02.09.2009 S. 1 Pilot study 2: Assessment of sediment traps.

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Presentation transcript:

S. 1 Pilot study 2: Assessment of sediment traps

S. 2 Sediment trap Wedel Bearing: March 2008 HPA 223

S. 3 Sediment trap Wedel Trap built Depth ~ 2m Width ~300 m Length ~ 2 km New sedimentation rate ~ to m³ per day Grain-size of bottom material in µm Volume in %

S. 4 Monitoring programme Echo sounding Water (temperature, salinity, oxygen, current, pollution) Suspended sediment and bed load (concentration, grain size, pollution) Fish (survey of fish eggs and larvae) Cross-section: water sample Aanderaa turbidity device Calibration of the long-term turbidity measurements bottom Aanderaa RCM 9 or Aanderaa seagurad Long-term measurement with Aanderaa measuring devices Near bottom measuring device within the sediment trap