Heavy surf from Hurricane Sandy crashes on to the sand. All beaches with defences ... are in danger. When you build the sea wall, that is the end of the beach. Photograph: Mark Wilson/Getty Images
The worlds beaches are being washed away as coastal developments increase in size and engineers build ever higher sea walls to defend against fierce winter storms and rising sea levels, according to two of the worlds leading marine geologists.
The warning comes as violent Atlantic and Pacific storms this week sent massive 50ft waves crashing over sea defences, washed away beaches and destroyed concrete walls in Europe, north America and the Philippines.
Most natural sand beaches are disappearing, due partly to rising sea levels and increased storm action, but also to massive erosion caused by the human development of the shore, said Andrew Cooper, professor of coastal studies at the University of Ulster.
The widespread damage on western Europes storm-battered shores, the devastation caused by hurricane Sandy along the northeastern US seaboard, the deaths brought on by typhoon Haiyan in the Philippines all exemplify the total inadequacy of [coastal] infrastructure and the vulnerability of cities built on the edge of coastlines, said Orrin Pilkey, professor of earth and ocean sciences at Duke University in Durham, North Carolina.
Pilkey and Cooper say in a new book, The Last Beach, that sea walls, which are widely believed by many local authorities to protect developments from erosion and sea level rise, in fact lead to the destruction of beaches and sea defences and require constant rebuilding at increasing cost.
Dunes and wide beaches protect buildings from storms far better than sea walls, say the authors. The beach is a wonderful, free natural defence against the forces of the ocean. Beaches absorb the power of the ocean waves reducing them to a gentle swash that laps on the shoreline. Storms do not destroy beaches. They change their shape and location, moving sand around to maximise the absorption of wave energy and then recover in the days, months and years to follow, said Pilkey .
Beaches in nature are almost indestructible, but seawall construction disrupts the natural movement of sand and waves, hindering the process of sand deposition along the shorelines, said Cooper.
The wall itself is the problem. If you build a sea wall to protect the shore, the inevitable consequence is that the beach will disappear. The wall cannot absorb the energy of the sea. All beaches with defences ... are in danger. When you build the sea wall, that is the end of the beach, he said.
Beaches have become long, narrow engineering projects sustained only by constant maintenance and ongoing expenditures. Ugly seawalls have removed beaches altogether. Trying to hold the shoreline in position makes a flexible response to sea level rise more difficult, said Pilkey.
Visit link:
World's beaches being washed away due to coastal development
- Seabean Symposium-Live Blogging - November 8th, 2009 [November 8th, 2009]
- Alvaro Jaramillo Talks Gulls at 2010 Space Coast Birding Festival - November 8th, 2009 [November 8th, 2009]
- Fall Sunset on Anna Maria - November 8th, 2009 [November 8th, 2009]
- Fort Myers Beach Photos Revisited - November 8th, 2009 [November 8th, 2009]
- Reinier Munguia Keynote at Space Coast Birding & Wildlife Festival - November 8th, 2009 [November 8th, 2009]
- Wilderness Matters - November 8th, 2009 [November 8th, 2009]
- Raptor Project Brings Winged Predators to Space Coast Birding Festival - November 8th, 2009 [November 8th, 2009]
- Sandscupting Festival on Fort Myers Beach - November 8th, 2009 [November 8th, 2009]
- David Allen Sibley to Deliver Keynote at Space Coast Birding & Wildlife Festival 2010 - November 8th, 2009 [November 8th, 2009]
- Kevin Mims & Paddle Florida on the Suwannee River - November 8th, 2009 [November 8th, 2009]
- Zipolite Beach, Oaxaca, Mexico, Central America - November 8th, 2009 [November 8th, 2009]
- Port Charlotte Beach Park, Port Charlotte, Florida - November 8th, 2009 [November 8th, 2009]
- The Kent in South Beach, Miami – Budget Beach Hotel in Florida - November 8th, 2009 [November 8th, 2009]
- Key West, Florida Dog Beach – Where Pooches Can Play - November 8th, 2009 [November 8th, 2009]
- The Startling White Sand of Hyams Beach, New South Wales, Australia - November 8th, 2009 [November 8th, 2009]
- Palm Island Beach, Cape Haze, Florida - November 8th, 2009 [November 8th, 2009]
- A Surfer’s Paradise at Punta Morena Beach, Cozumel - November 8th, 2009 [November 8th, 2009]
- Sand the Color of Olives: Papakolea Beach, Hawaii - November 8th, 2009 [November 8th, 2009]
- Hilton Sandestin Beach Golf Resort & Spa in Destin, Florida - November 8th, 2009 [November 8th, 2009]
- Visiting Indialantic Beach? Check out the Crowne Plaza Melbourne Beach - December 13th, 2009 [December 13th, 2009]
- Say Good-bye to Manatee County Public Beach Pier - December 13th, 2009 [December 13th, 2009]
- Eco-tourism Field Trips at the Space Coast Birding & Wildlife Festival - December 13th, 2009 [December 13th, 2009]
- Birding at Sea: Pelagic Birding Aboard the Pastime Princess - December 13th, 2009 [December 13th, 2009]
- Space Coast Birding & Wildlife Festival Video Clip - December 13th, 2009 [December 13th, 2009]
