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Topic: Tidal resonance

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	Tidal force - Wikipedia, the free encyclopedia
		The tidal force is a secondary effect of the force of gravity and is responsible for the tides.
		The tidal force within the body tends to distort its shape without altering its volume; supposing it was initially a sphere, the tidal force will tend to distort it into an ellipsoid, with two bulges, pointing towards and away from the other body.
		Tidal forces, including the additional term explained in the next section, are also responsible for the oceanic tides, where the reference body is the Earth with the water in its oceans, and the attracting bodies are the Moon and the Sun.
	en.wikipedia.org /wiki/Tidal_force (513 words)

	Resonance (Site not responding. Last check: 2007-11-07)
		Examples are the acoustic resonances of musical instruments, the tidal resonance of the Bay of Fundy, orbital resonance as exemplified by some of the Jovian moonss, the resonance of the basilar membrane in the biological transduction of auditory input, and resonance in electronic circuits.
		In an electrical circuit, resonance occurs at a particular frequency when the inductive reactance and the capacitive reactance are of equal magnitude, causing electrical energy to oscillate between the magnetic field of the inductor and the electric field of the capacitor.
		Resonance is an important consideration for instrument builders as most acoustic instruments utilize resonators, such as the strings and body of a violin, the length of tube in a flute, and the shape of a drum membrane.
	www.sciencedaily.com /encyclopedia/resonance (1241 words)

	Science Fair Projects - Resonance
		Examples are the acoustic resonances of musical instruments, the tidal resonance of the Bay of Fundy, orbital resonance as exemplified by some of the Jovian moons, the resonance of the basilar membrane in the biological transduction of auditory input, and resonance in electronic circuits.
		Resonance is used for tuning and filtering, because resonance occurs at a particular frequency for given values of inductance and capacitance.
		Resonance is an important consideration for instrument builders as most acoustic instruments use resonators, such as the strings and body of a violin, the length of tube in a flute, and the shape of a drum membrane.
	www.all-science-fair-projects.com /science_fair_projects_encyclopedia/Resonate (1598 words)

	Tide - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-11-07)
		Tidal lag and the transfer of momentum between sea and land causes the Earth's rotation to slow down and the Moon to be moved further away in a process known as tidal acceleration.
		Tidal heights are also very important; for example many rivers and harbours have a shallow "bar" at the entrance which will prevent boats with significant draught from entering at certain states of the tide.
		An arrow on the tidal chart indicates direction and two numbers are given: average flow (usually in knots) for spring tides and neap tides respectively.
	www.eastcleveland.us /project/wikipedia/index.php/Tide (2617 words)

	Encyclopedia: Tidal locking (Site not responding. Last check: 2007-11-07)
		The original reason astronomers thought it was tidally locked was because whenever Mercury was best placed for observation, it was always at the same point in its 3:2 resonance, so showing the same face, which would be also the case if it was totally locked.
		More subtly, the planet Venus is tidally locked with the planet Earth, so that whenever the two are at their closest approach to each other in their orbits, Venus always has the same face towards Earth.
		Close binary stars throughout the universe are expected to be tidally locked with each other, and extrasolar planets that have been found to orbit their primaries extremely closely are also thought to be tidally locked to them.
	www.nationmaster.com /encyclopedia/tidal-locking (1462 words)

	Tidal Power (Site not responding. Last check: 2007-11-07)
		Tidal power is a means of electrical generation that uses the difference in height (or head) between high and low tides.
		Tidal power is reliably predictable (unlike wind energy and solar power) and renewable, tapping the virtually infinite amount of the earth's rotational energy.
		The efficiency of tidal power generation largely depends on the amplitude of the tidal swell, which can be up to 10m (33 feet) where the periodic tidal waves funnel into rivers and fiords.
	www.wikiverse.org /tidal-power (341 words)

