@Article{PolizelRoss:2014:CaMoDe,
author = "Polizel, Silvia Palotti and Rossetti, Dilce de F{\'a}tima",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
title = "Caracteriza{\c{c}}{\~a}o morfol{\'o}gica do delta do rio Doce
(ES) com base em an{\'a}lise multissensor",
journal = "Revista Brasileira de Geomorfologia",
year = "2014",
volume = "15",
number = "2",
pages = "311--326",
keywords = "mapeamento geomorfol{\'o}gico, delta do rio doce, sensoriamento
remoto.",
abstract = "A costa leste brasileira apresenta uma sucess{\~a}o de sistemas
deltaicos, sendo o delta do rio Doce, localizado no Estado do
Esp{\'{\i}}rito Santo, um dos mais expressivos. A
prograda{\c{c}}{\~a}o principal deste delta, de geometria
cuspidada t{\'{\i}}pica de deltas de onda, tem sido
atribu{\'{\i}}da {\`a} queda do n{\'{\i}}vel do mar que se
seguiu {\`a} transgress{\~a}o holoc{\^e}nica m{\'e}dia.
An{\'a}lises preliminares de novos produtos de sensoriamento
remoto disponibilizados nesses {\'u}ltimos anos mostraram o
potencial de aprimoramento do mapa geomorfol{\'o}gico desse
delta, que pode contribuir para a melhor
reconstitui{\c{c}}{\~a}o paleoambiental e evolu{\c{c}}{\~a}o
desse sistema eposicional. Assim, este trabalho teve por objetivo
fornecer um mapa geomorfol{\'o}gico detalhado para a
plan{\'{\i}}cie costeira do rio Doce com base em dados
multissensores integrando Modelo Digital de Eleva{\c{c}}{\~a}o
(MDE) do Shuttle Radar Topography Mission (SRTM), Phased Array
type L-band Synthetic Aperture Radar (PALSAR) do Advanced Land
Observing Satellite (ALOS), imagens TM/Landsat, al{\'e}m de
imagens {\'o}ticas de alta resolu{\c{c}}{\~a}o
extra{\'{\i}}das do Google EarthTM. O mapeamento
geomorfol{\'o}gico feito por interpreta{\c{c}}{\~a}o visual
resultou no estabelecimento de seis classes principais, designadas
de: 1) drenagem atual; 2) cord{\~a}o litor{\^a}neo/spit; 3)
paleocanal; 4) plan{\'{\i}}cie interdistribut{\'a}ria; 5)
fl{\'u}vio-estuarino/lagunar/marinho raso; e 6) terra{\c{c}}o
fluvial. De maneira geral, o emprego combinado dos produtos de
sensoriamento produziu resultados satisfat{\'o}rios para a
separa{\c{c}}{\~a}o dessas classes. O MDE-SRTM contribuiu para a
identifica{\c{c}}{\~a}o somente da classe paleocanais. As
imagens PALSAR foram {\'u}teis na identifica{\c{c}}{\~a}o das
classes cord{\~a}o litor{\^a}neo/spit, paleocanal,
fl{\'u}vio-estuarino/lagunar/marinho raso e terra{\c{c}}o
fluvial. As imagens TM/Landsat possibilitaram o reconhecimento das
classes drenagem atual, cord{\~a}o litor{\^a}neo/spit,
plan{\'{\i}}cie interdistribut{\'a}ria e fl
{\'u}vio-estuarino/lagunar/marinho raso. O mapa
geomorfol{\'o}gico contribuiu na caracteriza{\c{c}}{\~a}o mais
adequada dos v{\'a}rios subambientes do delta do rio Doce,
consequentemente auxiliando na reconstru{\c{c}}{\~a}o de sua
din{\^a}mica sedimentar. Assim, sustenta-se que a
evolu{\c{c}}{\~a}o desse delta se processou de maneira
epis{\'o}dica, com oscila{\c{c}}{\~o}es entre fases
progradacionais, que resultaram na forma{\c{c}}{\~a}o dos
cord{\~o}es litor{\^a}neos/spits, e fases transgressivas, que
resultaram nos dep{\'o}sitos
fl{\'u}vio-estuarinos/lagunares/marinho rasos. Al{\'e}m disto,
diferentemente de outros deltas de onda formados ao longo da costa
brasileira, o deltado rio Doce foi alimentado por canal principal
inst{\'a}vel, o que gerou uma sucess{\~a}o de paleocanais em sua
plan{\'{\i}}cie costeira central. Como consequ{\^e}ncia dessa
din{\^a}mica, houve a forma{\c{c}}{\~a}o de um volume signifi
cativo de dep{\'o}sitos de plan{\'{\i}}cie
interdistribut{\'a}ria no entorno dos canais, que
contribu{\'{\i}}ram conjuntamente para a destrui{\c{c}}{\~a}o
dos cord{\~o}es litor{\^a}neos/spits em grande parte do delta.
