonant earthquakes per day, a huge number of aftershocks, subsequent shocks. The number of resonant earthquakes in a short period of time is increasing.

As stated in the earthquake forecast for April 2016:

In March 2016, under the influence of cosmic resonance factors, a large seismic energy accumulated in the Earth's geosphere. AT April – May – June 2016 the accumulated seismic energy will be released in the form of resonant earthquakes and volcanic eruptions.

Trigger of Himalayan tectonics 2015. Alpine-Himalayan seismic belt.

The period of seismic calm in Southeast Asia is coming to an end, and the catastrophic earthquake that occurred in Nepal on April 25, 2015 could be the trigger for even more destructive tremors in the Himalayas, geologists say in Science News.

Experts believe that the Nepalese earthquake of magnitude 7.9 is long overdue. The section of the fault at which the epicenter of the shocks fell has been seismically stable since 1344. The source of the tremors was at a depth of 15 km, where the Indian Plate is moving under Southern Tibet at a rate of about 20 mm per year. Squeezing the plates leads to an increase in pressure, as a result, the rocks of the earth's crust do not withstand and crack.

Alpine-Himalayan seismic belt.

The tectonic plates located under the territory of Nepal have been approaching the fault point for several centuries. The shocks were too weak to release all the accumulated pressure, they only "blew off steam." Now we should expect powerful earthquakes, however, scientists do not know the exact dates.

Source

Activity in the Alpine-Himalayan seismic belt at the end of April 2016.

This seismic activity in the region determines the high probability of a resonant earthquake with a magnitude of more than 7.0 - in late April, early May 2016.

Resonant dates of seismic activity at the end of April 2016.

Since March 2016, a seismic resonance has been operating - a factor in the emerging Jupiter-Saturn quadrature.

Cosmological correspondence - resonant earthquakes with a magnitude of more than 7.0, resonant tsunamis, resonant eruption of active volcanoes.

The period of validity of the exact and wide quadrature Jupiter - Saturn - March - July 2016.

Mars reversal near Saturn - April 17, 2016 - seismic resonance - factor.

Mars in a turn in reverse motion from April 15 to 20, 2016 on the Aldebaran-Antares catastrophe axis - seismic resonance - a factor.

Pluto reversal - April 18, 2016 - seismic resonance - factor.

Conjunction Moon, Jupiter in square to the conjunction Mars, Saturn - April 18, 2016 - seismic resonance - factor.

Tau-square Moon - Pluto - Venus, Uranus - April 20, 2016 - seismic resonance - factor.

Conjunction Mars, Moon, Saturn in square to Jupiter, in square to Neptune - April 25, 2016 - seismic resonance - factor.

Mercury reversal in reverse motion - April 28, 2016 - seismic resonance - a factor.

Ingression, the transition of Venus into the sign of Taurus - April 30, 2016 - seismic resonance - a factor.

Jupiter reversal into direct motion in square to Saturn - May 9, 2016 - seismic resonance - factor + - 14 days.

Studies of the connections of seismic activity, volcanic activity, intense manifestation of the Elements with Cosmic factors, gravitational fields of planets, activity of the Sun, torsion fields and rays of the Near and Far Space - Fixed Stars, Nebulae - Galaxies - are conducted in the method "Cosmology - Astrology as a security system". The software is the ZET GEO astroprocessor.

Andrey Andreev - cosmo-rhythmologist.

Forecast of earthquakes, seismic activity for 2016. Regions of seismic activity 2016.

Earthquake forecast for April 2016.

Earth crystal lattice.

On Earth, there are special zones of increased seismic activity, where earthquakes constantly occur. Why is this happening? Why do earthquakes occur more often in mountainous areas and very rarely in deserts? Why are earthquakes constantly occurring in the Pacific Ocean, giving rise to tsunamis of varying degrees of danger, but we have heard almost nothing about earthquakes in the Arctic Ocean. It's all about the seismic belts of the earth.

Introduction

The seismic belts of the earth are the places where the lithospheric plates of the planet come into contact with each other. In these zones, where the seismic belts of the Earth are formed, there is an increased mobility of the earth's crust, volcanic activity, due to the process of mountain building, which lasts for millennia.

The length of these belts is incredibly large - the belts stretch for thousands of kilometers.

There are two large seismic belts on the planet: the Mediterranean-Trans-Asian and the Pacific.

Rice. 1. Seismic belts of the Earth.

