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| Titel |
Regional-scale analysis of lake outburst hazards in the southwestern Pamir, Tajikistan, based on remote sensing and GIS |
| VerfasserIn |
M. Mergili, J. F. Schneider |
| 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 ; 11, no. 5 ; Nr. 11, no. 5 (2011-05-18), S.1447-1462 |
| Datensatznummer |
250009424
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| Publikation (Nr.) |
 copernicus.org/nhess-11-1447-2011.pdf |
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| Zusammenfassung |
| This paper presents an analysis of the hazards emanating from the sudden
drainage of alpine lakes in South-Western Tajik Pamir. In the last 40 yr, several new lakes have formed in the front of retreating glacier
tongues, and existing lakes have grown. Other lakes are dammed by landslide
deposits or older moraines. In 2002, sudden drainage of a glacial lake in
the area triggered a catastrophic debris flow. Building on existing
approaches, a rating scheme was devised allowing quick, regional-scale
identification of potentially hazardous lakes and possible impact areas.
This approach relies on GIS, remote sensing and empirical modelling, largely
based on medium-resolution international datasets. Out of the 428 lakes
mapped in the area, 6 were rated very hazardous and 34 hazardous. This
classification was used for the selection of lakes requiring in-depth
investigation. Selected cases are presented and discussed in order to
understand the potentials and limitations of the approach used. Such an
understanding is essential for the appropriate application of the methodology
for risk mitigation purposes. |
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