Spring tides occurs when the sun, moon
and earth are aligned on the same plane. The characteristics of spring
tides include high fluctuations of water level between low and high tides.
That is to say that water levels during high tides are higher than normal,
for example 3.0m and a very low tide such as 0.3m. The length of time
between tides are about the same each day and spring tides have to reach
a higher water level or recede to a very low level at the same amount
of time as any other tides. So this means that the rate at which water
level rise or fall must increase. This is why you get strong current during
spring tides.