Mediterranean-Trans-Asian the belt originates off the coast of the Persian Gulf and ends in the middle of the Atlantic Ocean. This belt is also called the latitudinal belt, as it stretches parallel to the equator.

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pacific belt- meridional, it stretches perpendicular to the Mediterranean-Trans-Asian belt. It is on the line of this belt that a huge number of active volcanoes are located, most of the eruptions of which occur under the water column of the Pacific Ocean itself.

If you draw the seismic belts of the Earth on a contour map, you will get an interesting and mysterious drawing. The belts seem to border the ancient platforms of the Earth, and sometimes they are embedded in them. They are associated with giant faults in the earth's crust, both ancient and younger.

Mediterranean-Trans-Asian seismic belt

The latitudinal seismic belt of the Earth passes through the Mediterranean Sea and all the European mountain ranges adjacent to it, located in the south of the continent. It stretches through the mountains of Asia Minor and North Africa, reaches the mountain ranges of the Caucasus and Iran, runs through all of Central Asia and the Hindu Kush right to Koel-Lun and the Himalayas.

In this belt, the most active seismic zones are the Carpathian Mountains located on the territory of Romania, all of Iran and Balochistan. From Balochistan, the earthquake zone extends to Burma.

Fig.2. Mediterranean-Trans-Asian seismic belt

This belt has active seismic zones, which are located not only on land, but also in the waters of two oceans: the Atlantic and Indian. Partially, this belt captures the Arctic Ocean. The seismic zone of the entire Atlantic passes through the Greenland Sea and Spain.

The most active seismic zone of the latitudinal belt falls on the bottom of the Indian Ocean, passes through the Arabian Peninsula and stretches to the very south and southwest of Antarctica.

pacific belt

But, no matter how dangerous the latitudinal seismic belt is, nevertheless, most of all earthquakes (about 80%) that occur on our planet occur in the Pacific belt of seismic activity. This belt runs along the bottom of the Pacific Ocean, along all the mountain ranges that encircle this largest ocean on Earth, captures the islands located in it, including Indonesia.

Fig.3. Pacific seismic belt.

The largest part of this belt is the Eastern. It originates in Kamchatka, stretches through the Aleutian Islands and the western coastal zones of North and South America straight to the South Antilles loop.

The eastern branch is unpredictable and poorly understood. It is full of sharp and twisty turns.

The northern part of the belt is the most seismically active, which is constantly felt by the inhabitants of California, as well as Central and South America.

The western part of the meridional belt originates in Kamchatka, stretches to Japan and beyond.

Secondary seismic belts

It is no secret that during earthquakes, waves from vibrations of the earth's crust can reach remote areas that are considered safe in relation to seismic activity. In some places, the echoes of earthquakes are not felt at all, and in some they reach several points on the Richter scale.

Fig.4. Earth seismic activity map.

Basically, these zones, sensitive to fluctuations of the earth's crust, are located under the water column of the oceans. The secondary seismic belts of the planet are located in the waters of the Atlantic, Pacific Ocean, Indian Ocean and in the Arctic. Most of the secondary belts fall on the eastern part of the planet, so these belts stretch from the Philippines, gradually descending to Antarctica. Echoes of shocks can still be felt in the Pacific Ocean, but in the Atlantic it is almost always a seismically calm zone.

What have we learned?

So, on Earth, earthquakes do not occur in random places. It is possible to predict the seismic activity of the earth's crust, since the main part of earthquakes occurs in special zones, which are called the seismic belts of the earth. There are only two of them on our planet: the latitudinal Mediterranean-Trans-Asian seismic belt, which stretches parallel to the Equator, and the meridional Pacific seismic belt, located perpendicular to the latitudinal one.

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The ALPINE-HIMALAYAN MOBILE BELT covers the territories of Southern Europe, North Africa, South and Southeast Asia - from the Strait of Gibraltar to Indonesia; stretches in the sublatitudinal direction for a distance of about 17 thousand km.

