Timescales of sediment dynamics, climate and topographic change in mountain landscapes (SedyMONT) Erdalen and Bødalen site project
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1 Timescales of sediment dynamics, climate and topographic change in mountain landscapes (SedyMONT) Erdalen and Bødalen site project Achim A. Beylich Geological Survey of Norway (NGU), Quaternary Geology and Climate group, Leiv Eirikssons vei 39, NO-7491 Trondheim, and Norwegian University of Science and Technology (NTNU), Department of Geography, Dragvoll, NO-7491 Trondheim, Norway
2 Individual Projects (PI Name) IP1: Schlunegger (Uni Bern) CH IP2: Reiterer (TU Vienna) AT IP3: Hinderer (TU Darmstadt) DE IP4: Schrott (Uni Salzburg) AT IP5: Beylich (NGU and NTNU Trondheim) NO IP6: Molnar (ETH Zurich) CH Associated Projects (AP name) AP1: Densmore (Uni Durham) UK AP2: Picotti (Uni Bologna) IT Project Title Assessment of timescales of sediment discharge in selected sites of the Swiss Alps (Illgraben, Rotenbach, Erlenbach) Analysis of short term in-situ erosion rates by image-based measurement systems (ASTIRI) High resolution 3D architectural analysis and chronology of the Illgraben fan Sediment budget for a glacier forefield (Pasterze, Upper Tauern, Austria)- quantification and temporal variability Erdalen and Bødalen site project (Nordfjord, western Norway): Holocene, sub-recent and present-day source-to-sink-fluxes in a valleyfjord system Analysis and modelling framework for sediment production and yield in mountain basins under climate change Project Titel Sediment dynamics and evolution of the Illgraben fan Sediment transfer processes in glaciated and unglaciated landscapes (Southern Alps and Northern Apennines)
3 Projects in other European settings: Schrott (IP4) Beylich (IP5) Picotti (AP2) Calibration of the temporal variability in sediment discharge in the forefield of the Pasterze glacier (Austrian Alps) Holocene to modern sediment fluxes in a valley-fjord system (Erdalen and Bødalen sites), and Sediment transfer processes in glaciated and unglaciated regions (Southern Alps, Apennines) The conceptual framework for the interpretation of time series of sediment flux will be provided by: Molnar (IP6) Modelling framework for sediment yield and transfer in mountainous catchments
4 The Norwegian Individual Project within SedyMONT: Erdalen and Bødalen Site Project Funding (4 years): NFR (4.0 Mio. NOK)
5 Study areas in Nordfjord, western Norway Nordfjordeid Stryn Hjelle Erdal Bødal
6 Erdalen valley
7 Bødalen valley
8 With respect to the main aims and objectives of ESF SedyMONT, the following main key aims of the Erdalen and Bødalen site project can be stressed: Analyse how the inheritance of the landscape due to the influence of the Last Glacial Maximum (LGM) has affected process rates over time (paraglacial system) Document changes in process rates over different timescales by combining existing quantitative knowledge on Holocene process rates with newly generated data on sub-recent and contemporary process rates.
