http://http://jupiter.ethz.ch/~arozel/index.html http://http://jupiter.ethz.ch/~arozel/CV.html http://http://jupiter.ethz.ch/~arozel/publications.html Antoine Rozel

Presentation

TO PROTEST AGAINST THE TRAVEL BAN ENFORCED BY THE TRUMP ADMINISTRATION, I NOW REFUSE TO ENTER THE USA UNTIL A REASONABLE IMMIGRATION POLICY IS ADOPTED.
Several of our colleagues were denied access to the USA because of their nationality. Let's not accept this situation.
A free country does not promote racism, sexism, the distribution of weapons to its population, a ridiculously overpriced education, death penalty, the denial of climate change and repeated lies in general.
Obviously, I happily work with people wherever they come from, whatever their sex and their skin colour.


Research

I am interested in the evolution of the planets and satellites of the solar system. I use both analytical and numerical approaches to understand convecting bodies.

Over the last years, I have been working a lot on melting and crust production in planetary mantles. Melting and crust production may not be the most important process at present in the solar system, I believe (or let's say simulations show that) it might have been a first order process in the early solar system.

There are some evidences that the mantle of the Earth has been cooling by few hundreds of Kelvin over the last 4 billion years. It is reasonable to think that a lot more crust must have been created in a warmer mantle, especially since magma is generated today on Earth due to decompression melting which does not necessarily requires the presence of plumes. Another thing is that the core of the Earth must have been cooling as well, meaning that the plumes coming up 4 billion years ago much have been quite a lot warmer than present day plumes. In order to solve a lot of open questions related to magmatism, we develop the convection code StagYY in ETH Zurich.

Drawings/paintings

I am also an amateur painter (see my gallery online). I do think that drawing helps me designing new science as it forces me to visualise what I think should happen. The image below shows what a first order idea of a giant impact could look like:

And the sketch below summarizes a simple view on the Earth's history based on our numerical simulations and various type of data:

Global warming

I think global warming is a major problem that we all have. I have been traveling quite a lot over the last years. I now chose to reduce a lot my CO2 emission. I take the train as much as possible and stopped taking long distance flights. Also I believe we should use much more videoconferencing in our every day life. See a blog post on this.