L. Sahakyan, N. Maghakyan, O. Belyaeva; Proceedings of the 1st International Conference on Atmospheric Dust – Dust 2014. ProScience, 1, 2014, pp. 411-416; DOI: 10.14644/dust.2014.067
This particular research covered the territory of the second biggest city of the Republic of Armenia - Gyumri. The city lies within a seismically active zone. Strong earthquakes that occur there periodically, affect social and economic conditions and environmental status. A recent devastating one occurred in 1988 almost completely ruined the city. Present-day Gyumri has been re-built partially, nonetheless numerous dust sources and natural and anthropogenic factors are detectable there that significantly contribute to dust pollution. The research goal was implementing the first post earthquake assessment of outdoor dust pollution levels in Gyumri employing different methods. The sampling through regular grid (wholly 22 spatially coherent sampling sites) was implemented in August-September 2013 by different methods (indication environment (leaf), direct instrumental sampling (aspiration)) which allowed determining daily dust load (kg/sq.km) and dust content (mg/m3). Maps produced to reveal and collate peculiarities of spatial distribution of dust load and dust content helped contour the dustiest parts of the city. It is noteworthy that 2 peaks in dust loading were established in the west of the city, this disagreeing with those in dust contents. At the same time MAC - exceeding dust contents were detected throughout the city. It is noteworthy, too, that for the studied period dust contents in the city outskirts remained low and were not excessive against MAC. This means that dust accumulates mostly in the main residential district of the city. The assessed dust pollution levels allow concluding that dust is one of prior pollutants of atmospheric air in city of Gyumri and therefore is an environmental and health risk factor to the local population.
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