Tsawwassen Centennial Beach Low Tide
1Low tides at the beach are primarily caused by the gravitational forces exerted by the Moon and the Sun on the Earth's oceans. The gravitational pull of these celestial bodies creates a tidal bulge, which results in the rise and fall of ocean levels, causing high and low tides.
The Moon plays a more significant role in creating tides because it is closer to the Earth. The Moon's gravitational force pulls the water towards itself, causing a high tide on the side of the Earth facing the Moon. At the same time, there is another high tide on the side opposite the Moon due to the centrifugal force created by the Earth-Moon system's rotation. These high tides are often referred to as the "lunar bulges."
Conversely, low tides occur in areas between the two high tides. When the water is pulled towards the lunar bulges, it leaves behind regions with reduced water levels, resulting in low tides. Hence, the Moon's position relative to a specific location on Earth determines when low tides occur.
The Sun also contributes to the formation of tides, although to a lesser extent than the Moon. The gravitational force of the Sun causes another tidal bulge, known as the "solar bulge." When the Sun, Moon, and Earth align, during the full moon or new moon phase, their combined gravitational pull results in higher high tides, known as spring tides. Conversely, when the Sun and Moon are at right angles to each other (during the first quarter and third quarter moon phases), their gravitational forces partially cancel each other out, resulting in lower high tides, known as neap tides. Neap tides are associated with less dramatic variations between high and low tides.
Other factors, such as the shape of the coastline, the depth of the ocean, and the geography of the region, can also influence the timing and height of tides at a specific beach location.
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