Dr. Gül Sürmelihindi is a geologist who did her PhD on carbonate deposits in Roman aqueducts in Turkey at the Johannes Gutenberg University of Mainz, Germany.

She is specialised in carbonate stable isotope analysis and all aspects of ancient water structures. 

She is presently working at the Max Planck Institute for the History of Science and the TOPOI Excellence Cluster in Berlin, Germany on Roman water lifting machines.

She joins the HYDRΩMED project as a member of the Mainz research team to study the carbonate deposits in the Syracusan Galermi aqueduct.