1. Offshore sand bars were beginning to form and they were a hazard to the ships that were offloading or onloading their cargo at Tweed River. The easiest solution was to build a breakwater.
2. The natural transportation of sand up the coast towards the Gold Coast was cut off as the sand stopped moving and built up at the Breakwaters.
3. Longshore drift moved sand up the coast North towards the Gold Coast, meaning sand build up across the mouth of the river. This then beacme a hazard for ships trying to travel up the river as they could become stuck or damaged by the sand bars.
4. It was a short-term solution only as the process was expensive and innefficient.
5. Pipelines underground pump the sand from where it accumulates to the beaches that are lacking sand on the Gold Coast
6. This project has been regarded as one of the most successful coastal management strategies implemented in Australia because it is so efficient and subtle. I think the process is really clever and there is no better solution to such a situation. The dredging of the sand was both expensive and environmentally unfriendly whereas the pipeline is very efficient and inexpensive (in comparison to the dredging).
7.
8. The beach has become more square and the is more sand has built up around the recently built Breakwater.
9. 500m
No comments:
Post a Comment