STUDY OF THE LANDFORMS OF THE IBICUÍ RIVER BASIN WITH USE OF TOPOGRAPHIC POSITION INDEX

Authors

DOI:

https://doi.org/10.20502/rbg.v19i2.1383

Keywords:

Basin, Landforms, Topographic Position Index, Geomorphometry

Abstract

The Topographic Position Index (TPI) is an algorithm which calculates the difference of the elevation between a central pixel ( and the mean of the elevation of its surroundings () surroundings defined by of a radius determined by the user. The study was developed in the Ibicuí Basin, located in the west of Rio Grande do Sul, with a surface area of 46,602.58 km², with a perimeter of 1,268.76 km and an 8th order hierarchy. The TPI analysis associated with inclination determined 08 landforms elements in the BHRI: flat area elements, top elements identified as flat and wavy, springs, slopes and the footslopes and channel elements that can be closed or opened.

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Author Biography

Romario Trentin, Universidade Federal de Santa Maria

Possui graduação em Geografia, mestrado em Geografia e doutorado em Geografia (2011). Atualmente é Professor Adjunto da Universidade Federal de Santa Maria. Tem experiência na área de Geociências, com ênfase em Geotecnologias. Atuando principalmente nos seguintes temas:Bacia Hidrográfica, Arenização, Geomorfologia, Uso e Ocupação da Terra, Caracterização Geoambiental.

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Published

2018-04-01

How to Cite

Trentin, R., & Robaina, L. E. de S. (2018). STUDY OF THE LANDFORMS OF THE IBICUÍ RIVER BASIN WITH USE OF TOPOGRAPHIC POSITION INDEX. Revista Brasileira De Geomorfologia, 19(2). https://doi.org/10.20502/rbg.v19i2.1383

Issue

Vol. 19 No. 2 (2018): ABR - JUN

Section

Articles

License

Author (s) retain copyright and grant the journal right of first publication with the work simultaneously licensed under the Creative Commons Attribution License that allows sharing the work with recognition of its initial publication in this journal.