It is subdivided into four branches of cover-folded mountain structures. 1st - Pyrenees - Alps - Carpathians - Balkanides - Pontides - Lesser Caucasus - Elburs - Turkmen-Khorasan mountains. 2nd - Northern Dobruja Mountainous Crimea - Greater Caucasus - Kopetdag. 3rd - Apennines - Calabrids (south of the Apennine Peninsula) - structures of Northern Sicily - Tell Atlas - Er Reef Andalusian mountains (Cordillera Betica) - structures of the Balearic Islands of the Western Mediterranean. 4th - Dinarids of the Hellenids - structures of the south of the Aegean Sea - Cretan arc - Taurida of Turkey - Zagros - Makran - Balochistan mountains - Himalayas - Indo-Burman orogen - Sunda-Banda arc of Indonesia. The belt began to develop during the breakup of the Pangea supercontinent in the 2nd half of the Permian, when, as a result of continental rifting and subsequent spreading in the Triassic-Jurassic, the Mesotethys ocean (see Tethys article) arose, partially inheriting the Paleozoic Paleotethys, but located south of the latter. The collision of the continents in the area of ​​Mesotethys began in the Late Jurassic. In the Late Cretaceous, a new ocean opened to the south - Neotethys, which had many branches, bays and marginal seas. It is believed that the Alpine-Himalayan mobile belt mainly arose during the closure of this ocean. Relic basins of the Meso- and Neo-Tethys have been preserved in the Mediterranean Sea.

The closure of Neotethys began in the Paleocene and was caused by the collision of island arcs and the collision of continents and microcontinents with Eurasia. The main phase of deformations is the Late Eocene. Continental collision was accompanied by the formation of numerous covers, including ophiolite ones. The introduction of the Hindustan block into Eurasia from the south led to the formation in the eastern segment of the belt of the highest mountain ranges (Hindukush, Pamir, Himalayas). The amount of penetration is about 2 thousand km. The belt continues to develop actively (seismicity, volcanism). The modern convergence (rapprochement) of the Afro-Arabian and Eurasian plates is realized in active subduction zones (subduction of one lithospheric plate under another) of the Eastern Mediterranean (Calabrian, Aegean and Cyprus) and in the south of the Arabian Sea. In the Burma–Sonda system in the southeast of the belt, the subduction of the Indian Ocean crust under the Sunda–Banda island arc continues, in the extreme south of which, in the region of Timor Island, the collision of the Australian continent with the Eurasian continent began in the middle Pliocene.

Lit .: Hain V. E. Regional geotectonics: Alpine Mediterranean belt. M., 1984; he is. Tectonics of continents and oceans (year 2000). M., 2001.

A. F. Limonov.

The altitudinal zonality of the territory of the Russian Federation is diverse and is closely related to latitudinal zones. With height, the soil-vegetation cover, climate, geomorphological and hydrological processes are transformed.

A change in the components of nature provokes a change in natural complexes, in the process of which altitudinal belts are formed.

The change of territorial natural complexes depending on the height is called altitudinal zonality or vertical zonality.

Factors affecting the formation of altitudinal zonality

The process of formation of different types of altitudinal zonality is influenced by the following factors:

1. The geographical location of the mountain system. The altitudinal position and number of mountain belts in a particular mountain system depends on the latitude of the territory in which they are located, as well as its position in relation to the nearest oceans and seas.

What mountains form the basis of the Alpine-Himalayan belt?

The height of the mountain belts of Russia increases in the direction from north to south.

A striking example of this theory is the high mountain system of the Urals, which is located in the northern part of the state.

The maximum height of the Ural Mountains becomes 1100 m, while for the Caucasus Mountains this figure serves as an average height indicator. Each mountain system has a different number of altitudinal belts.

2. Relief.

The distribution of snow cover, the preservation of weathering products, and the level of moisture determine the relief of mountain systems. It is the relief structure of the mountains that influences the formation of natural complexes, in particular, the vegetation cover.

3. Climate. Climatic conditions are the most important factor due to which the formation of zones of altitudinal zonality occurs. With an increase in altitude relative to sea level, there are significant changes in the level of solar radiation, temperature, strength and direction of the wind, and the general type of weather.

The climate affects the flora and fauna of mountain systems, eventually creating a certain authentic natural complex.

4. Slopes exposure. The exposition of mountain slopes plays a significant role in the distribution of moisture, heat, and weathering processes. In the northern parts of the mountain systems, the slopes are much lower than in the southern parts.

The history of the formation of altitudinal zonality in Russia

The formation of altitudinal zonality in the modern territory of the Russian Federation originates in the early Pleistocene, during the interglacial period (Valdai and Moscow icing).

Due to repeated climatic transformations, the boundaries of altitudinal zonation have shifted several times. Scientists have proven that all modern mountain systems in Russia were originally located approximately 6 ° above their current position.

