Determinación de la precisión de DEMs generados con puntos digitalizados a partir de cartografía existente
Basic information about watershed relief, drawn from analytical-descriptive methodologies, allows for the physical parameters necessary to the study of natural resources, such as watershed integrated management, environmental impact, soil degradation, deforestation, water resource conservatio...
Guardado en:
| Publicado en: | Revista de la Facultad de Ciencias Agrarias |
|---|---|
| Autores principales: | , , , , , , , , , , , , |
| Materias: | |
| Acceso en línea: | https://bdigital.uncu.edu.ar/fichas.php?idobjeto=3867 |
| Sumario: | Basic information about watershed
relief, drawn from analytical-descriptive
methodologies, allows for the physical
parameters necessary to the study of natural
resources, such as watershed integrated
management, environmental impact, soil
degradation, deforestation, water resource
conservation, among others. All these
processes linked to a strong spatial component
allow the use of geographic information
systems. Digital elevation models (DEMs) and
their derivatives are an important component of
these data sources. In this work we evaluated
DEMs generated from indirect source data
(digitized points from existing contour maps) to
determine whether elevation accuracy varies
with DEM spatial resolution (grid size). We
also assessed the possible existence of some
interaction between grid size and the software
used that could influence the altimetric quality
of the DEM. It was concluded that spatial
resolution affects DEM quality. We also found
that it is possible to find an ideal grid size in
terms of the altimetric accuracy and computer
weight size of the generated DEM. Regarding
the existence of an interaction between grid
size and the software used, which could affect
the quality of models obtained based on the
methodology of source data acquisition, we
found that this possibility does exist when the
database is generated from digitized points. |
|---|
