Giant ‘Gravity Hole’ in the Ocean May Be the Ghost of an Ancient Sea
--
https://www.scientificamerican.com/article/giant-gravity-hole-in-the-ocean-may-be-the-ghost-of-an-ancient-sea1/ <-- shared technical media article
--
https://doi.org/10.1029/2022GL102694 <-- shared 2023 paper
--
https://oceanservice.noaa.gov/facts/geoid.html <-- technical description of a geoid
--
[theories abound]
"... KEY POINTS
• Employing time dependent global mantle convection models since the Cretaceous. [the authors] simulate the origin of the enigmatic Indian Ocean geoid low
• Plumes forming along the edges of the African Large Low Shear Velocity province (LLSVP) control the regional geoid in the Indian Ocean
• These plumes, in turn are generated by lower mantle Tethyan slabs that perturb the African LLSVP…”
#GIS #spatial #mapping #geoid #gravity #mapping #global #remotesensing #plume #ocean #ancientocean #gravityhole #geophysics #IndianOcean #geology #structuralgeology #crust #mantle #core #high #low #potsdamgravitypotato #IOGL #tomography #model #modeling #plate #tectonicplate #Tethys #slab #mantleplume #LLSVP #AfricanLargeLowShearVelocity