Occurrence of acoustic masking in sediments in two areas of continental shelf of Spain Ria de Muros (NW) and Gulf of Cádiz (SW)
Zones of acoustic masking in sediments in the continental shelf of Cádiz, and in the Ria de Muros have been mapped utilizing 3.5 kHz and Uniboom seismic reflection records. In Cádiz the masking may be generated by shell beds, source of the shells is a Pliocene conglomerate that corresponds to the ac...
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1984 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/319929 |
| Acceso en línea: | http://hdl.handle.net/10261/319929 |
| Access Level: | acceso abierto |
| Palabra clave: | Medio Marino Sede Central IEO |
| Sumario: | Zones of acoustic masking in sediments in the continental shelf of Cádiz, and in the Ria de Muros have been mapped utilizing 3.5 kHz and Uniboom seismic reflection records. In Cádiz the masking may be generated by shell beds, source of the shells is a Pliocene conglomerate that corresponds to the acoustic basement in the area. Acoustic masking in the sediments of Ria de Muros was generated by the presence of gas within the sediments. The gas is due to the decay of organic matter within the sediments. That area of acoustic masking in the Ria de Muros roughly coincides with the zone of mud with high (15.5%) organic content, and that gas bubbles were noted in the water column in the same region, support this hypothesis. |
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