Southern Patagonian climate the last 51,000 years : Insights from lipid biomarkers and their isotopes
|Other Titles:||Klimarekonstruktion der letzten 51.000 Jahre in : Erkenntnisse Lipid-Biomarkern und deren Isotope||Authors:||Hockun,Katja||Supervisor:||Schefuß, Enno||1. Expert:||Mollenhauer, Gesine||2. Expert:||Diekmann, Bernhard||Abstract:||
Laguna Potrok Aike (LPA) is situated in the core region of the Southern Hemispheric Westerlies (SHW) and provides an exceptional sedimentary archive to investigate the southern Hemisphere mid-latitude climate change over the last 51,000 years. This study gives the opportunity to reconstruct climatic and environmental conditions in an area sensitive to changes in polar and mid-latitude wind fields and hydrological regimes, and it provides insights into the complex interaction of terrestrial, marine and glacial environmental changes on glacial-interglacial timescales. Within the framework of this thesis the temperature and hydrological fluctuations of the maar lake were investigated using organic-geochemical proxies based on microbial membrane lipids (so called GDGTs) and compound-specific isotope analysis (d13C and dD) of plant-wax derived n-alkanes of different origins, respectively.
|Keywords:||Laguna Potrok Aike, Southern Patagonia, lipid biomarker, isotopes||Issue Date:||27-Oct-2017||URN:||urn:nbn:de:gbv:46-00106269-11||Institution:||Universität Bremen||Faculty:||FB5 Geowissenschaften|
|Appears in Collections:||Dissertationen|
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