Wind Erosion in Western Queensland Australia

hand column) presents trajectories for circular potential dust sourceareas with radii from 25 to 150 km. 5b (right hand column) presentstrajectories for potential dust source areas (radius 100 km) oriented tothe north, south, east and west around the stations ........................................148Figure 5.6 Time series trajectories of mean annual AUSLEM output for 100 kmwindows and annual total dust-event frequencies (all event types) forthe eight meteorological stations used in model validation. Solid linesrepresent AUSLEM output trajectories and dashed lines representdust-event frequencies ...................................................................................151Chapter 6: Assessing Land Susceptibility to Wind Erosion: Validation ofthe Australian Land Erodibility ModelFigure 6.1 Location map showing major bioregions, Landsat ETM+ image scenesused for model validation, transect observation tracks for datacollected in September 2006, and vegetation cover calibration sites: 1)‘Croxdale’, 2) ‘Lake Bindegolly’, 3) ‘Ethabuka’ (sand dune crest), 4)‘Ethabuka’ (dune swale), 5) ‘Diamantina National Park’, 6)‘Spoilbank’.....................................................................................................158Figure 6.2 Calibration regression of field estimates of herbaceous vegetationcover versus recorded cover based on 24 calibration tests (October2005 to May 2007).........................................................................................161Figure 6.3 Example model output image for the Bedourie scene showing visualassessments of land erodibility as an overlay to the model assessments.White areas are non-erodible with tree cover greater than 20%....................163Figure 6.4 Modelled versus observed land erodibility for the five Landsat scenes.The data show the mean ± 1 standard deviation (SD) of the predictedvalues for each observed land erodibility class. The number ofobservations (n) is shown for each class........................................................165Chapter 7: Simulations of the Spatio-Temporal Aspects of Land Erodibilityin the North-East Lake Eyre Basin, Australia, 1980-2006Figure 7.1 Map showing the study area location within the Lake Eyre Basin,Australia, and major geomorphic features relevant to this study...................169xviii