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Multi-scale roughness spectra of Mount St. Helens debris flowsA roughness spectrum allows surface structure to be interpreted as a sum of sinusoidal components with differing wavelengths. Knowledge of the roughness spectrum gives insight into the mechanisms responsible for electromagnetic scattering at a given wavelength. Measured spectra from 10-year-old primary debris flow surfaces at Mount St. Helens conform to a power-law spectral model, suggesting that these surfaces are scaling over the measured range of spatial frequencies. Measured spectra from water-deposited surfaces deviate from this model.
Document ID
19930069924
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Austin, Richard T.
(NASA Headquarters Washington, DC United States)
England, Anthony W.
(Michigan Univ. Ann Arbor, United States)
Date Acquired
August 16, 2013
Publication Date
August 6, 1993
Publication Information
Publication: Geophysical Research Letters
Volume: 20
Issue: 15
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
93A53921
Funding Number(s)
CONTRACT_GRANT: NAGW-2199
Distribution Limits
Public
Copyright
Other

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