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Current investments in the river and coastline protection ("Ruimte voor de Rivier" and "Zwakke Schakels") are done not only to protect for the current condition
by tda 9y ago
Current investments in the river and coastline protection ("Ruimte voor de Rivier" and "Zwakke Schakels") are done not only to protect for the current conditions, but also for the anticipated climate change.
As an example, the second large expansion for the port of Rotterdam, Maasvlakte2, is at 6m above sea level. The previous one is at 5m. That added one meter has cost a few hundred million euro's extra, but money well spent in my opinion. The foundation of the Maasland Barrier is designed for a storm surge of 6m above mean sea level, even though the gate is currently at 5m above. Thats why it can easily be upgraded.
So even though not much is changing in the general publics perspective, for large infrastructure that takes 10 years to prepare and design, and is built to work for 50-100 years, taking into account (expected) climate change has been a necessity for many decades now.
On another note, here is a nice point cloud visualization of the entire country: http://ahn2.pointclouds.nl/ http://ahn2.pointclouds.nl/
- davedx 9y agoInteresting visualization, but I don't understand it. I went to Ede, Gelderland (where I live), and while the city itself is mostly blue, the Hoge Veluwe just NE of the city is suddenly yellow (or is it green? I'm color blind), indicating that it's ~45m above sea level. That can't be right, the Hoge Veluwe is on the same level as Ede. What am I misreading? Edit: I think I understand what's happening: the land immediately east and north of Ede is forest, so I guess the increased elevation in the point cloud is trees.
- jacquesm 9y agoNo, the Hoge Veluwe actually is that far above sea level. http://elevationmap.net/hoge-veluwe-national-park-netherlands?latlngs=(52.0786694,5.832455799999934) http://elevationmap.net/hoge-veluwe-national-park-netherland... Definitely not the tree tops. That's also why it is called 'Hoge Veluwe' to begin with. (Hoge being Dutch for 'high'). The highest point is 110 m above sea level.
- tda 9y agoyou can zoom in to individual tree level. I just did, and can confirm this data includes trees. Also make sure to adjust the colormap min and max to your area of interest. This dataset is the official height measurement of the Netherlands (of a few years ago), made with LIDAR. So it should be accurate to within a few cm.
- owenversteeg 9y agoThat's funny, I also went to Ede on the map (I have family that lives there.) The Hoge Veluwe is actually a mix of yellow and green, but the actual trees are yellow. If you put the quality on Ultra the trees are suddenly visible as trees. Also, looking at the scale: Ede is around 20-25m above sea level, the ground of the trees is around 30m above sea level, and the trees are around 45m above sea level. So the trees are around 10-15 meters tall, fairly consistently.