Thomas Gribbin School of Geography, Earth and Environmental SciencesPhD student Contact details AddressSchool of Geography, Earth and Environmental SciencesUniversity of Birmingham Edgbaston Birmingham B15 2TT UK Thomas Gribbin is a PhD candidate supervised by Prof David Hannah, on a project entitled: "Water cycling in high-altitude wetlands: implications for water security in the Peruvian Andes". Doctoral research SupervisorProfessor David Hannah