Detailed Information on Publication Record
2011
Depositional rates and dating techniques of modern deposits in the Brno reservoir (Czech Republic) during the last 70 years
NEHYBA, Slavomír, Daniel NÝVLT, Uwe SCHKADE, Gerald KIRCHNER, Eva FRANCŮ et. al.Basic information
Original name
Depositional rates and dating techniques of modern deposits in the Brno reservoir (Czech Republic) during the last 70 years
Name in Czech
Depoziční rychlost a metody datování moderních sedimentů (stáří 70 let) v rámci Brněnské přehrady (Česká republika)
Authors
NEHYBA, Slavomír (203 Czech Republic, guarantor, belonging to the institution), Daniel NÝVLT (203 Czech Republic, belonging to the institution), Uwe SCHKADE (276 Germany), Gerald KIRCHNER (276 Germany) and Eva FRANCŮ (203 Czech Republic, belonging to the institution)
Edition
Journal of Paleolimnology, Springer Verlag, 2011, 0921-2728
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10500 1.5. Earth and related environmental sciences
Country of publisher
Czech Republic
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 1.898
RIV identification code
RIV/00216224:14310/11:00051896
Organization unit
Faculty of Science
UT WoS
000285931000004
Keywords in English
reservoir deposits-radiometric dating-depositional rate-hydrological changes-human impact
Tags
International impact, Reviewed
Změněno: 5/5/2014 09:32, doc. Mgr. Eva Geršlová, Ph.D.
V originále
Facies analysis, magnetic susceptibility, and analysis of grain size, TOC content and isotopes (137Cs, 210Pb, 226Ra, 228Ra, and 238U concentrations) were used to determine the history of the modern deposits of the Brno reservoir. The sedimentary succession can be subdivided into two main units. The lower unit is interpreted as a fluvial succession deposited before the Svratka River was dammed. The upper unit is interpreted as a product of the reservoir deposition. The concentrations of 238U reflect the history of uranium mining in the upper part of the Svratka River catchment. As a consequence, 210Pb radionuclide concentrations cannot be used for establishing a sediment chronology. Concentrations of 137Cs show two marked peaks, the upper of which is attributed to the Chernobyl reactor accident in 1986, and the lower one is attributed to the maximum rate of atomic weapons testing in 1963. From these peaks, mean depositional rates of 3.2 cm y-1 for the time period of 1986 to 2007 and of 3.4 cm y-1 between 1963 and 1986 are calculated. Based on the known age of the reservoir, which was constructed in 1939, we can also calculate mean depositional rate for the time period of 1939 to 1963, which is 3.1 cm y-1.
In Czech
Faciální analýza, magnetická susceptibilita, zrnitost a obsahu TOC i isotopů (137Cs, 210Pb, 226Ra, 228Ra, and 238U koncentrace) byly použity pro určení historie moderních sedimentů brněnské přehrady.
Links
| MSM0021622412, plan (intention) |
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