shervette lecture TIDES and Coasts fall08 students [Compatibility Mode]

Shervette lecture TIDES and Coasts fall08 students [Compatibility Mode]

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Unformatted text preview: 1 TIDES TIDES Tides are the periodic _____ _______________ that occurs throughout the oceans of the world Knowledge of tides is important to ___________, t t i storm prevention, _________, surfing, beach activities Accurate records are kept at nearly every port in the world First written record is of tides in the Mediterranean by ______________, 450 BC Tides are essentially very long and regular shallow water waves Wavelengths = thousands of kms (half the earths circumference) Wave Heights can be up to 17 m, but average around 2 m Occur with a regular, predictable periodicity Are most noticeable along coastlines because of fixed reference points Tides are measured in tidal height relative to A simple tide gauge a fixed reference point (T idal Datum) Tidal Datum is the zero depth reference which is usually equal to the average depth at low tide (mean low water), and is the water depth usually printed on navigation charts Examples of tidal guage traces Clambank Creek, Goat Island, North Inlet, SC 23 October 2006 - 24 October 2006 33.3333 N, 79.1933 W 10-23 03:08 EDT 0.74 feet Low Tide 10-23 07:27 EDT Sunrise 10-23 08:48 EDT Moonrise 10-23 09:49 EDT 5.50 feet High Tide 10 23 15:45 EDT 0 89 feet Low Tide Clambank Creek, Goat Island, North Inlet, SC 23 October 2006 - 24 October 2006 33.3333 N, 79.1933 W 10-23 03:08 EDT 0.74 feet Low Tide 10-23 07:27 EDT Sunrise 10-23 08:48 EDT Moonrise 10-23 09:49 EDT 5.50 feet High Tide 10 23 15:45 EDT 0 89 fee Low Tide Clambank Creek, Goat Island, North Inlet, SC 23 October 2006 - 24 October 2006 33.3333 N, 79.1933 W 10-23 03:08 EDT 0.74 feet Low Tide 10-23 07:27 EDT Sunrise 10-23 08:48 EDT Moonrise 10-23 09:49 EDT 5.50 feet High Tide 10 23 15:45 EDT 0 89 feet Low Tide Example of a Tide Table 10-23 15:45 EDT 0.89 feet Low Tide 10-23 18:34 EDT Sunset 10-23 19:11 EDT Moonset 10-23 21:53 EDT 4.71 feet High Tide 10-24 03:42 EDT 0.79 feet Low Tide 10-24 07:28 EDT Sunrise 10-24 09:50 EDT Moonrise 10-24 10:23 EDT 5.49 feet High Tide 10-24 16:24 EDT 1.03 feet Low Tide 10-24 18:32 EDT Sunset 10-24 19:48 EDT Moonset 10-24 22:26 EDT 4.58 feet High Tide 10-23 15:45 EDT 0.89 feet Low Tide 10-23 18:34 EDT Sunset 10-23 19:11 EDT Moonset 10-23 21:53 EDT 4.71 feet High Tide 10-24 03:42 EDT 0.79 feet Low Tide 10-24 07:28 EDT Sunrise 10-24 09:50 EDT Moonrise 10-24 10:23 EDT 5.49 feet High Tide 10-24 16:24 EDT 1.03 feet Low Tide 10-24 18:32 EDT Sunset 10-24 19:48 EDT Moonset 10-24 22:26 EDT 4.58 feet High Tide 10-23 15:45 EDT 0.89 feet Low Tide 10-23 18:34 EDT Sunset 10-23 19:11 EDT Moonset 10-23 21:53 EDT 4.71 feet High Tide 10-24 03:42 EDT 0.79 feet Low Tide 10-24 07:28 EDT Sunrise 10-24 09:50 EDT Moonrise 10-24 10:23 EDT 5.49 feet High Tide 10-24 16:24 EDT 1.03 feet Low Tide 10-24 18:32 EDT Sunset 10-24 19:48 EDT Moonset 10-24 22:26 EDT 4.58 feet High Tide Tides and the Forces That Generate Them What are the characteristics and causes of tides?...
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Shervette lecture TIDES and Coasts fall08 students [Compatibility Mode]

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