http://wera.cen.uni-hamburg.de/Pub_80.shtml Last update: Wednesday, 25-Nov-2015 15:30:58 CET
 
University of Hamburg HF-Radar Home Page
 
Information Projects Publications Experiments Links Tests Institute of Oceanography Address
 
 

2-D Inner-Shelf Current Observations from a Single VHF WEllen RAdar (WERA) Station


G. VOULGARIS, N. KUMAR, K.-W. GURGEL, J.C. WARNER, J.H. LIST (2011),
CWTM 2011 Conference on Current Measurement Technology, Monterey, CA, USA, Proceedings, March 2011.

Abstract - - The majority of High Frequency (HF) radars used worldwide operate at medium to high frequencies (8 to 30 MHz) providing spatial resolutions ranging from 3 to 1.5 km and ranges from 150 to 50 km. This paper presents results from the deployment of a single Very High Frequency (VHF, 48 MHz) WEllen RAdar (WERA) radar with spatial resolution of 150 m and range 10-15 km, used in the nearshore off Cape Hatteras, NC, USA. It consisted of a linear array of 12 antennas operating in beam forming mode. Radial velocities were estimated from radar backscatter for a variety of wind and nearshore wave conditions. A methodology similar to that used for converting acoustically derived beam velocities to an orthogonal system is presented for obtaining 2-D current fields from a single station. The accuracy of the VHF radar-derived radial velocities is examined using a new statistical technique that evaluates the system over the range of measured velocities. The VHF radar velocities showed a bias of 3 to 7 cm/s over the experimental period explainable by the differences in radar penetration and in situ measurement height. The 2-D current field shows good agreement with the in situ measurements. Deviations and inaccuracies are well explained by the geometric dilution analysis.
klaus-werner.gurgel@uni-hamburg.de
Last update: Wednesday, 25-Nov-2015 15:30:58 CET
 
 
 
Klaus-Werner Gurgel's Homepage
Comments to:
 
WASd webserver
 
OpenVMS Operating SYSTEM
  Valid HTML 4.0!