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Hourly temperature readings over a 69-day period in winter 1973-1974 are used to characterize both diurnal and longer period temperature variations in a shallow seagrass flat along the Texas coast. The average diurnal temperature variation has a range of about 2.4⚬ C and includes 8 h of warming, starting at about 0800, followed by 16 h of relatively slow cooling. Longer term, quasi-periodic temperature variations occur at intervals of 11-13 days in response to frontal passages. Temperature fall between 8⚬ and 14⚬ C in the first 2 days following the frontal passages, before rapid warming begins.
Limnology and Oceanography