A comparison for a multiscale study of structural lineaments in southern Brazil: LANDSAT-7 ETM+ and shaded relief images from SRTM3-DEM

Abstract

This paper presents a comparison of descriptive statistics obtained for brittle structural lineaments extracted manually from LANDSAT images and shaded relief images from SRTM 3 DEM at 1:100,000 and 1:500,000 scales. The selected area is located in the southern of Brazil and comprises Precambrian rocks and stratigraphic units of the Paraná Basin. The application of this methodology shows that the visual interpretation depends on the kind of remote sensing image. The resulting descriptive statistics obtained for lineaments extracted from the images do not follow the same pattern according to the scale adopted. The main direction obtained for Proterozoic rocks using both image types at a 1:500,000 scale are close to NS±10, whereas at a 1:100,000 scale N45E was obtained for shaded relief images from SRTM 3 DEM and N10W for LANDSAT images. The Paleozoic sediments yielded the best results for the different images and scales (N50W). On the other hand, the Mesozoic igneous rocks showed greatest differences, the shaded relief images from SRTM 3 DEM images highlighting NE structures and the LANDSAT images highlighting NW structures. The accumulated frequency demonstrated high similarity between products for each image type no matter the scale, indicating that they can be used in multiscale studies. Conversely, major differences were found when comparing data obtained using shaded relief images from SRTM 3 DEM and Landsat images at a 1:100,000 scale.

Application of morphometry in neotectonic studies at the eastern edge of the Paraná Basin, Santa Catarina State, Brazil

“…In addition, optical remote sensing images (LANDSAT ETM + and ASTER-Table 2) were useful in the extraction of linear features related to relief and geomorphology. Further information about the image processing applied in LANDSAT ETM + and SRTM images can be find in Jacques et al (2012).…”

“…The extraction of brittle linear relief features was done manually based on the visual interpretation of shaded relief images, with the application of artificial lighting to the SRTM DEM at a scale of 1:100,000 (Jacques et al, 2010(Jacques et al, , 2012. These data were compared with the features obtained by the isobase and HG maps, and the common lineaments to both types of data (SRTM × isobase or SRTM × HG) were interpreted as possibly associated to recent tectonic events.…”

“…B-Detail of lithological units in the study area. C-Lineaments extracted from SRTM images (1:100,000 scale) (Jacques et al, 2010(Jacques et al, , 2012. D-Drainage obtained for the construction of isobase and hydraulic gradient maps.…”

“…The E-W lineaments were developed during the break-up of Gondwana, and therefore have been active since the Triassic period, as have many of the NWtrending faults, whereas the NE-trending faults have apparently remained inactive (Zalán et al, 1987(Zalán et al, , 1990. Jacques et al (2010Jacques et al ( , 2012, studying the structural lineaments along the eastern margin of the Paraná Basin and its basement in Santa Catarina by means of digital products (LANDSAT and SRTM images on 1:100,000 and 1:500,000 scales), defined the directions as follows: N-S and NNE-SSW (basement), NW-SE and N-S (Gondwana I Supersequence) and NE-SW and NW-SE (Gondwana III Supersequence -Serra Geral Formation) and concluded that SRTM 1:100,000 has the best results for the extractions of brittle lineaments (Fig. 1C).…”

Geoprocessamento aplicado ao monitoramento ambiental, texto: análise quantitativa de parâmetros biofísicos de bacia hidrográfica obtidos por sensoriamento remoto

“…Monitorar parâmetros ambientais pode ser relevante em vários domínios, como na saúde humana, na redução de poluição no ambiente ou na preservação de produtos perecíveis (Oprea et al, 2012). De acordo com Jacques (et al, 2012): "O uso de imagens feitas com sensoriamento remoto promove o avanço no conhecimento relativo à metodologia de processamento de dados aplicados nas geociências".…”