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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 6 - MARITIME HYDRAULICS AND COASTAL ENGINEERING : Hydrodynamic Circulation in the Maracan∆ Estuary (Par† State ? Amazon Region), with Computer Modelin...
Hydrodynamic Circulation in the Maracan∆ Estuary (Par† State ? Amazon Region), with Computer Modeling
Author : El-Robrini Maamar and Leandro Patrick Ferreira Barbosa
The Atlantic Coast of Par† State is cut by a large number of estuaries. The Am climate (Humid Tropical), is hot and humid, with average annual temperature ranges between 24 ÝC and 26 ÝC and relative air humidity ranging 80 % to 90 %. It has two distinct periods: less rainy (June to November) -1 and rainy (December-May), with rainfall 2.500 mm to 3.000 mm yr . This paper shows the patterns of the neap and spring tides movement in the Maracan∆ estuary, using field data (tides: currents and amplitude) and SisBahia Program as a tool to generate scenarios (high tide, low tide, half flood tide, half ebb tide) in 3 4 3 -1 usual wind. The Maracan∆ estuary flow is 10 to 10 m s at his mouth, has macro-tidal (> 4 m), half-day, -1 -1 winds (average of 6 m s ) and tide flow (average of 0,69 m s in the NE-SW direction). During the -1 spring tide (0 to 1.17 m s ), the speed of the currents is higher when compared with those of square (0 to -1 -1 0.91 m s ). SisBahia model results (slake of the flood spring tide: 0.37 m s ; slake of low of spring tide: -1 -1 -1 0.44 m s , half of flood spring tide: 0.82 m s and a half of ebb spring tide: 1.17 m s ) were not -1 -1 measured in the same field (slake of flood spring tide: 0.17 m s ; slake of low tide spring: 0.13 m s , half -1 -1 flood of spring tide: 1.93 m s and half ebb spring tide: 2.58 m s ), because of the complexity of the area. The speeds of the tidal currents acquired in the field are compatible with data generated by SisBahia. The geometry of the Maracan∆ estuary contributes to higher the tide in the middle estuary (5.69 m) than at the upper and middle limit (5.51 m).
File Size : 1,758,251 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 6 - MARITIME HYDRAULICS AND COASTAL ENGINEERING
Date Published : 18/07/2016
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