TY  - JOUR
A1  - Siegmund, Nicole
A1  - Funk, Roger
A1  - Sommer, Michael
A1  - Avecilla, Fernando
A1  - Esteban Panebianco, Juan
A1  - Iturri, Laura Antonela
A1  - Buschiazzo, Daniel
T1  - Horizontal and vertical fluxes of particulate matter during wind erosion on arable land in the province La Pampa, Argentina
JF  - International journal of sediment research
N2  - A detailed analysis of horizontal and vertical particulate matter (PM) fluxes during wind erosion has been done, based on measurements of PM smaller than 10, 2.5, and 1.0 mu mm, at windward and leeward positions on a measuring field. The three fractions of PM measurement are differently influenced by the increasing wind and shear velocities of the wind. The measured concentrations of the coarser fractions of the fine dust, PM10, and PM2.5, increase with wind and shear velocity, whereas the PM1.0 concentrations show no clear correlation to the shear velocity. The share of PM2.5 on PM10 depends on the measurement height and wind speed and varies between 4 and 12 m/s at the 1 m height ranging from 25% to 7% (average 10%), and at the 4 m height from 39% to 23% (average 30%). Although general relationships between wind speed, PM concentration, and horizontal and vertical fluxes could be found, the contribution of the measuring field was very low, as balances of incoming and outgoing fluxes show. Consequently, the measured PM concentrations are determined from a variety of sources, such as traffic on unpaved roads, cattle drives, tillage operations, and wind erosion, and thus, represent all components of land use and landscape structure in the near and far surroundings of the measuring field. The current results may reflect factors from the landscape scale rather than the influence of field-related variables. The measuring devices used to monitor PM concentrations showed differences of up to 20%, which led to considerable deviations when determining total balances. Differences up to 67% between the calculated fluxes prove the necessity of a previous calibration of the devices used. (c) 2022 International Research and Training Centre on Erosion and Sedimentation/the World Association for Sedimentation and Erosion Research.
KW  - PM10, PM2.5 and PM1.0 concentrations
KW  - Field measurements
KW  - Horizontal
KW  - flux
KW  - Vertical flux
KW  - PM balances
Y1  - 2022
U6  - https://doi.org/10.1016/j.ijsrc.2022.01.004
SN  - 1001-6279
SN  - 2589-7284
VL  - 37
IS  - 5
SP  - 539
EP  - 552
PB  - IRTCES
CY  - Beijing
ER  -