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The greatest ocean depth measured is in the Challenger Deep of the Mariana Trench, at a depth of 10,994 m (36,070 ft) below sea level. Oceanic trenches are a feature of the Earth's distinctive plate tectonics .
The Mariana Trench is the deepest known submarine trench, and the deepest location in the Earth's crust itself. [38] It is a subduction zone where the Pacific Plate is being subducted under the Mariana Plate. [3] At the deepest point, the trench is nearly 11,000 m deep (almost 36,000 feet).
The Middle America Trench is a major subduction zone, an oceanic trench in the eastern Pacific Ocean off the southwestern coast of Middle America, stretching from central Mexico to Costa Rica. The trench is 1,700 miles (2,750 km) long and is 21,880 feet (6,669 m) at its deepest point.
The Clipperton fracture zone is the southernmost of the north east Pacific Ocean lineations. It begins east-northeast of the Line Islands and ends in the Middle America Trench off the coast of Central America, [4] [11] [6] forming a rough line on the same latitude as Kiribati and Clipperton Island, from which it gets its name.
The Hellenic Trench, with the inner South Aegean Volcanic Arc, and the outer non-volcanic Hellenic arc [1]: 34 . The Hellenic Trench (HT) is an oceanic trough located in the forearc of the Hellenic arc, an arcuate archipelago on the southern margin of the Aegean Sea plate, or Aegean Plate, also called Aegea, the basement of the Aegean Sea.
Location Depth Depth Depth 1 Challenger Deep: Izu–Bonin–Mariana Arc, Mariana Trench, Pacific Ocean 11,034 36,197 6.86 2 Tonga Trench: Pacific Ocean 10,882 35,702 6.76 3 Emden Deep: Philippine Trench, Pacific Ocean 10,545 34,580 6.54 4 Kuril–Kamchatka Trench: Pacific Ocean 10,542 34,449 6.52 5 Kermadec Trench: Pacific Ocean
Like many other theorists, he points to a depressurisation of the cabin by the pilot to knock the 239 passengers unconscious as the pilot made a U-turn to ditch the plane in the ocean.
The trench is located in the Philippine sea of the western North Pacific Ocean and continues NNW-SSE. [1] It has a length of approximately 1,320 kilometres (820 miles) and a width of about 30 km (19 mi) from the center of the Philippine island of Luzon trending southeast to the northern Maluku island of Halmahera in Indonesia .