Determination of the minimum tether of the Tocantins and Araguaia waterway

Authors

  • Marcelo de Miranda Reis Exército Brasileiro, Instituto Militar de Engenharia. Rio de Janeiro, RJ, Brasil.
  • Cassia Vanessa de Castro Exército Brasileiro, Instituto Militar de Engenharia. Rio de Janeiro, RJ, Brasil.
  • José Carlos Cesar Amorim Exército Brasileiro, Instituto Militar de Engenharia. Rio de Janeiro, RJ, Brasil.

Keywords:

Permanence curve, Minimum depth, Gumbel, Weibull, Waterway

Abstract

A calculation of the depth of fluid flow in the fluviometrics stations located in the Tocantins and Araguaia Waterway is presented with 90%of the minimum annual water level in a recurrence time of 10 years. For the data analysis the Gumbel and the Weibull statistics methods were used. This study is important to determine the navigability conditions of the waterway in locations that are navigable through most of the year and in parts that need dredging works. To proper calculate the dredging volumes it is necessary to know the minimum depth of flow with 90% of the minimum annual water level in a recurrence time of 10 years. The results obtained with the Weibull distribution show a tendency for smaller water levels when compared with the results obtained with the Gumbel distribution.

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Published

2022-01-19

How to Cite

Reis, M. de M., Castro, C. V. de, & Amorim, J. C. C. (2022). Determination of the minimum tether of the Tocantins and Araguaia waterway. Revista Militar De Ciência E Tecnologia, 38(4), 26–36. Retrieved from https://ebrevistas.eb.mil.br/CT/article/view/9038