Distribution of textural parameters of surficial sediments in the Bay of Chetumal: Implications for the inference of transport

  • Alberto Sánchez Centro Interdisciplinario de Ciencias Marinas, Instituto Politécnico Nacional, Apartado Postal # 592, La Paz, Baja California Sur, México.
  • Teresa Álvarez-Legorreta El Colegio de la Frontera Sur, Unidad Chetumal, Av. del Centenario Km. 5.5, 77900 Chetumal, Quintana Roo, México.
  • Ricardo Sáenz-Morales El Colegio de la Frontera Sur, Unidad Chetumal, Av. del Centenario Km. 5.5, 77900 Chetumal, Quintana Roo, México.
  • Ma. Concepción Ortiz-Hernández El Colegio de la Frontera Sur, Unidad Chetumal, Av. del Centenario Km. 5.5, 77900 Chetumal, Quintana Roo, México.
  • B. Estela López-Ortiz Facultad de Biología, Universidad Michoacana de San Nicolás de Hidalgo, Av. Fco. J. Múgica S/N., 58030, Morelia, Michoacán, México.
  • Sergio Aguíñiga Centro Interdisciplinario de Ciencias Marinas, Instituto Politécnico Nacional, Apartado Postal # 592, La Paz, Baja California Sur, México. Becario de la Comisión de Operación y Fomento a las Actividades Académicas (COFAA), Instituto Politécnico Nacional.
Keywords: sediment transport, grain size trend analysis, polluting agents, Bay of Chetumal, Mexico.

Abstract

The grain-size trend analysis (grain size, sorting and asymmetry) was determined from 43 stations to identify the path of sediment transport in the Chetumal Bay, Quintana Roo. The analysis of principal components and grain size trend analysis were applied to sediment textural parameters. It was established that better sorted sedimentary material is associated with stations with fine grain-size and vice versa. Vectors transport suggests a net transport of sediment in the direction S-SE and S-SW (for the sampling period), which is consistent with the direction of the surface and deep currents in the Chetumal Bay. The preferential deposition of fine and well-sorted material in the central part of the bay has excellent correlation with the contents of anthropogenic pollutants found in other studies.

Published
2018-01-22
Section
Articles