IP 5 - Test Sites

Test sites of the individual project 5:

In the test sites Erdalen & Bødalen, research is focused on the quantitative analysis of storage elements and Holocene sedimentary fluxes and budgets, as well as on subrecent and present-day sedimentary fluxes and budgets. A spectrum of methods is used including geophysical techniques, dating techniques and monitoring techniques for process analysis. The integration of Holocene, subrecent and present-day process rates is expected to provide knowledge on how the inheritance of the landscape due to the influence of the Last Glacial Maximum has affected different geomorphologic processes, especially source-to-sink processes and process rates over time in a typical U-shaped valley system.

Test site details Erdalen & Bødalen

 Erdalen (image)
Bødalen (image)
Region
Nordfjord, Sogn og Fjordane, western Norway
Nordfjord, Sogn og Fjordane, western Norway
Geographical coordinates
N 68°58’ | E 32°40'
N 61°48’ | E 07°05'
Elevation (a.s.l.)
20-1888 m
52 - 2082 m
Catchment size
79 km²
60 km²
Climate
subarctic oceanic
subarctic oceanic 
Vegetation
moos, lichen, meadows, bogs, trees
moos, lichen, meadows, bogs, trees 
Topography
U-shaped valley
U-shaped valley 
Lithology
Northwestern Precambrian gneiss
Granitic orthogneiss, intrusive Monzonite
Denudative
geomorphic processes
glacial, periglacial, fluvial, slush flows, rock falls,
boulder falls, avalanches, debris flows, creep  
glacial, periglacial, fluvial, slush flows, rock falls,
boulder falls, avalanches, debris flows, creep  
Storage / sink elements
valley filling, lake storage, talus cones, deltas
valley filling, lake storage, talus cones, deltas
Human influence
grazing, some tourism
grazing, some tourism

Period of observations Erdalen

Investigations were started in 2004. The Erdalen catchment is instrumented with an automatic weather station which provides continuous hourly data on: wind speed and direction, air temperature, precipation, snow cover thickness, ground temperatue and radiation. Four stationary gauging stations are installed at the outlets of the different sub-catchments and the entire upper Erdalen catchment for continuous year-round monitoring of runoff, fluvial suspended sediment and solute transport.Runoff occurs year-round, with high discharges occurring during spring snowmelt, summer glacier melt flow and extreme rainfall events. These periods are also the periods with the highest intensity / frequency of geomorphic processes. The closest meteorological station with a longterm record (data record since 1940) is located in Oppstryn.

Period of observations Bødalen

Investigations on storage elements were started in 2004. The Bødalen catchment will be  instrumented in June 2009 with an automatic weather station which provides continuous hourly data on: wind speed and direction, air temperature, precipation, snow cover thickness, ground temperatue and radiation. Further four stationary gauging stations will be installed at the outlets of the different sub-catchments and the entire Bødalen catchment for continuous year-round monitoring of runoff, fluvial suspended sediment and solute transport.Runoff occurs year-round, with high discharges occurring during spring snowmelt, summer glacier melt flow and extreme rainfall events. These periods are also the periods with the highest intensity / frequency of geomorphic processes. 

 

 
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