Journal
CIENCIAS MARINAS
Volume 39, Issue 1, Pages 83-99Publisher
INST INVESTIGACIONES OCEANOLOGICAS, U A B C
DOI: 10.7773/cm.v39i1.2152
Keywords
dune field; dune morphology; sub-bottom profiles; sedimentology
Categories
Funding
- CONACYT-Yucatan State Government Joint Fund for the Promotion of Scientific and Technological Research [108960]
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Conspicuous sedimentary deposits forming well-structured and prominent submarine dunes are found on the coast of Yucatan (Mexico), close to the ports of Dzilam de Bravo, San Felipe, and El Cuyo. The objective of this study was to evaluate the morphological and sedimentological features of these submarine dunes. Sub-bottom seismologic profiles were obtained and standardized sedimentological analyses were performed on sediment samples collected at the three study sites. Both the height and wavelength of dunes were different between the three sites, mean heights ranging from 0.84 to 2.28 m and mean wavelengths from 98 to 330 m. Most of the dunes showed a well-marked asymmetry, which is related to the direction of their movements. Their granulometric composition was dominated by medium, moderately well-sorted sand. This study provides bases for future systematic monitoring of these peculiar ecosystems, including information to be considered for the evaluation of their ecological role in the marine system.
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