- Gulfster’s Surf Trip to Puerto Rico - December 13th, 2009 [December 13th, 2009]
- Holiday Candlelight Tour of Homes, St. Petersburg, FL - December 13th, 2009 [December 13th, 2009]
- Kevin Mims: An Outdoorsman to Follow - December 13th, 2009 [December 13th, 2009]
- How Big is This Wave? - December 13th, 2009 [December 13th, 2009]
- Birders: Making a List and Checking it Forever - December 13th, 2009 [December 13th, 2009]
- Hunting Island State Park – Dog Friendly Beach in Beaufort, SC - December 13th, 2009 [December 13th, 2009]
- Beach Hotels in Ocean Park, Washington - December 13th, 2009 [December 13th, 2009]
- San Diego, CA – Ocean Beach Dog Beach - December 13th, 2009 [December 13th, 2009]
- Best Beaches for Collecting Sea Glass - December 13th, 2009 [December 13th, 2009]
- Swimwear in 2010 combines key trends - December 13th, 2009 [December 13th, 2009]
- S-Turns Beach in Rodanthe, Outer Banks of North Carolina, Wiped Out By Nor’easter - December 13th, 2009 [December 13th, 2009]
- In Awe at the Okinawa Churaumi Aquarium in Okinawa, Japan - December 13th, 2009 [December 13th, 2009]
- Summertime in the Outer Banks, North Carolina - December 13th, 2009 [December 13th, 2009]
- Panama City Beach May Not Welcome Spring Breakers in 2010 - December 13th, 2009 [December 13th, 2009]
- Bahia Honda Beach near Key West, Florida - December 13th, 2009 [December 13th, 2009]
- U.S. Supreme Court Hears Case Regarding Florida Beach Ownership - December 14th, 2009 [December 14th, 2009]
- Historic Sites of Canaveral National Seashore - December 19th, 2009 [December 19th, 2009]
- Myrtle Beach Building Boardwak Along Beachfront, Adding Amenities - December 19th, 2009 [December 19th, 2009]
- Barrier Island Center Upcoming Events 2010 – Melbourne Beach, Florida - December 19th, 2009 [December 19th, 2009]
- Florida Wildflowers & Plants – Space Coast Birding Festival Field Trip - December 20th, 2009 [December 20th, 2009]
- Jellyfish in Long Beach Aquarium - December 20th, 2009 [December 20th, 2009]
- Heron Island in Great Barrier Reef under new management - December 21st, 2009 [December 21st, 2009]
- Sunset on Longboat Key - December 23rd, 2009 [December 23rd, 2009]
- Pishing With Pete at the Space Coast Birding Festival - December 23rd, 2009 [December 23rd, 2009]
- Summer is Over, but it Lives on My Hard Drive - December 25th, 2009 [December 25th, 2009]
- 800 Pound Beachball to Drop Over Panama City Beach, Florida on New Year’s Eve - December 27th, 2009 [December 27th, 2009]
- Birding by Ear and Habitat with Paddy Cunningham-Pascatore - December 27th, 2009 [December 27th, 2009]
- Prevention of Overfishing of Coral Reefs Reduces Occurrence of Coral Diseases - December 28th, 2009 [December 28th, 2009]
- Florida Screech Owls Encouraged by Nest Boxes - December 28th, 2009 [December 28th, 2009]
- Cayo Costa Photo Memories - December 28th, 2009 [December 28th, 2009]
- Family Activities at the Space Coast Birding & Wildlife Festival - December 31st, 2009 [December 31st, 2009]
- BeachHunter’s Top 10 Beach Photos in 2009 - January 2nd, 2010 [January 2nd, 2010]
- Viera Wetlands is a Premier Birding Destination in Brevard County - January 2nd, 2010 [January 2nd, 2010]
- Here are a Few More Florida Summer Beach Memories. - January 3rd, 2010 [January 3rd, 2010]
- Lake Morat Puts the Beach in Swiss Beaches - January 6th, 2010 [January 6th, 2010]
- Smoking Banned at Beaches Around the Country - January 6th, 2010 [January 6th, 2010]
- Identifying Gulls – A Field Trip to Brevard County Landfill - January 6th, 2010 [January 6th, 2010]
- Victoria and Albert Museum in London Sponsors World Beach Project - January 7th, 2010 [January 7th, 2010]
- Does It Snow in Florida? - January 9th, 2010 [January 9th, 2010]
- Sun, sand and history found in Bodrum, Turkey - January 9th, 2010 [January 9th, 2010]
- Winter swimming rules at Den Haag’s beaches. - January 9th, 2010 [January 9th, 2010]
- Boats, Kayaks and Birds - January 10th, 2010 [January 10th, 2010]
- Snorkeling with Sea Turtles in Akumal, Mexico - January 11th, 2010 [January 11th, 2010]
- A Hidden Gem – San Agustinillo, Oaxaca, Mexico - January 12th, 2010 [January 12th, 2010]
- Penguins on the Beach at Betty’s Bay - January 12th, 2010 [January 12th, 2010]
- Robert Amoruso Photography Workshops at Space Coast Birding Festival - January 12th, 2010 [January 12th, 2010]
- Scuba Diving with Bull Sharks in Playa Del Carmen, Mexico - January 13th, 2010 [January 13th, 2010]
- California Beach Tradition Threatened - January 13th, 2010 [January 13th, 2010]
- Who’s Going to the 13th Annual Space Coast Birding & Wildlife Festival? - January 15th, 2010 [January 15th, 2010]
- Getting Away From It All in the Dry Tortugas - January 16th, 2010 [January 16th, 2010]
- History of the Bikini - January 19th, 2010 [January 19th, 2010]
- Conservation and the Economics of Birding - January 20th, 2010 [January 20th, 2010]
- Landlocked Swiss Hit the Beach at Lake Zurich - January 21st, 2010 [January 21st, 2010]
- Northern Ireland’s Blue Flag Beaches - January 22nd, 2010 [January 22nd, 2010]
- A beach of sorts in old Dun Laoghaire. - January 22nd, 2010 [January 22nd, 2010]
- Beach Sunrise Memories - January 22nd, 2010 [January 22nd, 2010]