During Sunday (28), while workers took turns to remove the sand that cluttered the container carrier, there was a natural phenomenon called “sizígia tide” – when the cosmic alignment of the Earth, the Sun and the Moon occurs. However, as does the Moon have the power to influence the tides of our planet’s oceans? There is a scientific explanation.
Formation of the tides
(Source: Maxar Technologies)
To understand what happened to the Ever Given ship, it is necessary to know more about the movement of the tides. Both the low and the high are caused by the Moon, whose gravitational attraction generates something called tidal force. This phenomenon causes the Earth and its water to project on the sides closer and farther away from the Moon.
As the planet spins, specific regions will experience these effects at different times. Therefore, the movement of high tide always occurs at the ends of the world facing the Moon, and the reverse is true for low tides. This cycle usually occurs almost every day in all coastal regions of the Earth.
In the case of the “sizígia tide”, the gravitational force of our satellite joins the solar gravitational, and the movement of the seas becomes even greater. It was through this huge increase in the level of the oceans that Ever Given was able to return to its route through the Mediterranean Sea.
If the gravitational force of the Moon pulls the oceans towards you, how do high tides also appear on the most distant face of the Earth? Although the concept seems strange, everything is solved by means of a mathematical equation. Unlike the gravitational pull, the tidal pull is an effect from differences in gravity on the Earth’s surface.
To arrive at the strength of the tide, we must subtract the average gravitational attraction on Earth from the gravitational attraction at each location on the planet. The result shows a stretch in the extremities directed towards the Moon and a crush in the neutral faces, forming the high and low tides.
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