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Significant Wave Height in Relation to Inertial Currents Induced by Strong Typhoon Winds
EP21597
Significant Wave Height in Relation to Inertial Currents Induced by Strong Typhoon Winds
Submitted on 09 Mar 2014

Astrid Werkmeister and Hans C. Graber
Rosenstiel School of Marine and Atmospheric Science, University of Miami
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Poster Abstract
Inertial currents are wind induced and dominated by the Coriolis force. Their propagation is characterized by nearly circular anti-cyclonic horizontal movements. It is essential to understand inertial currents since they are among the most energetic currents in the oceans. Fact is, most ocean current models do not include these currents. This deficiency increases errors in wave height and current predictions. We are reporting on inertial currents in a Lagrangian frame of reference on the open ocean from a drifting buoy. From the buoy’s trajectory we can follow the path of the inertial current and examine its interaction with - and its influence on - the surface wave field. This work is inspired by Gemmrich and Garret (2012) who performed similar analysis for moorings.

Gemmrich J. and Garrett C. (2012), The Signature of Inertial and Tidal Currents in Offshore Wave Records, J. Phys. Oceanogr., 42, 10511056.
Graber, C. H., Donelan, M. A., Drennan, W. M., Van Leer, J. C. and Peters, D. B (2000), ASIS - A New Air-Sea Interaction Spar Buoy: Design and Performance at Sea, Journal of Atmospheric and Oceanic Technology, 17, 708- 720.
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