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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 2021

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 2021.

DAY JAN FEB MAR APR MAY JUN
178768683104101847563564948
2757379749792675850464748
3706869648578514543434951
4666360567063414044475456
5626053515549424551555961
6606052544543505659636466
7606257624346616767706869
8646766715157727673767172
9707376806268808378797373
10778083867378858780807373
11838588908286888880797271
12878890908890878678766968
13898888869191848174726663
14878584809089787469656159
15838077728683706662585755
16767267628076615654505453
17686457527166514646445355
18605547426155413742415760
19514738344944343342456367
20444132323834343750557175
21393834373129435061687983
22394042483134576575818689
23424654614046738287939192
245054677454628996971009392
255863818770781021071021039189
266872929786931101111021008783
27778010110410010511110997938076
28848710510510911210610088837167
298991113112948777716359
309191109105797165605652
31908999925552
DAY JUL AUG SEP OCT NOV DEC
1504839383640455277858691
2474638404652606892989599
34647424658647583102106100101
4495050547077899610810910199
55355586382881011051071059692
6586067719296108109101958882
7636575799910110910789827771
8687082841011011039874666661
9727386889996928559535653
10747588889186776848455149
11757587867972605244464950
12757483806558464248525153
13737276725146414356605557
14706867624444465164685962
15676558544651576372756466
16636152515763697477796869
17606052556975798380817172
18606159648085868881817273
19626569758992899080787372
20687180849394908976747170
21757988919493878571686967
22828593939188827865616563
23888993928581746957536058
24909090877671645949465654
25898884806559544943405352
26858275705347433839405252
27797564594136343142455456
28706653473229303250565962
29615642372829354062686670
30524733313339475475817579
314441313262708387
[ 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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