The law of ocean currentsThe reaction of ocean currents was as follows:
1. ** The middle and low-latitude circulation law with the subtropics as the center **: In the tropical and sub-tropical sea areas (middle and low-latitude), the oceanic circulation with the sub-tropical sea area (30°) as the center is formed. The northern hemisphere flows clockwise, with cold currents in the eastern part of the ocean and warm currents in the western part. The southern hemisphere flows counterclockwise, with cold currents in the eastern part of the ocean and warm currents in the western part.
2. ** The mid-high latitude circulation law with the subpolar region as the center **: In the mid-high latitude sea area, an oceanic circulation centered at 60° is formed. The northern hemisphere flows counterclockwise. The eastern part of the ocean is warm and the western part is cold. The mid-high latitude area of the southern hemisphere is surrounded by the west wind.
3. ** The law of the oceanic currents around the Antarctic continent **: Around the Antarctic continent, there is a flow of the west wind and the Antarctic circumpolar circulation.
4. ** Northern Indian Ocean Monsoon Circulation Law **: The Northern Indian Ocean Monsoon Circulation presents the law of adverse winter and smooth summer.
In addition, the ocean currents also had different rules:
1. Wind current law: Wind current is one of the main causes of ocean currents. It is mainly formed by the trade winds and the prevalent winds blowing the seawater all year round. Most of the ocean currents flowing in the east and west direction were wind currents, such as the north-south equator warm current, the north Pacific warm current, the north Atlantic warm current, the western wind drift in the southern hemisphere, and the northern Indian Ocean's monsoonal current.
2. ** Compensating flow law **: Compensating flow is mainly caused by the sea level being lower than other places after the seawater flows away, and the seawater from other places flows to supplement the ocean current. Most of the ocean currents flowing in the north-south direction were related to the compensation effect, such as the cold current in Mexico, the warm current in Japan, and the cold current in the Thousand Islands. There were horizontal and vertical compensation flows. The vertical compensation current was divided into two types: upwelling and downwelling. The upwelling was often formed in the west coast of the continent under the control of the wind belt due to the prevalent off-shore wind, such as the cold current in Mexico, the cold current in Benguela, and the cold current in Canary.
3. ** Law of density flow **: It is formed due to the difference in the density of seawater in two relatively closed sea areas. For example, the density currents on the east and west sides of the Strait of Buffalo were affected by the climate of the Mediterranean Sea. The Mediterranean Sea evaporated vigorously, and there were no large rivers flowing into the surrounding area. The seawater was high in saltiness and density, and the water level was low.
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