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Latest Coastal engineering Stories

2012-03-05 23:16:00

The increasing use of large breakwaters and other hard structures to reduce erosion in "living shorelines" along coastal estuaries may be no better for the environment than the ecologically harmful bulkheads they were designed to replace, according to a report this week by scientists at Duke and Western Carolina universities. Originally, living shorelines were designed to use natural methods such as replanted native marsh grasses and oyster reefs to stabilize and protect eroding...

2011-02-23 22:24:34

An assessment of coastal change over the past 150 years has found 68 percent of beaches in the New England and Mid-Atlantic region are eroding, according to a U.S. Geological Survey report released today. Scientists studied more than 650 miles of the New England and Mid-Atlantic coasts and found the average rate of coastal change "“ taking into account beaches that are both eroding and prograding -- was negative 1.6 feet per year.  Of those beaches eroding, the most extreme case...

2010-10-29 19:06:15

The islands flanking the outlet of the Mississippi River are not only facing losses due to sea level rise and local subsidence, according to one study, but new unknown impacts from oil recovery operations, say researchers working on another project. Both will be presenting their work on Nov. 1 and 2 at the meeting of the Geological Society of American in Denver. Some islands could disappear entirely in coming decades, exposing huge swaths of marshland to the waves of the open sea. On one side...

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2010-01-25 12:21:02

A major increase in maximum ocean wave heights off the Pacific Northwest in recent decades has forced scientists to re-evaluate how high a "100-year event" might be, and the new findings raise special concerns for flooding, coastal erosion and structural damage. The new assessment concludes that the highest waves may be as much as 46 feet, up from estimates of only 33 feet that were made as recently as 1996, and a 40 percent increase. December and January are the months such waves are most...

2009-12-10 13:46:13

Environmental scientists at the University of Pennsylvania and Durham University have employed a novel combination of geological and model reconstructions of wetland environments during a 10,000-year period to address spatial variations in sea-level history and provide quantitative estimates of subsidence along the east coast of England. The findings indicate that glacial rebound "” the rise or fall of land masses that were depressed by the huge weight of ice sheets during the last...

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2009-11-16 06:20:00

All across the islands of Hawaii, residents have stood by and watched helplessly for years as the majestic archipelago's sandy white beaches have steadily retreated "” a phenomenon that geologists warn will likely worsen in the coming decades as warming global temperatures bring rising sea levels around the world. According to the Associated Press, experts say that over 70 percent of the island Kauai's pristine beaches are on the decline while Oahu has already seen roughly a quarter of...

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2009-10-23 14:22:44

While most people head to Myrtle Beach for vacation, a group of scientists have been hitting the famous South Carolina beach for years to figure out how to keep the sand from washing away. Although they studied only a limited segment of beach, their work is a model for beach preservation that can apply elsewhere. And with talk of "balancing the sand budget" and money saved on restoration, their findings sound financial. The study will be presented to scientists from around the world at the...

2009-10-21 06:00:00

VENICE BEACH, Calif. and RAGLAN, New Zealand, Oct. 21 /PRNewswire/ -- Amalgamate Solutions and Research (ASR), the world leader in the design and construction of multi-purpose artificial reefs, announced today that it has completed Europe's first multi-purpose reef on the Boscombe shoreline, just outside of southern England's coastal town of Bournemouth. The reef was engineered and constructed by ASR, who spearheads the movement towards environmentally sensitive coastal protection....

2009-07-10 11:50:50

Expansion of coastal cities is accompanied by a decline in the quality of life of the people, which was the reason they moved to the coastal zone instead of bringing growing welfare to the inhabitants. Many Megacities such as Tokyo (pop. 36.000.000), New York (22.000.000) and London (12.000.000) are found in the coastal zone. Coastal protection measures give a sense of false security and require increasingly expensive infrastructure.The treatment and cure of these coastal syndromes includes...

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2009-04-27 05:55:00

Climate change is now threatening France's Aquitaine coast, which stretches north from the Spanish border to the Gironde River, causing erosion that is endangering coastal communities. In 2006 the European LIFE program identified 13 coastal communities as hotspots for erosion. "There is a lack of sand on the beaches, because of a period of warming -- climate change," says Cyril Mallet, of the French geology and mining research agency BRGM. Climate change means more erosion for the area,...