ANALYSIS OF THE TEMPORAL VARIABILITY OF CASSINO (RS) BEACH SANDBARS POSITIONS THROUGH VIDEO IMAGES
DOI:
https://doi.org/10.22456/1807-9806.37370Keywords:
sandbars, video monitoring system, new bar formation, temporal components.Abstract
Beaches are dynamic systems where natural elements like winds, water waves and sand interact resulting in complex hydrodynamical and sedimentary processes. Among the many morphological features presented at those environment, the sandbars are one of the most common features. In this context the main objective of the present study was to discuss the Cassino beach (RS) sandbars behavior at different temporal scales using for such purpose a two years time series of their position. To achieve the main goal, this paper used remote sense techniques such as video imaging. Analysis of the time series showed that Cassino beach presents a multiple bar system composed mainly by three bars. In addition, the emergence of a new bar by the split of the second (intermediate) one in two was observed, in an unprecedented manner in the scientific literature. During this period of time, before the total disappearance of the most offshore sandbar, the system was characterized as a four sandbars system. The analysis also indicated the presence of different temporal components such as seasonal, sub-seasonal, monthly and weekly components, in which the last has the greatest representation of the total variance as well as a significant correlation with significant wave height variability.Downloads
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Published
2012-12-31
How to Cite
PEREIRA, P. S., CALLIARI, L. J., GUEDES, R. M. C., & SCHETTINI, C. A. F. (2012). ANALYSIS OF THE TEMPORAL VARIABILITY OF CASSINO (RS) BEACH SANDBARS POSITIONS THROUGH VIDEO IMAGES. Pesquisas Em Geociências, 39(3), 195–211. https://doi.org/10.22456/1807-9806.37370
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