Challenger Deep
node · earth
The deepest known point of the world ocean, a slot-shaped depression at the southern end of the Mariana Trench, named for HMS Challenger which first sounded the area in 1875. Its depth is genuinely unsettled: post-2000 published values cluster roughly between 10,910 m and 10,935 m below mean sea level, with a 2010 multibeam survey reporting a considerably deeper 10,984 +/- 25 m that direct pressure-gauge descents have not confirmed. Different surveys use different methods (wire sounding, echo sounder, multibeam, submersible pressure gauge), different sound-velocity corrections and different vertical datums, and the published disagreements exceed the stated uncertainties. Commonly cited position: about 11 deg 22.4' N, 142 deg 35.5' E.
Read in · 1
Evidence · 4
- So, How Deep Is the Mariana Trench?
- Revised depth of the Challenger Deep from submersible transects; including a general method for precise, pressure-derived depths in the ocean
- Kaiko full-ocean-depth ROV operations at the Challenger Deep
- GEBCO global bathymetric grid and the Nippon Foundation-GEBCO Seabed 2030 Project
Timeline
No dated observations are stored for this object. Atlas shows what was observed and when — it does not infer a history.
Connections · 3
- Hadal Zonepart_of
- DSV Limiting Factor (Triton 36000/2)assesses
- Mariana Trenchlocated_in
Assembled narrative · 1
An assembled narrative is available for this object.
Observed changes · 0
No public Signals are attached to this object. Signals show what changed and when it was observed — never a direction or a rank.
Actions
/atlas?object=SITE_CHALLENGER_DEEP