Artículo
Comparison of bathymetric features detected by ERS2 SAR and LANDSAT TM DATA over San Matias gulf, Argentina
Fecha de publicación:
01/2004
Editorial:
Ediciones Univ
Revista:
Gayana (Concepción)
ISSN:
0717-652X
e-ISSN:
0717-6538
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
It is well known that Synthetic Aperture Radar (SAR) is capable of imaging bathymetric features by detecting changes in sea surface roughness associated with bathymetry-induced surface current modulations. The high dynamic range of
LANDSAT Thematic Mapper (TM) and Enhanced TM+ (ETM+) sensors allow them to observe oceanic surfaces affected by solar specular reflection, or sun glint, without being saturated. This ability allows the imaging of sea surface roughness patterns in the sun glint affected area that are associated with surface current changes such as those produced by bathymetric features. ERS SAR and LANDSAT TM/ETM+ images obtained over the San Matías Gulf, Argentina during similar tidal current conditions are compared and the surface signature generated by the interaction of the tidal current with the bottom topography analyzed. Each type of sensor presents advantages and limitations to the observation of bottom features due to the way each one detects sea surface roughness. Still, when sun glint is present, TM/ETM+ and SAR show similar bathymetric patterns under the same tidal conditions. While both sensors provide consistent information over significant bathymetry features, increased differences in the detection is observed over weaker features.
Palabras clave:
Ers-2
,
Landsat Tm
,
Bathymetric
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IAFE)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Citación
Gagliardini, Domingo Antonio; Dogliotti, Ana Inés; Karszenbaum, Haydee; Grings, Francisco Matias; Comparison of bathymetric features detected by ERS2 SAR and LANDSAT TM DATA over San Matias gulf, Argentina; Ediciones Univ; Gayana (Concepción); 68; 2; 1-2004; 201-208
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