MEA 200 Lecture Notes - Lecture 14: Estuary, Coastal Management, Arctic Norway
30 Mar 2017
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Document Summary
Rise and fall of sea level in response to gravitational effect by moon, sun, and earth"s spin. Gravitational forces between the earth & moon and earth & sun. The alignment of the earth, moon and sun determines the. The alignment of the moon, earth and sun. Lunar month - moon revolves around the earth every 29. 5 days. Solar year - earth revolves around the sun every 365. 25 days. When the earth, moon and sun are aligned, the earth has a high or spring tide (full or new moon) When the earth, moon, and sun are at right angles, the earth has a minimal tide, or neap tide (1st or 3rd quarter) Tidal period time between high tides . Flood tide water moves toward shore . Ebb tide water moves away from shore. Tidal bulges are fixed relative to the sun"s and moon"s positions. Water rushes up a bay or river with incoming tide.
