LANDSAT images

Royals Inc for providing Landsat images of the study area. To Dr. Derek Rogge Research Associate University of Victoria for clarifying my doubts in the fundamental remote sensing principals. 

Regarding Amazon deforestation, the largest deforestation rates are observed in southwestern and eastern Amazonia, the so-called Deforestation Arc. The Instituto Nacional de Pesquisas Espaciais (INPE) of Brazil developed the Deforestation Project (in Portuguese, PRODES Programa de Monitoramento de Desflorestamento na Amazonia) based on LANDSAT images for... 

Mertes et al. (1993) estimated concentrations of suspended sediment in the surface waters of the Amazon River and adjacent floodplain from Landsat images. They documented patterns of decreasing concentration from the main channel onto the floodplain and through channels. Rates of sediment transport into the floodplain were estimated by combining the Landsat-derived sediment concentrations with hydraulic calculations (Mertes 1994). 

Meites, L. A. K., M. O. Smith, and J. B. Adams. 1993. "Estimating suspended sediment concentrations in surface waters of the Amazon River wetlands from Landsat images." Remote Sensing of Environment 43 281-301. 

Fig. 2. Chl-a Scatter Plot with r = 0.58 for 5/16/05 DC ALI Image and Chl-a Scatter Plot with r = 0.20 for 5/9/05 DC Landsat Image...

Under the currect conditions, the general spatial pattern did not change much, as illustrated by a sequence of Landsat images for winter 2002/2003 (Fig. 3). By the end of December 2002 the Small Aral and the region north of the former... 

Fig. 3 Ice cover evolution during winter 2002/2003. Landsat images for 26 December 2002 (a), 18 January 2003 (b), 27 January 2003 (c), 07 March 2003 (d) and 01 April 2003 (e). Landsat imagery is from USGS Global Visualisation Viewer (http //glovis.usgs.gov, accessed 09 July 2008)...

Ice from the polar plateau still occurs in the Wright Upper and Taylor glaciers, but only the Ferrar and KoettUtz valleys contain continuous outlet glaciers that discharge ice from the polar plateau into McMurdo Sound (Adapted from the Landsat Image Mosaic of Antarctica (LIMA) http //Iima.usgs.gov)... 

Brandao, A., Jr., Souza, C., Jr. (2006). Mapping unofficial roads with Landsat images A new tool to improve the monitoring of the Brazilian Amazon rainforest. International Journal of... 

Features Extraction from Satellite Data, Fig. 3 Original Landsat image left) and two computed nonlinear principal components center and right)... 

Fig. 1. Landsat TM image showing the study area (red box in southwest corner is the study area), western Desert Egypt.

Fig. 2. Landsat TM image (Bands 7,4,2) for the study area outlined in Fig. 1...

One key difference between this application area and the previous two is that the image is usually a representation of a real object. It might be a LANDSAT photograph or a dental x-ray that needs to be enhanced. The problem that is dealt with here is not necessarily the display of the image - though that factor is here - but rather the use of graphics to extract more information from the data. 

Fig. 8.2. Landsat TM image of the central portion of the Chico Mendes Extractive Reserve in eastern Acre, Brazil. The white line outlines the boundary of the reserve. North is to the top of the image, which covers about 90 km x 90 km. Xapuri is the local urban center. The light areas are deforested lands, principally large cattle ranches. The national highway BR-317 threads through the center of the deforested lands along the eastern side of the image. Data is from August 1989, TM bands 3, 4, and 5.

Inflow of the turbid, nutrient-rich water of the Amazon River onto the floodplain helps sustain the floodplain s high fertility (Fisher and Parsley 1979, Setaro and Melack 1984, Engle and Melack 1993). The inflows follow complex flow paths that account, in part, for differences in productivity among floodplain lakes. For example, Melack et al. (1992) analyzed a rare cloud-free Landsat Multispectral Scanner (MSS) image of the initial stages of riverine inundation by the Amazon River which illustrated the complexity of the flow... 

Fig. 1. (a) Simplified regional map showing the position of the Zimbabwe Craton, greenstone belts, major shear zones as visible on Landsat TM images (e.g. RGB741), and orogenic belts. The shear zones may represent terrane boundaries and/or late strike-slip fault zones. Numbers refer to greenstone belt names. 

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