2019-08-302019-08-302017-09-06RATZ, Ítalo Tadeu Barros. Avaliação do transporte transversal de sedimentos na praia estuarina do Marahú - Ilha de Mosqueiro. Orientadora: Leilanhe Almeida Ranieri. 2017. 53 f. Trabalho de Curso (Bacharelado em Oceanografia) - Faculdade de Oceanografia, Instituto de Geociências, Universidade Federal do Pará, Belém, 2017. Disponível em: http://bdm.ufpa.br/jspui/handle/prefix/1821. Acesso em:.http://bdm.ufpa.br/jspui/handle/prefix/1821Estuarine beaches are intertidal sand or gravel deposits on the banks of estuaries. The Marahú beach, located on Mosqueiro Island/PA and directly connected to the Pará River estuary, is classified as a estuarine beach. In it is occurring a marked erosive process, being remarkable the expressive action of the cross-shore current in the beach. In view of this, this work aimed to analyze the cross-shore sediments transport on the Marahú beach and its effects on the erosive or depositional processes in three sectors of it. A field campaign was carried out in May 2017 (rainy season) to analyze the sedimentary balance (sediment deposition and removal) on the beach during this period. In the three studied sectors were collected sediments from the cross-shore transport using a trap in the swash zone, sometimes in the opposite direction to the river, sometimes in the opposite direction to the continent. Measurements of waves and winds were also made on the beach. Afterwards, laboratory analyzes were carried out, using sieving techniques aiming the separation of the sediments. The obtained data were later calculated to understand the sediment transported by transverse currents, the variations in the sedimentation during flood tides and ebb and during the flow and reflux of waves in the three sectors of the beach. Analyzing the results obtained with the trap, it was observed that during the flood tide the volume of sediments transported by waves and currents was greater than in the ebb tide, as well as the gran size of the collected sediments and height of waves. In the three sectors, the amount of sediment coming on the beach (from the swash) was greater than the amount of sediment coming out (from the backwash), except for the collection made in the eastern sector during the ebb tide. This sector presented erosive characteristics, as well as the central sector. The western sector presented depositional characteristics, since about 50% of the sediments transported to the beach face are deposited in this region and do not return during the backwash of waves.Acesso AbertoOceanografia GeológicaTransporte de SedimentosCorrente transversalCNPQ::CIENCIAS EXATAS E DA TERRA::OCEANOGRAFIA::OCEANOGRAFIA GEOLOGICATrabalho de Curso - Graduação - Monografia