Are the historically known landslide events really the biggest? An insight using dendrogeomorphology

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F25%3AA26039JB" target="_blank" >RIV/61988987:17310/25:A26039JB - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/10.1007/s10346-024-02354-1" target="_blank" >https://link.springer.com/10.1007/s10346-024-02354-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10346-024-02354-1" target="_blank" >10.1007/s10346-024-02354-1</a>

Result language

angličtina

Original language name

Are the historically known landslide events really the biggest? An insight using dendrogeomorphology

Original language description

The construction of the magnitude-frequency relationship is one of the key bases for the estimation of landslide hazard. However, data on past landslide occurrence are mostly from archival sources, and it is assumed that only the largest events are recorded. This situation may result in a critical underestimation or overestimation of the resulting landslide hazard. Therefore, in this study, chronological and spatial parameters were verified using dendrogeomorphic methods for six selected landslides for which at least one reactivation was historically known. The selected tree-ring-based parameters were thus compared between historically known events and other events that were identified using dendrogeomorphic reconstruction. In total, disturbed trees were analyzed, and growth disturbances were identified from their tree-ring series, from which landslide reactivations (including historically known ones) were reconstructed. The results suggest that for half of the landslides studied, the historically known event can indeed be assumed to have been the largest in area over the time period covered by the tree-ring data. However, for some of these landslides, the results suggest that the magnitude of movement (the rate of rotation of the landslide blocks) was significantly smaller than historically known. Conversely, for landslides whose reactivated area was smaller than that of historically known landslides for all unknown events, the results suggest that the magnitude of movement was significantly larger. In the case of only one landslide, the results suggest that the historically known event was one of the smallest, and most of the previously unknown reactivations (revealed by dendrogeomorphic analysis) were larger in area with greater rates of movement. The results thus provide new and original insight into the issue of the size of historically known landslide reactivations.

Czech name

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Czech description

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Type

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

CEP classification

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OECD FORD branch

10508 - Physical geography

Project

<a href="/en/project/GA22-12522S" target="_blank" >GA22-12522S: Tree-ring microscopic anatomy as a chronological data source for optimization of landslide hazard assessment</a><br>

Continuities

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

Publication year

2025

Confidentiality

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

Name of the periodical

Landslides

ISSN

1612-510X

e-ISSN

1612-5118

Volume of the periodical

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Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

11

Pages from-to

45-55

UT code for WoS article

001298767400002

EID of the result in the Scopus database

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