January 1st 2018 Effects of the Super Moon on Lymington and surrounding areas in the forest.

Astronomers use the term perigee to describe the moon’s closest point to Earth, from Greek words peri meaning “near” and gee meaning “Earth”. Because the moon has an elliptical orbit, one side – called the perigee is about 48,280 km (30,000 miles) closer to Earth than the other side (the apogee).

When the sun, the moon, and Earth line up as the moon orbits Earth, that’s known as syzygy. When this Earth-Moon-Sun system occurs with the perigee side of the moon facing us, and the moon happens to be on the opposite side of Earth from the sun, we get what’s called a perigee-syzygy causing the moon to appear bigger and brighter than usual, known as a supermoon – or more technically, a perigee moon.

Tides work through a differential gravitational effect, with the force of gravity exerted on the far side of Earth, as seen from the moon is slightly less than the force of gravity exerted on the part of the Earth directly beneath it.  Because of the additional distance of approximately 8,000 miles from one side of Earth to the other, the force of gravity weakens rapidly with increasing distance, producing this differential.  So our planet is stretched slightly, along a line between the Earth and moon, the body of the Earth is fairly rigid, so it does not stretch much, but the liquid oceans are much more easily moved; causing tidal bulges.  This differential is increased by the moon being at it’s closest point, producing much higher Perigean tides.

Look out for the Super ‘Blue’ Moon January 31 2018, last chance until  2019!

 

 

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