NDLI: High frequency radar measurements of friction velocity in the marine boundary layer

Content Provider	IEEE Xplore Digital Library
Author	Meadows, L.A. Jacobs, S.J. Vesecky, J.F.
Copyright Year	2003
Description	Author affiliation: Michigan Univ., Ann Arbor, MI, USA (Meadows, L.A.; Jacobs, S.J.)
Abstract	This work uses the hydrodynamic theory of the turbulent boundary layer to interpret High Frequency (HF) radar data and to address the potential of HF radar for determination of the friction velocity in the water over a broad spatial region. Recent advances in HF radar instrumentation have resulted in the development of a radar capable of detecting small changes in surface wave phase velocities as a result of an underlying current. The development of a multi-frequency radar system extends this capability to the determination of the vertical distribution of the flow in the water column, or current shear. In this work, the Levenberg-Marquardt method of nonlinear least squares is used to determine the near surface current profile based on a theoretical model of the effect of the current on the phase velocity of a surface gravity wave. The results of this analysis are compared to in situ measurements of wind velocity and measurement-based calculations of friction velocity. The results show that estimates of the friction velocity compare well with in situ measurements under moderate wind conditions.
Sponsorship	Current Meas. Technol. Committee of the Oceanic Eng. Soc. IEEE
Starting Page	83
Ending Page	87
File Size	381314
Page Count	5
File Format	PDF
ISBN	078037813X
DOI	10.1109/CCM.2003.1194289
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Radar measurements Friction Hafnium Surface waves Velocity measurement Radar theory Hydrodynamics Instruments Radar detection
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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