Carsten Schubert: Katalogdaten im Herbstsemester 2020 |
| Name | Herr Prof. Dr. Carsten Schubert |
| carsten.schubert@usys.ethz.ch | |
| URL | https://www.eawag.ch/en/department/surf/main-focus/biogeochemistry/ |
| Departement | Umweltsystemwissenschaften |
| Beziehung | Titularprofessor |
| Nummer | Titel | ECTS | Umfang | Dozierende | |
|---|---|---|---|---|---|
| 701-1313-00L | Isotopes and Biomarkers in Biogeochemistry | 3 KP | 2G | C. Schubert, R. Kipfer | |
| Kurzbeschreibung | The course introduces the scientific concepts and typical applications of tracers in biogeochemistry. The course covers stable and radioactive isotopes, geochemical tracers and biomarkers and their application in biogeochemical processes as well as regional and global cycles. The course provides essential theoretical background for the lab course "Isotopic and Organic Tracers Laboratory". | ||||
| Lernziel | The course aims at understanding the fractionation of stable isotopes in biogeochemical processes. Students learn to know the origin and decay modes of relevant radiogenic isotopes. They discover the spectrum of possible geochemical tracers and biomarkers, their potential and limitations and get familiar with important applications | ||||
| Inhalt | Geogenic and cosmogenic radionuclides (sources, decay chains); stable isotopes in biogeochemistry (nataural abundance, fractionation); geochemical tracers for processes such as erosion, productivity, redox fronts; biomarkers for specific microbial processes. | ||||
| Skript | handouts will be provided for every chapter | ||||
| Literatur | A list of relevant books and papers will be provided | ||||
| Voraussetzungen / Besonderes | Students should have a basic knowledge of biogeochemical processes (BSc course on Biogeochemical processes in aquatic systems or equivalent) | ||||
| 701-1333-00L | Isotopes and Biomarkers in Biogeochemistry Laboratory  Number of participants limited to 10 General safety regulations for this course: -Whenever possible the distance rules have to be respected -All students have to wear masks throughout the course (keep reserve masks ready) -The installation and activation of the Swiss Covid-App is highly encouraged -Students showing any COVID-19 symptoms are not allowed to take part in the sampling and have to inform the course responsible | 3 KP | 4P | C. Schubert, R. Kipfer | |
| Kurzbeschreibung | This course will illustrate how different tracers and isotopes are used in natural systems. Here especially the processes (transformation, timescales) that take place and can be revealed by tracers/isotopes will be demonstrated but also flux rates will be calculated using different tracers. | ||||
| Lernziel | Students know how to use tracers/isotopes to investigate/understand ecosystems They will understand the methods and analytical devices related to tracer/isotope work Have a feeling for timescales on which natural processes occur Students will be able to apply different sampling techniques in aquatic sciences | ||||
| Inhalt | Basics: O,H isotopes as tracers for mixing in aquatic systems Carbon isotopes as tracer for methane oxidation 210Pb, 137Cs as a tracer for sedimentation rate/mixing SF6, Neon, He as tracers for exchange processes at the air/water interface Case assessment: Sampling of a Swiss lake (Rotsee) Sampling techniques for different elements Sample preparation for different techniques Measurements at isotope mass spectrometer/gamma counter Interpretation of results from the special sampling campaign and in a broader context | ||||