gov
Trata-se de um conjunto de informações gráficas (pontos, linhas e polígonos) e alfanuméricas, georreferenciadas, interpretadasem escala 1:250.000, que retratam características geomorfológicas da Folha SE.23 conforme metodologia contida no Manual Técnicode Geomorfologia (ftp://geoftp.ibge.gov.br/documentos/recursos_naturais/manuais_tecnicos/manual_tecnico_geomorfologia.pdf). São delineados e descritos polígonos de modelados de relevo contendo suanatureza genética, Unidade e Região Geomorfológica e o Domínio Morfoestrutural no qual estão inseridos. Também são representadas,por linhas e pontos, as principais formas de relevo encontradas no país.A metodologia descrita no Manual Técnico de Geomorfologia é uma evolução dos procedimentos metodológicos adotados pelo projetoRADAMBRASIL no mapeamento geomorfológico do Brasil na escala de 1:1.000.000. O processo de elaboração dos mapas consistedas seguintes etapas: (1) estudo preliminar da área com a aquisição de bibliografia, documentos cartográficos e produtosde sensoreamento remoto, (2) elaboração de mapa geomorfológico preliminar com a análise da drenagem e delimitação de modeladose formas de relevo, apontando os locais de dúvida e de interesse para a terceira etapa, (3) atividade de campo, que tem comoobjetivo, além de solucionar dúvidas, o reconhecimento de características do relevo com preenchimento de formulários de campoe registros fotográficos, (4) reinterpretação do mapeamento com base nas informações obtidas em campo, e (5) armazenamentodas informações gráficas e alfanuméricas em banco de dados para posterior consulta, tratamento e/ou edição.
ver Fonte/+info (dt.atualização: 12/06/2018)
FID |
GeomorfologiaSE23.fid-6d9cbe3e_18e3b3f16e6_-5cea |
Folha |
SE23 |
Legenda_Completa |
519Dt31 |
Nome_Dominio |
Bacias e Coberturas Sedimentares Fanerozóicas |
Nome_Regiao |
Depressões do São Francisco |
Identificacao_Unidade |
519 |
Nome_Unidade |
Depressão do Alto Rio São Francisco |
Letra_Simbolo |
Dt |
Categoria |
Homogênea tabular |
Natureza |
dissecação |
Caracteristica |
dissecação homogênea ou diferencial |
Forma |
topo tabular |
Densidade_Drenagem |
média |
Aprofundamento_Incisoes |
muito fraco : até 50m |
Nivel_Altimetrico |
|
Legenda |
Depressão do Alto Rio São Francisco |
Area_Poligono_Km2 |
44.158 |
the_geom |
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