The altitudinal zonality of Russia led to the formation of mountain complexes - the Urals and the mountains of the south and east of the state (the Caucasus, Altai, the Baikal mountain ranges, the Sayans).

The Ural Mountains have the status of the most ancient mountain system in the world, their formation began presumably in the Archean period. The mountain systems of the south are much younger, but due to the fact that they are closer to the equator, they significantly predominate in terms of height.

The lecture was added on 07.11.2012 at 02:47:11

Mediterranean (Alpine-Himalayan) folded (geosinklinal) belt- a folded belt that crosses Northwest Africa and Eurasia in a latitudinal direction from the Atlantic Ocean to the South China Sea, separating the southern group of ancient platforms, which until the middle of the Jurassic period constituted the Gondwana supercontinent, from the northern group, which previously constituted the Laurasia continent and the Siberian platform.

Mediterranean fold belt

In the east, the Mediterranean fold belt articulates with the western branch of the Pacific geosynclinal belt.

The Mediterranean belt covers the southern regions of Europe and the Mediterranean, the Maghreb (North-West Africa), Asia Minor, the Caucasus, the Persian mountain systems, the Pamirs, the Himalayas, Tibet, Indochina and the Indonesian islands.

In the middle and central parts of Asia, it is almost united with the Ural-Mongolian geosynclinal system, and in the west it is close to the North Atlantic system.

The belt was formed over a long period of time, covering the period from the Precambrian to the present day.

The Mediterranean geosynclinal belt includes 2 folded areas (mesozoids and alps), which are divided into systems:

Cm.

Notes

1. Zeisler V.M., Karaulov V.B., Uspenskaya E.A., Chernova E.S. Fundamentals of regional geology of the USSR. - M: Nedra, 1984. - 358 p.

Links

Fold belts on the world map

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The Alpine-Himalayan mountain belt begins in the southwest of Europe and stretches in a narrow strip to the east. It includes the Pyrenees, the Alps, the Carpathians, the Caucasus, the Apennines, the Balkans, as well as the plains in the internal depressions.
The continuation of the Alpine-Himalayan belt in Asia is the Asia Minor Highlands. In the north, the Pontic Range stretches in a long chain, in the south - the Taurus Mountains.

The Armenian volcanic highlands (5156 m) are located to the east of the Anatolian plateau. Here you can see volcanic plateaus, volcano cones, sinkholes and other forms of volcanic relief. In general, the Armenian Highland is a huge vault, raised and split into separate parts. The largest area of ​​the vast Iranian Highlands (5604 m) is occupied by the Elburz Range, the Zagros Mountains and the vast plains between them. This is an active seismic zone, where earthquakes of magnitude up to 10 occur.

The mountainous countries of the Hindu Kush, the Pamirs, the Himalayas and the Tibetan Plateau are the highest on our planet. The main feature of the relief is a very deep dissection.

The thickness of the earth's crust on the border of the Himalayas and Tibet reaches 70 km, which is about 30 km more than in adjacent territories.

The Himalayas include a vast territory about 2500 km long and up to 350 km wide. Everest reaches 8848 m. The highest part of the Himalayas is composed of crystalline schists, and Everest is composed of Permian limestones.
One of the most spectacular mountain nodes on the surface of the Earth is the Pamirs. The mountain ranges of Karakoram, Kunlun, Hindu Kush converge in it. Here the highest mountains and high plateaus coexist.

Mountain ranges with sharp jagged ridges separate giant valleys 2-3 km deep.

ALPINE-HIMALAYAN MOBILE BELT

Huge glaciers and glacial lakes lie in their upper reaches. Scientists believe that these signs point to the rapid uplift of mountains (I -2 cm per year) that continues to this day. This is also reminded by frequent earthquakes, leading to large landslides and destruction of slopes. Geologists suggest that the Pamir mountain junction was created by the collision of lithospheric plates.

In the southeast, the Alpine-Himalayan belt ends with the Burmese Highlands (4149 m), composed of granites, schists, limestones and sandstones.

The submeridional ridges are separated here by longitudinal depressions. Axial zones are composed of Mesozoic granites and shales. It looks like the Shan Highlands.

Thus, the entire Alpine-Himalayan belt is characterized by dynamism and contrast of tectonic movements (in the Alps, the range of movements was 10-12 km; in the Carpathians - 6-7 km; in the Himalayas - 10-12 km).

