Timescales of sediment dynamics, climate and topographic change in mountain landscapes (SedyMONT) - Erdalen and Bødalen site project, 2012.

• Main Author: Beylich, Achim A.
• Format: Dataset
• Language: unknown
• Published: Norwegian Social Science Data Services 2014
• Subjects: Natural environment; Natural landscapes; Bødalsbreen; Norway; glacier
• Online Access: https://dx.doi.org/10.18712/nsd-nsd2138-v1; http://search.nsd.no/study/NSD2138/?version=1

The focus of this Norwegian Individual Project "Timescales of sediment dynamics, climate and topographic change in mountain landscapes (SedyMONT) - Erdalen and Bødalen site project, 2012" within SedyMONT, is on the Erdalen and Bødalen catchments in Nordfjord, western Norway. Both valleys provide based on the ongoing reserach, excellent opportunities to integrate existing and detailed quantitative knowledge on Holocene process rates with new data on sub-recent and contemporary solute and sediment fluxes and process rates generated within this project. Contemporary sediment flux data was established by the continuation of the existing monitoring programme in Erdalen and by the new instrumentation of the Bødalen catchment. This new monitoring programme, in combination with repeated analyses of surface water chemistry, atmospheric solute inputs and granulometric analyses of suspended sediments provided high-resolution data to analyse and quantify present-day sediment and solute fluxes as well as sediment sources, denudation rates and meteorological and topographic /landscape morphometric controls of denudative processes. In addition to standard methods for monitoring bedload transport, innovative techniques like shock sensors and biofilm analysis were applied to analyse channel stability/mobility and bedload transport rates in both valleys. Samples of filtered surface water and suspended particulate material collected on filters was compiled to estimate the particulate and dissolved loads of runoff from the Erdalsbreen glacier in Erdalen and the Bødalsbreen glacier in Bødalen. The volume and composition of lake sediments were studied using echosounder, georadar and coring. Investigations on volumes and architecture of storage elements (valley infills, talus cones) using different geophysical methods like georadar and seismic refraction surveys were performed to further improve the quantitative knowledge on Holocene process rates. Detailed mapping was performed and interpreted in combination with digital elevation models and data. For access to the dataset, use the NSD order form: http://www.nsd.uib.no/nsd/english/orderform.html