Reflect the physical state of water hot. To ° c said. World Ocean's temperature changes in the -2 ~ 30 ° c, where the average water temperature exceeds 20 ° c in the sea more than half of the total ocean area. A day, month, year, years of cyclical and irregular changes. Depends on ocean heat balance of payments and the time change.
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No. 2
Seawater temperature is a reflection of a physical quantity of seawater thermal conditions. Temperature changes in the world ocean is generally between -2 ℃ -30 ℃, where the average water temperature exceeds 20 ℃ region accounted for more than half of the entire marine area. There are cyclical changes in sea temperature and irregular variations days, months, years, years, etc., which mainly depends on ocean heat balance of payments situation and the time change. By direct observations show: Day seawater temperature changes very little change in water depths ranging from 0-30 meters, while the annual change in water depth of about 350 meters to reach the place. At a depth of about 350 meters, there is a heated floor. However, with increasing depth, water temperature decreased (per depth of 1000 meters, a decrease of approximately 1 ° -2 ℃), at a depth of 3000-4000 meters, the temperature reaches 2 ° - 1 ℃. Oceanographic conditions seawater temperature is the most important factor, often as a study of water masses in nature, describes the basic indicators of water mass movement. Seawater temperature distribution and temporal variation is not only an important part of oceanography and meteorology, navigation, fishing, and the sound of water and other disciplines are also important.