	OceanLink: Lecture Outlines for Chapter 8 (Site not responding. Last check: 2007-11-07)
		Tidal period is the time between consecutive high or low tides and varies between 12 hrs 25 min to 24 hrs 50 min.
		Tidal range is also altered by the shape of a basin and sea floor configuration.
		Latitude of the tidal bulges is determined by the declination, the angle between Earth’s axis and the lunar and solar orbital plane.
	www.jbpub.com /OceanLink/lectureoutlines.cfm?chapter=8 (814 words)

	Tidal force (Site not responding. Last check: 2007-11-07)
		Tidal force is a secondary effect of the of gravity.
		Tidal effects become particularly pronounced near small of high mass such as neutron stars or fl holes.
		Tidal forces are also responsible for oceanic tides where the large body is the in Earth 's oceans and the attracting bodies are Moon and the Sun.
	www.freeglossary.com /Tidal_force (329 words)

	Tidal force
		This tends to distort the shape of the large body without altering its volume; supposing it were initially a sphere, the tidal force will tend to distort it into an ellipsoid, with two bulges, pointing towards and away from the other body.
		An easy way to understand the way the tidal force causes the bulge at both sides of the object is to keep the centrifugal force involved in mind.
		But, and here the tidal aspect of the force comes in, they are in equilibrium for the bodies as a whole.
	pedia.newsfilter.co.uk /wikipedia/t/ti/tidal_force.html (425 words)

	wikien.info: Main_Page (Site not responding. Last check: 2007-11-07)
		Tidal power is a means of electricity generation achieved by capturing the energy contained in moving water mass due to tides.
		Tidal power is classified as a renewable energy source, because tides are caused by the orbital mechanics of the solar system and are considered inexhaustible within a human timeframe.
		The efficiency of tidal power generation largely depends on the amplitude of the tidal swell, which can be up to 10 m (33 ft) where the periodic tidal waves funnel into rivers and fiords.
	www.hostingciamca.com /index.php?title=Tidal_power (1908 words)

	Tidal power (Site not responding. Last check: 2007-11-07)
		Tidal power is a means of electricalgeneration that uses the difference in height (or head) between high and low tides.
		Tidal power is reliably predictable (unlike windenergy and solar power) and renewable, tapping the virtually infinite amount of the earth 's rotational energy.
		The efficiency of tidal power generation largely depends on the amplitude ofthe tidal swell, which can be up to 10m (33 feet) where the periodic tidal waves funnel into rivers and fiords.
	www.therfcc.org /tidal-power-133685.html (189 words)

	Tides in shallow seas
		The resonance frequencies depend on the dimensions of the vessel; the larger (wider or deeper) the vessel, the longer the resonance periods.
		This modifies the resonance frequencies of the basins, but the principle remains: The closeness of the frequency of the tide-generating force to one of the resonance frequencies determines the amplitude of the tidal wave which is generated in the basin.
		Tidal currents and elevation are thus in phase in the shallow part but out of phase, by a degree determined by the wave's reflection coefficient (Fig.
	gyre.umeoce.maine.edu /physicalocean/Tomczak/ShelfCoast/notes/chapter05.html (3648 words)

	wikien.info: Main_Page (Site not responding. Last check: 2007-11-07)
		Oceanographers attribute it to tidal resonance resulting from a coincidence of timing: the time it takes a large wave to go from the mouth of the bay to the opposite end and back is the same as the time from one high tide to the next.
		Tidal experts note that Leaf Basin is consistently higher on average tides than Minas Basin, however the highest recorded tidal ranges ever measured are at Burntcoat Head, and result from spring tides measured at the peak of the tidal cycle every 18 years.
		The once-famous tidal bores on the Petitcodiac and Avon rivers have been severely disrupted as a result of causeway construction in the 1960s-1970s which have caused excessive siltation.
	www.hostingciamca.com /index.php?title=Bay_of_Fundy (1292 words)

