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First extreme long range results with WERA

by

Thomas Helzel1, Dana Savidge2, Travis McKinsec2, Rich Styles3, Hannuman Bull3 and Matthias Kniephoff1
1 Helzel Messtechnik GmbH, Carl-Benz-Str. 9, 24568 Kaltenkirchen, Germany
e-mail: helzel@helzel.com
2 Skidaway Institute of Oceanography, 10 Ocean Science Circle, Savannah, GA, 31411
e-mail: dana.savidge@skio.usg.edu
3 University of South Carolina, 701 Sumter Street, Columbia, South Carolina, 29208
e-mail: rstyles@geol.sc.edu

Abstract

At three sites the WERA system was installed with an operating frequency of 8.35 MHz. Due to the extreme low noise characteristic of the system and by means of optimised site geometry ranges of up to 260 km for 1st order Bragg lines were achieved. The temporal resolution to generate a new data set was 8 to 15 minutes with a spatial resolution of 1 to 3 km. An new, self-adapting centre frequency optimisation technique, developed at the University of Hamburg, was used to reduce the influence from external interference. First range resolved spectra, radial current and 2D current maps are presented. Options for similar installations at other places are discussed.

 
 
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