Baryonic dark matter: Difference between revisions

From formulasearchengine
Jump to navigation Jump to search
← Older edit
en>Nickst
{{Dark matter}}
No edit summary
 
Line 1: Line 1:
[[Image:PortisheadDocks NearHighTide.JPG|thumb|200px|right|alt High tide at Portishead Docks in the Bristol Channel.|]]
[[Image:PortisheadDocks LowTide.JPG|thumb|200px|right|alt=Low tide at Portishead Docks in the Bristol Channel. Such extreme tidal ranges are almost certainly due to resonant waves tapped between the coast and the edge of the continental shelf.|High and low tides at Portishead Docks in the Bristol Channel. Such extreme tidal ranges (13 m) are almost certainly due to a resonant tidal wave trapped between the coast and the edge of the continental shelf.]]


In [[oceanography]], a '''tidal [[resonance]]''' occurs when the [[tide]] excites one of the resonant modes of the ocean
.<ref name=Platzman91>
{{Citation
| last = Platzman
| first = G.W.
| year = 1991
| contribution =  Tidal Evidence for Ocean Normal Modes
| editor-last = Parker
| editor-first = B.P.
| title = Tidal Hydrodynamics
| publication-place = New York
| publisher = [[John Wiley & Sons]]
| pages = 883
}}</ref> 
The effect is most striking when a [[continental shelf]] is about a quarter wavelength wide.  Then an incident tidal wave can be reinforced by reflections between the coast and the shelf edge, the result producing a much higher [[tidal range]] at the coast.


Famous examples of this effect are found in the [[Bay of Fundy]], where the world's highest tides are reportedly found, and in the [[Bristol Channel]]. Large tides due to resonances are also found on the Patagonian Shelf
You can challenge problems or obsolete items for free. Underneath the Federal Credit Reporting Act (FCRA), the consumer reporting company and the information service (that&quot;s, anyone, company, or organization that provides information about you to a [http://www.Adobe.com/cfusion/search/index.cfm?term=&reporting&loc=en_us&siteSection=home reporting] company) have the effect of correcting inaccurate or incomplete information in your statement. To make the most of all your rights under this law, contact the data service and the consumer reporting organization. <br><br>Step One <br><br>Tell the consumer reporting business, on paper, what information you imagine is incorrect. Include copies (MAYBE not originals) of files that support your position. As well as giving your complete name and address, your letter should request that it be eliminated or corrected, state the important points and explain why you [http://Search.Usa.gov/search?query=dispute dispute] the info, and clearly identify each object in your report you dispute. You might want to enclose a copy of one&quot;s statement with the items involved circled. Send your letter by certified mail, return receipt requested, so you can record what the customer reporting business received. Visiting [http://tmall828.info/2014/08/20/getting-the-best-offers-in-lawyer-companies/ link] possibly provides tips you should give to your mother. Keep copies of your dispute letter and enclosures. <br><br>Unless they consider carefully your challenge careless client reporting companies must examine the things in question usually within 30 days. [http://tokyosluts.info/2014/08/19/what-is-a-criminal-defense-lawyer-7/ Home Page] is a surprising library for new resources about the meaning behind this concept. Additionally they should forward all the relevant information you give about the inaccuracy to the information that was provided by the organization. It should investigate, review the appropriate information, and report the results back to the consumer reporting company, after the information provider receives notice of an argument from the consumer reporting company. so they can correct the information in your report if the information service sees the information is incorrect, it should notify all three nationwide consumer reporting companies. <br><br>The consumer reporting company must offer you a free copy of your statement and the results in writing if the dispute results in a change, when the investigation is complete. If a product is changed or deleted, the disputed information is put by the consumer reporting company cannot back in your file unless the information service certifies it is comprehensive and accurate. The customer reporting organization also should give you written observe that contains the title, address, and phone number of the info service. The customer reporting firm should send notices of any correction to your report was received by anyone who before half a year, if you request. You&quot;ll have a corrected copy of your report sent to a copy was received by anyone who in the past two years for employment purposes. <br><br>You are able to ask that a record of the dispute be involved in your document and in future stories, if your dispute is resolved by an investigation doesnt with the consumer reporting company. The consumer reporting company can be also asked by you to offer your record to everyone who received a copy of your report in the recent times. It is possible to expect you&quot;ll pay a payment for this service. <br><br>Second Step <br><br>Tell the collector or other data service, written down, that you dispute an item. Make sure you include copies (PERHAPS not originals) of documents that support your position. Several providers specify an address for conflicts. It should add a notice of one&quot;s argument, if the service reports the item to a consumer reporting company. To compare more, we know people check out: [http://avqp.info/blogs/should-you-have-an-for-a-2/ open in a new browser]. And if you&quot;re correct that&quot;s, if the information is located to be inaccurate it may not be reported by the information provider again..<br><br>When you have virtually any concerns concerning exactly where and also tips on how to utilize [http://vulgardairy5195.webgarden.com health insurance plans], you'll be able to call us in the internet site.
<ref name=Webb76>
{{Cite journal
  | last = Webb
  | first = D.J.  
  | title = A Model of Continental-shelf Resonances
  | journal = Deep-Sea Research
  | volume = 25
  | pages = 1–15
  | year = 1976
}}</ref>
and on the N.W. Australian continental shelf.
 
