Nature · South Sandwich Trench · Southern Ocean · 2019 grid
Factorian Deep: depth and source profile
This surveyed section of Factorian Deep reaches approximately 7,432 meters below the EGM96 geoid.
≈ 7,432 m
Data-derived estimate- Measurement
- Depth below EGM96 geoid · 75-meter survey grid
- Subject or version
- South Sandwich Trench · Southern Ocean · 2019 grid
- In feet, rounded
- 24,384.5 ft (1 ft = 0.3048 m)
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A little more perspective
201 unchanged 75-meter raster cell centers along a 15-kilometer section. Depth is negative raster elevation. No interpolation, missing-cell filling, datum transformation or vertical exaggeration. Straight segments connect measured cells; they are not additional soundings. The section reaches 7432.3876953125 meters at -60.479192°, -25.545693°. Stored decimals preserve the raster value, not centimeter accuracy. Both ends remain underwater.
The Five Deeps study calls this an unnamed deep and reports 7,432 ± 13 meters south of 60° S, with a submersible result of 7,434 ± 3 meters. The published analysis and this archived grid are separate results. Neither the profile nor its vertical datum has been adjusted to force agreement. The acquisition report identifies EGM96 as its geoid reference.
The southern South Sandwich Trench site is commonly called Factorian Deep. It lies south of the 60° S boundary used by the study for the Southern Ocean. Meteor Deep is deeper but lies north of that boundary in the Atlantic; the two sites are separate records here.
Quick facts
This surveyed section of Factorian Deep reaches approximately 7,432 meters below the EGM96 geoid.
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Sources and measurement notes
- NOAA NCEI: PD19ST02 survey archive
- Caladan Oceanic: acquisition report, geoid reference in section C.3
- Bongiovanni, Stewart and Jamieson (2021): Five Deeps bathymetry study
- British Antarctic Survey: Factorian Deep and Southern Ocean mapping
Compare measured sections with their source and datum intact; do not treat grid precision as survey accuracy.
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