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On the varying slope of velocity spectra
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Rottger, J. |
| Copyright Year | 1986 |
| Description | Spectra of zonal, meridional and vertical wind velocity, measured during a 24 hour period with the spaced-antenna technique indicate quite a variable slope as a function of height. It is found that the spectral slope (1h to 24h) of all three components correlates with the mean horizontal wind velocity. A possible conclusion is that the frequency dependence of power density of horizontal and vertical fluctuation component apparently depends on the mean wind velocity. However, the vertical spectra at periods larger than about 1 hour can also be influenced by spillover (due to finite radar antenna beam width) from the horizontal fluctuation component or by a Doppler shift. |
| File Size | 80689 |
| Page Count | 3 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870001030 |
| Archival Resource Key | ark:/13960/t83j8bv4r |
| Language | English |
| Publisher Date | 1986-06-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Slopes Meteorological Radar Radar Beams Correlation Wind Velocity Radar Antennas Spectra Height Doppler Effect Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
