Marine current power the rotation of the earth. The sun acts as the primary driving force, causing winds and temperature differences. Because there are only small fluctuations in current speed and stream location with minimal changes in direction, ocean currents may be suitable locations for deploying energy extraction devices such as turbines. Other effects such as regional differences in temperature and salinity and the Coriolis effect due to the rotation of the earth are also major influences. The kinetic energy of marine currents can be converted in much the same way that a wind turbine extracts energy from the wind, using various types
The Situations and Names of Winds in the north, and proceeds clockwise. In particular, the scheme presented in "Situations" is very similar to, but distinct from, the one given by Aristotle in his authentic text, "Meteorology". A significant difference between the two texts is that "Situations" introduces the names Orthonotus and Leuconotus for the two southerly winds not treated in "Meteorology". For another treatment of the text, see the "Theophrastus" section in the classical compass winds article, listed below. The Situations and Names of Winds The Situations and Names of Winds (; ) is a spurious fragment traditionally attributed to Aristotle. The brief text lists winds