651-4056-00L Limnogeology
Semester | Frühjahrssemester 2014 |
Dozierende | A. Gilli, N. Dubois, M. Strasser |
Periodizität | jährlich wiederkehrende Veranstaltung |
Lehrsprache | Englisch |
Kurzbeschreibung | This course links lakes, their subsurface and their environment. It will be shown how lake sediments record past environmental changes (e.g. climate, human impact, natural hazards) and how lake sediments can be used to reconstruct these changes. Emphasis is also given on the modern limnologic processes essential in interpreting the fossil record. With 1 or 2-day field course on Lake Lucerne. |
Lernziel | - Understanding the role of lake sediments as archives of environmental change. - Being able to plan an own limnogeologic campaign, i.e. finding, recovering, analyzing and interpreting the sedimentary lake archive to solve a particular scientific question. - Understanding the complexity of a lake system with all its connection to the environment. - Being able to link subaerial processes with subaquatic processes. - Understanding the role of lakes as archives and partly amplifier of natural hazards. - Understanding lakes as an evolving element within a larger environmental system. |
Inhalt | Content of the course: Introduction - Lakes, the small oceans History of Limnogeology. Limnogeologic campaigns Large open perialpine lakes. The water column: Aquatic physics (currents, waves, oscillations, etc.). Sediments caught in the water: sediment traps Laminations in lake sediments: Clastic vs. biochemical varves. Hydrologically closed lake systems Chronostratigraphic dating of lake sediments Lake sediments as proxies for climate change Lake sediments as recorder of anthropogenic impact The class includes a 1- or 2-day field practica on Lake Lucerne. Introduction to themes of Lake Lucerne field course. Limnogeological methods on the lake and in the laboratory: various sampling and surveying techniques (water analysis, seismic surveying, sediment coring, laboratory analyses). Fieldcourse follow-up: Seismic-core correlation and interpretation |
Skript | Will be distributed in each class unit. |
Literatur | Will be distributed in each class unit. |
Voraussetzungen / Besonderes | Credit points and grade will be given based on a written report about the field course. |