Geochemical traces of flood layers in the fluvial sedimentary archive; implications for contamination history analyses

BÁBEK, Ondřej, Martin FAMĚRA, Klára HILSCHEROVÁ, Jiří KALVODA, Petr DOBROVOLNÝ, Jan SEDLÁČEK, Jiří MACHÁT and Ivan HOLOUBEK. Geochemical traces of flood layers in the fluvial sedimentary archive; implications for contamination history analyses. Catena. AMSTERDAM, NETHERLANDS: Elsevier, 2011, vol. 87, No 2, p. 281-290. ISSN 0341-8162. Available from: https://dx.doi.org/10.1016/j.catena.2011.06.014.

Basic information

• Original name: Geochemical traces of flood layers in the fluvial sedimentary archive; implications for contamination history analyses
• Authors: BÁBEK, Ondřej (203 Czech Republic, guarantor, belonging to the institution), Martin FAMĚRA (203 Czech Republic, belonging to the institution), Klára HILSCHEROVÁ (203 Czech Republic, belonging to the institution), Jiří KALVODA (203 Czech Republic, belonging to the institution), Petr DOBROVOLNÝ (203 Czech Republic, belonging to the institution), Jan SEDLÁČEK (203 Czech Republic, belonging to the institution), Jiří MACHÁT (203 Czech Republic, belonging to the institution) and Ivan HOLOUBEK (203 Czech Republic, belonging to the institution).
• Edition: Catena, AMSTERDAM, NETHERLANDS, Elsevier, 2011, 0341-8162.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10511 Environmental sciences
• Country of publisher: Netherlands
• Confidentiality degree: is not subject to a state or trade secret
• Impact factor: Impact factor: 1.889
• RIV identification code: RIV/00216224:14310/11:00055616
• Organization unit: Faculty of Science
• Doi: http://dx.doi.org/10.1016/j.catena.2011.06.014
• UT WoS: 000294313300014
• Keywords in English: High-resolution stratigraphy; Magnetic susceptibility; Heavy metals; Flood sediments; Historical trends
• Tags: AKR, rivok, ZR

Abstract

The objective was to investigate how the vertical distribution of pollutants could be affected by episodic flood sedimentation in archives with high sedimentation rates. Concentrations of most heavy metals, normalized to lithogenic aluminium, revealed vigorous short-term variation related to floods, whose magnitude exceeds that of long-term trends. There is a substantial risk that temporal contamination trends. even if normalized to lithogenic elements, can be strongly influenced by facies, which may lead to potential misinterpretations. Element normalizing to MS, which proved to be a good proxy of grain size, provided smoother long-term trends whose interpretation was less affected by short-term variations. The long-term trends exhibit decreasing concentrations of most heavy metals for the last similar to 25 years, most notably between similar to 1987 and similar to 1992. These historical patterns correspond well to the significant improvement in environmental pollution reported elsewhere in Central Europe. In contrast, concentrations of Na have systematically increased up until the present, partly being driven by the widespread use of de-icing salt for winter road treatment.

Links

• ED0001/01/01, research and development project: Name: CETOCOEN
• MSM0021622412, plan (intention): Name: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Acronym: INCHEMBIOL)

Investor: Ministry of Education, Youth and Sports of the CR, Interactions among the chemicals, environment and biological systems and their consequences on the global, regional and local scales (INCHEMBIOL)