Developed in 1981, with some modifications it's still very important today, eg this paper in Nature last week: http://www.nature.com/nature/journal/v543/n7646/full/nature21390.html …
The preliminary Reference Earth Model: a 1d model of the Earth's elasticity, density, pressure etc: https://en.wikipedia.org/wiki/Preliminary_reference_Earth_model …
-
-
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.