Although volcanism did not develop in all the mountainous countries of this belt, the seismic intensity is quite high. Zones of "seismic silence" alternate with zones of frequent earthquakes with a magnitude of up to 10 points.

In this article, we will tell you about the Alpine-Himalayan seismic belt, because the whole history of the formation of the landscape of the planet Earth is connected with theory and the seismic and volcanic manifestations accompanying this movement, as a result of which the current crustal relief was formed ... Relief-forming movements of tectonic plates are accompanied by disturbances of a continuous field the earth's crust, which lead to the formation of tectonic faults and vertical mountain ranges in it. Such discontinuous processes occurring in the earth's crust are called faults and overthrusts, respectively leading to the formation of horsts and grabens. The movement of tectonic plates ultimately leads to intense seismic manifestations and volcanic eruptions. There are three types of plate movement:
1. Rigid mobile tectonic plates move on top of each other, forming mountain ranges, both in the oceans and on land.
2. Contiguous tectonic plates sink into the mantle, forming tectonic trenches in the earth's crust.
3. Moving tectonic plates slide between each other, forming transform faults.
The belts of maximum seismic activity of the planet approximately coincide with the line of contact of moving tectonic plates. There are two main belts:
1. Alpine–Himalayan seismic belt
2. Pacific seismic belt.

Below we will dwell on the Alpine-Himalayan seismic belt, which stretches as a strip from the mountain structures of Spain to the Pamirs, including the mountains of France, the mountain structures of the center and south of Europe, its southeast and further - the Carpathians, the Caucasus and Pamir mountains, as well as mountain manifestations Iran, northern India, Turkey and Burma. In this zone of active manifestation of tectonic processes, most catastrophic earthquakes occur, bringing countless disasters to countries falling into the zone of the Alpine-Himalayan seismic belt. These are catastrophic destruction in settlements, numerous casualties, violations of transport infrastructure, and so on ... So in China, in 1566, there was a powerful earthquake in the provinces of Gansu and Shaanxi. During this earthquake, more than 800 thousand people died, and many cities were wiped off the face of the earth. Calcutta in India, 1737 - about 400 thousand people died. 1948 - Ashgabat (Turkmenistan, USSR). The dead - more than 100 thousand. 1988, Armenia (USSR), the cities of Spitak and Leninakan were destroyed to the ground. 25 thousand people died. You can list other fairly powerful earthquakes in Turkey, Iran, Romania, accompanied by great destruction and loss of life. Almost daily seismic monitoring services register weaker earthquakes throughout the Alpine-Himalayan seismic belt. They testify that tectonic processes in these areas do not stop for a minute, the movement of tectonic plates also does not stop, and after another powerful earthquake and another release of the earth's crust, it again grows to a critical point, at which, sooner or later - inevitably there will be another discharge of the tense earth's crust, causing an earthquake.
Unfortunately, modern science cannot accurately determine the place and time of the next earthquake. In active seismic belts of the earth's crust, they are inevitable, since the process of movement of tectonic plates is continuous, and hence the continuous increase in tension in the zones of contact between moving platforms. With the development of digital technologies, with the advent of super powerful and ultra-high-speed computer systems, modern seismology will come closer and closer to being able to perform mathematical modeling of tectonic processes in Russia, which will make it possible to determine the points of the next earthquake with the utmost accuracy and reliability. This, in turn, will provide an opportunity for mankind to prepare for such disasters and help to avoid numerous human casualties, and modern and promising building technologies will minimize the devastating consequences of powerful earthquakes. It should be noted that other active seismic belts on the planet coincide quite closely with the belts of volcanic activity. Science has proven that in most cases volcanic activity is directly related to seismic activity. Like earthquakes, increased volcanic activity poses a direct threat to human life. Many volcanoes are located in densely populated areas with developed industry. Any sudden volcanic eruption carries a danger to people living in the area of ​​volcanoes. In addition to the above, earthquakes in the oceans and seas lead to tsunamis, which are no less destructive for coastal zones than the earthquakes themselves. It is for this reason that the task of improving the methods of seismic monitoring of active seismic belts always remains relevant.

Zones with seismic activity, where earthquakes occur most often, are called seismic belts. In such a place, increased mobility of lithospheric plates is observed, which is the reason for the activity of volcanoes. Scientists claim that 95% of earthquakes occur in specific seismic zones.

