Where is the deepest depression in the world, and where is the deepest place on earth?

The Dead Sea is the deepest depression in the world, with an average water surface about 400 meters below sea level.

The Dead Sea is located in West Asia, 80 kilometers long from north to south, 5 16 kilometers wide from east to west, from Suhuaima in the north to Safi in the south, with an area of 1,049 square kilometers, an average water depth of 146 meters, and a maximum depth of 395 meters. On the south-south east coast of the Dead Sea, a piece of land protrudes into the Dead Sea to form a peninsula, dividing the Dead Sea into two parts: the southern part covers an area of 260 square kilometers, with an average water depth of 6 meters and a maximum depth of no more than 8 meters; The northern part covers an area of more than 780 square kilometers, and its central part is 395 meters deep.

The eastern and western shores of the Dead Sea are bare cliffs. The east bank is composed of brightly colored sandstone at an altitude of 750 meters; The west bank is composed of limestone at an altitude of 570 meters. The Dead Sea is sandwiched between two mountains running north-south.

Its surface is 392 meters below the surface of the Mediterranean Sea and its deepest point is 395 meters. The Dead Sea is one of the most salinous natural water bodies in the world, and it is named the "Dead Sea" because it is difficult for aquatic plants and fish to survive in addition to bacteria, and there are very few trees along the water.

The Dead Sea The Dead Sea is "the lowest point in the world, the navel of the earth" The Dead Sea is located in the middle of a north-south rift valley between Jordan and Israel. Strictly speaking, the Dead Sea should be shared by Jordan, Israel and the future Palestine. It is 413 meters below sea level, covers an area of about 1,049 square kilometers, is long from north to south, and is 17 kilometers wide from east to west.

The Lisan Peninsula to the east of the lake divides the lake into two basins of different sizes and depths, with the northern side accounting for three-quarters. It is shallow in the south, with an average depth of less than 3 meters, and deep in the north, with a maximum depth of 330 meters, and the sodium chloride that reaches saturation in deep water precipitates into fossilization. Legend has it that the sinful cities of Sodom and Gomorrah, which God destroyed in the book of Genesis, sank to the bottom of the southern part of the Dead Sea, "no wonder the waters are shallow in the south and deep in the north."

The Dead Sea is the northern continuation of the Great Rift Valley, a sunken crust sandwiched between two parallel geological fault cliffs. The Dead Sea is located in the desert, with very little and irregular rainfall, no freezing in winter, and very hot summers, causing the lake to evaporate about 1,400 mm per year, often fogging the lake. The Jordan River injects 100 million cubic meters of water into the Dead Sea every year, and there are four smaller but perennial rivers that flow from the east, and the level of the Dead Sea varies seasonally, from 30 to 60 centimeters, due to the high evaporation in summer and water in winter.

The Dead Sea has an extremely high salt content, 10 times the salinity of ordinary oceans, and the higher you go to the bottom of the lake, the sodium chloride that reaches saturation in deep water precipitates into fossilization. Because the water is extremely salty, swimmers can easily float up, and there are only bacteria and no other animals and plants in the water, so people call it the Dead Sea. The salt content of seawater is generally 35 parts per thousand, and the salt content of the Dead Sea is about 230 to 250 parts per thousand.

In surface water, there are between 227 and 275 grams of salt per litre, so the Dead Sea is a large reservoir of salt. It is estimated that the total salt content of the Dead Sea is about 13 billion tons. In such water, it is difficult for fish to survive, and there are no flowers and plants on the shore, so people call it the Dead Sea.

But in recent years, scientists have discovered the presence of green algae and bacteria in the sediments at the bottom of the Dead Sea lake.

The Dead Sea forms in the Great Rift Valley region and resembles a huge catchment basin. The temperature in this area is so high that almost all the water (4 billion to 6.5 billion litres per day) that flows from the Jordan River into the Dead Sea has dried up, leaving more salt behind.

The water is deep blue and the water is so calm and salty that it does not sink or make it impossible to swim. Put one arm in the water and the other arm or leg will float. If you want to immerse yourself in water, you should gradually tilt your back until you are lying flat.

Mariana Trench

It is the deepest trench in the world, located at the bottom of the Pacific Ocean near the Mariana Islands in the northeastern part of the Philippines, and is estimated to have been formed 60 million years ago as part of a series of trenches on the western ocean floor of the Pacific Ocean. It is located at latitude 11 ° 20 N, longitude 142 ° E; , between the Asian continent and Australia, from the Iwo Islands in the north to the vicinity of Yap Island in the southwest. It has the Aleutian, Kurile, Japan, and Ogasawara trenches to the north, and the New Britain and New Hebrides trenches to the south.

The total length is 2,550 kilometers, arc-shaped, with an average width of 70 kilometers, and most of the water depth is more than 8,000 meters. The maximum water depth is in the Fichaz Abyss, which is 11,033 meters, which is the deepest point on Earth.

