Comparative study of trhee methods used to laboration of declivity charts

Sérgio Campos, Edson Luís Piroli, Renata Cilene Dainese, Zacarias Xavier de Barros, Lincoln Gebring Cardoso

Abstract


The main purpose of this work was to compare three methods applied for the elaboration of the declivity charts of the Ribeirão Agua Fria- Bofete (SP) basin.  Th e comparative analysis of data obtained from manual (Abacus) and digital (GIS-IDRISI and GIS-SPRING) methods revealed a discrepancy.   The GIS method presented lower time of processing, with the possibility of to be even lower with the use of microcomputers of greater processing speed.   The used of more refined grids, although it increases the time spent, it improves the precision of the results.



DOI: https://doi.org/10.5777/paet.v1i1.10