Geographers, read the scenario below then leave your comments explaining what you think should be done and why.
Dawlish is a small town on the south coast of England. A pretty place, it has a small but important tourist trade that provides jobs and income to the town. The main railway line connecting the south west to London runs along the coast through Dawlish. Recently the area and the railway line has been under threat from coatal erosion. The local council does not have a huge amount to spend and are keen to save the railway line and preserve the look of the town. Below are a list of options the council could use:
-sea-wall
-groynes
-gabions
-managed retreat
-rip rap
-beach replenishment
Research each of the coastal defenses above and make a recommendation of which one Dawlish should implement and why. Remember to leave your names on the post.
I think a sea wall will be best to put here since it would stop the waves from going anywhere near the area and railway line.
ReplyDeleteAndrew Craddock
I think Dawlish should implement the Gabions as on average they cost £5000 per 100m
ReplyDeleteMaking it a cheaper option for this place by my research
Kira Woodrofe
10p1
I think that groynes are a good idea because it can be made by just about using any material. Also rip rap is rather good because they last a long time and actually work.
ReplyDeletelinda hammond 10p1
I think that they should bulid lots of rip raps as it doesn't cost much and it looks nice and it will help them save the railways from costal erosion.A rip rap usually costs around $35-$50 per yd sqaured. Here is how a rip rap looks like this:
ReplyDeletehttp://www.google.co.uk/imgres?imgurl=http://duongslawncare.com/samples/rip_rap.jpg&imgrefurl=http://duongslawncare.com/MaterialSamples_Rock.htm&usg=__2R3ao9MQk70RCWW3JCH9qp0cjZI=&h=300&w=400&sz=46&hl=en&start=0&zoom=1&tbnid=YSyhU16Xu4QkbM:&tbnh=167&tbnw=216&prev=/images%3Fq%3Drip%2Brap%26um%3D1%26hl%3Den%26safe%3Dactive%26sa%3DN%26biw%3D1259%26bih%3D823%26tbs%3Disch:10%2C348&um=1&itbs=1&iact=hc&vpx=145&vpy=97&dur=93&hovh=194&hovw=259&tx=173&ty=78&ei=xr_zTP-sGZKKhQftwIm6Cg&oei=xr_zTP-sGZKKhQftwIm6Cg&esq=1&page=1&ndsp=20&ved=1t:429,r:10,s:0&biw=1259&bih=823
I think the Dawlish council should consider using groynes to defend their cost. Groynes don't cost much too make compared to the other options and they also require little or no maintenance once you have built them. The only bad thing about using groynes is that they stop long shore drift from happening which means waste is left dumped by the coastline sometimes.
ReplyDeleteLuke 10K1
Personally, I would use giant boulders and pile them up near the damaged railway. This is because they will brake the waves, and will cause them not to venture up to the railway - where the costal erosion is happening.
ReplyDeleteKatie Morgan:}.
i think the sea wall would be the best idea to use because it will stop erosion,and also it would cost less to build and put in place, also the sea wall would stop any hydraulic erosion aswel.
ReplyDeleteMitchell Shalgosky
i think they should use rip-raps because they take away the power of the wave and provides activities for the children.
ReplyDeleteAfter they are in place they should reroute the train line so the passengers can see the sea but also safe form erosion.
Aaron Smith
ithink the sea wall would be the pefect idea to be used, since it would prevent the waves from distroying or attacking the land and railway line.
ReplyDeleteMusama Chilekwa 10k1
i think the council should use a sea wall or rip rap as they both look nice, cost little, they will also help us to stop costal erosion and this will then help us to save the Dawlish local railway....
ReplyDeleteTara Hinton 10m2