Articles | Volume 35, issue 3
https://doi.org/10.5194/angeo-35-639-2017
https://doi.org/10.5194/angeo-35-639-2017
ANGEO Communicates
 | 
11 May 2017
ANGEO Communicates |  | 11 May 2017

Minimum variance projection for direct measurements of power-law spectra in the wavenumber domain

Yasuhito Narita, Yoshihiro Nishimura, and Tohru Hada

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Latest update: 24 Apr 2024
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Short summary
An algorithm is proposed to estimate the spectral index of the turbulence energy spectrum directly in the wavenumber domain using multiple-sensor-array data. In contrast to the conventional method using time series data and Fourier transform of the fluctuation energy onto the frequency domain, the proposed algorithm does not require the assumption of Taylor's frozen inflow hypothesis, enabling direct comparison of the spectra in the wavenumber domain with various theoretical predictions.