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RELAÇÕES ENTRE REDE DE DRENAGEM E SUPERFÍCIES DE APLAINAMENTO SEMIÁRIDAS

Authors: Lima, Kleber Carvalho; Cunha, Cenira Maria Lupinacci Da; Perez Filho, Archimedes;

RELAÇÕES ENTRE REDE DE DRENAGEM E SUPERFÍCIES DE APLAINAMENTO SEMIÁRIDAS

Abstract

Resumo Redes de drenagem intermitentes e efêmeras são variáveis importantes no estudo da evolução geomorfológica de superfícies de aplainamento semiáridas, embora sejam pouco pesquisadas na geomorfologia brasileira. Nessa perspectiva, esse artigo propõe analisar as contribuições da rede de drenagem no processo de evolução de superfícies de aplainamento, tendo como método de análise a abordagem sistêmica. Para isso, identificamos os níveis de aplainamento juntamente com as coberturas superficiais e avaliamos o grau de dissecação do relevo com base na compartimentação geomorfológica e nas características dos canais de drenagem. Os resultados demonstraram que os diferentes estados de conservação e dissecação do aplainamento estão relacionados aos processos realizados por regimes fluviais dessa natureza, assim como a elaboração de compartimentos geomorfológicos está relacionado a diferentes padrões espaciais da rede de drenagem.

Resumen Drenajes fluviales efímeros e intermitentes son variables importantes para la comprensión de la evolución de las superficies de aplanamiento en las zonas semiáridas. Sin embargo, actualmente este tema ha sido poco estudiado en la literatura geomorfológica brasileña. En esta investigación exploramos este tema y hemos identificado los diferentes niveles de la superficie de aplanamiento, analizamos la cobertura superficial y las características de los arroyos y analizamos la disección de las formas del terreno. Los resultados mostraron que los diferentes niveles de conservación y disección de la superficie de aplanamiento son respuestas de los procesos que actúan en los arroyos y la formación de los compartimentos geomorfológicos son respuestas directas de los diferentes patrones espaciales de la red de drenaje.

Abstract Ephemeral and intermittent drainage networks are important factors for the understanding of planation surface evolution in semi-arid areas. Currently, this subject is rarely studied in the Brazilian geomorphological literature. In this paper, we explored this topic and we identified the different levels of planation surface, we analyzed the superficial coverage and the drainage channels characteristics and we analyzed the dissection of landforms. The results showed that the different levels of conservation and dissection of the planation surface is related to the fluvial process, as well as the elaboration of geomorphological compartments is related to different spatial patterns of the drainage network.

Country
Brazil
Keywords

Semi-arid, network, Rede de drenagem, Red de drenaje, Superficie de aplanamiento, Semiárido, Superfície de aplainamento, Planation surface

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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