PhD Candidate: Marine Sediment - Georeactors for Modifying Seafloor Chemistry

The Department of Geological Sciences is part of the Faculty of Science at Stockholm University. It consists of approximately 80 teachers, researchers, doctoral students, and technical and administrative staff. The department conducts broad activities in basic and applied research in marine geology and geophysics, geochemistry, and classical geology. More information about us can be found at: Department of Geological Sciences. Project Description Deteriorating environmental conditions in the ocean, such as acidification and oxygen depletion, can have extensive consequences for climate, biodiversity, and ecosystem function. In coastal and enclosed marine areas—including the Baltic Sea—human activity can drive environmental deterioration, which can lead to changes that are difficult or impossible to reverse. So-called geoengineering has therefore been proposed as a possible strategy to counteract deteriorating conditions in the oceans. Before large-scale interventions are considered, however, their effectiveness, risks, and side effects must be evaluated through studies of natural systems and through controlled experiments. This project examines the potential of marine sediments to function as georeactors to strengthen ocean resilience, from both an eutrophication and climate perspective. By recreating relevant natural conditions in laboratory experiments, the project will evaluate how both natural processes and targeted human interventions affect the biogeochemical interaction between surface sediments and the overlying seawater. The overall objective is to determine whether sediment-based processes can help counteract environmental deterioration while preserving the integrity and function of the system consisting of sediment and seawater. Qualification Requirements To be admitted to doctoral studies, the applicant must have general and specific eligibility. Eligibility must be fulfilled no later than the final application deadline. You have general eligibility if you have completed an advanced-level degree, or completed course requirements of at least 240 higher education credits (hp), of which at least 60 hp at an advanced level, or in another way within or outside the country acquired substantially equivalent knowledge. Specific eligibility is described in the general curriculum for doctoral studies in the subject of geochemistry: At least 90 hp in geoscience At least 30 hp in mathematics, physics, chemistry, and/or biology depending on the chosen subject area within geochemistry or biogeochemistry Furthermore, at least 60 hp at an advanced level, including 30 hp independent work in geoscience. Selection Selection among eligible applicants takes place with consideration to the ability to benefit from doctoral studies. The following criteria are used to assess this ability: Experience conducting long-term laboratory incubation experiments. Experience with analytical laboratory methods and instrumentation, including IC (ion chromatography), ICP-OES, titration, spectrophotometry, etc. Experience with geochemical sampling during research expeditions. Programming skills, particularly in processing and analyzing time-series data. Written and oral communication skills in English. Analytical ability and collaboration skills. Creativity, initiative, and independence. The applicant's potential to succeed, documented through a brief research proposal (max 2 pages) attached to the application. The assessment is based on previous experience and grades, the quality of the thesis work, references, relevant laboratory or field experience, interviews, and the applicant's written motivation for applying for the position. The person who is hired is expected to start as soon as possible. Admission Order for Doctoral Studies at Stockholm University. About the Position We offer a fixed-term position as a doctoral candidate according to Chapter 5 of the Higher Education Ordinance (1993:100). The period of employment may not exceed what corresponds to doctoral-level full-time studies for four years. As a doctoral candidate, you shall primarily devote yourself to your own doctoral studies, but the employment may include work with teaching, research, and administration to a limited extent (maximum 20%). A new position as a doctoral candidate is valid for a maximum of one year; the employment is then renewed for a maximum of two years at a time. Stockholm University values being a workplace free from discrimination and provides equal rights and opportunities for all. Contact Further information is provided by University Lecturer in Geochemistry, Dr. Wei-Li Hong, [email protected] Application You apply for the doctoral position via Stockholm University's recruitment system. Attach a cover letter and CV as well as the attachments requested in the application form. As an applicant, you are responsible for ensuring that your application is complete in accordance with the announcement and that it reaches the university no later than the final application deadline. Instructions for applicants can be found on the webpage: applying for a position. Stockholm University contributes to the development of a sustainable democratic society through knowledge, enlightenment, and the pursuit of truth.

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