	PERCY SEYMOUR
		When the tidal tug of a planet sits on a given wave crest traveling around the magnetic canals, it causes the wave to grow in size, until eventually it erupts on the Sunís surface in the form of a bridge, or prominence.
		An example of resonance is when an opera singer shatters a wine glass by matching the frequency in her voice with the natural frequency of the glass.
		Seymour's theory applies magneto tidal resonance to planetary tides affecting solar activity beneath the surface of the Sun, and to planets affecting the Earth's magnetosphere.
	www.tmgnow.com /repository/solar/percyseymour1.html (6777 words)

	Encyclopedia: Tidal force (Site not responding. Last check: 2007-11-07)
		According to the law of universal gravitation, the attractive force between two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between them.
		Cross section of a neutron star A neutron star is a type of degenerate star composed mostly of densely packed neutrons, generally about 25 km in diameter and as massive as an average star.
		Tide In oceanography, tidal resonance is a phenomenon perhaps best exemplified in the Bay of Fundy.
	www.nationmaster.com /encyclopedia/Tidal-force (1226 words)

	Tidal resonance (Site not responding. Last check: 2007-11-07)
		The time it takes for a large wave to travel from themouth of the bay to the opposite end, then reflect and travel back to the mouth of the bay, coincidentally matches the time fromone high tide to the next.
		The result of this coincidence of timing is that the repeatingwave is reinforced by the tidal rhythm, and consequently the world's highest tides are found in that bay.
		This concept of tidal resonance differs from another sort of resonance resulting from tides, called tidal locking, which causes a moon'srotational period to coincide with the period of its revolution around the planet that it orbits, so that one side of the moonalways faces the planet.
	www.therfcc.org /tidal-resonance-20448.html (146 words)

	Abstracts of 1996 publications
		Abstract: Ancient tidal periods extracted from the geologic record are useful to constrain and calibrate theoretical models of the evolution of the earth-moon system.
		Tidal cyclicities in the formation occur with a variety of periodicities: 1) daily (semidiurnal to diurnal), 2) semi-monthly (neap-spring) cycles, 3) monthly cycles, and 4) longer term semi-annual to annual cycles.
		Abstract: Cyclic tidal rhythmites are small-scale (mm to cm) sedimentary features consisting of: (1) lamination of mud deposited during the still-stands at high and low tide, alternating with (2) coarser silt and sand deposited between flood and ebb tides, when higher flow rates where encountered.
	www-personal.ksu.edu /~aarcher/abs96.htm (2684 words)

	Tidal resonance (Site not responding. Last check: 2007-11-07)
		The Physics of IO Report including sections about tidal heating and orbital resonance, plasma torus, magnetic field, current flow and Jupiter's aurora.
		Energy from land tidal force The tidal activity in land is much smaller than that of in the sea because of its less flexibility and high density.
		Tidal Electric, Inc. Technical discussion of tidal power generation, the business environment, and the identification of potential sites worldwide.
	www.serebella.com /encyclopedia/article-Tidal_resonance.html (446 words)

	Tidal locking (Site not responding. Last check: 2007-11-07)
		The rotation of the tidal bulge out alignment with the body that caused it in a small but significant force acting slow the rotation of the first body to the second.
		Almost all moons in the solar system are tidally locked with their primaries they orbit very closely and tidal force rapidly with decreasing distance.
		More subtly planet Venus is tidally locked with the planet Earth so that whenever the two are their closest approach to each other in orbits Venus always has the same face Earth.
	www.freeglossary.com /Tidal_locking (1023 words)

	The Oceanic Tides – Section 7 (of 8)
		If the natural period of the oscillatory mode that is excited by the tidal forces is longer than the principal driving period (12 hours for sun-induced tides and 12 hours 25 minutes for moon-induced tides), both forced oscillations (standing waves) occur almost in the opposite phase with respect to the driving forces.
		Therefore the bulges of the tidal wave are aligned almost perpendicularly to the earth-moon (or earth-sun) line, and the flow occurs about the time when the moon (or the sun) is at the horizon.
		Conditions of resonance between the tide-generating forces and the natural oscillations of the ocean would be fulfilled if the driving and natural periods were equal.
	www.ifmo.ru /butikov/Projects/Tides7.html (444 words)

