@TechReport{Valeriano:2002:MoDiEl,
author = "Valeriano, M{\'a}rcio de Morisson",
title = "Modelos digitais de eleva{\c{c}}{\~a}o de microbacias elaborados
com krigagem",
institution = "INPE",
year = "2002",
type = "RPQ",
number = "INPE-9364-RPQ/736",
address = "S{\~a}o Jos{\'e} dos Campos",
keywords = "GEOPROCESSAMENTO, microbacia, krigagem, metodologia, topografia,
Modelo Digital de eleva{\c{c}}{\~a}o, Sistemsa de
Informa{\c{c}}{\~a}o Geogr{\'a}fica (SIG),
geoestat{\'{\i}}stica,, Digital Elevation Models (DEM),
watershed, Geographical Information Systems, GIS, kriging,
geostatistical.",
abstract = "O objetivo deste trabalho foi avaliar a krigagem como m{\'e}todo
de forma{\c{c}}{\~a}o de Modelo Digital de eleva{\c{c}}{\~a}o
(MDE)para estudos em microbacias. Os pontos fornecidos pelas
isolinhas digitalizadas foram submetidos aos processos de
amostragem, an{\'a}lise geoestat{\'{\i}}stica e
interpola{\c{c}}{\~a}o, em encadeamento n{\~a}o- linear. os
resultados foram avaliados quanto {\`a} eleva{\c{c}}{\~a}o,
diretamente, e {\`a} declividade calculada em Sistema de
Informa{\c{c}}{\~a}o Geogr{\'a}fica (SIG), em
compara{\c{c}}{\~a}o com MDE gerados mediante
interpola{\c{c}}{\~a}o linear e Inverso do Quadrado da
Dist{\^a}ncia (IQD). Com dados de 6 microbacias de diferentes
caracter{\'{\i}}sticas e relevo e diferentes
especifica{\c{c}}{\~o}es cartogr{\'a}ficas, os MDE krigados
apresentaram boa flexibilidade, representando e modo relativamente
satisfat{\'o}rio as varia{\c{c}}{\~o}es locais das diferentes
{\'a}reas, com fei{\c{c}}{\~o}es harmoniosas e arredondadas bem
como fei{\c{c}}{\~o}es abruptas do terreno. A
aprecia{\c{c}}{\~a}o visual de superf{\'{\i}}cies e perfis de
relevo e a an{\'a}lise de histogramas da declividade levaram
{\`a} conclus{\~a}o de que os interpoladores lineares e IQD, a
despeito de sua popularidade, trazem s{\'e}rias
limita{\c{c}}{\~o}es ao uso dos respectivos MDE na an{\'a}lise
quantitativa de dados topogr{\'a}ficos para microbacias.
ABSTRACT: This research was conducted to evaluate kriging as a
method for the generation of Digital Elevation Models (DEM)for
watershed studies. The points stored by the digitizing of the
contour lines were submitted to sampling, geostatistical analyses
and interpolation procedures, in a non-linear data flux. The
evaluation of the results concerned to the elevation itself and to
the slope angles, calculated by Geographical Information Systems
(GIS), as compared to those obtained from DEM created through
linear interpolation and Inverse Squared Distance (ISD)methods.
Among 6 watersheds with different relief types and cartographycal
data specifications, kriged DEM showed flexibility to yield
relatively adequate representations of the local variations of the
different areas, with round and harmonic features, as well as
abrupt terrain changes. Visual observations of the surfaces and
relief profiles, and analyses of slope results histograms led to
the conclusion that linear and ISD interpolators, despite their
popularity, bring serious limitations to the use of the
correponding DEM for the quantitative analysis of watershed
topographical data.",
affiliation = "{Divis{\~a}o de Sensoriamento Remoto (INPE)}",
copyholder = "SID/SCD",
label = "10320",
language = "pt",
pages = "54",
ibi = "6qtX3pFwXQZ3r59YD6/GPAxC",
url = "http://urlib.net/ibi/6qtX3pFwXQZ3r59YD6/GPAxC",
targetfile = "mde_krig3.pdf",
urlaccessdate = "2024, May 02"
}