Can a dam type of an alpine lake be derived from lake geometry? A negative result

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F21%3A00542595" target="_blank" >RIV/86652079:_____/21:00542595 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41330/21:87011

Result on the web

<a href="https://link.springer.com/content/pdf/10.1007/s11629-020-6003-9.pdf" target="_blank" >https://link.springer.com/content/pdf/10.1007/s11629-020-6003-9.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11629-020-6003-9" target="_blank" >10.1007/s11629-020-6003-9</a>

Result language

angličtina

Original language name

Can a dam type of an alpine lake be derived from lake geometry? A negative result

Original language description

Glacial lake outburst floods (GLOFs) represent one of the most serious hazard and risk in deglaciating high mountain regions worldwide and the need for GLOF hazard and risk assessment is apparent. As a consequence, numerous region- and nation-wide GLOF assessment studies have been published recently. These studies cover large areas and consider hundreds to thousands of lakes, prioritizing the hazard posed by them. Clearly, certain simplification is required for executing such studies, often resulting in neglecting qualitative characteristics which would need manual assignment. Different lake dam types (e.g., bedrock-dammed, moraine-dammed) are often not distinguished, despite they control GLOF mechanism (dam overtopping/dam breach) and thus GLOF magnitude. In this study, we explore the potential of easily measurable quantitative characteristics and four ratios to approximate the lake dam type. Our dataset of 851 lakes of the Cordillera Blanca suggests that while variances and means of these characteristics of individual lake types differ significantly (F-test, t-test), value distribution of different geometrical properties can't be used for the originally proposed purpose along the spectra. The only promising results are obtained for extreme values (selected bins) of the ratios. For instance, the low width to length ratio indicates likely moraine-dammed lake while the high value of ratio indicating round-shape of the lake indicates increased likelihood of bedrock-dammed lake. Overall, we report a negative result of our experiment since there are negligible differences of relative frequencies in most of the bins along the spectra.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/LO1415" target="_blank" >LO1415: CzechGlobe 2020 – Development of the Centre of Global Climate Change Impacts Studies</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

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

Name of the periodical

Journal of Mountain Science

ISSN

1672-6316

e-ISSN

1993-0321

Volume of the periodical

18

Issue of the periodical within the volume

3

Country of publishing house

CN - CHINA

Number of pages

8

Pages from-to

614-621

UT code for WoS article

000627411100004

EID of the result in the Scopus database

2-s2.0-85102372596