9 This new project is building on: - NFR SEDITRANS ( ) (Larsen) - NGU Source-to-sink-fluxes in cold environments ( ) (Beylich) - NGU Holocene landscape formation in cold environments (2008) (Beylich) - ESF SEDIFLUX / I.A.G.-A.I.G. SEDIBUD (since 2004) (Beylich) - NFR / DAAD Biofilm ( ) (Gintz, Beylich)
10 Project leader Secretary Project participants Achim A. Beylich (NGU, NTNU) Katja Laute (NTNU) Ivar Berthling (NTNU) Isabel Cyr (NGU) Marc Derron (NGU) Ola Fredin (NGU) Louise Hansen (NGU) Jan Steinar Rønning (NGU) Lena Rubensdotter (NGU) Geir Vatne (NTNU)
11 PhD students External collaborators Diploma student in 2009 Susan Liermann (SedyMONT) Katja Laute (SedyMONT) Timi Lopez (Individual PhD project) Valentin Burki (Uni Zurich-I.) Dorothea Gintz (TU Kaisersl.) Björn Heincke (Uni Kiel) Armelle Decaulne (Clermont-Ferr.) Marion Kandziora (Uni Kiel) Assistants (students) in 2009 Jørn Kristiansen (NTNU) Jaran Wasrud (NTNU) Torgeir Haugstulen (NTNU) Jeanette Gundersen (NTNU) Frederik Eide (NTNU) Sarah Köbke (NTNU) Dagmar Kleemann (Uni Halle) Tobias Müller (Uni Bonn) Elin Jantze (Uni Uppsala)
12 Methods: - Monitoring programme in combination with repeated analyses of surface water chemistry, atmospheric solute inputs and granulometric analyses of suspended sediments
13 Instrumentation of study area:
14 - Tracers (shock sensors, pit tags) and biofilm analysis are applied to analyse channel stability / mobility and bedload transport rates in both valleys - Monitoring of contemporary slope processes (tracer lines, photo documentation, etc.) - Volume and composition of lake sediments are studied using echo-sounder, georadar, coring, sediment traps - Geophysical methods: georadar, seismic refraction surveys - Detailed mapping in combination with digital elevation models and data
15 Orthophoto interpretation Geomorphological mapping Focus of PhD project: recent slope processes and hillslope-channel coupling Research aims are: to identify possible sediment sources and delivery pathways/hillslope-channel coupling over Holocene to contemporary timescales analysing the spatial distribution and quantifying the volume of sediment storage landforms (talus cones / colluvial fans) data basis processing objectives Classification of storage landforms (talus cones, colluvial fans) DEM / GIS Identification of different current talus slope types (morphometry) Spatial distribution of slopes and their variation over time Identification of recent delivery pathways Changing hillslope - channel coupling / decoupling over time Geophysical data Data on discharge, bed-, suspended, and solute load Analyses of sediment slope storage and calculation of recent sediment transfer Sediment input from slopes into channels Quantifying volumes of sediment slope storage Current process rates and future trends of sediment fluxes
16 Slope investigations / field methods for June and August - surveying slope profiles (morphometry) - photo monitoring - lines of painted stones (tracer) at different elevations - lines of wooden stakes at different elevations - measuring of dissolved load
17 Investigations on hillslope-channel coupling / field methods for June and August - pebble counts on selected stretches below the slope sites - using of PIT tags on slopes / within the channel - shock sensors
18 PhD project Will be mainly focused on quantitative and integrated analysis of Holocene to contemporary sediment fluxes and sediment budgets with interpretation of controlling factors (morphometric and meteorological controls) and effects > Lake sediments: sedimentation rates & volume coring current sedimentation rates sediment traps > Fluvial valley fills: delta morphometry akkumulation rate monitoring drilling, seismic refraction, georadar > Sediment transfer: different tracer techniques, pebble count Susan Liermann 14/05/09
19 PhD Project - Fieldwork 2009 Moored sediment trap array and location sites ( ) Susan Liermann 14/05/09
20 Biofilm analysis in cold environment Usage of biofilm for detecting mobile or stabile river channels and the possible bed load transport Study area: Erdalen and Bødalen Methods: Bioflim analysis through confocal laser scanning microscopy surface Question: What differences do you find in the biofilm, regarding the thickness, structure and biological attack. Are there any inferences to find, regarding the bed load transport? 10 cm beneath the surface research of 4 stretches in Erdalen as well as in Bødalen 4 periods (beginning of June/August, end of June/August) influencing factors: e.g. water temperature, nutrients, ph Dagmar Kleemann
21 Spatial and temporal variability of solute and suspended sediment concentration in Erdalen Spatio-temporal variability and controlling factors Sources of solute and suspended sediments Methods/available data: - electric conductivity - automatic sampling - vertically integrated water samples - statistical analysis - continuous year-round hydrological and meteorological data (since october 2005) Focus: Erdalen with probably 6-8 sampling sites in June and August 2009 Bødalen as a comparison Discussion of used methods (data quality due to varying time intervals and methods) Diploma thesis Marion Kandziora
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