Journal of Marine Science: Research & Development
Open Access

Abstract

The Itajuru channel, located in the Eastern side of the Araruama lagoon, Rio de Janeiro state, is the one who makes the connection between Araruama lagoon and the sea. It is important to understand the hydrodynamic circulation of the location and effects of the sedimentological processes, and also estimate of the hydrodynamic and sedimentological processes in the future after the sea level change due to effects of climate change. This work presents results of a study about sediments dynamics in the Araruama lagoon focusing on the Itajurú channel region considering the present mean sea level and a foreseen sea level rise of 0.5 meters due to climate changes. The study was conducted with the aid of computer modeling for hydrodynamic and morphodynamic in SisBaHiA®. The results indicate that Araruama lagoon is composed of two hydrodynamics compartments; one is dominated by the action of the tide between the entrance of the channel and the strait of Perynas, and another one by the action of wind in narrow region between strait of Perynas and western extreme of the lagoon. With sea level rise, the magnitude of current velocities and flow rates is increased and consequently flow of sediment transport from upstream to downstream of Itajuru channel is increased and has more effect in the bridge Feliciano Sodre.

Biography

Sigauque P is master in Oceanic Engineering, Physical Oceanographer, Meteorologist and topographer. He was born on April 18, 1976 in Maputo city capital of Mozambique. For the past thirteen years (2000-2013). He has worked as Hydrographer, topographer, Meteorologist and Oceanographer and recently (since 2013 until now) as Oceanic Engineer at National Institute of Hydrography and Navigation works with numerical modeling to make studies about hydrodynamics circulation and sedimentological processes in bays located in Mozambique. As physical Oceanographer he is doing observations and processing of tide data in the Mozambique tide gauges stations. He did his master ́s course on environmental modeling applicable in Coastal processes. As topographer He does geometric leveling to auxiliary in tide gauge mounting and to calculate the level difference between benchmarks that are located in the ports and bays in Mozambique. The topography course started in 1995 and finished in 1996 and these periods correspond to Polytechnic and junior at Technical Professional School of Geodesy and Cartography. He did his degree in Meteorology at Eduardo Mondlane University. He started this course in 2005 and has finished in 2013. The topography and Meteorology courses were in Mozambique. Recently he did his master in Oceanic Engineer at Rio de Janeiro Federal University in Brazil.