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Mapeo del fondo marino del talud continental superior y medio de Uruguay

Authors: López-Orrego, Guzmán; De Mello, Camila; Marín, Yamandú;

Mapeo del fondo marino del talud continental superior y medio de Uruguay

Abstract

Se analizaron los registros acústicos obtenidos con una ecosonda multihaz durante una campaña oceanográfica del “B/O Miguel Oliver” en enero-febrero de 2010. El objetivo fue mapear el fondo marino del talud continental en la Zona Económica Exclusiva (ZEE) uruguaya. El procesamiento de los registros acústicos se realizó con el software MB-System, y se incorporaron a un sistema de Información Geográfica (Quantum GIS). Se obtuvieron grillas de 3 m por 3 m para describir las formaciones submarinas menores (montículos y pockmarks), y también un mapa topográfico de toda el área de estudio para describir las formaciones submarinas mayores (cañones submarinos, y cicatrices de deslizamientos). Al analizar la topografía del área se identificaron 4 cañones submarinos y el comienzo de un quinto en el extremo Sur. Se observaron también 63 formaciones de menor tamaño sobre el fondo, 22 de las cuales fueron montículos y 41 pockmarks (PM). Los montículos fueron clasificados según su agrupamiento y presencia de rastros erosivos (escarpa) como Montículo Solitario con Escarpa (MScE), Montículo Solitario sin Escarpa (MSsE) y Montículos Agrupados (MA). Esta información podrá contribuir a la determinación de áreas prioritarias de conservación tanto por sus características geomorfológicas como por la biota allí presente, posibilitando un manejo responsable de los recursos pesqueros.

We analyzed the acoustic data obtained with a multibeam echosounder during an oceanographic survey abroad the “R/V Miguel Oliver” in january-february of 2010. The aim was mapping the sea floor of the continental slope of the uruguayan Exclusive Economic Zone (EEZ). The acoustic data were processed with MB-System software, and then incorporated into a Geographic Information System (Quantum GIS). We obtained 3 m for 3 m grid files to describe small submarine structures (mounds and pockmarks), and also a topographic map of the entire area to describe large submarine structures (submarine canyons and landslides). When we analyzed the topography of the entire area we identified 4 submarine canyons and the beginning of a fifth in the south end. We also observed 63 small submarine structures in the seafloor, where 22 were mounds and 41 were pockmarks (PM). The mounds were classified according to its grouping and the presence of erosive traces (scarps) like Solitary Mound with Scarp (SMwS), Solitary Mound without Scarp (SMwoS) and Grouped Mounds (GM). This information may contribute to define priority areas to protect by its geomorphological features or by its present biota, enabling responsible fisheries resource management.

Miguel Oliver, Acústica, Sonar mulithaz, Mapeo del fondo marino, Cañones submarinos, Corales de aguas frias

Asociación Uruguaya de Acústica

Unpublished

Keywords

Coral reefs, Submarine canyons, Seafloor mapping, Multibeam sonar

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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