Szczegóły publikacji
Opis bibliograficzny
Human-induced sedimentation patterns of a channelized lowland river / Dariusz CISZEWSKI, Agnieszka Czajka // Earth Surface Processes and Landforms ; ISSN 0197-9337. — 2015 — vol. 40 iss. 6, s. 783-795. — Bibliogr. s. 794–795, Abstr. — Publikacja dostępna online od: 2014-12-28
Autorzy (2)
- AGHCiszewski Dariusz
- Czajka Agnieszka
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 94316 |
|---|---|
| Data dodania do BaDAP | 2015-12-04 |
| Tekst źródłowy | URL |
| DOI | 10.1002/esp.3686 |
| Rok publikacji | 2015 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Earth Surface Processes and Landforms |
Abstract
Channelization of the severely polluted Odra and Vistula Rivers in Poland induced intensive accumulation of fine-grained deposits rich in organic matter and heavy metals. These sediments have been identified in vertical profiles in a narrow zone along river banks both in groyne-created basins and on the floodplain. Grain size, organic matter, zinc (Zn), lead (Pb), copper (Cu) content and cesium-137 (Cs-137) was used for sediment dating and, stratigraphy and chemistry have been diagnostic features for these deposits, named industrial alluvium. In the most polluted river reaches stabilized by bank reinforcements and groynes, 2-m-thick slack water groyne deposits are composed of uniform strata of polluted silts with organic matter content over 10%, Zn content over 1000mg/kg and average Cu and Pb over 100mg/kg. The average rate of sediment accretion in groynes is higher than on the floodplain and reaches 5cm/yr. Stratification which appears at higher levels in the groyne fields and on the levees reflects a change from in-channel to overbank deposition and is typified by dark layers separated by bright, sandy, and less polluted strata. Stratified, 4-m-thick, sediment sequences have been found in groyne fields of incised river reaches. The average rate of sediment accretion in these reaches is of the order of 5cm/yr. In stable and relatively less polluted river reaches, vertical-accretion organic deposits are finely laminated and the average rate of deposition amounts to a few millimeters per year. Investigations indicate that groyne construction favors conditions for long-term storage of sediments at channel banks. For this reason, groynes should be considered as structures that efficiently limit sudden release of sediment-associated heavy metals stored in channels and in floodplains of the historically polluted rivers.
