Threat of pollution hotspots reworking in river systems: Example of the Ploučnice River (Czech Republic)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F18%3A43894152" target="_blank" >RIV/44555601:13520/18:43894152 - isvavai.cz</a>

Result on the web

<a href="http://gisak.vsb.cz/GIS_Ostrava/GIS_Ova_2018/proceedings/proceedings.pdf" target="_blank" >http://gisak.vsb.cz/GIS_Ostrava/GIS_Ova_2018/proceedings/proceedings.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Threat of pollution hotspots reworking in river systems: Example of the Ploučnice River (Czech Republic)

Original language description

Mapping and evaluation of historically polluted fluvial sediments is an urgent topic as they may endanger quality of water and solids transported by rivers and thus impact biota including humans. The polluted sediment reworking may be triggered by floods and sometimes also by river engineering or revitalisation. A combination of diverse methods including geoinformatics allows pollution hotspots identification in floodplains and evaluation of their potential for their future reworking. The Ploučnice River and its floodplain were polluted by local uranium mining (U-mining) in 1971-1989. This river has been studied since 2013 in aim to identify the relationship between the floodplain geomorphology and the spatial distribution of pollutants. Archive information on pollution history and past floods, old maps and aerial photographs, and older low-resolution gamma activity aerial survey were collected to understand the floodplain development and pollution heterogeneity. Afterwards, digital terrain model based on publically available LiDAR data (airborne laser scanning) was used to identify the sites of river channel shifts with GIS analysis. Finally a non-invasive geochemical mapping started, using portable X-ray fluorescence (XRF) and gamma spectrometers. The resulting datasets were processed by spatial statistical methods. One of the main outputs of our study was the detailed analysis of pollution distribution in the floodplain. The results showed a relationship between deposition of polluted sediments and the past channel shifts. We found that an increased concentration of pollution occurred mainly in the cut-off meanders and lateral channel deposits from the period of mining, the latter being endangered by reworking (turning back to the river) in next decades.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/GA15-00340S" target="_blank" >GA15-00340S: Anthropogenic Pollution and Fluvial Architecture: Two Phenomena and a Single Story</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

GIS Ostrava 2018 - GIS for Safety &amp; Security Management

ISBN

978-80-248-4235-6

ISSN

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e-ISSN

neuvedeno

Number of pages

18

Pages from-to

159-176

Publisher name

Department of Geoinformatics, VŠB - Technical University of Ostrava

Place of publication

Ostrava - Poruba

Event location

Ostrava

Event date

Mar 21, 2019

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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