vannets vei i landskapet jannes stolte
TRANSCRIPT
Vannets vei i landskapet
Jannes Stolte
Vannets vei i landskapet:
Extreme weather in small catchments
new method for flood protection
the ExFlood Project
funded by: NORKLIMA (Norwegian Research Council)
Problem
15 January
16 January
Typical overland flow velocities
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
0.001 0.01 0.1 1
water dikte h (m)
V (
m/s
)
interrill rill gully
Water depth (m)
Hypothesis
Runoff during a rainstorm along wine rows (1-2 l/s)
Accumulation in fields (10-100 l/s)
Accumulation in catchment (>1000 l/s)
Accumulation downstream, 100-1000 m3/s
downstream
ExFlood Approach
Extreme Event Land use
change/management
Peak discharge
Study sites
Trondheim
Ås (test site)
Fredrikstad
Sandnes
Measures in rural areas Main focus is delay of the peak discharge
Measures in rural areas Main focus is delay of the peak discharge:
forest areas
Measures in rural areas Main focus is delay of the peak discharge:
agricultural area
Measures in rural areas
Measures in urban areas
Grønne tak
Regnbed
Grønne tak
Tyskland Sverige
Mer enn 50 %
av årsnedbør
holdes tilbake
Hva med
kaldt
klima?
Landscapearkitektur students 2011
Trondheim: Oddveig Eriksen Hovdenak
Fredrikstad: Andreas Vadum
Sandness: Katinka Kilian
Decision tool for land use planning
The ExFlood project contributes to:
- what kind of measures
- effectiveness of these measures
- land use planning process