The largest sea in the world "Coral Sea"

The Coral Sea is one of the largest sea areas in the world. The seawater is dark blue, with high salt content and high transparency. Then do you know why the Coral Sea is called Coral Sea? What is the topography and climate of the largest sea in the world? Let's have a look!

The largest sea in the world "Coral Sea"

Coral Sea covers an area of 4.79 million 1 10,000 square kilometers.

Coral Sea, also known as Solomon Sea, is the largest sea in the world, with an area of 4.79 million 1 1,000 square kilometers, equivalent to half of the land area of China. Coral, as the largest sea in the world, is also the deepest sea in the world, and its scenery is very charming. When you see these photos, you will be surprised at how beautiful they are! Coral Sea is located in the southwest of the Pacific Ocean, with an average depth of 2,243 meters, and the deepest New Hebri Trench is 9 1.75 meters.

The seabed north of 20 south latitude is mainly coral sea submarine plateau, and the coral sea basin is north of the plateau. The South Solomon Trench is 73 16 m (24,002 ft) deep and the New Hebrides Trench is 7540 m (25 134 ft) deep. In addition, there is Tagula Reef in the north, and New Caledonia Reef in the southeast is the only way for the eastern port of Australia to reach East Asia. Subtropical climate with typhoons, especially from June to April. The economic resources of Papua Bay are fishery and oil.

The seawater is quite clean. The salinity and transparency of the seawater in Coral Sea are very high, and the water is dark blue. There are almost no rivers around the Coral Sea, which is one of the reasons for the small water pollution in the Coral Sea. Also, affected by the warm current, the continental shelf water temperature rises, and the Coral Sea is located near the equator. Therefore, its water temperature is also very high. The water temperature is above 20℃ all year round, and even exceeds 28℃ in the hottest month. These are all conducive to the growth of corals. The coral reef is the largest, with a length of 20 12km, located at the northeast coast of Australia 16 ~ 24 1km. Coral reefs provide superior living and habitat conditions for marine animals and plants. The Coral Sea is rich in sharks, as well as herring, turtle, sea cucumber and pearl oyster.

The Great Barrier Reef is the largest coral reef in the world and also located in the Coral Sea. There are coral islands in the world. To the west is Queensland, Australia; To the east are New Caledonia and Vanuatu; The northeast is Solomon Islands; In the north is New Guinea. World-famous for the US-Japan Coral Sea Campaign in World War II.

The Great Barrier Reef and its islands and coral reefs belong to Queensland, and most of the coral reefs and islands east of it are part of the Coral Sea Islands. In addition, some islands in western New Caledonia are also part of the Coral Sea Islands. (fortune telling)

Why is the Coral Sea called Coral Sea?

Coral Sea is famous not only for its large area, but also for its developed coral reef structure. Coral, the "architect" of reef, is a kind of hydra, which is a cylindrical monomer or dendritic group and lives by catching plankton and seaweed. The outer layer of coral can secrete calcareous bones, and its dead remains become reefs.

Coral sea topography

The seabed topography of Coral Sea inclines from west to east, with an average water depth of 2,394 meters, and the water depth in most places is 3,000-4,000 meters, and the water depth is 9 1.74 meters. Therefore, it is also the deepest sea in the world. The seabed north of 20 south latitude is mainly coral sea submarine plateau, and the coral sea basin is north of the plateau. The South Solomon Trench is 73 16 m (24,002 ft) deep and the New Hebrides Trench is 7540 m (25 134 ft) deep. In addition, there is Tagula Reef in the north, and New Caledonia Reef in the southeast is the only way for the eastern port of Australia to reach East Asia. Subtropical climate with typhoons, especially from June to April. The economic resources of Papua Bay are fishery and oil.

Off the coast of Australia and Papua New Guinea, the continental shelf is very narrow. Around Solomon Islands and New hebrides, the coast is steep. The deep-sea basin is surrounded by steep rock walls, and there are large basins, trenches, plateaus, seamounts and troughs on the seabed. Marine basins include: Coral Sea Basin in the north, New Hebrides Basin in the east and Santa Cruz Basin in the northeast corner. The offshore platforms include the Coral Sea Platform in the west and the Belona Sea Platform in the south. Each offshore platform covers an area of over 250,000 square kilometers. There are seamounts and troughs between the basin and the platform. Atolls, terraces and islands are exposed to the sea, for example, Mount Louis Yade between Yade, Louis and New Caledonia, Indis Penseb Rise between Longnell Island in the northeast of New Hebrides and Penseb Reef in Indis, Willis Rise near Willis Reef, Queensland Trough, New Caledonia Trough and Ti Trough in Royal, which separate the Coral Sea Plateau from the Great Barrier Reef. In addition, there are three deep-sea trenches near the edge of the island chain in the eastern part of the Coral Sea: San Cristobal Trench (83 10/0m), Torres Trench (9162m) and New Hebrides Trench (9165m).

The shallow sea sediments on the shelf and platform are coral sand and carbonate cuttings, while the deep sea sediments are red clay and globigerina ooze. The lagoon of the Great Barrier Reef is terrigenous sediments, and there are a lot of volcanic sediments near New hebrides.

Coral sea climate

It belongs to tropical maritime climate. The monthly average temperature of 65438+ 10 is 28℃ in the north and 26 ~ 27℃ in the south; July 22 ~ 26℃ in the north

South18 ~ 22℃; The annual temperature is not high, 4℃ in the north and 6℃ in the south. The precipitation is less, about 10 mm in the north and about 5 ~ 8 mm in the south in June. Coral Sea is located in the trade wind zone in the southern hemisphere, where easterly winds or southeast winds prevail. The wind speed in the whole sea area is about 5m/s in May 438+1October, 5-6m/s in the north and 6-7m/s in the south in July. The water surface is relatively calm, and these conditions are very suitable for the growth of corals. Small corals breed and grow on the continental shelf and shallow beaches, and develop into countless coral reefs. These coral reefs are generally only slightly exposed from the water, and their colors are mottled in the clear water, showing a gorgeous tropical scenery.