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The Mariana Trench is an oceanic trench located in the western Pacific Ocean, about 200 kilometres (124 mi) east of the Mariana Islands; it is the deepest oceanic trench on Earth. It is crescent-shaped and measures about 2,550 km (1,580 mi) in length and 69 km (43 mi) in width. The maximum known depth is 10,984 ± 25 metres (36,037 ± 82 ft ...
The Mariana Islands are the southern part of a submerged mountain range that extends 1,565 miles (2,519 km) from Guam to near Japan. Geographically, the Marianas are part of a larger region called Micronesia, situated between 13° and 21°N latitude and 144° and 146°E longitude. The Mariana Islands have a total land area of 1,008 km 2 (389 sq ...
The Marianas Trench Marine National Monument is a United States National Monument created by President George W. Bush by the presidential proclamation no. 8335 [3] on January 6, 2009. [4][5][6][7] The monument includes no dry land area, but protects 95,216 square miles (246,610 km 2) of submerged lands and waters in various places in the ...
Oceanic trenches are prominent, long, narrow topographic depressions of the ocean floor. They are typically 50 to 100 kilometers (30 to 60 mi) wide and 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor, but can be thousands of kilometers in length. There are about 50,000 km (31,000 mi) of oceanic trenches worldwide ...
The Northern Mariana Islands, officially the Commonwealth of the Northern Mariana Islands[b] (CNMI; Chamorro: Sankattan Siha Na Islas Mariånas; Carolinian: Commonwealth Téél Falúw kka Efáng llól Marianas), is an unincorporated territory and commonwealth of the United States consisting of 14 islands in the northwestern Pacific Ocean. [11]
Sonar mapping of the Challenger Deep by the DSSV Pressure Drop employing a Kongsberg SIMRAD EM124 multibeam echosounder system (26 April – 4 May 2019). The Challenger Deep is a relatively small slot-shaped depression in the bottom of a considerably larger crescent-shaped oceanic trench, which itself is an unusually deep feature in the ocean floor.
The Challenger expedition of 1872–1876 was a scientific programme that made many discoveries to lay the foundation of oceanography. The expedition was named after the naval vessel that undertook the trip, HMS Challenger. Maps of the Challenger 's route. The expedition, initiated by William Benjamin Carpenter, was placed under the scientific ...
Marginal seas. v. t. e. The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continents of Asia and Australia in the west and the Americas in the east.