Poor Coastal Development
Developed coasts change natural beach processes. Even a single building alters natural movement of wind which can disrupt sand transport, movement of rainwater runoff, and negatively impact plants and animals. Aesthetically, development reduces the quality of visits by tourists and once development begins, more follows. The long history of beach development in Europe and the northeastern United States has resulted in heavy modification of, and in some cases total destruction of, natural beaches.
Development on coasts is in grave danger in the coming decades from the combination of sea level rise and storms. When coastal development is built too close to the shore, the results can be devastating as evidenced by recent hurricanes Ike and Katrina in the United States. Two simple concepts must be followed:
- Do not build a house that will be underwater in the next 50 years and
- Do not build a house that will be knocked down by a storm.
These two basic principles are seldom followed today and when they are not, the costs can be human lives and billions of dollars.
After a large storm strikes, rebuilding is often financed with public money. Once a coastal community has been developed, rebuilding efforts often focus on putting things back the way they were rather than making objective decisions about changes that need to be made based on the rising sea. Developed coastlines need to retreat from the coast to allow the beach to move. Coastlines are dynamic, but buildings are not. More information on this topic can be found at the website of The Program for the Study of Developed Shorelines at Western Carolina University in Cullowhee, North Carolina, USA.
Map of North and South America shows increasing populations in coastal areas, which will expose 2.75 billion people worldwide to the effects of sea level rise and other coastal threats posed by global warming.
Surfing in / Poor Coastal Development
The science of why the beaches have eroded is not nearly as complex as the politics attached to their recovery.
Four and a half months after the disaster caused by storm Xynthia, the french “Plan Digues” is presented.
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THESEUS is the largest Integrated Project funded by the European Commission (6,530,000 €) and consists of 31 partner institutes. The project will develop during the next four years a systematic approach to deliver both a low-risk coast for human use and healthy coastal habitats for evolving coastal zones subjected to multiple factors.
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The main attractions of the coastal towns besides the beaches are the Nature Reserve, and the off shore mussel farms. Not anymore.
Jane Lubchenco says that precisely because the communities were so close to the epicenter, tsunami waves arrived “almost instantaneously.”
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A slide show of European Bad Beach Management by Andrew Cooper.
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Hurricane Katrina destroyed communities in Louisiana. Ike leveled the Port Bolivar peninsula and parts of Galveston.
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