This year in France I had a tide timetable and tried to correlate the difference in tide times from one day to the next by the phase of the moon (and whether the tides were larger or smaller) but could not see the pattern. To start with they were about 30 minutes later each day. 2 weeks later they were more like an hour later each day. Does anyone know why there is this variation?
2006-12-05 07:53:53 · 8 answers · asked by Jon H 1 in Science & Mathematics ➔ Geography
Hi. There are two tides a day, one caused by the increased pull of the Moon's gravity on the side of the Earth facing the Moon and one on the side facing away which results from the decreased gravity. The 'bulges' caused by the gravity effects are stationary and the Earth rotates through them. If the orbit of the Moon was circular and on the same plane as the equator then the tides would be much more uniform. There would still be a difference due to solar gravity. Hope this helps.
2006-12-05 08:40:12 · answer #1 · answered by Cirric 7 · 0⤊ 0⤋
It actually depends on the position of the Moon, the Sun and the particular coastline as the tide also moves along the coast. In the UK the government produces Tide charts for locations along most of the coastline.
The size of the tide and timing changes as the Moon and Sun change relative positions from the Earth and the Earth spins.
2006-12-05 18:24:52 · answer #2 · answered by Rich 2 · 0⤊ 0⤋
The gravitational pull of the moon. Might sound daft but yes the moon too is a mass and the graviational relationship between us and the moon affects tides, and as a consequence the position helps determine tides.
2006-12-07 12:51:36 · answer #3 · answered by Sunil 1 · 0⤊ 0⤋
It's nothing to do with the phases of the moon, it's everything to do with the position of the moon which varies by 30 to 45 minutes every day. In other words throughout the year the moon gradually changes its position each day.
As for the anomilies, remember the world also changes its position daily.
2006-12-05 16:01:17 · answer #4 · answered by tucksie 6 · 0⤊ 0⤋
Look at mean high water highest high water spring tides neap sring tides highest astronomical tides. Could also be due to things like storm surges way out to sea which tide prediction can not take into account. this can affect the time and height of tides.
2006-12-07 02:54:03 · answer #5 · answered by no1drakey 1 · 0⤊ 0⤋
The moon
2006-12-05 17:53:33 · answer #6 · answered by john doe 1 · 0⤊ 0⤋
its controlled by the moon but there seems to be no tides in carribean dont know why that is
2006-12-05 16:21:14 · answer #7 · answered by Anonymous · 0⤊ 0⤋
All depends what position the moon is in.
2006-12-05 15:57:23 · answer #8 · answered by stone 3 · 0⤊ 0⤋