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Ocean current. Distinctive white lines trace the flow of surface currents around the world. An ocean current is a continuous, directed movement of seawater generated by a number of forces acting upon the water, including wind, the Coriolis effect, breaking waves, cabbeling, and temperature and salinity differences. [1]
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19 de out. de 2023 · Colder, denser air from above then sinks, filling the gap left by the hot air. The equator receives the lion’s share of sunlight and, as a result, air rises and moves out from the equator toward the poles. Then cooler air from midlatitudes moves into the equatorial region to be warmed, creating a cell of air circulation known as the Hadley cell.
The Coriolis Effect bends the direction of surface currents. The third major factor that determines the direction of surface currents is the shape of ocean basins (Figure 14.15). When a surface current collides with land, it changes the direction of the currents. Imagine pushing the water in a bathtub towards the end of the tub.
Sea breezes blow from the cooler ocean over the warmer land in summer (Figure below). Where is the high pressure zone and where is the low pressure zone? Sea breezes blow at about 10 to 20 km (6 to 12 miles) per hour and lower air temperature much as 5 to 10°C (9 to 18°F).
1 de ago. de 2011 · Large-scale surface ocean currents are driven by global wind systems that are fueled by energy from the sun. These currents transfer heat from the tropics to the polar regions, influencing local and global climate. The warm Gulf Stream originating in the tropical Caribbean, for instance, carries about 150 times more water than the Amazon River.
