Current Retroflection from a Slanted Coastline
by Volodymyr Zharkov (9783639123463)

Current Retroflection from a Slanted Coastline
Volodymyr Zharkov
Release Date: 01 February 2009
Format: Paperback
Pages: 76
Category: Earth Sciences
Publisher: VDM Verlag
ISBN: 9783639123463
ISBN-10: 3639123468

Recent proxies suggest that, at the end of the last glacial, there was a significant increase in the injection of Agulhas rings into the South Atlantic. This event brought about a dramatic increase in the salt influx helping to re-start the Atlantic meridional overturning circulation. Until now the mechanism through which such large variation in ring production occurs has not been clear. In this book, two semi-analytical non-linear models of current retroflection from non-zonal coastline on the -plane are developed to explain this phenomenon. The critical value of the coastline slant is defined, which implies restricted possibilities for ring detachment from the retroflection area in the 'supercritical' range of . In the case of Agulhas region, rings can be injected only if the retroflection occurs beyond specific latitude where the angle is critical. This analysis should help in understanding the regimes of ring shedding by retroflected currents and should be useful for anyone studying the dynamics of currents, meridional overturning cell in the Atlantic and climate dynamics.

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