University in Qatar has simulated different scenarios of the airplane entering the water and found that an almost vertical dive would leave a very tiny oil spill/debris area above water.
Again complete nonsense.
At high speeds (mach 1 plus, for a vertical aircraft) water is as hard a concrete. At mach-1 the molecules of water cannot react fast enough to the impact, and so the water becomes a non-Newtonian fluid. Check out the custard/corn-four trick, for a good example of the behavior of a non-Newtonian fluid. So the aircraft would not penetrate more than the first few meters of the sea, without disintegrating into a billion pieces.
This was proven on Mythbusters, where a low-velocity bullet would penetrate a couple of meters into water, but a high-velocity full metal jacket round could not penetrate more than a few centimeters before completely disintegrating. So a high speed impact would result in a huge debris-field.
Unfortunately, it is getting to the point where if anything is claimed by a university, academic or scientist, you know for sure it is going to be a complete load of bull. And this is a prime example of the bull modern universities are putting out nowadays. I think someone needs to address the falling standards in education, before the rot becomes terminal.
(Note that while the university just modelled the problem, while Mythbusters devised a real experiment. And the experiment proved the model to be wrong. Now where have we heard that before........?)