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Previous issue date: 2016-10-28 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A plataforma continental adjacente a cidade de Areia Branca no estado do Rio Grande do
Norte possui diferentes formas de fundo marinho, incluindo o vale inciso Apodi-Mossor?. O
interesse de caracterizar esta fei??o se deu por ela abrigar as instala??es do terminal salineiro de
Areia Branca, mais conhecido como Porto Ilha de Areia Branca, que se constitui hoje no ?nico
meio economicamente vi?vel de escoamento de grandes volumes de sal do Estado para as
ind?strias qu?micas do pa?s e pelas indica??es que esta ?rea pode fornecer sobre varia??es
morfol?gicas, assim como a possibilidade de espalhar e abrigar quantidades de hidrocarbonetos
no c?nion submerso em caso de vazamentos acidentais de ?leo devido ao intenso tr?fego de navios
de grande porte para o embarque e desembarque de sal na regi?o. De acordo com essa realidade o
principal objetivo desta tese foi a detec??o da batimetria submersa do C?nion Apodi-Mossor?
utilizando dados ?in situ? e geotecnologias multifontes, incluindo ferramentas do Sensoriamento
Remoto para a estima??o de batimetria a partir de imagens de sat?lite Landsat 7 ETM+ (2014) e
Landsat 8 OLI (2015). A metodologia utilizada incluiu o uso de cartas n?uticas, dados
batim?tricos, interpola??o dos dados por Krigagem e Vizinho Natural e a integra??o de imagens
de sat?lite. Estatisticamente houve diferen?as entre os dois m?todos interpoladores usados, a
Krigagem revelou uma associa??o linear positiva e superestima??o dos dados de Batimetria in situ
com os dados da Carta n?utica, e uma associa??o inversa e subestima??o de dados pelo m?todo
Vizinho Natural, por?m ambos apresentaram mapas batim?tricos com bons contornos visuais. Os
resultados obtidos a partir dos mapas batim?tricos indicaram que o vale inciso Apodi-Mossor?
sofreu uma constante remobiliza??o de sedimentos, evidenciando ?reas com menores
profundidades para a navega??o de 2009 para 2010, incluindo a bacia de evolu??o do Porto Ilha e
trechos de navega??o principal, necessitando assim de dragagens peri?dicas para evitar a colis?o
e encalhe dos navios. A aquisi??o, processamento, integra??o e interpreta??o das imagens de
sat?lite correlacionados com os mapas de morfologia de fundo possibilitaram confirmar que o vale
inciso Apodi-Mossor? possui uma forma de letra "J", na sa?da ao norte, faz uma inflex?o para
Leste, devido um gradiente submerso bastante evidente no mapa. Entre a plataforma m?dia e
interna foi poss?vel observar diferentes formas de fundo, incluindo fundo plano, recifes isolados e
campo de dunas submersas, sendo formado tamb?m por dois canais, denominados de canal raso e
canal profundo, que apresentam caracter?sticas morfol?gicas e sedimentol?gicas distintas. E
finalmente, observou-se que o uso de dados para estima??o de batimetria por imagem Landsat tem
v?rias vantagens, neste estudo o sensor ETM+ forneceu uma cobertura bidimensional cont?nua
melhor que a do sensor OLI, e a aplica??o deste m?todo, de f?cil execu??o, pode ser de grande valia para regi?es onde n?o existem dados batim?tricos ou estes estejam desatualizados, ou mesmo
sem a acur?cia das cartas n?uticas, mapas como os gerados neste trabalho s?o de utilidade tanto
para o planejamento de estudos e para a modelagem ambiental, quanto para a seguran?a da
navega??o de embarca??es de grande porte. / The continental shelf adjacent to the city of Areia Branca in the state of Rio Grande do
Norte has different forms of seabed, including the incised valleys of Apodi-Mossor?. The interest
to characterize this feature was given by to host the facilities of the salt terminal of Areia Branca,
known as Harbor Island of Areia Branca, which today constitutes the only way economically
viable for send flow of large volumes of salt for chemical industries of country and indications
that this area can provide on morphological variations and as wel as the possibility of spreading
and shelter of quantities of hydrocarbons in the submerged canyon in case of accidental oil spills
due to traffic of large ships for loading and unloading salt in the area. According to this fact the
overall objective of this thesis was the detection of submerged bathymetry of the Canyon Apodi-
Mossor? using data "in situ" and geotechnology multi-sources, including remote sensing tools for
estimating bathymetry from Landsat satellite images with sensors ETM + (2014) and OLI (2015).
The methodology included the use of nautical charts, bathymetric data, data interpolation by
kriging and Natural Neighbor and integration of satellite images. Statistically there were
differences between the two used interpolation methods, the Kriging revealed a positive linear
association and overestimation of data Bathymetric situ with data from the Nautical Chart, and an
inverse association and underestimation of data by the Natural Neighbor method, but both showed
bathymetric maps with good visual contours. The results obtained from bathymetric maps
indicated that the incised valleys Apodi-Mossor? suffered a constant remobilization of sediment,
showing areas with shallower depths for the 2009 navigation for 2010, including the evolution
basin of the Island Port and main navigation sections, thus requiring periodic dredging to avoid
collision and stranding of ships. The acquisition, processing, integration and interpretation of
satellite images correlated with the bottom morphology map allowed to confirm that the incised
valleys Apodi-Mossor? has a form letter "J" at the exit to the north, and a shift eastwards due a
submerged gradient quite evident on the map. Between the middle and inner platform was possible
to observe different background shapes including flat bottom, isolated reefs and submerged field
of dunes, the results also indicate that the incised valleys are formed by two channels, called
shallow channel and deep channel, which have distinct morphological and sedimentological
characteristics. And finally, it was observed that the use of data for bathymetry estimation Landsat
has several advantages, in this study the ETM + sensor provided a better continuous twodimensional
coverage that the OLI sensor, and the application of this method, easy to perform, can
be of great value for regions where there are no bathymetric data or they are outdated, or even without the accuracy of nautical charts, maps such as those generated in this study are useful both
for planning studies and environmental modeling and as well as for security to the navigation of
large ships.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/24148 |
| Date | 28 October 2016 |
| Creators | Sousa, Luciana Silva de |
| Contributors | 35385839191, Vieira, Marcela Marques, 83933212715, Ara?jo, Eduardo Henrique Silveira de, 10659447487, Carmo, Marcelo Jos? do, 07649233820, Souto, Michael Vandesteen Silva, 02875232410, Amaro, Venerando Eustaquio |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM CI?NCIA E ENGENHARIA DE PETR?LEO, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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