Surface currents from hf radar in the beaufort sea
This presentation is the property of its rightful owner.
Sponsored Links
1 / 25

Surface Currents from HF Radar in the Beaufort Sea PowerPoint PPT Presentation


  • 61 Views
  • Uploaded on
  • Presentation posted in: General

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).

Download Presentation

Surface Currents from HF Radar in the Beaufort Sea

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Surface currents from hf radar in the beaufort sea

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)


Sponsored by minerals management service and noaa through national ocean partnership program

Sponsored by Minerals Management Service and NOAA through National Ocean Partnership Program

Thanks to British Petroleum Alaska

and

Alaska Clean Seas


Surface currents from hf radar in the beaufort sea

Study the temporal and spatial variability of surface currents during ice-free and mixed ice/open water conditions using HF radar

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)


Hf radar in the beaufort sea

HF radar in the Beaufort Sea


Surface currents from hf radar in the beaufort sea

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

SITE

VISITS:

Install WEST

Install ENDI

Trouble-

shoot

Repeat APMs, Remove 12 MHz Tx “Trap”

Retrofit with Repaired 12 MHZ Tx “Trap”

Sent switch.pl code

WEST

Operational = 79%

25

12

testing

25

12 MHz

12 MHz

ENDI

Operational = 91%

12

25

12 MHz

25

12 MHz

25 MHz

12 MHz


Surface currents from hf radar in the beaufort sea

12 MHz

24 MHz


Surface currents from hf radar in the beaufort sea

CODAR:

Mean U = - 17 cm/s

Mean V = 3 cm/s

STD = 23.3 cm/s

Wind:

Mean U = - 654 cm/s

Mean V = 184 cm/s

STD = 682 cm/s


Surface currents from hf radar in the beaufort sea

At a 2 hour lag Wind and Currents

Correlation Amplitude = 0.8

Rotation Angle = 18 degrees CW (from wind to current)


Conclusions

Conclusions

  • Easterly Winds give Westward Currents

    • (most of the time)

    • current field not uniform

  • Occasional on-offshore transport

  • Sea ice detection? need SAR


Surface currents from hf radar in the beaufort sea

THANK YOU


  • Login