2024-03-28T22:47:56Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/198522020-05-19T12:47:31Zcom_10261_91com_10261_8col_10261_344
DIGITAL.CSIC
author
Fernández-Salas, L. M.
author
Lobo, F. J.
author
Sanz, J. L.
author
Díaz del Río, Víctor
author
García, M. C.
author
Moreno, I.
2009-12-30T11:22:48Z
2009-12-30T11:22:48Z
2007-09-06
Marine Geology 243 (1-4): 31-57 (2007)
0025-3227
http://hdl.handle.net/10261/19852
10.1016/j.margeo.2007.04.013
Several fields of seafloor undulations from pro-deltaic wedges in the northern margin of Alboran Sea, Western Mediterranean Basin, are described in this paper. A series of elongated, subparallel bathymetric undulations are distinguished in the foreset-to-bottomsets regions of the Holocene pro-deltaic wedges related with the Guadalfeo and Verde–Seco rivers. Multibeam data, surficial sediment samples and high-resolution seismic profiles have been used in this study, and integrated in a Geographical Information System. Quantitative measurement of key morphometric parameters (wave-length, height, asymmetry, length and wave-form index) was performed on multibeam data and seismic profiles using the ArcGis software. Wave-form index and depth data were analysed statistically, and a cluster analysis was carried out in each area.
According to these results, we infer that sea-floor undulations in the study areas are best explained by the influence of strong sediment flows normal to bathymetric contours, probably coupled with the effect of subsequent slow sediment deformation processes such as sediment creeps. The influence of bottom-current activity is considered less likely, as the position of river mouths and the very high slope gradients seems to be the key factors which control the development of these sea-floor undulations. The Alboran Sea sea-floor undulations are compared with those of other fields in shallow-water environments and the different processes of formation evaluated
eng
closedAccess
Holocene
Pro-deltaic systems
Sea-floor undulations
Alboran Sea
Continental shelf
Submarine geomorphology
Morphometric analysis and genetic implications of pro-deltaic sea-floor undulations in the northern Alboran Sea margin, western Mediterranean Basin
artículo
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