High-resolution GNSS-tracked drifter for studying surface dispersion in shallow water

Suara, Kabir, Wang, Charles, Feng, Yanming, Brown, Richard J., Chanson, Hubert and Borgas, Michel (2015) High-resolution GNSS-tracked drifter for studying surface dispersion in shallow water. Journal of Atmospheric and Oceanic Technology, 32 3: 579-590. doi:10.1175/JTECH-D-14-00127.1

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Author Suara, Kabir
Wang, Charles
Feng, Yanming
Brown, Richard J.
Chanson, Hubert
Borgas, Michel
Title High-resolution GNSS-tracked drifter for studying surface dispersion in shallow water
Journal name Journal of Atmospheric and Oceanic Technology   Check publisher's open access policy
ISSN 0739-0572
1520-0426
Publication date 2015-03-01
Year available 2015
Sub-type Article (original research)
DOI 10.1175/JTECH-D-14-00127.1
Open Access Status File (Publisher version)
Volume 32
Issue 3
Start page 579
End page 590
Total pages 12
Place of publication Boston, MA, United States
Publisher American Meteorological Society
Collection year 2016
Language eng
Abstract The use of Global Navigation Satellite System (GNSS)-tracked Lagrangian drifters allows more realistic quantification of fluid motion and dispersion coefficients than Eulerian techniques because such drifters are analogs of particles that are relevant to flow field characterization and pollutant dispersion. Using the fast-growing real-time kinematic (RTK) positioning technique derived from GNSS, drifters are developed for high-frequency (10 Hz) sampling with position estimates with centimeter accuracy. The drifters are designed with small size and less direct wind drag to follow the subsurface flow that characterizes dispersion in shallow waters. An analysis of position error from stationary observation indicates that the drifter can efficiently resolve motion up to 1 Hz. The result of the field deployments of the drifter in conjunction with acoustic Eulerian devices shows a higher estimate of the drifter streamwise velocities. Single particle statistical analysis of field deployments in a shallow estuarine zone yielded estimates of dispersion coefficients comparable to those of dye tracer studies. The drifters capture the tidal elevation during field studies in a tidal estuary.
Keyword Dispersion
Lagrangian circulation/transport
Data quality control
Global positioning systems (GPS)
Instrumentation/sensors
Field experiments
Eprapah Creek
Subtropical estuary
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes This is a preprint. The full bibliographic details are: SUARA, K., WANG, C., FENG, Y., BROWN, R.J., CHANSON, H., and BORGAS, M. (2015). "High-Resolution GNSS-Tracked Drifter for Studying Surface Dispersion in Shallow Water." Journal of Atmospheric and Oceanic Technology, Volume 32, Issue 3, pp. 579-590 (DOI: 10.1175/JTECH-D-14-00127.1) (ISSN 0739-0572).‎

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2016 Collection
 
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Created: Tue, 24 Mar 2015, 20:01:52 EST by Hubert Chanson on behalf of School of Civil Engineering