Wind Erosion in Western Queensland Australia

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Chapter 5 – Land Erodibility Model DevelopmentFigure 5.5 Examples of time series trajectories of mean annual AUSLEM output for three stations(Quilpie, Thargomindah and Windorah). 5a (left hand column) presents trajectories for circularpotential dust source areas with radii from 25 to 150 km. 5b (right hand column) presents trajectoriesfor potential dust source areas (radius 100 km) oriented to the north, south, east and west around thestationsTable 5.2 presents results of the cross-correlation analysis between dust-event frequenciesand mean and maximum AUSLEM output at multiple spatial scales for the circular AOIs.Like the dust-event frequencies, modelled land erodibility at each station has a distinct timeseries trajectory. Significant improvements in correlations with the directional AOI data werenot found due to the similarity of the time series trends to those from the circular AOIs. Thecomparison of model output with the directional AOI data therefore did not provide furtherinformation on how the model was performing so the results are not shown here. AUSLEM148
Chapter 5 – Land Erodibility Model Developmentoutput trajectories show strong correlations (r 2 > 0.67, p < 0.05) with annual dust-eventfrequency groups at four stations: Boulia, Charleville, Urandangie, and Windorah.Table 5.2 Correlation coefficients (r 2 ) for the cross-correlation analysis between mean and maximum(max) AUSLEM output at multiple spatial scales (25 to 150 km) and dust-event frequencies for eightstations within the study area. Correlations between AUSLEM output and dust-event frequencies thatare statistically significant (p > 0.05) are boldfacedStation Class 25 km 50km 100km 150kmMean Max Mean Max Mean Max Mean MaxBirdsville All 0.22 0.30 0.36 0.55 0.48 0.58 0.49 0.66NoHz 0.20 0.28 0.33 0.52 0.46 0.55 0.47 0.66NoHzWr 0.17 0.26 0.31 0.51 0.44 0.53 0.46 0.65DSI -0.36 -0.27 -0.25 -0.14 -0.15 -0.07 -0.13 -0.06Boulia All 0.82 0.83 0.85 0.81 0.86 0.72 0.79 0.58NoHz 0.77 0.71 0.82 0.81 0.84 0.75 0.85 0.69NoHzWr 0.77 0.71 0.82 0.81 0.84 0.75 0.85 0.69DSI 0.28 0.27 0.36 0.29 0.45 0.28 0.70 0.63Charleville All 0.92 0.87 0.88 0.41 0.71 0.26 0.45 0.19NoHz 0.94 0.86 0.87 0.34 0.67 0.19 0.37 0.08NoHzWr 0.44 0.51 0.45 0.15 0.36 -0.07 0.26 -0.03DSI 0.64 0.78 0.66 0.37 0.56 0.19 0.35 0.09Thargomindah All -0.18 0.02 0.19 -0.19 0.19 0.25 -0.02 -0.15NoHz -0.25 0.06 0.26 -0.07 0.26 0.29 0.03 -0.11NoHzWr -0.31 0.03 0.26 -0.10 0.26 0.28 0.00 -0.15DSI -0.25 0.52 0.71 0.54 0.76 0.79 -0.03 -0.09Urandangie All 0.93 0.92 0.92 0.90 0.92 0.86 0.87 0.73NoHz 0.92 0.92 0.92 0.89 0.91 0.85 0.86 0.72NoHzWr 0.80 0.84 0.79 0.80 0.81 0.79 0.77 0.68DSI 0.85 0.86 0.85 0.86 0.87 0.86 0.79 0.63Windorah All 0.82 0.84 0.81 0.85 0.85 0.77 0.83 0.72NoHz 0.84 0.87 0.84 0.88 0.88 0.76 0.86 0.71NoHzWr 0.87 0.89 0.84 0.89 0.88 0.73 0.84 0.71DSI 0.91 0.94 0.93 0.92 0.88 0.61 0.87 0.64Longreach All -0.35 -0.39 -0.34 -0.42 -0.35 -0.38 -0.34 -0.26NoHz -0.35 -0.33 -0.33 -0.33 -0.32 -0.15 -0.23 0.11NoHzWr -0.17 -0.10 -0.16 -0.09 -0.14 -0.05 -0.13 -0.01DSI 0.32 0.33 0.32 0.31 0.30 0.29 0.35 0.31Quilpie All 0.24 0.30 0.18 0.19 0.18 0.29 0.17 0.21NoHz 0.41 0.44 0.32 0.37 0.34 0.48 0.26 0.26NoHzWr 0.08 0.11 0.03 0.03 0.04 0.07 0.02 -0.02DSI 0.10 0.04 0.05 0.00 0.00 -0.08 0.05 0.01149
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Modelling Land Susceptibility toWin
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AUSLEM was developed as a Geographi
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who joined me on many trips, shared
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Conference Presentations by the Aut
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2.2.5 Soil Moisture Effects........
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Chapter 6: Assessing Land Susceptib
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List of FiguresChapter 1: Introduct
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Figure 2.11 Conceptual model of lan
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hand column) presents trajectories
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List of TablesChapter 1: Introducti
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Chapter 1 - Introduction• The abi
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Chapter 1 - Introductionchapter the
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Chapter 1 - Introductionevents yr -
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Chapter 1 - IntroductionFigure 1.2
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Chapter 1 - Introductionsusceptibil
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Chapter 1 - Introductiontemporal pa
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Chapter 1 - Introduction1.5 Researc
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Chapter 1 - IntroductionFigure 1.3
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Chapter 1 - IntroductionDowns. Wind
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Beadle, N.C.W., 1945. Dust storms.
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Bryan, R.B., Govers, G., Poesen, J.
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Chepil, W.S., 1965. Transport of so
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Fryrear, D.W., Sutherland, P.L., Da
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Gregory, J.M., 1984. Prediction of
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Hugenholtz, C.H., Wolfe, S.A., 2005
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Littleboy, M., McKeon, G.M., 1997.
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Marshall, J.K., 1973. Drought, land
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Assessment Report of the Intergover
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Penner, J.E., et al. , 2001. Climat
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Rickert, K.G., McKeon, G.M., 1982.
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Wind Erosion in Western Queensland Australia

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