PhD Student Chemistry, Physics (m/f/d)

The Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI) is a member of the Helmholtz Association (HGF) and funded by federal and state governments. AWI focuses on polar and marine research in a variety of disciplines such as biology, oceanography, geology, geochemistry, and geophysics, thus allowing multidisciplinary approaches to scientific goals. PhD position in “New Analytical Techniques for the Oldest Ice in Antarctica” (m/f/d) Background Project title: Al/Be/Cl in the Beyond EPICA Oldest Ice Core: A multi-method investigation of post- depositional changes and their implications for radiometric dating There are ongoing international efforts to drill and retrieve an ice core from Antarctica (Beyond EPICA Oldest Ice Core) that will cover the enigmatic Mid-Pleistocene Transition. However, the interpretation of the obtained proxy records from the deepest ice will be challenged by their post-depositional changes occuring in the ice matrix, making a better understanding of these processes paramount. This project aims to provide unique constraints on the interpretation of the climate signals obtained from the ice core. Embedded in the ERC funded project AiCE, this PhD-project aims at applying novel laser ablation time-of-flight ICP-MS to generate high-resolution 2D elemental maps of chemical impurities in ice to investigate their post-depositional alteration, focusing on the novel analytes Al and Cl. You will also prepare samples for cosmogenic radionuclide analyses (10Be/26Al/36Cl). Taken together, these results will be used to study the effects of element migration and mineral formation/dissolution on climate records obtained from deep ice cores. This will contribute to a better understanding and interpretation of ice core climate records, which are urgently needed to achieve the goals of Oldest Ice. You will develop a method for the laser ablation ICP-TOF-MS measurement of Cl, Al, Be on ice conduct LA-ICP-TOF-MS measurements of artificial and real ice perform method tests for cosmogenic radionuclide sample preparation prepare cosmogenic radionuclide samples interpret, present and publish your results MSc (or equivalent) in Geosciences, Chemistry or Physics or a related field Strong background in (geo-)chemistry Strong analytical skills and demonstrated, relevant laboratory experience Prior experience in ice core analysis and dating, laser ablation applications and ICPMS advantageous Good communication skills in English, both oral and written For any questions you may have, you are very welcome to get in touch with Pascal Bohleber (+49(471)4831-1508; apply.job.24889866@hokifyjob.com or Florian Adolphi (+49(471)4831-1008; apply.job.24889866@hokifyjob.com This position is limited to 3 years. The salary will be paid in accordance with the Collective Agreement for the Public Service of the Federation (Tarifvertrag des öffentlichen Dienstes, TVöD Bund), up to salary level 13 (66%). The place of employment will be Bremerhaven. All doctoral candidates will be members of AWI's postgraduate program POLMAR or another graduate school and thus benefit from a comprehensive training program and extensive support measures. The AWI is characterized by our scientific success - excellent research collaboration and cooperation - intra-institute, national and international, interdisciplinary opportunities to develop - on the job and towards other positions an international environment - everyday contact with people from all over the world flexible working hours health promotion and company fitness support services and a culture of reconciling work and family occupational pension provision (VBL) AWI values diversity and actively promotes gender parity, as well as an open, inclusive environment that provides equal opportunities. We are convinced that diverse teams and a variety of perspectives enrich our work and our daily collaboration. In a continuous process of learning and reflection, we aim to ensure th...