Study of Atrato river plume in a tropical estuary: Effects of the wind and tidal regime on the Gulf of Uraba, Colombia

This study focuses on the relative importance of the forcing agents of Atrato River plume as it propagates in a tropical estuary located in the Gulf of Uraba in the Colombian Caribbean Sea. Six campaigns of intensive field data collection were carried out from 2004 to 2007 to identify the main featu...

Full description

Autores:
Montoya Jaramillo, Luis Javier
Toro Botero, Mauricio
Gomez-Giraldo, Andrés
Tipo de recurso:
Article of journal
Fecha de publicación:
2017
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/60437
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/60437
http://bdigital.unal.edu.co/58769/
Palabra clave:
62 Ingeniería y operaciones afines / Engineering
Hydrodynamics
freshwater river plume
tropical estuaries
Gulf of Uraba
ELCOM model
Hidrodinámica
plumas estuarinas
estuarios
golfo de Urabá
modelo ELCOM
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
Description
Summary:This study focuses on the relative importance of the forcing agents of Atrato River plume as it propagates in a tropical estuary located in the Gulf of Uraba in the Colombian Caribbean Sea. Six campaigns of intensive field data collection were carried out from 2004 to 2007 to identify the main features of the plume and to calibrate and validate a numerical model. Field data and numerical models revealed high spatial and temporal plume variability according to the magnitudes of river discharges, tidal cycles, and wind stress. Atrato River discharge spreads over a considerable portion of the gulf, but only occupies the top 2 m of the surface layer. The tide modifies the position of the plume by inducing a horizontal migration of the salinity front during the day. Two principal modes of circulation in the gulf were identified under different wind conditions.