Pacific: a few basic facts


 Pacific Ocean is the largest ocean on Earth. It occupies about 33% of its surface and contains more than 50% of all seawater.

It got its name after the voyage of F. Magellana by its waters in 1520. For that period, the ocean was calm, so a Portuguese navigator described it as “pacific” (quiet).

In the Pacific Ocean is the so-called “Ring of Fire”, consisting of many volcanoes.

In terms of total number (about 10 thousand) and area of islands, the Pacific Ocean is considered to be the first among all other oceans. Most of the large island land lies in the south and west of the ocean. The main ones are New Zealand and the Japanese and Malay archipelagos.

The amount of rainfall that falls in the Pacific Ocean exceeds evaporation. It receives more than 30 thousand cubic meters of water annually (this taking into account river flow). Therefore, the surface waters of the Pacific Ocean have a lower salinity than the rest of the oceans. On average, its magnitude is 34.58‰.

The average temperature of the waters located in the upper layers of the largest ocean is 19, 37 °C, 2 °C higher than the water temperature of the Indian and Atlantic Oceans.

The deepest place

The average depth of the ocean is approximately 4 thousand meters. And the deepest place is the Mariana Trough, which is located southwest of Fr. Guam and stretches for 2400 km. The deepest site of the depression is a gorge named “Determine”, reaching 11033 m. This is already significantly more than Mount Everest’s height of 8848m. For the first time, the depth of the chute was measured in 1957 by the vessel “Vityaz”: 11022 m. In the following years, the depth of the depression was refined.

Environmental situation

American scientists conducted studies on pollution of the Pacific Ocean and found that in its northern part in the early eighties of the last century floated millions of packets made of plastic. Plastic and glass bottles were also enough to worry about the environmental situation: 35 million and 70 million respectively. Other plastic products floated as well. Next to all these common everyday things in the ocean, you could observe items of clothing. Like old shoes. The number of them reached 5 million. All these figures in the current century will be able to increase several times, as navigation on the seas has increased, and industry with science has accelerated the pace of its development, and the calculations have certainly become better quality.

The illustrious scientist of Norway Thur Heyerdahl, sailing in 1947 on a raft of “Kon-Tiki” across the Pacific Ocean, did not meet any pollution on his way. And as early as 1969, crossing the Atlantic Ocean in a boat made of papyrus, he observed that even in its central part for 1,400 miles, the water was covered with oil film.

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