This is one of the most dangerous stretches of water in the world, where 1 million foot cubic water a second struck with 20 or 30 feet waves of the Ocean on a stretch of four miles of sand shifting.
A small band of pilot emission conditions often dangerous to guide ships in the Columbia River bar extending over Washington and Oregon.
Drivers who work the "graveyard of the Pacific" have a deep respect for the relentless forces, they face on a daily basis as they Ascend tankers, bulk carriers, car transporters and ships passenger and cargo stand off the coast. They commute in 72-foot recovery vessels that can roll over 360 degrees in winter gales and sometimes force an explosion of North Pacific storms hurricane.
Drivers also confirm this as specialists of the Sea began to speak: the ocean waves are increasingly larger and more powerful, and climate change could be the cause.
"We were talking a few years now,", said Captain Dan Jordan, who has served in shipping for 30 years to become a driver of Columbia Bar. "The mother nature has an easy way to tell us who is in charge."
Using the buoy and models based on wind plans, scientific data say the waves of the Pacific Northwest Coast and along the Atlantic coast of West Palm Beach, Florida, Cape Hatteras, N.C., increase constantly size. And, at least in the Northwest, the big waves are considered more a threat to coastal communities and beaches that the rise in sea level accompanying global warming.
Similar increases the wave height was noticed in the North Atlantic off the coast of England.
Unclear is whether increased the number and the height of the "rogue" waves beyond the continental shelf. The existence of such waves freak, which can reach 100 feet or more in height and can marshes a large vessel in a few seconds, has not proven until 2004, when the European satellites equipped with radar detected 10 of them for a period of three weeks. According to some estimates, two merchant ships per month disappear without trace, appears to be victims of rogue waves.
"Obviously, it is a question that interests us," said Trevor Maynard team popular London Lloyd developments change and emerging risks that climate world tracks. "We are witnessing climate change fingerprints on a batch of events."
Increase in the average
Since the mid 1970s, buoy data show that larger wave height of Northwest Coast has increased an average of approximately four inches a year, or about 10 feet total according to Peter Ruggiero, Geosciences at Oregon State University Assistant Professor and is the principal author of a study published recently in the coastal engineering journal.
Ruggiero and his colleagues also estimated how high a wave of 100 years could be. It would be great waves would enter as well as all the 100 years. Estimate has increased by 40% since the 1970s, 33 46 feet feet. Some calculations consider that a wave of 100 years could be high 55-foot taller than a five-storey building.
"We assume that trends will grow in the future," said Ruggiero.
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