SailNet Community - Reply to Topic

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest > General Discussion (sailing related) > Massive waves a mystery at Maine harbor
 Not a Member? 


Thread: Massive waves a mystery at Maine harbor Reply to Thread
Title:
  

By choosing to post the reply below you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Topic Review (Newest First)
11-05-2008 02:45 PM
JohnRPollard There's also another thread running about this incident:

http://www.sailnet.com/forums/genera...afternoon.html
11-05-2008 12:00 PM
SailKing1 I was sailing out on the Chesapeake about 3 years ago leaving out of port when I saw a wave of about 4 feet that was stationary. It continued to roll and even occasionally cap but was not moving. It stretched for about 6 miles from the Bridge tunnel almost to the beach in Ocean view.

We sailed over it (no Choice) with the boat peaking at almost 45 degrees and slamming down the other side. The rest of the bay on both sides was relatively calm with only 5 -8 knot winds. Not even rollers.

Best we could determine was it happened because of the tide change. It was just abit strange watching a 4 foot wave that was not moving. We sailed on watching it until out of site.
11-05-2008 11:46 AM
N0NJY I was thinking that... you know, living in the mountains, I'm ready with my boat

(When the rains come. LOL)
11-05-2008 11:35 AM
WouldaShoulda Locusts are next, no doubt!!
11-05-2008 11:32 AM
bubb2
Quote:
Originally Posted by N0NJY View Post

Explosive decompression of underwater methane could also be a factor.
sort of like taking a bath after eating chili
11-05-2008 11:06 AM
N0NJY Anyone up that way have any insights on this? Witnesses? Information?

Rick
11-05-2008 11:06 AM
N0NJY
Massive waves a mystery at Maine harbor

Massive waves a mystery at Maine harbor

Massive waves a mystery at Maine harbor - The Boston Globe


Owen Johnson (left) and his father, Peter, repaired damage yesterday done by waves in Boothbay Harbor.
(Joel Page for The Boston Globe)

Dockworker Marcy Ingall saw a giant wave in the distance last Tuesday afternoon and stopped in her tracks. It was an hour before low tide in Maine's Boothbay Harbor, yet without warning, the muddy harbor floor suddenly filled with rushing, swirling water.

In 15 minutes, the water rose 12 feet, then receded. And then it happened again. It occurred three times, she said, each time ripping apart docks and splitting wooden pilings.

"It was bizarre," said Ingall, a lifelong resident of the area. "Everybody was like, 'Oh my God, is this the end?' " It was not the apocalypse, but it was a rare phenomenon, one that has baffled researchers. The National Weather Service said ocean levels rapidly rose in Boothbay, Southport, and Bristol in a matter of minutes around 3 p.m. on Oct. 28 to the surprise of ocean watchers. Exactly what caused the rogue waves remains unknown.

"The cause of it is a mystery," said National Weather Service meteorologist John Jensenius, who first reported the waves from a field office in Gray, Maine. "But it's not mysterious that it happened."

Specialists have posed a variety of possible explanations, saying the waves could have been caused by a powerful storm squall or the slumping of mountains of sediment from a steep canyon in the ocean - a sort of mini tsunami. The last time such rogue waves appeared in Maine was at Bass Harbor in 1926.

Jensenius said the occurrence is so unusual, that specialists don't have a name for the phenomenon.

"That's part of our problem," he said.

A similar occurrence in Florida more than 15 years ago continues to baffle researchers. A series of 12- to 15-foot waves hit Daytona Beach on July 3, 1992, injuring more than 20 people and lifting and tossing dozens of cars.

Jeff List, an oceanographer at the US Geological Survey at Woods Hole said he and other researchers studied the occurrence, but no one has been able to pinpoint the cause. And he said similarly enormous waves appeared once on the Great Lakes.

Could such a wave or waves enter Boston Harbor, or even engulf the Massachusetts coast?

"It seems a little unlikely one could hit Boston," List said. "But then again, these things are always surprises when they occur."

A squall line surge, which occurs when fast-moving storm winds sweep over water that is traveling the same speed, can create such a wave. (The speed of waves is directly related to wind speed and the depth of the ocean at any given point.)

List and other specialists said such an occurrence is exceedingly rare, but when it occurs, "you get this interaction that causes a large bulge of water to rise up."Continued...

Jensenius said that might have been a factor last week, when a major storm front brought rain to most of the East Coast, particularly southern New England. But he said that does not solve the mystery, adding that he had not ruled out a massive "land slump" underwater. Such slumps can create waves that may be classified as tsunamis, although no where near the size and scale of the tsunami that occurred in the Indian Ocean in 2004. Those fast-moving and deadly waves were caused by a massive earthquake.

Tsunami-like waves may not be as rare on the East Coast as most people think. Jensenius referenced a 2002 article in the International Journal of the Tsunami Society that called the threat of tsunami and tsunami-like waves generated in the Atlantic Ocean "very real despite a general impression to the contrary."

The article said such waves appear "in most cases to be the result of slumping or landsliding associated with earthquakes or with wave action associated with strong storms."

Explosive decompression of underwater methane could also be a factor.

Jensenius said he is trying to gather information on the waves that hit Boothbay Harbor, adding that he has asked local businesses such as banks whether the event might have been recorded on security videos.

"It could be this or it could be that, but as a science, it is very difficult to tie it down," he said of the waves.

List also said the waves could have been triggered by the same conditions that cause a tsunami, including a breaking glacier. Rogue waves can result from a tsunami traveling through the ocean that breaks "down into numerous waves."

According to the National Weather Service, no earthquakes or seismic activity were reported in the area when the Boothbay waves appeared. List noted that there was no seismic reading when the Daytona waves struck.

Tom Lippmann, an oceanographer in the Marine Sciences Department at the University of New Hampshire, said he also suspected that the Maine wave was a squall line surge. The National Weather Service incorrectly called it a tide surge, he said.

"Tides in the Gulf of Maine are essentially driven by celestial bodies' pull on the earth's water," he said. "They're very well predicted and very well known."

Residents and business owners in Boothbay said they were glad the phenomenon didn't happen at high tide, when it might have caused massive flooding and more extensive damage. Janice Newell, who lives nearby in Head of the Harbor, told the local newspaper the rushing water "was of biblical proportion."

"There were three large whirlpools in the inner harbor, up to within a foot of my neighbor's wall," she told the Boothbay Register. "It was beautiful, but it was scary."

Elena Smith, a waitress and part-owner of McSeagull's restaurant overlooking the harbor, said the late-afternoon lunch crowd sat speechless as the waters rose and receded. She was stunned to see the normally safe and placid harbor suddenly run like rapids. Some residents reported seeing massive whirlpools of water that disappeared, leaving clam shells and seaweed in vortex patterns on the harbor floor.

"It felt like somebody took the plug out somewhere" in the ocean, Smith said. "It felt like there must have been water missing in the ocean someplace."

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


All times are GMT -4. The time now is 01:03 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.