	Rings and Resonances
		A tidal rotation lock is the simplest kind of resonance.
		Tidal forces result when a celestial body exerts a stronger gravitational pull on the near side of another body than the far side.
		In contrast to the gaps in the asteroid belt at 1/2 and 1/3 the period of Jupiter, there is a cluster of asteroids orbiting with 3/2 Jupiter's period and a smaller cluster at 4/3.
	www.stormpages.com /swadhwa/complanet/cplecture11.htm (2016 words)

	Case 3. Tidal resonance in a semi-enclosed rectangular channel (Site not responding. Last check: 2007-11-07)
		Specifying a periodic tidal forcing with amplitude of A at the mouth of the channel, i.e.,
		It is clear that the numerical method used in ECOM-si fails to simulate the tidal wave under near-resonance condition in the shallow water, even though it could always keep numerical computations stable.
		FVCOM is solved numerically using an integrated form of the momentum equations with an approach of flux estimation at second-order accuracy (Chen et al., 2003).
	codfish.smast.umassd.edu /MValidation/Case3.html (902 words)

	Why does Venus rotate backwards from the other planets? (Site not responding. Last check: 2007-11-07)
		This is all due to the influence of the Moon's tidal attraction of the Earth.
		In the case of Venus, however, the gentle gravitational forces it may receive over billions of years to place it in a 3:2 resonance with the Earth don't seem to be strong enough to tip the entire planet over to make its rotation retrograde.
		The tidal action of the Earth on Venus, acting steadily over billions of years, then established the 3:2 spin-orbit resonance.
	www.astronomycafe.net /qadir/q50.html (737 words)

	Astrology: An Interview with Dr. Percy Seymour by Bronwyn Elko
		I'm not saying, "This is the Truth." In trying to clarify basic principles to explain the salient features of Gauquelin's work and the solar cycle, we've developed the principles of resonant coupling between the tides of the planets and the evolving magnetic field of the Sun.
		In Seymourís theory, a key effect of tidal tugs is how the outer planets tugging on the common center of mass of the solar system cause the reversal of the Sun's magnetic field.
		Magneto tidal resonance - Seymour's new term to describe resonance phenomena connected with the tidal effects of the planets.
	cura.free.fr /decem/09seym.html (7375 words)

	Tidal resonance - Encyclopedia, History, Geography and Biography (Site not responding. Last check: 2007-11-07)
		In oceanography, tidal resonance is a phenomenon perhaps best exemplified in the Bay of Fundy.
		The time it takes for a large wave to travel from the mouth of the bay to the opposite end, then reflect and travel back to the mouth of the bay, coincidentally matches the time from one high tide to the next.
		The article about Tidal resonance contains information related to Tidal resonance and See also.
	www.arikah.com /encyclopedia/Tidal_resonance (181 words)

	Tidal power - InfoSearchPoint.com (Site not responding. Last check: 2007-11-07)
		Tidal power is predictable (unlike wind energy and solar power) and renewable, tapping the virtually infinite amount of the earth's rotational energy.
		The efficiency of tidal power generation largely depends on the amplitude of the tidal swell, which can be up to 10m where the periodic tidal waves funnel into rivers and fiords.
		Amplitudes of up to 17m occur for example in the Bay of Fundy, where tidal resonance amplifies the tidal waves.
	www.infosearchpoint.com /display/Tidal_power (147 words)

	Resonance
		Examples are the acoustic resonances of musical instruments, the tidal resonance of the Bay of Fundy, orbital resonance as exemplified by some of the Jovian moonss, and resonance in electronic circuits.
		An improperly constructed bridge, like the Tacoma Narrows Bridge (Galloping Gertie), can be destroyed by its resonance; that is why soldiers are trained not to march in lockstep across a bridge, but rather in breakstep.
		While resonance is an important consideration for instrument builders as most acoustic instruments utilize resonators, such as the body of a violin, composers have begun to make resonance the subject of compositions.
	www.fact-index.com /r/re/resonance.html (382 words)

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