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Fecha
2021-02-02
Derechos de acceso
info:eu-repo/semantics/openAccess
Título de la revista
ISSN de la revista
Título del volumen
Editorial
Springer
Citas
Resumen
Benthic habitats are primarily determined by the nature of the substrate (i.e., the type of sediment or rock) and by the bathymetry (e.g., light availability, current, or waves exposition) both determining the viability of infaunal organisms. In this sense multibeam (MB) echosounders provide more data about the sea bottom than any other acoustic technique. During the 2014 Argentine-Canadian survey of the RV Coriolis II in the Gulf of San Jorge, MB data were acquired in the area of Robredo, west of the Marine Protected Area (MPA) Parque Interjurisdiccional Marino Costero Patagonia Austral (PIMCPA, Patagonia, Argentine). Acoustic data were affected by acquisition artifacts, so an ad hoc algorithm was required to restore the data. Moreover, during the survey, dredge samples were also acquired where acoustic data suggested changes in substrate properties, and two later scientific surveys acquired video transects of the sea bottom that allowed also a basic classification. A non-supervised classification of the seabed was performed, using a subsampling and voting algorithm, with the acoustic and bathymetric data. The final classification is in agreement with groundtruthing (dredge samples and video transects), showing that bottom structure complexity leads to a meaningful picture of the sea bottom classes in the area. Our results reveal that Robredo has two subareas, one with a fine substrate (west) and another with a coarse substrate (east), the latter being also characterized by outcropping rock formations of marked relief. Despite the small spatial coverage of the survey, the resulting sea bottom classification presented in this paper has described, for the first time, some important features of the benthic geohabitats in the PIMCPA.
Descripción
This is an Accepted Manuscript of an article published by Springer in "Geo-Mar Letters 41, 12", available at: https://doi.org/10.1007/s00367-020-00682-4
Este es el manuscrito aceptado del artículo publicado por Springer en "Geo-Mar Letters 41, 12", disponible en línea: https://doi.org/10.1007/s00367-020-00682-4
Este es el manuscrito aceptado del artículo publicado por Springer en "Geo-Mar Letters 41, 12", disponible en línea: https://doi.org/10.1007/s00367-020-00682-4
Categorías UNESCO
Palabras clave
Benthic geohabitat, Multibeam echosounder, Seabed classification, Patagonian Gulf
Citación
Sánchez-Carnero, N., Rodríguez-Pérez, D., (2021). A sea bottom classification of the Robredo area in the Northern San Jorge Gulf (Argentina). Geo-Mar Letters 41, 12. https://doi.org/10.1007/s00367-020-00682-4
Centro
Facultad de Ciencias
Departamento
Física Matemática y de Fluídos
Grupo de investigación
Física Médica