STUDY OF THE LANDFORMS OF THE IBICUÍ RIVER BASIN WITH USE OF TOPOGRAPHIC POSITION INDEX
<p>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, locat...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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União da Geomorfologia Brasileira
2018-04-01
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| Series: | Revista Brasileira de Geomorfologia |
| Subjects: | |
| Online Access: | http://www.lsie.unb.br/rbg/index.php/rbg/article/view/1383 |
| Summary: | <p>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.</p> |
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| ISSN: | 1519-1540 2236-5664 |