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The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth (since 1979), which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1]
Deepsea Challenger (DCV 1) was a 7.3-metre (24 ft) deep-diving submersible designed to reach the bottom of the Challenger Deep, the deepest-known point on Earth.On 26 March 2012, Canadian film director James Cameron piloted the craft to accomplish this goal in the second crewed dive reaching the Challenger Deep.
During the ROV ABISMO's deepest sea trails dive its manometer measured a depth of 10,257 m (33,652 ft) ±3 m (10 ft) in "Area 1" (vicinity of 12°43' N, 143°33' E). [ 204 ] [ 205 ] Leg 2, under chief scientist Takashi Murashima, operated at the Challenger Deep 8–9 June 2008, testing JAMSTEC's new full ocean depth "Free Fall Mooring System ...
Oceanic trenches typically extend 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor. The greatest ocean depth to be sounded is in the Challenger Deep of the Mariana Trench , at a depth of 10,911 m (35,798 ft) below sea level.
Shallow springs at depths of 5–7 m can be reached by free dive near Gantiadi. Tamaz Kiknadze (1979) reported submarine springs near the eastern part of Gagra at depth of 25–30 m [10] and Buachidze and Meliva (1967) revealed submarine discharge at depths up to −400 m by hydrochemical profiling. [8]
Its volume is 119,349,000 m³ and the area of its opening is 274,000 m 2. This material has been dissolved and carried away by the river. The sinkhole is a doubly nested structure—the upper bowl is 320 meters (1,050 feet) deep, the lower bowl is 342 meters (1,122 feet) deep, and the two bowls are on average 257 to 268 m (843 to 879 ft) across.
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Download QR code; Print/export Download as PDF; ... The deepest area is oceanic rather than continental crust. ... 1.5 × 10 ^ −5: