Doctorate
If you would like to pursue a doctorate in one of the geosciences at the University of Cologne, the first step is to find an official principal supervisor ("advisor"). This has to be a person who is legally entitled to supervise a doctoral research project in the Faculty of Mathematics and Natural Sciences (MNF) (a professor or Privatdozent).
For all other steps, consult the Internet pages of the Doctoral Office. For any correspondence with the Doctoral Office, use the e-mail address mnf-promotionenuni-koeln.de and mention "Geosciences" or "GSGS" in the subject line, so that your message can be assigned to the person in charge of our subject area, Ms Gotzmann.
Please visit the website of the Albertus Magnus Center (AMC - the university-wide center for supporting early-career researchers) for general information on pursuing a doctorate at the University of Cologne, e.g. on how to go about finding a supervisor.