Superimpositions and connections revealed the relative chronology of palaeoriver channels, irrigation patterns and their associated alluvial landforms. 33.1). Spatial resolution is 11.2 meters per pixel. Contractors included Ball Aerospace & Technologies, Kodak and Fokker Space. Given the mean radiances of Ikonos that are two to three times lower than those of QuickBird, as shown in Tables 2.2 and 2.3, it is not surprising that in practice the interval of ERGAS values is strictly sensor-dependent. Even today, Landsat remains a significant resource for geomorphologists due to its repeat coverage, large scene size and low cost (Smith and Pain, 2009). A MODIS image of the GOM during the DWH spill. A general geomorphological map can emphasise different aspects of landforms (Van Zuidam, 1985): morphology (describing the relief), morphogenesis (describing origin and process), morphochronology (relative dating) and morphoarrangement (describing spatial arrangements and relationships). [260] used MODIS imagery to locate oil spills. Figure 5.42.

A set of two Landsat scenes from different dates (Table 22.2) were acquired to account for the seasonal variability of certain landscape units. Images obtained by (d) LHS method, (e) AWRGB method, (f) AWL method, (g) AWPC method, (h) AWLP method and (i) WiSpeR method.

Building upon the UNEP/FAO matrix, the Mediterranean Desertification Land Use Survey (MEDALUS) technique is also used by some desertification scholars as a robust ecological assessment tool.

No spectral distortion with respect to the resampled original MS data can be noticed. The image shows oil between the DWH rig site and the land (to the north) as well as oil directly to the south. The Desertification Development Paradigm (DDP) outlined by Reynolds et al.

A four-band radiometrically-corrected pan-sharpened Quickbird-2 satellite image acquired on 5th of May 2008 that covers the study area was chosen to conduct research objectives of this study (Fig. Google Earth provides worldwide, free-to-access imagery, partly at high resolution (http://earth.google.com). Another group used the SST (sea surface temperature) information in the infrared from MODIS to detect oil spills [266]. Figure 33.2.

The values of Q4 are slightly lower than those measured on the fused QuickBird images, as expected, since band-to-band scores are less favourable as well. We can see that the spatial detail is almost equal to the ideal image, and the colour of the image is very close to the ideal one. Dryland moisture regimes generally dictate what plants can survive in these arid regions and any departures or variations from these species-specific norms are considered a sign of human influence and/or potential degradation (Veron et al., 2006; see also Linstadter and Baumann, 2013; Prince et al., 2007; Hein and De Ridder, 2006). If possible, a Normalized Difference Vegetation Index (NDVI) value typically is calculated from the sensor data, specifically the infrared (NIS) and visible red (VIS) bands, as a measure of biomass productivity. The black lines in the ice are either sediment or oil.

M. Fingas, C.E. Aerial photos can be helpful for temporal sequencing, but they remain limited by coverage extents and availability within the dryland areas and, as Hirche et al. Figure 5.43.

.

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