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tide table

TIDESTidal coefficient

How do tides form? types of tides and influence sport fishing
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TIDESWHAT IS THE TIDAL COEFFICIENT?

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bahía de Fundy y Mont Saint-Michel Tidal range: Bay of Fundy ▲ / Mont Saint-Michel ▼

On the Tide Tables there are tidal coefficients which tell us the amplitude of the tide forecast (difference in height between the consecutive high tides and low tides in any given area).

The highest possible tidal coefficient is 120, corresponding to the greatest high or low tide there can be, excluding meteorological effects. Tidal coefficients are calculated from the following parameters or from the sun and the moon: straight ascension, declination, parallax and the distance between the Earth and the celestial body.

Despite tidal coefficients being the same for the whole planet, they affect the amplitude of the tides in a very different manner, depending on where we are. This variation in amplitude is almost null and void in closed seas, apart from where there is local resonance (e.g. it can be up to 3ft in Venice); it is weak in mid-ocean, but tends to be considerably amplified when extending to the continental coasts.

The greatest tides in the world are produced in the Bay of Fundy, Canada (53 ft) and in the Bay of Mont Saint-Michel, France (50 ft).

The amplitude of the tides varies in space and time.

Saint-Malo Saint-Malo (France)

in space

There are tides of weak intensity (in the areas close to the terrestrial equator, the tides barely reach tens of centimetres). In other places there are tides of high intensity (for example: the French coasts of the Saint-Malo Bay), where they regularly exceed 30 ft.

in time

The coefficient and therefore the amplitude of the tides follow the phases of the moon with slight disparity during waxing and waning moons; and extensive disparity at times of new moon and full moon. The differences in amplitude between low tides and high tides present great contrasts. In Saint-Malo the difference in level between high tide and low tide is reduced to 10 ft in periods of low tides; and goes as high as 40 ft in periods of high tides.



Coeficiente de marea

ANNUAL TABLE TIDAL COEFFICIENT

YEAR 2018

Fishers tend to have ideal values for tidal coefficients depending on each location. We know that large coefficients can produce optimal seabed movements for fishing in some places, but perhaps elsewhere they may drag too much algae and dirt, making fishing impractical.

In the following table find the coefficients of your favorite tides for fishing in the year 2018.

DAY JAN FEB MAR APR MAY JUN
11001021051041041061009786826865
210310310198106106938878746258
3101999388104100837769645551
4959182769691716459544846
5868069628578585249444443
6756956507164464041384345
7645945415751363336364751
8545139384539323338415559
9484739413533353945506570
10474744483234455055617580
11495152563742566367738589
12545761654752697579849396
13606370745864808689939899
14666977806974909497999998
1572748385798497991001009592
1676778788889110010099978985
17787988889496999794908075
18797987859696938985797167
19787783809593837874696360
20757376729086716564605857
21716867628276595557565757
22656258547064515056575960
23605751505853515460636264
24555350535048596466696668
25535458644952697572757072
26565970775763808478807374
27646984917076889181827575
287581961018389939483837575
2987939498949382817473
3097101101102918979777169
311041051021027472
DAY JUL AUG SEP OCT NOV DEC
1676568666257534953576165
2636063605350474763696972
3585657554848505575807578
4545253525155616885908183
5515051536067758393968485
6505255597481899597978585
754576369889510010397958482
86065758110010410510693898078
96974879310710910610485817571
107984981021091071019676716864
118993104106104100918665606056
1296991061059589797254495349
13100101102988275665944404644
141009893886760524637354241
15969282755346403535364243
16888368614136333239434649
17787255503433333648535358
18676245423538404558646368
19585440404247505670757378
20515041445358626880858387
21495047516368737889929194
22515356607378838795969697
23555864688285919497979897
24616472758890959795939593
25676978819293979689858985
26717383849392949181768176
27757685859087878270657267
28777785848479767161586460
29777783807469655956555857
30767578746358545156585657
317371706649505860
[ Coefficient 12 am / Coefficient 12 pm ]
coeficiente bajo
low
coeficiente medio
average
coeficiente alto
high
coeficiente muy alto
very high

Next article: Tide currents
tide table
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