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