Title: A New Spatiotemporal Risk Index for Heavy Metals: Application in Cyprus
Authors: KARYDAS Christos G.TZORAKI OuraniaPANAGOS Panagiotis
Citation: WATER vol. 7 no. 8 p. 4323-4342
Publisher: MDPI AG
Publication Year: 2015
JRC N°: JRC96282
ISSN: 2073-4441
URI: http://www.mdpi.com/2073-4441/7/8/4323
DOI: 10.3390/w7084323
Type: Articles in periodicals and books
Abstract: The main aim of this research was to improve risk mapping of heavy metals by accounting for erosion effects. A new spatiotemporal index, namely G2met, is introduced, incorporating the Hakanson index, the G2 model and the Gavrilovic model. The G2met index is expressed in terms of monthly time series of risk maps for each heavy metal and totally. The rich in heavy metals and vulnerable to erosion, island of Cyprus, was selected as a study area, which though was limited to the southern part of the island, where all required data were available. Concentration of major heavy metals was extracted by sampling soil from a grid of 5350 sites. Rainfall, vegetation, soil, land use, topographic, and hydrologic data were collected or calculated from existing European or global databases (WorldClim, BioBar, ESDAC, CORINE, ASTER GDEM, and USGS). A large number of regional-scale risk maps were produced (500-m ell size), i.e. one for each heavy metal and totally per month and annually. Also, choropleth maps per heavy metal are potentially available, in terms of statistics per river basin. The G2met maps provide different patterns in comparison to those depicted by the Hakanson index alone.
JRC Directorate:Sustainable Resources

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