10Be dating reveals pronounced Mid-to Late Holocene activity of deep-seated landslides in the highest part of the Czech Flysch Carpathians

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F18%3AA1901V5T" target="_blank" >RIV/61988987:17310/18:A1901V5T - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.quascirev.2018.07.030" target="_blank" >http://dx.doi.org/10.1016/j.quascirev.2018.07.030</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.quascirev.2018.07.030" target="_blank" >10.1016/j.quascirev.2018.07.030</a>

Jazyk výsledku

angličtina

Název v původním jazyce

10Be dating reveals pronounced Mid-to Late Holocene activity of deep-seated landslides in the highest part of the Czech Flysch Carpathians

Popis výsledku v původním jazyce

Although the highest part of the Czech Outer Western Carpathians lacks significant recent landslide activity, the vast area (10Be dating reveals pronounced Mid-to Late Holocene activity of deep-seated landslides in the highest part of the Czech Flysch Carpathians20%) of their territory is occupied by relict deep-seated landslides and deep-seated gravitational slope deformations. Dating these deformations might help to determine degrees of present-day landslide hazard in that area. Based on the 10Be exposure dating of eight rocky scarps and walls of ridge-top trenches, we estimated the minimal ages of the deep-seated landslides (DSLs) and one deep-seated gravitational slope deformation (DSGSD) in the Satina River basin in the Moravskoslezské Beskydy Mts. The obtained ages (~9.7-2.9 ka) suggest Holocene slope instability in the area with a pronounced cluster of ages spanning from ~6.0 to 2.9 ka. Except for one DSL, the ages reveal rather episodic activity of gravitational movements. Mid-to early Late Holocene activity of large landslides in the study area corresponds to the ages of several previously dated landslides both in an adjacent region as well as within the Central European context. With respect to the historical quiescence of the DSLs and DSGSDs in the area and because the slopes have not been destabilized, even during the most extreme hydrometeorological events within the last few decades, we infer that the hydrometeorological thresholds necessary for their activation are seldom exceeded in this area. Therefore, the highest parts of the Carpathians built by rigid thick-bedded lithology reveal a rather lower frequency of events in comparison with adjacent parts formed by claystone-dominated flysch, where several large DSLs originated in the last few decades as a consequence of heavy rainfalls.

Název v anglickém jazyce

10Be dating reveals pronounced Mid-to Late Holocene activity of deep-seated landslides in the highest part of the Czech Flysch Carpathians

Popis výsledku anglicky

Although the highest part of the Czech Outer Western Carpathians lacks significant recent landslide activity, the vast area (10Be dating reveals pronounced Mid-to Late Holocene activity of deep-seated landslides in the highest part of the Czech Flysch Carpathians20%) of their territory is occupied by relict deep-seated landslides and deep-seated gravitational slope deformations. Dating these deformations might help to determine degrees of present-day landslide hazard in that area. Based on the 10Be exposure dating of eight rocky scarps and walls of ridge-top trenches, we estimated the minimal ages of the deep-seated landslides (DSLs) and one deep-seated gravitational slope deformation (DSGSD) in the Satina River basin in the Moravskoslezské Beskydy Mts. The obtained ages (~9.7-2.9 ka) suggest Holocene slope instability in the area with a pronounced cluster of ages spanning from ~6.0 to 2.9 ka. Except for one DSL, the ages reveal rather episodic activity of gravitational movements. Mid-to early Late Holocene activity of large landslides in the study area corresponds to the ages of several previously dated landslides both in an adjacent region as well as within the Central European context. With respect to the historical quiescence of the DSLs and DSGSDs in the area and because the slopes have not been destabilized, even during the most extreme hydrometeorological events within the last few decades, we infer that the hydrometeorological thresholds necessary for their activation are seldom exceeded in this area. Therefore, the highest parts of the Carpathians built by rigid thick-bedded lithology reveal a rather lower frequency of events in comparison with adjacent parts formed by claystone-dominated flysch, where several large DSLs originated in the last few decades as a consequence of heavy rainfalls.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

<a href="/cs/project/GA17-17712S" target="_blank" >GA17-17712S: Sackung v nezaledněných pohořích: prostorové a chronologické chování hlubokých svahových deformací ve Vnějších Západních Karpatech</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

QUATERNARY SCI REV

ISSN

0277-3791

e-ISSN

—

Svazek periodika

195

Číslo periodika v rámci svazku

1.9.2018

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

180-194

Kód UT WoS článku

000442332700011

EID výsledku v databázi Scopus

2-s2.0-85050410090