The Spectral Power Density and Shadowing Function of a Glacial Microrelief at the Decimetre Scale
Abstract Longitudinal profiles of roches moutonnées have been measured once every centimetre over a total length of more than 100 m. Only wavelengths in the range 3.6 cm < λ < 40 cm have been kept and analysed. Levels and their slopes have a symmetrical, non-Gaussian distribution. The...
| Published in: | Journal of Glaciology |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Cambridge University Press (CUP)
1979
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1017/s0022143000029749 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000029749 |
| Summary: | Abstract Longitudinal profiles of roches moutonnées have been measured once every centimetre over a total length of more than 100 m. Only wavelengths in the range 3.6 cm < λ < 40 cm have been kept and analysed. Levels and their slopes have a symmetrical, non-Gaussian distribution. The spectral power density varies roughly as γ 0 ν –n ( ν ═ wavenumber ═ 1/λ); n being the same for all the profiles ( n ═ 2.36) and γ 0 being dependent on the studied area. No significant difference has been found for the shadowing function of the different studied areas. It differs consistently from Smith’s theoretical function. |
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