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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 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.
Constituting the deepest points in the Atlantic Ocean, the trench is 810 kilometres (503 mi) long [7] and has a maximum documented depth between 8,376 metres (27,480 ft) [8] and 8,740 metres (28,675 ft). [7] [9] The deepest point is commonly referred to as the Milwaukee Deep, with the Brownson Deep naming the seabed surrounding it. [10]
In 1960, Don Walsh and Jacques Piccard were the first two humans to reach Challenger Deep, completing that dive as a team. [4] 52 years later, James Cameron became the first person to solo dive that point. Piccard, Walsh and Cameron remained the only people to reach the Challenger Deep until 2019, when regular dives in DSV Limiting Factor began.
The Cayman Trough (also known as the Cayman Trench, Bartlett Deep and Bartlett Trough) is a complex transform fault zone pull-apart basin which contains a small spreading ridge, the Mid-Cayman Rise, on the floor of the western Caribbean Sea between Jamaica and the Cayman Islands. [1]
A US deep sea explorer who is among the handful of adventurers to travel to the deepest point on Earth says he would not have set foot in the missing submersible vessel that vanished on its way to ...
It is five times longer than the Grand Canyon and includes some 78,956 square miles (204,500 km 2) of virtually unexplored underwater terrain. The Sirena Deep, about 6.6 miles beneath the surface, is the deepest point of the Mariana Trench Marine National Monument.
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