Effects of rainy season on mobilization of contaminants from tsunami deposits left in a coastal zone of Thailand by the 26 December 2004 tsunami |
| |
| Authors: | Witold Szczuciński Przemys?aw Niedzielski Lidia Kozak Marcin Frankowski Anetta Zio?a Stanis?aw Lorenc |
| |
| Institution: | (1) Institute of Geology, Adam Mickiewicz University in Poznań, Maków Polnych 16, 61-686 Poznań, Poland;(2) Department of Water and Soil Analysis, Adam Mickiewicz University in Poznań, Drzymały 24, 60-613 Poznań, Poland |
| |
| Abstract: | Study on contamination of tsunami sediments deposited on 26 December 2004 conducted shortly after the tsunami in coastal zone
of Thailand revealed elevated contents of salts in water-soluble and some heavy metals and arsenic in bioavailable fractions
(Szczuciński et al. in Env Geol 49:321–331, 2005). Few months later rainy season started and effected in total rainfall of over 3,300 mm. This paper presents results of survey
repeated 1 year after the tsunami. To assess the effects of rainy season on mobilization of previously determined potential
contaminants, the same locations were sampled again and analysed with the same methods. The tsunami deposit layer was well
preserved but in many locations the sediments were coarser than just after tsunami due to washing out of finer fractions.
The water-soluble salts contents were strongly reduced after the rainy season. However, the concentrations of acid leachable
heavy metals and metalloids were still elevated in comparison to reference sample from an area not impacted by tsunami. It
is possible that the metals and metalloids are successively moved to more bioavailable fraction from forms which were more
resistant to mobilization. |
| |
| Keywords: | Tsunami deposits Contamination Bioavailable fraction Coastal hazard Thailand |
| 本文献已被 SpringerLink 等数据库收录！ |
|
