Surface Currents from HF Radar in the Beaufort Sea. A Presentation to the Alaska Marine Science Symposium January 25, 2006 Dave Musgrave, Hank Statscewich, Rachel Potter (UAF) Pete Lilleboe, Belinda Lipa (CODAR Ocean Sensors).
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Surface Currents from HF Radar in the Beaufort Sea
A Presentation to the Alaska Marine Science Symposium
January 25, 2006
Dave Musgrave, Hank Statscewich, Rachel Potter (UAF)
Pete Lilleboe, Belinda Lipa (CODAR Ocean Sensors)
Thanks to British Petroleum Alaska
Alaska Clean Seas
Beaufort Sea 101: Under open water conditions:
Winds from east, westward currents
Winds from west, eastward currents
Under mixed ice/open water conditions:
How well does HF radar work for surface currents?
Can HF radar be used to detect ice floes?
New technology: switchable frequencies (12 and 25 Mhz)
Beaufort Sea HF Radar Project Data Recovery Rate:
Solid Dashes represent when radial files are made, gaps occur when the system was down.
Retrofit with Dual Frequency Rx Antennas
APMs with Bruce
Repeat APMs, Remove 12 MHz Tx “Trap”
Retrofit with Repaired 12 MHZ Tx “Trap”
Sent switch.pl code
Operational = 79%
Operational = 91%
Mean U = - 17 cm/s
Mean V = 3 cm/s
STD = 23.3 cm/s
Mean U = - 654 cm/s
Mean V = 184 cm/s
STD = 682 cm/s
At a 2 hour lag Wind and Currents
Correlation Amplitude = 0.8
Rotation Angle = 18 degrees CW (from wind to current)