Ocean Surface Currents Mapped by Radar

Barrick, D.; Evans, Michael; Weber, B. L.

doi:10.1126/science.198.4313.138

Cited by 450 publications

(88 citation statements)

References 6 publications

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“…Several HF radar systems have emerged over the years, the first of which was CODAR, 8 developed by the National Oceanic and Atmospheric Administration (NOAA). CODAR was designed for compact rapid deployment and uses direction finding techniques to map ocean currents.…”

Section: Hf Radarmentioning

confidence: 99%

“…The second-order backscatter measures wave parameters, the theoretical formulation for which was set out in the 1970s. 7,8 Vigorous testing of HF radar wave measurement techniques has recently included the European Radar Ocean Sensing project (EuroROSE) 9 and testing of the Pisces HF radar. 10 The ADCPs operate by emitting mono-frequency sonar pulses in known directions from a transducer into the water column.…”

Section: Introductionmentioning

confidence: 99%

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A two year comparison between HF radar and ADCP current measurements in Liverpool Bay

Robinson

Wyatt

Howarth

2011

Journal of Operational Oceanography

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Section: Hf Radarmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A two year comparison between HF radar and ADCP current measurements in Liverpool Bay

Robinson

Wyatt

Howarth

2011

Journal of Operational Oceanography

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“…States to measure surface currents [e.g., Barrick et al, 1977] and ocean waves [e.g., Barrick, 1977]. In Japan they have been developed since 1988 by the Okinawa Radio Observatory, Communications Research Laboratory, for application to physical oceanography problems such as detecting "Kyucho" [Takeoka et al, 1995] and measuring ocean waves [Hisaki, 1996].…”

Section: Hf Ocean Radar Systems Have Been Developed In the Unitedmentioning

confidence: 99%

Surface current variability east of Okinawa Island obtained from remotely sensed and in situ observational data

Hisaki

Tokeshi²,

Fujiie

et al. 2001

J. Geophys. Res.

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Abstract. We investigated ocean surface current variability in the region east of Okinawa Island in the spring of 1998 using in situ and remotely sensed data including surface velocity estimates inferred from HF ocean radars. Most previous studies utilizing HF ocean radars were limited to shallow continental shelves. In contrast, most of the observation area in this study was in the open ocean. During the observation period the HF ocean radars sampled a region where anticyclonic and cyclonic mesoscale eddies were adjacent to each other. The HF-radar-derived ocean currents agree with those measured by a current meter. The surface currents were highly variable in both time and space and were affected by the eddy field in the offshore region. The current field was related to the near-surface water temperature. For example, a local temperature rise was often associated with northeastward flows. The surface currents in regions shallower than about 1000 m had a significant correlation with local wind forcing. Our HF ocean radars often detected a strongly convergent zone, which was different in character from those described in previous studies in that it was in the deep ocean. From other data such as National Oceanic and Atmospheric Administration advanced very high resolution radiometer imagery, we concluded that the convergent zone was due to mesoscale eddy fronts. IntroductionMeasurements of ocean surface currents are important for physical oceanography, fishery studies, and monitoring the coastal environment for contaminants such as oil pollution. One promising method that efficiently measures the evolving current field over broad spatial areas uses high-frequency (HF) ocean 31,057

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“…The method for measuring near-surface ocean currents using high-frequency (3-30 MHz) radar was first demonstrated more than 20 years ago [Stewart and Joy, 1974;Barrick et al, 1977]. It is based on the fact that HF backscatter from the sea surface is primarily from Bragg-resonant surface waves, that is, those waves whose wavelength is exactly one half the radio wavelength and which travel exactly toward and away from the radio wave source.…”

Section: Measurements Of Ocean Currentsmentioning

confidence: 99%