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| Titel |
Regional-scale analysis of high-mountain multi-hazard and risk indicators in the Pamir (Tajikistan) with GRASS GIS |
| VerfasserIn |
F. E. Gruber, M. Mergili |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 13, no. 11 ; Nr. 13, no. 11 (2013-11-07), S.2779-2796 |
| Datensatznummer |
250085550
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| Publikation (Nr.) |
 copernicus.org/nhess-13-2779-2013.pdf |
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| Zusammenfassung |
| We present a model framework for the regional-scale analysis of high-mountain
multi-hazard and -risk indicators, implemented with the open-source software
package GRASS GIS. This framework is applied to a 98 300 km2 study
area centred in the Pamir (Tajikistan). It includes (i) rock slides, (ii) ice
avalanches, (iii) periglacial debris flows and (iv) lake outburst floods.
First, a hazard indicator is assigned to each relevant object (steep rock
face, glacier or periglacial slope, lake). This indicator depends on the
susceptibility and on the possible event magnitude. Second, the possible
travel distances, impact areas and, consequently, impact hazard indicators
for all types of processes are computed using empirical relationships. The
impact hazard indicators are finally superimposed with an exposure indicator
derived from the type of land use, resulting in a raster map of risk
indicators finally discretized at the community level. The analysis results
are presented and discussed at different spatial scales. The major outcome of
the study, a set of comprehensive regional-scale hazard and risk indication
maps, shall represent an objective basis for the prioritization of target
communities for further research and risk mitigation measures. |
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