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Evolution of Bearing Determination in HF Current Mapping Radars
Bearing Determination HF Current Mapping Radars
2015/8/10
Nearly all target detection "radars" in existence operate at microwave frequencies because their wavelengths are small enough that compact antennas provide both good angular resolution and high sensit...
Experience With Shipborne Measurements of Surface Current Fields by HF Radar
Shipborne Measurements Surface Current Fields HF Radar
2015/8/10
Oceanographic research using HF radar techniques started in Germany in 1980 by adopting NOAA's CODAR (Coastal Ocean Dynamics Applications Radar), which has originally been introduced by Barrick et al....
improving the Quality and Accessibility of current profile Measurements in the Southern Ocean
current profile Measurements Southern Ocean
2015/7/15
it takes more
than the Adcp itself, however, to yield good
current measurements. The end result depends
on how and where the sonar is installed; on
the quality of ancillary information includi...
Applications of GODAE Ocean Current Forecasts to Search and Rescue and Ship Routing
GODAE Ocean Current Search and Rescue
2015/7/6
As GODAE ocean forecast systems progress, their contributions toward improving the safety and efficiency of operations at sea will increase. In this article, we review present uses of GODAE ocean fore...
Using a Time-domain Higher-order Boundary Element Method to Simulate Wave and Current Diffraction from a 3-D Body
wave-current diffraction time-domain simulation drift force higher-order boundary element method
2011/9/9
To study wave-current actions on 3-D bodies a time-domain numerical model was established using a higher-order boundary element method (HOBEM). By assuming small flow velocities, the velocity potentia...
Interactions between Steady Won-Uniform Currents and Gravity Waves with Applications for Current Measurements
Interactions Gravity Waves Steady Won-Uniform Currents Current Measurements
2009/4/3
Interactions between steady non-uniform currents and gravity waves are generalized to include the case of a random gravity wave field. The Kitaigorodskii-Pierson-Moskowitz frequency spectrum is used a...
Wind-Generated Current and Phase Speed of Wind Waves
Wind-Generated Current Phase Speed Wind Waves
2009/4/3
Measurements of drift were made in a wind and wave facility at different elevations below the mean water level. The drift profiles were obtained for reference wind speeds, Ur=3.1, 5.7 and 9.6 m sec...
Recent Decadal Variation in the California Current System
Decadal Variation California Current System
2009/4/3
A study has been made to identify the existence of different decadal climatic regimes before and after the anomalous environmental changes that occurred in 1958. Atmospheric and oceanographic data in ...
Tidal and Sub-inertial Fluctuations in the Florida Current
Sub-inertial Fluctuations Florida Current
2009/3/26
A 50-day time series was obtained from a current meter mooring in the Florida Current off Miami. The results agree with earlier observations regarding the significance of several-day oscillations in t...
Seasonal Variation in Transport of the Pacific North Equatorial Current Relative to the Wind Field
Seasonal Variation Wind Field Pacific North Equatorial Current
2009/3/24
Geostrophic transports in the upper 300 m relative to 1000 db are computed from observations along four meridional sections occupied monthly during the Trade Wind Zone Oceanography Study, February 196...
Barotropic Rossby Waves in a Zonal Current：Effects of Lateral Viscosity
Barotropic Rossby Waves Zonal Current Lateral Viscosity
2009/3/24
The behavior of a barotropic Rossby wave in a zonal current is studied theoretically using a beta-plane ocean of constant depth in which the current depends only on latitude. The wave may be reflected...
Microstructure and Intrusions in the California Current
Microstructure Intrusions California Current
2009/3/24
Two microstructure records taken at shallow depths off Cabo San Lucas, at the southern tip of Baja California, are compared. One is similar to records previously taken in the mid-gyre, and has an “irr...
The Bering Slope Current flows from southeast to northwest across the Aleutian Basin of the Bering Sea, parallel to the continental slope of the eastern Bering Sea shelf. The water mass characteristic...
Short-Period Variations in a Great Lakes Coastal Current by Aerial Photogrammetry
Short-Period Variations Short-Period Variations
2009/3/24
Measurements of the surface velocity structure off the Keweenaw Peninsula of Lake Superior were obtained in 1971 and 1972, using aerial photography to track surface drift cards. Variations in the curr...
Formation of Meanders, Fronts, and Cutoff Thermal Pools in a Baroclinic Ocean Current
Baroclinic Ocean Current Cutoff Thermal Pools
2009/3/24
Using an analytical model similar to that previously applied by the authors to the atmosphere, calculations are made showing how second-order, nongeostrophic effects can modify a two-layer baroclinic ...