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Latest Wind wave Stories

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2009-08-10 11:45:00

U.S. scientists believe they have made great headway in understanding what have been termed, freak waves. These rogue waves are relatively large and spontaneous ocean surface waves that are a major threat to large ships and ocean liners. They have a height of more than twice the significant wave height (SWH). They are not necessarily the biggest waves at sea, but they are incredibly large compared to the state of the sea.  U.S. oceanographers developed a computer simulation that might...

2009-08-05 14:30:00

Stories of ships mysteriously sent to watery graves by sudden, giant waves have long puzzled scientists and sailors. New research by San Francisco State professor Tim Janssen suggests that changes in water depth and currents, which are common in coastal areas, may significantly increase the likelihood of these extreme waves.Published in the Journal of Physical Oceanography, Janssen's wave model simulations show that focusing of waves by shoals and currents could increase the likelihood of a...

2009-07-31 12:14:47

Schools and hospitals could one day be protected from feeling the effects of an earthquake. CNRS researchers at the Institute Fresnel in Marseille (1) have come up with a system that could protect buildings from the most destructive seismic waves. Based on mathematical models, such an 'invisibility cloak' could find applications ranging from the automobile and aviation industries to earthquake protection. The paper appears in the journal Physical Review Letters dated 10 July 2009.The...

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2009-07-30 10:35:00

A giant new machine called' Oyster' designed to harness the power of ocean waves and turn it into "Ëœgreen' electricity is being installed on the seabed off the Atlantic shores of the Orkney Islands. In autumn 2009 it will undergo demonstration trials to prove whether its innovative technology could lead to a commercial source of renewable energy for use in seashores around the world.In contrast to many other wave power devices, Oyster uses hydraulic technology to transfer wave...

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2009-07-15 20:05:00

U.S. government researchers announced Wednesday that satellites can spot the leading edge of a Tsunami by detecting giant waves and getting people out of their way. The researchers looked at satellite images in the Indian Ocean as the December 2004 tsunami hit Thailand, Sri Lanka and other places.  They found patterns in the water that shows evidence of the big wave. "We've found that roughness of the surface water provides a good measure of the true strength of the tsunami along its...

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2009-05-29 12:44:24

"Anybody who observes waves can see that they are not the same height in winter and summer, but rather that their height varies over time, and we have applied a 'non- seasonal' statistical model in order to measure extreme events such as these", Fernando J. M©ndez, an engineer at the Institute of Environmental Hydraulics at the University of Cantabria and co-author of a study published recently in the journal Coastal Engineering, tells SINC. The new model can chart the pattern of extreme...

2009-05-07 12:58:36

A U.S. study suggests wind blowing over mountain ranges can generate gravity waves that propagate vertically into Earth's upper mesosphere. Researchers said such waves, known as mountain waves, have previously been observed low in the atmosphere. But Steven Smith, Jeffrey Baumgardner and Michael Mendillo of the Center for Space Physics at Boston University said their research has produced the first unambiguous images of mountain gravity waves in the upper mesosphere -- 50 to 62.5 miles in...

2009-05-04 19:18:45

Scientists are postulating a huge wave -- a tsunami -- slammed into the region that is now New York City about 2,300 years ago. The researchers say they've found evidence of a powerful ocean wave dumping sediment and shells across Long Island and New Jersey, and depositing wood debris far up the Hudson River, the BBC reported Monday. Further testing will be done to rule out other possible causes for the upheaval, such as an unusually large storm, the British network said. Steven Goodbred of...

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2009-04-15 08:05:00

Studying satellite radar data from ESA's Envisat and the Italian Space Agency's COSMO-SkyMed, scientists have begun analyzing the movement of Earth during and after the 6.3 earthquake that shook the medieval town of L'Aquila in central Italy on 6 April 2009. Scientists from Italy's Istituto per il Rilevamento Elettromagnetico dell' Ambiente (IREA-CNR) and the Istituto Nazionale di Geofisica e Vulcanologia (INGV) are studying Synthetic Aperture Radar (SAR) data from these satellites to map...

2009-04-01 17:01:45

British mathematicians say they've created a formula that can be used to predict tsunamis and how destructive the tsunamis might become. Scientists at Newcastle University, led by Professor Robin Johnson, studied the 2004 tsunami that devastated coastal communities in Indonesia, Sri Lanka, India and Thailand when an ocean earthquake triggered a long surface wave that resulted in six massive consecutive wave fronts. The third wave, the largest, reached a height of more than 65 feet and, among...


Latest Wind wave Reference Libraries

Basic Ocean Terms
2013-02-05 12:52:11

Image Credit: Meteorologist Joshua Kelly When meteorologists are forecasting for ocean-going vessels, there are a few terms that we need to understand. The first term is wavelength. Wavelength is defined as the distance between two crests or between two troughs as seen in the image above. The example above highlights the crest to crest concept of wavelength. The next term that we use is wave height, and to determine this, we first must look at the wave when it passes our station. When...

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Word of the Day
ramage
  • Boughs or branches.
  • Warbling of birds in trees.
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