Ilhas desses dep{\'o}sitos em meio a dep{\'o}sitos de
plan{\'{\i}}cie interdistribut{\'a}ria documentam que, no
passado, os cord{\~o}es litor{\^a}neos/spits ocorriam em toda a
extens{\~a}o da plan{\'{\i}}cie deltaica, tendo sido formados
desde as fases iniciais do processo de prograda{\c{c}}{\~a}o.
Esses dados n{\~a}o s{\~a}o, portanto, condizentes com modelo
vigente de delta lagunar nos est{\'a}gios iniciais de
prograda{\c{c}}{\~a}o desse sistema deposicional. ABSTRACT:
Brazils eastern coast has a succession of deltaic systems, with
the Doce River delta, located in the State of Esp{\'{\i}}rito
Santo, being one of the most expressive. The main progradation of
this delta, which has a cuspate geometry typical of wave-dominated
deltas, has been attributed to a relative sea-level fall that
followed the middle Holocene transgression. Preliminary analyses
of new remote sensing products available in recent years have
shown the potential to improve the geomorphological map of this
delta, which can contribute to better reconstruct the
paleoenvironment and the evolution of this depositional system.
Thus, this study aimed to provide a detailed geomorphological map
of the coastal plain of the Doce River based on multisensor data
integrating Digital Elevation Model (DEM) from the Shuttle Radar
Topography Mission (SRTM), Phased Array type L -band Synthetic
Aperture Radar (PALSAR) of the Advanced Land Observing Satellite
(ALOS), TM/Landsat images, and high-resolution optical images
derived from Google EarthTM. The geomorphological mapping made by
visual interpretation resulted in the establishment of six main
classes, designated as: 1) modern drainage; 2) beach ridge/spit;
3) paleochannel; 4) interdistributary plain; 5) fl
uvio-estuarine/lagunar/shallow marine; and 6) fl uvial terrace. In
general, the combined application the remote sensing data produced
satisfactory results for this classifi cation. The DEM-SRTM helped
identify only the paleochannel class. The PALSAR images were
useful in identifying classes of beach ridge/spit, paleochannel,
fluvio-estuarino/lagunar/shallow marine and fluvial terrace. The
TM/Landsat images allowed the recognition of the classes modern
drainage, beach ridge/spit, interdistributary plain and
fluvio-estuarino/lagunar/shallow marine. The geomorphological map
contributed to a more precise characterization of the several
subenvironments of the Doce River delta, thus helping the
reconstruction of its sedimentary dynamics. Thus, it is argued
that the evolution of this delta occurred episodically, with
oscillations between progradational phases that resulted in the
formation of coastal beach ridges/spits, and transgressive phases
that resulted in fluvio-estuarine/lagunar/shallow marine deposits.
Moreover, unlike other wave-dominated deltas formed along the
Brazilian coast, the Doce River delta was fed by a highly unstable
channel, which generated a succession of palaeochannels in the
central coastal plain. As a result of this dynamic, there was the
formation of a signifi cant amount of interdistributary plain
deposits surrounding the channels, which together contributed to
the destruction of beach ridges/spits in great part of the delta.
Islands of these deposits in the middle of interdistributary plain
deposits attest the development of beach ridges/spits throughout
the length of the deltaic plain, implying in their formation since
the initial stages of delta progradation. These data are,
therefore, not consistent with the current model of lagoonal delta
in the early stages of development of progradation of this
depositional system.",
issn = "1519-1540",
label = "lattes: 0307721738107549 2 PolizelRoss:2014:CaMoDe",
language = "pt",
urlaccessdate = "02 maio 2024"
}