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Temporal and Spatial Variation of Episodic Wind Erosion in Unburned and Burned Semiarid Shrubland

^a Health Physics Measurements, Los Alamos National Laboratory, Mail Stop G761, Los Alamos, NM 87545
^b Environmental Dynamics and Spatial Analysis, Earth and Environmental Sciences Division, Los Alamos National Laboratory, Mail Stop J495, Los Alamos, NM 87545
^c Carlsbad Environmental Monitoring and Research Center, 1400 University Drive, Carlsbad, NM 88220

View larger version (18K): [in a new window]   Fig. 1. Schematics of omni-directional sampler used for total particulate aerosol measurements (a) and the passive soil collector (b).

View larger version (24K): [in a new window]   Fig. 2. Mass concentrations from the unburned site measured at 1 and 3 m as a function of average weekly velocity (a) and the peak wind velocity (b).

View larger version (31K): [in a new window]   Fig. 3. Distribution of vertical soil flux at the unburned site.

View larger version (19K): [in a new window]   Fig. 4. One-minute concentrations of 10-µm particles as a function of horizontal wind velocity. Line is hand drawn and is for illustrative purposes only.

View larger version (17K): [in a new window]   Fig. 5. Aerodynamic friction velocities measured at the burned and unburned sites as a function of the horizontal wind velocity.

View larger version (15K): [in a new window]   Fig. 6. Aerodynamic roughness length distributions measured at the burned and unburned sites.

View larger version (19K): [in a new window]   Fig. 7. Mean collection rates for different sampling heights at the burned and unburned sites with exponential fits. Error bars represent one standard deviation.

View larger version (23K): [in a new window]   Fig. 8. Changes in surface height categorized by site and intercanopy verses canopy.