Spatiotemporal patterns of high-mountain lakes and related hazards in western Austria

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67179843%3A_____%2F15%3A00453799" target="_blank" >RIV/67179843:_____/15:00453799 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/15:10314441

Result on the web

<a href="http://dx.doi.org/10.1016/j.geomorph.2015.06.032" target="_blank" >http://dx.doi.org/10.1016/j.geomorph.2015.06.032</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.geomorph.2015.06.032" target="_blank" >10.1016/j.geomorph.2015.06.032</a>

Result language

angličtina

Original language name

Spatiotemporal patterns of high-mountain lakes and related hazards in western Austria

Original language description

Climate-induced environmental changes are triggering the dynamic evolution of high-mountain lakes worldwide, a phenomenon that has to be monitored in terms of lake outburst hazards.We analyzed the spatial distribution and recent temporal development of high-mountain lakes in a study area of 6139 km2, covering the central European Alps (Tyrol). We identified 1024 lakes. While eight lakes are ice-dammed, one-third of all lakes are located in the immediate vicinity of recent glacier tongues, half of them impounded by moraines, half by bedrock. Two-thirds of all lakes are apparently related to LIA or earlier glaciations. One landslide-dammed lake was identified in the study area. The evolution of nine selected (pro)glacial lakeswas analyzed in detail, usingmultitemporal remotely sensed images and field reconnaissance. Considerable glacier retreat led to significant lake growth at four localities, two lakes experienced stagnant or slightly negative areal trends, one lake experienced a more significant negative areal trend, and two lakes drained completely during the investigation period. We further (i) analyzed the susceptibility of selected lakes to glacial lake outburst floods (GLOFs), using two different methods; (ii) identified potential triggers and mechanisms of GLOFs; (iii) calculated possible flood magnitudes for predefined flood scenarios for a subset of the lakes; and (iv) delineated potentially impacted areas. We distinguished three phases of development of bedrock-dammed lakes: (a) a proglacial, (b) a glacierdetached, and (c) a nonglacial phase. The dynamics — and also the susceptibility of a lake to GLOFs — decrease substantially from (a) to (c). Lakes in the stages (a) and (b) are less prominent in our study area, compared to other glacierized high-mountain regions, leading us to the conclusion that (i) the current threat to the population by GLOFs is lower but (ii) the future development of emerging lakes has to be monitored carefully.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DE - Earth magnetism, geodesy, geography

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

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

Name of the periodical

Geomorphology

ISSN

0169-555X

e-ISSN

—

Volume of the periodical

246

Issue of the periodical within the volume

oct

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

15

Pages from-to

602-616

UT code for WoS article

000360869400048

EID of the result in the Scopus database

2-s2.0-84937788104