As of 2021, the Mariana Trench, the deepest place in the world.

At its deepest point, 6,11 kilometres, it is the deepest known ocean, and it is one of the harshest areas on Earth due to its high water pressure, complete darkness, low temperatures, low oxygen levels and lack of food resources. The Mariana Trench is a plate subduction zone with very active geological movement on the seafloor.

Causes: It is generally believed that the oceanic plate and the continental plate collide with each other, because the ocean plate has a high density of rocks and a low position, it subducts under the continental plate, and the plate gradually melts and disappears after entering the mantle.

Ocean trenches are formed where collisions occur, and island arcs, back-arc basins, and coastal mountains are often formed on the side close to the mainland. These are areas of intense geological activity, with frequent volcanic eruptions and **.

Where is the deepest place in the world?

The deepest place in the world is on the western side of the Pacific Ocean and is called the Mariana Trench. Its deepest point, the Charinger Abyss, has a maximum depth of 11,034 meters and is located at 11°2L north latitude and 142°12 east longitude. The Mariana Trench is the deepest place on Earth, located east of the Mariana Islands in the western North Pacific Ocean, and is an arc-shaped depression on the ocean floor that extends for 2,550 kilometers and is 69 kilometers wide on average.

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Mariana Trench, more than 20,000 meters deep.

Mariana Trench, also known as:"Mariana Islands Trench", is the deepest known ocean trench on Earth, located on the western North Pacific Ocean bed, near the east of the Mariana Islands, and is a zone of two tectonic convergent subductions.

The deepest depression in the world is the Dead Sea. The Dead Sea is the lowest lake in the world, with meters above sea level and the deepest lake bed meters above sea level. The Dead Sea is located in the Great Rift Valley between Israel, Palestine and Jordan.

The Dead Sea is an inland salt lake with a high concentration of salt, twice that of ordinary seawater, so that there are no central organisms in the water, and even on the land along the shores of the Dead Sea, there are few organisms other than aquatic weeds.

The shores of the Dead Sea are the lowest point on earth that has been exposed to land, and are known as the "navel of the world". From afar, the Dead Sea resembles a two-tailed fish. In the sunlight, the sea looks like an ancient bronze mirror.

After the 1967 Israeli-Arab war, the Israeli army occupied the entire West Bank.

The Dead Sea is 80 km long and 18 km wide, with a surface area of about 1,020 km2, and the average depth of the lake is 300 meters, with a maximum depth of 415 meters. The Lisan Peninsula in the east of the lake divides the lake into two basins of different sizes and depths, with the northern surface accounting for 75% of the area and the depth of 415 meters, and the southern side being less than 3 meters deep on average.

The Dead Sea is located in the desert and has a Mediterranean climate, but rainfall is very small and irregular, and belongs to the desert zone of Western Asia. The annual rainfall on the Lisan Peninsula is 65 mm. The climate is warm in winter and hot in summer.

Most of the lowlands are related to plate tectonics, and depressions are formed when plates gather or disperse, and a few volcanoes also form depressions. So do you know that the lowest depression in the world is **? The lowest depression in the world is the Dead Sea, located on the border between Israel and Jordan, which is the world's most salinous lead-grated lake, with an average elevation of -420 meters.

In addition to being the lowest depression and the lowest lake, the Dead Sea is also the deepest saltwater lake. If you are interested, please take a look.

1. How are depressions formed?

Depressions mainly refer to some enclosed terrain with a relatively low center compared to the surrounding areas. There are two main situations in depressions, one refers to the low-lying part of the land, which is mainly due to poor drainage, and the water is concentrated in the middle, and lakes and swamps are formed at the same time. There is also an inland basin below sea level.

There are also some depressions called wind erosion depressions, which are mainly due to the fact that the wind blows and eventually forms depressions that are not very obvious, but are distributed in groups, which are wind erosion depressions. These depressions are mostly oval in shape, distributed in rows and stretch along the main wind direction, while the depth of these depressions is only 10 meters, and the windward slope is gentle, and the leeward side is steep.

Second, the depression effect.

In fact, the depression effect does not refer to the terrain, but refers to the depression effect in the economy, which is to use the comparative advantage of the bird to search for the situation, to create an ideal economic development, the main way to achieve it is to attract the flow of foreign capital. Similar to depressions, in some areas with relatively backward economic development, they attract investment to fill in.

3. The landscape effect of depressions.

The depression in the karst mountains of southwest China has very special characteristics, because the surrounding environment is closed, the living environment is more fragile, and the local agricultural planting is the mainstay, and the production activities have a very, very important impact on the ecological environment. The main reason for this landscape effect is that the original vegetation blocks the circulation of karst water on the surface, and finally the vegetation system is destroyed, resulting in the damage of the landscape system and weakening the meanness of the landscape.