The speed of long [[waves]] in the ocean is given, to a good approximation, by <math>\scriptstyle\sqrt{gh}</math>, where ''g'' is the acceleration of gravity and ''h'' is the depth of the ocean
<ref name=Segar07>
{{Cite book
  | last = Segar
  | first = D.A.
  | title = Introduction to Ocean Science
  | publisher = W.W. Norton
  | year = 2007
  | location = New York
  | pages = 581+
}}</ref>
<ref name=Knauss97>
{{Cite book
  | last = Knauss
  | first = J.A.
  | title = Introduction to Physical Oceanography
  | publisher = Waveland Press
  | year = 1997
  | location = Long Grove, USA
  | pages = 309
}}</ref>
.<ref name=Defant61>
{{Cite book
  | last = Defant
  | first = A.
  | title = Introduction to Physical Oceanography, Vol. II
  | publisher = [[Pergamon Press]]
  | year = 1961
  | location = Oxford
  | pages = 598
}}</ref>
For a typical continental shelf with a depth of 100 m, the speed is approximately 30&nbsp;m/s. So if the tidal period is 12 hours, a quarter wavelength shelf will have a width of about 300&nbsp;km.
 
With a narrower shelf, there is still a resonance but it has less effect at tidal frequencies.  However the effect is still enough to partly explain why tides along a coast lying behind a continental shelf are often higher than at offshore islands in the deep ocean.  The strong tidal currents associated with resonances also mean that the resonant regions are the areas where most tidal energy is dissipated.
 
In the deep ocean, where the depth is typically 4000 m, the speed of long waves increases to approximately 200&nbsp;m/s.  The difference in speed, when compared to the shelf, is responsible for the reflections at the continental shelf edge. Away from resonance this can stop tidal energy moving onto the shelf.  However near a resonant frequency the phase relationships between the wave on the shelf and in the deep ocean can have the effect of drawing energy onto the shelf.
 
The increased speed of long waves in the deep ocean means that the tidal wavelength there is of order 10,000&nbsp;km. As the ocean basins have a similar size, they also have the potential of being resonant
<ref name=Platzman81>
{{Cite journal
  | last = Platzman
  | first = G.W.
  | coauthors = Curtis, G.A., Hansen, K.S., Slater, R.D.
  | title = Normal Modes of the World ocean. Part II: Description of Modes in the Period Range 8 to 80 Hours
  | journal = [[Journal of Physical Oceanography]]
  | volume = 11
  | issue = 5
  | pages = 579–603
  | year = 1981
|bibcode = 1981JPO....11..579P |doi = 10.1175/1520-0485(1981)011<0579:NMOTWO>2.0.CO;2 }}</ref>
.<ref name=Webb73>
{{Cite journal
  | last = Webb
  | first = D.J.
  | title = Tidal Resonance in the Coral Sea
  | journal = [[Nature (journal)|Nature]]
  | volume = 243
  | issue = 5409
  | pages = 511
  | year = 1973
|bibcode = 1973Natur.243..511W |doi = 10.1038/243511a0 }}</ref> 
In practice deep ocean resonances are difficult to observe, probably because the deep ocean loses tidal energy too rapidly to the resonant shelves.
 
