High Resolution Ocean Radar Observations in Ports and Harbours
Heron, Mal, Prytz, Arnstein, and Steinberg, Craig (2011) High Resolution Ocean Radar Observations in Ports and Harbours. Proceedings of Coasts and Ports 2011. Coasts and Ports 2011 , 28 - 30 September 2011, Perth, WA, Australia , pp. 1-6.
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Observations are shown from an ocean radar system which operates in the VHF frequency band (100-180 MHz) and produce surface current measurements on grid scales of 50-200m over ranges up to 6-10 km. This is a scale of operation that is well suited to measurement tasks in Ports, harbours and coastal zones. Ocean radars commonly used for mapping surface currents in coastal zones operate in the HF frequency band and measure currents on grid scales of 3-6 km over distances of 100-200km. The VHF ocean radar system consists of two stations which look at the same patch of ocean from different directions. Each station measures the radial component of the surface current at each grid point, and by combining data from both stations it is possible to produce maps of surface current vectors. Each station can cover a 60-degree sector of azimuth, and for wider coverage it is possible to use multiplexed receive antennas to double the size of the sector. The time to make the basic 60-degree sector for two stations is 10 minutes, and becomes 20 minutes for the wider 120 degree coverage. Results are shown for sheltered coastal waters and for open coast line where there are breaking waves. This methodology is particularly appropriate for monitoring currents in congested port areas where fixed moorings may be compromised.
|Item Type:||Conference Item (Refereed Research Paper - E1)|
Coasts and Ports 2011 is an amalgamation of the 20th Australasian Coastal and Ocean Engineering conference and the 13th Australasian Port and Harbour Conference.
|Keywords:||Ocean radar; surface currents; surf zone.|
|FoR Codes:||04 EARTH SCIENCES > 0405 Oceanography > 040503 Physical Oceanography @ 100%|
|SEO Codes:||96 ENVIRONMENT > 9611 Physical and Chemical Conditions of Water > 961104 Physical and Chemical Conditions of Water in Marine Environments @ 100%|
|Deposited On:||20 Apr 2012 16:26|
|Last Modified:||20 Apr 2012 16:26|
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