Possibilities and limits of dendrogeomorphic data as a basis for defining thresholds for landslide triggering

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44994575%3A_____%2F23%3A10001550" target="_blank" >RIV/44994575:_____/23:10001550 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61988987:17310/23:A2402KKH

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1125786523000516?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1125786523000516?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.dendro.2023.126101" target="_blank" >10.1016/j.dendro.2023.126101</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Possibilities and limits of dendrogeomorphic data as a basis for defining thresholds for landslide triggering

Popis výsledku v původním jazyce

Dendrogeomorphic (tree-ring based) methods are an effective tool for determining the spatial and temporal activity of landslide movements. Moreover, the obtained chronological data can be used for the analysis of their potential triggers. However, the use of tree-ring based chronologies for defining trigger thresholds is very rare and has not yet been critically evaluated. Given the well-known limitations of dendrogeomorphic methods, this study aims to define the limitations and advantages of this approach for trigger threshold analysis. Thus, tree-ring based data on the activity of 26 landslides, originating from 2644 tree-ring series of disturbed trees (and 180 treering series of reference trees), were used in this study. Total Water Content (TWC) as a combination of precipitation sum (PS) and snow water equivalent (SWE) was analyzed as landslide trigger. The obtained values of the range of trigger thresholds were relatively high. The considerable heterogeneity of the results seems to be largely influenced by the character of the data obtained by dendrogeomorphic methods. In the discussion section, all potential influences of the tree-ring based approach on the obtained results and the possibilities of their elimination are discussed. Among the most important ones can be considered the inertia of tree response to landslide movements, the ability of trees in general to capture landslide movements, as well as the use of the approach to define a landslide event. However, in addition to dendrogeomorphic influences, the heterogeneity of the landslides studied and their geological structure themselves must be taken into account.

Název v anglickém jazyce

Possibilities and limits of dendrogeomorphic data as a basis for defining thresholds for landslide triggering

Popis výsledku anglicky

Dendrogeomorphic (tree-ring based) methods are an effective tool for determining the spatial and temporal activity of landslide movements. Moreover, the obtained chronological data can be used for the analysis of their potential triggers. However, the use of tree-ring based chronologies for defining trigger thresholds is very rare and has not yet been critically evaluated. Given the well-known limitations of dendrogeomorphic methods, this study aims to define the limitations and advantages of this approach for trigger threshold analysis. Thus, tree-ring based data on the activity of 26 landslides, originating from 2644 tree-ring series of disturbed trees (and 180 treering series of reference trees), were used in this study. Total Water Content (TWC) as a combination of precipitation sum (PS) and snow water equivalent (SWE) was analyzed as landslide trigger. The obtained values of the range of trigger thresholds were relatively high. The considerable heterogeneity of the results seems to be largely influenced by the character of the data obtained by dendrogeomorphic methods. In the discussion section, all potential influences of the tree-ring based approach on the obtained results and the possibilities of their elimination are discussed. Among the most important ones can be considered the inertia of tree response to landslide movements, the ability of trees in general to capture landslide movements, as well as the use of the approach to define a landslide event. However, in addition to dendrogeomorphic influences, the heterogeneity of the landslides studied and their geological structure themselves must be taken into account.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Dendrochronologia

ISSN

1125-7865

e-ISSN

1612-0051

Svazek periodika

80

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

001049032100001

EID výsledku v databázi Scopus

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