There are two huge seismic belts on Earth that have spread thousands of kilometers along the bottom of the oceans and land. This is the meridional Pacific and the latitudinal Mediterranean-Trans-Asian.

pacific belt

The Pacific latitudinal belt encircles the Pacific Ocean to Indonesia. More than 80% of all earthquakes on the planet occur in its zone. This belt passes through the Aleutian Islands, covers the western coast of America, both North and South, reaches the Japanese Islands and New Guinea. The Pacific belt has four branches - western, northern, eastern and southern. The latter has not been studied enough. Seismic activity is felt in these places, which subsequently leads to natural disasters.

The eastern part is considered the largest in this belt. It starts in Kamchatka and ends with the South Antilles loop. In the northern part, there is constant seismic activity, which affects the inhabitants of California and other regions of America.

Mediterranean-Trans-Asian Belt

The beginning of this seismic belt is in the Mediterranean Sea. It passes through the mountain ranges of Southern Europe, through North Africa and Asia Minor, reaching the Himalayan mountains. The most active zones in this belt are as follows:

• Romanian Carpathians;
• the territory of Iran;
• Balochistan;
• Hindu Kush.

As for underwater activity, it is recorded in the Indian and Atlantic oceans, reaching the southwest of Antarctica. The Arctic Ocean also falls into the seismic belt.

Scientists gave the name to the Mediterranean-Trans-Asian belt "latitudinal", as it stretches parallel to the equator.

seismic waves

Seismic waves are streams that come from an artificial explosion or an earthquake. Body waves are powerful and move underground, but vibrations are felt on the surface as well. They are very fast and move in gaseous, liquid and solid media. Their activity somewhat resembles sound waves. Among them there are transverse waves or secondary ones, which have a slightly slow motion.

Surface waves are active on the surface of the earth's crust. Their movement resembles the movement of waves on water. They have destructive power, and the vibrations from their action are well felt. Among the surface waves, there are especially destructive ones that are capable of pushing rocks apart.

Thus, there are seismic zones on the surface of the earth. According to the nature of their location, scientists have identified two belts - the Pacific and the Mediterranean-Trans-Asian. In places where they lie, the most seismically active points are identified, where volcanic eruptions and earthquakes very often occur.

Secondary seismic belts

The main seismic belts are the Pacific and the Mediterranean-Trans-Asian. They encircle a significant land area of ​​our planet, have a long stretch. However, one should not forget about such a phenomenon as secondary seismic belts. There are three such zones:

• region of the Arctic;
• in the Atlantic Ocean;
• in the Indian Ocean.

Due to the movement of lithospheric plates in these zones, phenomena such as earthquakes, tsunamis and floods occur. In this regard, nearby territories - continents and islands are prone to natural disasters.

So, if in some regions seismic activity is practically not felt, in others it can reach high rates on the Richter scale. The most sensitive areas are usually underwater. In the course of research, it was found that the eastern part of the planet contains the most minor belts. The beginning of the belt is taken from the Philippines and descend to Antarctica.

Seismic region in the Atlantic Ocean

A seismic zone in the Atlantic Ocean was discovered by scientists in 1950. This area starts from the coast of Greenland, runs close to the Mid-Atlantic submarine ridge, ends in the area of ​​the Tristan da Cunha archipelago. Seismic activity here is explained by the young faults of the Seredinny Ridge, since the movements of lithospheric plates are still ongoing here.

Seismic activity in the Indian Ocean

The seismic strip in the Indian Ocean extends from the Arabian Peninsula to the south, and almost reaches Antarctica. The seismic region here is associated with the Middle Indian Range. Mild earthquakes and volcanic eruptions occur here under water, the centers are not located deep. This is due to several tectonic faults.

Seismic belts are located in close relationship with the relief, which is under water. While one belt is located in the region of East Africa, the second stretches to the Mozambique Channel. Oceanic basins are aseismic.

Seismic zone of the Arctic

Seismicity is observed in the Arctic zone. Earthquakes, eruptions of mud volcanoes, as well as various destructive processes occur here. Specialists observe the main sources of earthquakes in the region. Some people believe that very low seismic activity occurs here, but this is not the case. When planning any activity here, you always need to stay alert and be prepared for various seismic events.

Seismicity in the Arctic Basin is explained by the presence of the Lomonosov Ridge, which is a continuation of the Mid-Atlantic Ridge. In addition, the regions of the Arctic are characterized by earthquakes that occur on the continental slope of Eurasia, sometimes in North America.