Research Article
Frequency of Mine Dust Episodes and the Influence of Meteorological Parameters on the Witwatersrand Area, South Africa
Table 3
Determination of dust fall levels by meteorological parameters.
| Site code | Regression equation | | value | | (%) | Critical level |
| 34NENT | | Model 1 | 150.0 | 0.41 | 17 | >4 m/s (ws) | 40HOSTEL | | Model 2 | 235.7 | 0.58 | 34 | >4 m/s (ws) | 50MOLLO | | Model 3 | 217.8 | 0.52 | 25 | >4 m/s (ws) | 53-1121 | | Model 4 | −6.35 | 0.33 | 11 | <60% (rh) | 57JCELC | | Model 5 | 158.1 | 0.39 | 15 | >4 m/s (ws) | 70CTC | | Model 6 | −4.41 | 0.35 | 17 | <50% (rh) | 21HR | | Model 7 | 314.9 | 0.47 | 22 | >4 m/s (ws) | 23IMP | | Model 8 | 401.2 | 0.47 | 22 | >4 m/s (ws) | 27PP | | Model 9 | −7.22 | 0.34 | 11 | <60% (rh) | 32KLL | | Model 10 | −9.13 | 0.52 | 15 | >4 m/s (ws) | 65KG MIN | | Model 11 | 406.7 | 0.40 | 16 | >4 m/s (ws) |
|
|
Models are significant at . df: dustfall; ws: mean wind speed. rh: mean relative humidity.
|