Cross-Shore Internal Waves in Zanpa Coastal Region of Okinawa Island
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 132, Issue 1
Abstract
Comprehensive field observations were made to establish a baseline of the existing tidal current structure and internal wave phenomena in a coastal region. Water temperature distributions at different depths and vertical profiles of horizontal current were examined in detail. Time series of horizontal current and near-bottom temperature fluctuations are explained by internal wave theories following two-layer and continuous density distributions. Study results show the propagation of cross-shore internal waves in an area where bottom topography is characterized by near-critical slope. Near-bottom cold internal current that flowed toward the shore significantly influenced the water temperature distributions in the region. The vertical structure of east-west horizontal current showed that its transmission was consistent with the phase propagation of theoretically calculated internal waves.
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Acknowledgments
The study was supported in part by the Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of JapanMESSC-JP (Research representative: Eizo Nakaza, Project No. 11792023). Thanks are due to the graduate and undergraduate students for their generous cooperation during the field observation. The writers would also like to thank the many others who have been involved in the field observations.
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Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 132 • Issue 1 • January 2006
Pages: 36 - 46
Copyright
© 2005 ASCE.
History
Received: Aug 17, 2004
Accepted: May 4, 2005
Published online: Jan 1, 2006
Published in print: Jan 2006
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