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Sioo Next 60 - Stefan Aarninkhof: Building With Nature

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Bekijk de powerpointpresenatie van dr. ir. Stefan Aarninkhof, ter ere van Sioo's jubileumevent 'Sioo Next 60'. Bijbehorende audio? https://soundcloud.com/user-97872026/sioo-next-60-podcast-3

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Sioo Next 60 - Stefan Aarninkhof: Building With Nature

  1. 1. 1 Building with Nature A paradigm shift in hydraulic engineering Stefan Aarninkhof Professor of Coastal Engineering Sioo Next 60 meeting Scheveningen, 27 November 2018
  2. 2. 2 Why Coastal Engineering?
  3. 3. 3 Traditional coastal protection (Sea Palling, Norfolk UK)
  4. 4. 4 Preferred solution The Netherlands: Beach nourishment
  5. 5. 5 Trends in nourishment strategies • Volume increase • Variation layout and location • Natural diffusion of sediments along coast • Multiple functions
  6. 6. 6 Innovation: Sand Engine Delfland Sand Engine (2011)
  7. 7. 7 Key enabler (I): Understand the system Sand Motor (2017)Sand Motor (2011)
  8. 8. 8 Key enabler (II): Seize opportunities by adopting a broad perspective
  9. 9. 9 Key enabler (III): Early stakeholder engagement Ambitie overeenkomst Zandmotor (Maart 2008)
  10. 10. 10 ICON of Building with Nature Society BwN Building Nature “Develop infrastructure and at the same time use and create opportunities for nature and society”
  11. 11. 11 Ex.1: Houtribdijk reinforcement (NL)
  12. 12. 12 BwN solution: Nature-based flood defence (vegetated foreshore) Emmanuelpolder, Westernscheldt (NL) Houtribdijk nature-based flood defence (artist impression)
  13. 13. 13 Nature-based flood defence Vegetated foreshores (Vuik et al, 2016) Ex.2: Erosion of mangrove shorelines Demak (Indonesia)
  14. 14. 14 BwN solution: Trap sediment to enable natural mangrove restoration
  15. 15. 15 Ex.3: Cliffe Pools Wetland restoration (UK)
  16. 16. 16 Building with Nature: A paradigm shift in hydraulic engineering
  17. 17. 17 Building with Nature: A paradigm shift in hydraulic engineering • Think, act and interact differently • Key-enablers for implementation: – Fundamental knowledge of natural system – Added value through multi-disciplinary collaboration – Early stakeholder engagement – Modern-day institutional arrangements and evaluation frameworks • Use intrinsic motivation of students and young professionals to initiate culture change
  18. 18. 18 Alternative: Sand groynes (Courtesy Roderik Hoekstra, TUD/Deltares)Questions? Hondsbossche Duinen (2018)

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