AUC GEOGRAPHICA
AUC GEOGRAPHICA

AUC Geographica (Acta Universitatis Carolinae Geographica) is a scholarly academic journal continuously published since 1966 that publishes research in the broadly defined field of geography: physical geography, geo-ecology, regional, social, political and economic geography, regional development, cartography, geoinformatics, demography and geo-demography.

AUC Geographica also publishes articles that contribute to advances in geographic theory and methodology and address the questions of regional, socio-economic and population policy-making in Czechia.

Periodical twice yearly.
Release dates: June 30, December 31

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The journal has been indexed by the Polish Ministry of Science and Higher Education (MSHE) on the list of scientific journals recommended for authors to publish their articles. ICI World of Journals; Acta Universitatis Carolinae, Geographica.

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AUC GEOGRAPHICA, Vol 46 No 2 (2011), 15–30

Spatio-temporal activity of mass movements in the Krušné Hory Mountains (Czech Republic): dendrogeomorphological case study

Jan Burda

DOI: https://doi.org/10.14712/23361980.2015.28
published online: 18. 03. 2016

abstract

This article utilizes dendrogeomorphology to investigate the spatial and temporal variation of mass movement dynamics on south-eastfacing slopes of the Krušné Hory Mountains, an area affected by open-pit mining. It is based on 93 samples collected from 35 disturbed Fagus sylvatica trees. These samples were taken in five model locations, representing the most problematic sections of the entire area. For reasons of sample depth, the analysis was limited to the period from 1900 to 2006. The article focuses on growth disturbances such as eccentric growth of annual tree-rings and abrupt growth changes. The strongest disturbances were most commonly found in trees located near the base of the mountains, where growth disturbances has occurred periodically, since 1900. To analyze past mass movement dynamics, we introduce a “creep rate”, defined as the proportion of eccentric tree-rings per decade. The results clearly demonstrate that “creep rates” culminated during the period from the 1940s to the 1970s, as a result of deep-seated slope failure the developed during the 1950s near the foottoe of the mountains. Prostorová a časová aktivita svahových pohybů v Krušných horách (Česká republika) Hodnocení prostorové a časové variability svahových pohybů na svazích Krušných hor se primárně opírá o výsledky letokruhové analýzy (hodnocení excentrických letokruhů a růstových změn) 93 vzorků odebraných z 35 buků lesních (Fagus sylvatica). Při geomorfologickém mapování nebyly v zájmové lokalitě mezi Jezerkou (707 m n. m.) a zámkem Jezeří identifikovány recentní projevy skalních řícení a sesouvání, nicméně bylo konstatováno, že v oblasti dochází k ploužení kvartérních sedimentů. K akceleraci těchto pohybů dochází epizodicky, zřejmě v důsledku zvodnění kvartérních sedimentů vodou. Kontinuální pohyby v celém území se neprokázaly. Největší dynamiku pohybu sledujeme v údolí Šramnického potoka od 50. let 20. stol. Primární příčinou akcelerace pohybů je vznik hluboce založené svahové deformace, která vznikla poddolováním území během hlubinné těžby. Naopak dopad povrchové těžby na akceleraci creepových pohybů byl prokázán jen na přelomu 80. a 90. let, a to pouze u čtyř stromů.

keywords: dendrogeomorphology; tree-ring analysis; mass movements; creep; Krušné Hory Mountains

Creative Commons License
Spatio-temporal activity of mass movements in the Krušné Hory Mountains (Czech Republic): dendrogeomorphological case study is licensed under a Creative Commons Attribution 4.0 International License.

210 x 297 mm
periodicity: 2 x per year
print price: 200 czk
ISSN: 0300-5402
E-ISSN: 2336-1980

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