ESTIMATION OF SEA-FLOOR ROUGHNESS SPECTRAL PARAMETERS FROM MULTIBEAM SONAR ACOUSTIC BACKSCATTER DATA - AXIAL SEAMOUNT, JUAN-DE-FUCA RIDGE

Authors
DZIAK RP MATSUMOTO H FOX CG
Citation
Rp. Dziak et al., ESTIMATION OF SEA-FLOOR ROUGHNESS SPECTRAL PARAMETERS FROM MULTIBEAM SONAR ACOUSTIC BACKSCATTER DATA - AXIAL SEAMOUNT, JUAN-DE-FUCA RIDGE, Geophysical research letters, 20(17), 1993, pp. 1863-1866
Citations number
21
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Geophysical research letters → ACNP
ISSN journal
00948276
Volume
20
Issue
17
Year of publication
1993
Pages
1863 - 1866
Database
ISI
SICI code
0094-8276(1993)20:17<1863:EOSRSP>2.0.ZU;2-T
Abstract
A new method to estimate seafloor roughness spectra applies the surfac e backscatter model of Jackson et al. [1986] to multi-beam sonar backs catter data. The use of principal components analysis, following spect ral estimation, derives a single mappable index from correlated spectr al parameters. This index can be mapped as a continuous field correspo nding to geological observations in the area. This method allows for q uantitative delineation of the neovolcanic zone and other zones of vol canic and tectonic activity from hull-mounted sonar systems.