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Contaminated area instability along Ångerman Älven River, northern Sweden
Stockholm University, Faculty of Science, Department of Physical Geography.
Stockholm University, Faculty of Science, Department of Physical Geography. (Geomorphology and glaciology)ORCID iD: 0000-0002-1030-5268
Stockholm University, Faculty of Science, Department of Physical Geography. (Hydrology, Water Resources and Permafrost)
(Hydrology, Water Resources and Permafrost)
2017 (English)In: Environmental Monitoring & Assessment, ISSN 0167-6369, E-ISSN 1573-2959, Vol. 189, no 118Article in journal (Refereed) Published
Abstract [en]

Industrially utilized river basins are frequently exposed to contaminants originating from polluting activities. However, the physical instability and probability of mass movement mobilization of contaminated soil into rivers have only received little attention. In this study, we present a GIS-based method to produce a regional overview of where and how contaminated areas are potentially exposed to slope instability. A landslide susceptibility-index was used to study the degree and distribution of overlap between contaminated sites and unstable ground. A contaminated area instability hazard classification was produced integrating slope instability and contamination risk classification. Our results indicate that mass movement can be tied mainly to a slope gradient ≥16°, a proximity to the river that is <500 m, a distance of <500 m from roads, concave surface curvature, and sand- and silt soils. Forty-six (22%) of all considered contaminated sites are located within areas with a non-negligible slope instability, of which a majority, 30 sites (14%) are situated on ground with a low or moderate instability. Three sites with a class 2 contamination risk (the 2nd highest class) are located on ground with a very high slope instability.

Place, publisher, year, edition, pages
2017. Vol. 189, no 118
National Category
Other Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-140638DOI: 10.1007/s10661-017-5839-0OAI: oai:DiVA.org:su-140638DiVA: diva2:1081139
Available from: 2017-03-13 Created: 2017-03-13 Last updated: 2017-03-13

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Ebert, KarinJarsjö, JerkerFrampton, Andrew
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