1 / 21

Delta’s on the move… How to respond to climate change? 2

Delta’s on the move… How to respond to climate change? 2. Global Air Temperature Change 1856-2001. 8 Warmest Years. Warmest Year 1998. 2 nd Warmest Year 2001. Trend = 0.6 + 0.2 o C. (CRU, 2002). Global Impacts.

dyanne
Download Presentation

Delta’s on the move… How to respond to climate change? 2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Delta’s on the move…How to respond to climate change?2

  2. Global Air Temperature Change 1856-2001 8 Warmest Years Warmest Year 1998 2nd Warmest Year 2001 Trend = 0.6 + 0.2oC. (CRU, 2002)

  3. Global Impacts Sea level rise will have significant impacts on low-lying coastal areas and small islands...

  4. RIKZ-study; SimDelta = Morphological Simulation Model Conclusion: because of the dikes and the dams sediment input from the sea was stopped. Subsidence of the polders was accelerated by drainage of the reclamated land.

  5. Comcoast project Perk polder (Province of Zealand)

  6. Comcoast project Perk polder (decided 2009)

  7. Coastal erosion(Hondsbossche Zeewering) http://www.hvanzijl.nl/images/1420a.gif

  8. The Hondsbossche sea wall along the Dutch coast. By breaking through the sea wall, part of the land behind it will flood with the tides.The silt caught up in the vegetation ensures that the land gradually increases in height in line with or even above sea level . Realised in 1997.

  9. Most of the freshwater is used to rinse incoming salt water Ies de Vries, RIKZ 310 Lek 770 Average flows (m3/s) 1520 Nieuwe Waterweg Nieuwe Maas 750 460 730 1610 620 160 Oude Maas Be. Merwede Bo. Merwede 150 990 Haringvliet 440 440 100 Grevelingen Dordtse Kil Nwe Merwede 550 880 Hollandsch Diep Maas 330 880 5 9 VZM Oosterschelde w:40 z:25 Veerse meer The average freshwater supply of Rhine and Meuse to the west part of the Netherlands is ca. 2350 m3/s, while the need for agriculture, industry and tapwater does not exceed 25 - 75 m3/s Westerschelde

  10. Shift freshwater inlet points to the east and restore the marine character of the estuary Freshwater Salt water Brackish Tidal area Dams

  11. Adaptation of agriculture in response to salt intrusion Adaptation of agriculture in saline areas Increasing salinity Salt tolerant crop Quinoa (Chenopodium quinoa) Amaranth: a salt sensitive crop

  12. Return of reclaimed land to the sea because of high maintenance costs

  13. Future vision..Netherlands embracing the sea ...

  14. Marine algae producing substances of economic value Cancer inhibitors produced by marine sponges.

  15. The “Seawing” a self-supplying floating aquaculture lab

  16. Cultivation of marine algae for fish breeding Sunlight distributed homogenously by glass fibers in algae culture Fish containers Algae production used for fish food

  17. Plan Lely (1918) designed for land reclamation Sand Clay

  18. Outlet Wadden sea Reed marshes Sluice and tidal power unit Marsh lands Outlet Brackish water; Lely lagoon Boats Inlet IJssel lake Draft plan “Water lily” after Kees Hulsbergen H2ID

  19. The Lily lagoon anno 2100 OceanLab Tekening Maarten Groot

  20. Schematic model of a delta with traditional management measures (left side picture) and modern management measures which should overcome the disadvantages of traditional measures (right side).

  21. Ecosystem based approach to river basin management: Conclusions • Is an “opportunity driven” type of management (“joy” or “Freude-aspect”) rather than a “fear driven” type of management. • Ecological and economical goals can be combined. • It is a generic concept. • Stimulates technical and non-technical innovations. • Needs interaction between society and science. Thank you for your attention!

More Related