==Tidal locking==
The above concept of tidal resonance differs from another sort of [[resonance]] resulting from tides, called [[tidal locking]], which causes a [[moon]]'s rotational period to coincide with the period of its revolution around the planet that it orbits, so that one side of the moon always faces the planet.
 
==See also==
* [[Seiche]]
* [[Severn Barrage]] (proposed for the Bristol Channel).
* [[Standing wave]]
* [[Cavity resonator]]
 
==References==
 
<references />
 
{{physical oceanography}}
 
{{DEFAULTSORT:Tidal Resonance}}
[[Category:Physical oceanography]]
[[Category:Tides]]

Latest revision as of 02:46, 4 August 2014


You can challenge problems or obsolete items for free. Underneath the Federal Credit Reporting Act (FCRA), the consumer reporting company and the information service (that"s, anyone, company, or organization that provides information about you to a reporting company) have the effect of correcting inaccurate or incomplete information in your statement. To make the most of all your rights under this law, contact the data service and the consumer reporting organization.

Step One

Tell the consumer reporting business, on paper, what information you imagine is incorrect. Include copies (MAYBE not originals) of files that support your position. As well as giving your complete name and address, your letter should request that it be eliminated or corrected, state the important points and explain why you dispute the info, and clearly identify each object in your report you dispute. You might want to enclose a copy of one"s statement with the items involved circled. Send your letter by certified mail, return receipt requested, so you can record what the customer reporting business received. Visiting link possibly provides tips you should give to your mother. Keep copies of your dispute letter and enclosures.

Unless they consider carefully your challenge careless client reporting companies must examine the things in question usually within 30 days. Home Page is a surprising library for new resources about the meaning behind this concept. Additionally they should forward all the relevant information you give about the inaccuracy to the information that was provided by the organization. It should investigate, review the appropriate information, and report the results back to the consumer reporting company, after the information provider receives notice of an argument from the consumer reporting company. so they can correct the information in your report if the information service sees the information is incorrect, it should notify all three nationwide consumer reporting companies.

The consumer reporting company must offer you a free copy of your statement and the results in writing if the dispute results in a change, when the investigation is complete. If a product is changed or deleted, the disputed information is put by the consumer reporting company cannot back in your file unless the information service certifies it is comprehensive and accurate. The customer reporting organization also should give you written observe that contains the title, address, and phone number of the info service. The customer reporting firm should send notices of any correction to your report was received by anyone who before half a year, if you request. You"ll have a corrected copy of your report sent to a copy was received by anyone who in the past two years for employment purposes.

You are able to ask that a record of the dispute be involved in your document and in future stories, if your dispute is resolved by an investigation doesnt with the consumer reporting company. The consumer reporting company can be also asked by you to offer your record to everyone who received a copy of your report in the recent times. It is possible to expect you"ll pay a payment for this service.

Second Step

Tell the collector or other data service, written down, that you dispute an item. Make sure you include copies (PERHAPS not originals) of documents that support your position. Several providers specify an address for conflicts. It should add a notice of one"s argument, if the service reports the item to a consumer reporting company. To compare more, we know people check out: open in a new browser. And if you"re correct that"s, if the information is located to be inaccurate it may not be reported by the information provider again..

When you have virtually any concerns concerning exactly where and also tips on how to utilize health insurance plans, you'll be able to call us in the internet site.

Retrieved from "https://en.formulasearchengine.com/index.php?title=Baryonic_dark_matter&oldid=227342"