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TeachMeFinance.com - explain rotary current, tidal rotary current, tidal The term 'rotary current, tidal' as it applies to the area of coastlines can be defined as ' a tidal current that flows continually with the direction of flow changing through all points of the compass during the tidal period. rotary currents are usually found offshore where the direction of flow is not restricted by any barriers. the tendency for the rotation in direction has its origin in the deflecting force of the earth's rotation and, unless modified by local conditions, the change is clockwise in the northern hemisphere and counterclockwise in the southern hemisphere. the velocity of the current usually varies throughout the tidal cycle, passing through two maxima in approximately opposite directions and two minima with the direction of the current at approximately ninety degrees from the direction at the time of maximum velocity'. Previous 5 Terms: rosella Rossby Waves rostelliform rot rotameter Next 5 Terms: Rotary rig Rotating Pump Rotation rotation rotation About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.