Tides

Tides

1 )why the east cost has one high and one low tide a day but other parts of the world have two per day

The most common type of tide around the world is the semi-diurnal type this consists of two high and two low tides per day . Semi-diurnal tides occur when water is not uniformly raised this may be due to ocean currents , tributary rivers and other out and in flowing systems . This results in water sloshing around , making the tide phases twice per day

The coast off Florida however

, has a diurnal type of tide , having only one low and one high tide per day . Diurnal tides occur when water is relatively trapped , resulting in a uniform movement resonating from the center which follows the lunar phases

2 ) How is it we are experiencing GLOBAL WARMING LA NINA ? I am confused how both can exist at the same time The world 's temperature is increasing due to global warming . La Nisa is brought upon by the abnormal cooling of the pacific Ocean . How can this two phenomena coexist ? The Earth 's temperature is regulated by wind and ocean currents , evenly distributing the Earth 's heat . The increase in the Earth 's temperature is an added strain to this system , implying that the currents need to distribute more heat . In distributing this heat some areas become abnormally cool while other become abnormally hot Whaen the abnormally cool area falls upon the Pacific Ocean , La Nisa then occurs

3 )Is gravity the only cause of a wave change in shape at the shoreline

Gravity plays an important part in determining what shape a wave takes as it approaches the shore . However , strong winds that hit the wave can also mould it , either making it roll , or making its top crumble altogether . Additional , the tide in effect near the shore can define how high a wave is when approaching

Source

Calvert J .B (2003 ) Tidal Observations

Retrieved April 12 2007 from HYPERLINK "http /www .du .edu jcalvert /geol /tides .htm Gulf http /www .du .edu jcalvert /geol /tides .htm Gulf

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