TITLE:
Development of methodology for quantitative landslide risk assessment—Example Göta river valley
AUTHORS:
Yvonne Andersson-Sköld, Stefan Falemo, Marius Tremblay
KEYWORDS:
Landslide; Risk Assessment; Methodology; Climate Change
JOURNAL NAME:
Natural Science,
Vol.6 No.3,
February
26,
2014
ABSTRACT:
Effective landslide risk management requires knowledge of
the landslide risks. This paper presents a risk assessment methodology for semiregional scale. The landslide probability is assessed taking into account
expected climatechange in the case study area (the G?ta river valley). Climate
change is expected to result in increased erosion and water fluctuations. There
are large areas with marine clays, often quick clay, in the area and the
landslide process can be rapid with extensive damages and casualties. The
consequence methodology includes a wide range of consequences assessed by
monetary valuation. The consequences and the landslide probability are combined
as pairs of values in a risk matrix and the risk is also presented on a map.
The map has been used as discussion and decision bases in the municipalities in
the G?ta river valley, in the county administration and on governmental level
to estimate the needs of risk mitigation and to make priorities.