DBPapers
DOI: 10.5593/sgem2011/s09.116

USING A GIS BASED GEOSTATISTICAL APPROACH FOR MAPPING ATMOSPHERIC SO2 CONCENTRATIONS IN BALIKESIR CITY, TURKEY

AUTHOR/S: L. H. TECER, S. TAGIL
Monday 1 August 2011 by Libadmin2011

11th International Multidisciplinary Scientific GeoConference SGEM2011, www.sgem.org, SGEM2011 Conference Proceedings/ ISSN 1314-2704, June 20-25, 2011, Vol. 2, 469-475 pp

ABSTRACT

Some compounds especially sulphur dioxide (SO2) is considered as typical indicators of the urban air quality. To inform decisions regarding, for instance, the protection of public health from elevated SO2 levels in Balikesir, high-resolution maps are necessary.
Therefore, the main objectives of this paper were to: (1) analyze the spatial distribution of SO2 levels using geostatistical techniques; (2) incorporate this information in a GIS to produce accurate SO2. Geostatistics provides useful technique to get estimates of
values of the studied variable at un-sampled locations, considering the spatial distribution pattern and integrating information from sample points and observed trends. In the study, the data were compiled from 20 monitoring stations, using passive sampling, geographically distributed throughout the study area, which provide
information about the SO2, spatial coordinates, and collection time. The period of temporal data collection was from March 10 to March 17, 2010. From a modeling point of view, Geographical Information System (GIS) was used mainly for the preprocessing
and postprocessing of data to be displayed in digital map layers. Firstly, statistical analysis of samples, such as normal QQ Plot distribution, histograms, trend analysis and
a half variation/covariance analysis were used to check the normality to find the appropriate statistical analysis model. Spatial correlation was quantified with semivariograms. And also, estimated SO2 levels at unsampled locations were carried out with the ordinary kriging method, integrating the spatial correlation structures described
with the variograms. The results of the passive sampling study show that the winter and summer average concentrations are 30,97 μg/m3 for SO2. It is expected that where
industrial activity is not excessively important, traffic and domestic heating system are the main source of SO2 precursors. Results were shown on the maps. It was demonstrated that geostatiscal tools are quite appropriate techniques for air quality management in small city area like Balikesir.

Keywords: Air pollution, Balikesir, Geographical information science (GIS), Geostatistics, Ordinary Kriging, Spatial analysis, Sulfur dioxide.

PAPER 2011/s09.116: USING A GIS BASED GEOSTATISTICAL APPROACH FOR MAPPING ATMOSPHERIC SO2 CONCENTRATIONS IN BALIKESIR CITY, TURKEY

30 EURO ADD TO CART


Your cart ( items)

Subtotal:
Tax cost ():
Shipping cost:
Total:
Checkout Empty


Home | Contact | Site Map | Site statistics | Visitors : 302 / 353063

Follow site activity en  Follow site activity CARTOGRAPHY AND GIS  Follow site activity Papers SGEM2011   ?

CrossRef Member    Indexed in ISI Web Of Knowledge   Indexed in ISI Web Of Knowledge
   

© Copyright 2001 International Multidisciplinary Scientific GeoConference & EXPO SGEM. All Rights Reserved.

Creative Commons License