NJ Saltwater Fisherman Forums
NJ Saltwater Fisherman => Weather and Hurricane Info => Topic started by: Pfishingruven on June 24, 2013, 08:40:22 PM
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Very interesting! I missed the outcome, but heard talk of a rogue wave washing fishermen off the jetty. Never heard anything more and tonight a friend pointed this out to me.
http://www.nbcphiladelphia.com/news/local/Tsunami-Strikes-the-Jersey-Shore-212814951.html
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I heard the talk from my daughter about it she works down there. It was not confirmed at that time but yeah a tsunami hit NJ...
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Wow! Interesting.
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cfzd wow
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Wow....what next ?? Locusts ??
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Wow, that is crazy !!! Thankfully everyone is ok.
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Wow! Interesting.
Bob, this must have been what Jason was telling us about. cfzd
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nosmly...What the heck is going on in jersey.... 5hrug
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They are investigating this tsunami up the entire eastern seaboard. Reports that Narragansett Bay experienced a tidal change with some elevated swell and waves.
I actually got a Tsunami Warning on my phone last night, that was quickly canceled. There have been numerous 6.0+ earthquakes at the North Atlantic Ridge that could be triggering these events!
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They are investigating this tsunami up the entire eastern seaboard. Reports that Narragansett Bay experienced a tidal change with some elevated swell and waves.
I actually got a Tsunami Warning on my phone last night, that was quickly canceled. There have been numerous 6.0+ earthquakes at the North Atlantic Ridge that could be triggering these events!
Really?? So could there be more and bigger? Scary stuff! :-\
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Really?? So could there be more and bigger? Scary stuff! :-\
Yes, ever since the Asian and Japan Tsunamis, tidal waves have been receiving a lot of attention. The Pacific is used to this and probably has a tsunami warning a week, especially in Alaska and Hawaii. However, the East Coast has not had a major earthquake in many years and there are major faults, including several in the middle of the Atlantic that could trigger a tsunami. Putting all of the Hollywood drama aside, the eastern seaboard has just as much of a risk of a major tsunami as does the West Coast and Pacific Areas!
Geology and earthquakes are not my forte, however it is partly covered in Physical Oceanography. Here is a link to NOAA's Tsunami Website. When you get a chance, click on the link for US East Coast Tsunami Threat. It is a shorter lecture/power point presentation that goes over east coast tsunamis. You can also click on the link for Tsunami Preparedness.
NOAA Tsunami Website (http://www.tsunami.noaa.gov/)
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Talk is that it was caused by the nasty front that spanned from LBI to NE states. It produced what is called a;
Meteotsunamis-- are the same kind of waves with the same kinds of effects, caused by rapid changes in air pressure. They have the same long periods and the same damaging behavior in harbors. The main difference is that they have less energy. Damage from them is highly selective, limited to harbors and inlets that are well aligned with the waves. In Spain's Mediterranean islands, they are called rissaga; they are rissagues in mainland Spain, marubbio in Sicily, seebär in the Baltic Sea, and abiki in Japan. They have been documented in many more places, including the Great Lakes.
How They Work
A meteotsunami starts with a strong atmospheric event marked by a change in air pressure, such as a fast-moving front, a squall line, or a train of gravity waves in the wake of a mountain range. Even extreme weather changes the pressure by small amounts, equivalent to a few centimeters of sea-level height. Everything depends on the speed and timing of the force, along with the shape of the water body. When those are right, waves that start out small can grow through the resonance of the water body and a pressure source whose speed matches the wave's speed.
Next, those waves are focused as they approach shorelines of the right shape. Otherwise they simply spread away from their source and fade out. Long, narrow harbors that point toward the incoming waves are affected worst because they offer more of the reinforcing resonance. (In this respect meteotsunamis are similar to seiche events.) So it takes an unlucky set of circumstances to create a notable meteotsunami, and they are pinpoint events rather than regional hazards. But they can kill people—and more important, they can be forecasted in principle.
Notable Meteotsunamis
A large abiki ("net-dragging wave") surged into Nagasaki Bay in 31 March 1979 that reached wave heights of nearly 5 meters and left three people dead. This is Japan's most notorious site for meteotsunamis, but several other vulnerable harbors exist. For instance, a 3-meter surge was documented in nearby Urauchi Bay in 2009 that capsized 18 boats and threatened the lucrative fish-farming industry.
Spain's Balearic Islands are noted meteotsunami sites, particularly Ciutadella Harbor on the island of Menorca. The region has daily tides of about 20 centimeters, so harbors are typically not made for more energetic conditions. The rissaga ("drying event") of 21 June 1984 was more than 4 meters high and damaged 300 boats. There is video of a June 2006 rissaga in Ciutadella Harbor showing the slow waves tearing dozens of boats off their moorings and into each other. That event began with a negative wave, drawing the harbor dry before the water rushed back. Losses were tens of million euros.
The coast of Croatia, on the Adriatic Sea, recorded damaging meteotsunamis in 1978 and 2003. In some places 6-meter waves were witnessed.
The great eastern U.S. derecho of 29 June 2012 raised a meteotsunami in the Chesapeake Bay that reached 40 centimeters in height.
A 3-meter "freak wave" in Lake Michigan killed seven people as it washed over the Chicago shoreline on 26 June 1954. Later reconstructions show that it was triggered by a storm system over the north end of Lake Michigan that pushed waves down the length of the lake where they bounced off the shore and headed straight for Chicago. Just 10 days later another storm raised a meteotsunami more than a meter high. Models of these events, programmed by researcher Chin Wu and colleagues at the University of Wisconsin and the Great Lakes Environmental Research Lab, raise the promise of forecasting them when strong weather comes.
I took much of my information from presentations at the 2012 AGU Fall Meeting and Montserrat et al., "Meteotsunamis: Atmospherically induced ocean waves," Natural Hazards and Earth System Science, 2006 (PDF).
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Wimpy do you have a link to this article? I'd like to forward it to someone not part of our group here.
Thanks
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http://geology.about.com/od/tsunamis/qt/Meteotsunamis.htm
In the last sentence, open up PDF file highlight(?can't copy Ext?).
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Just posted pics of wave's at BL, Sorry Jay
http://jaymanntoday.ning.com/profiles/blogs/weekly-blog-tsunami-s-moment-of-impact-letter-from-jetty-survivor
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http://geology.about.com/od/tsunamis/qt/Meteotsunamis.htm
In the last sentence, open up PDF file highlight(?can't copy Ext?).
Thanks...great information!
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Wow....what next ?? Locusts ??
Secadas
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Wow....what next ?? Locusts ??
Secadas
John Secadas? :headscra:
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rofla