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Abstract
Margold, M., Treml, V., Petr, L. and Nyplová, P., 2011. Snowpatch hollows and pronival ramparts in the Krkonoše Mountains, Czech Republic: distribution, morphology and chronology of formation. Geografiska Annaler: Series A, Physical Geography, 93, 137–150. DOI: 10.1111/j.1468‐0459.2011.00422.x
Abstract
Two types of landforms attributed to the geomorphological effects of long‐lasting snow accumulations, snowpatch hollows and pronival ramparts, were studied in the Krkonoše Mountains, Czech Republic. Factors influencing the distribution and morphology of snowpatch hollows were examined using statistical analysis of field‐measured and DEM‐modelled snowpatch hollow characteristics. Snowpatch hollows were classified into two groups. The first group comprises hollows developed mainly in erosional incisions from streams on low‐relief summit planation surfaces. The hollows of this group are relatively small and display signs of recent activity, with development during the Holocene. The second group consists of larger snowpatch hollows developed in debris‐covered slopes of the highest summits, closely related to the cryoplanation terraces occurring in the area. The hollows of this group are suggested to have developed in the periglacial environment of the glacial periods. The age and degree of activity of pronival ramparts, occurring only at two sites in the study area, were determined using several methods (Schmidt hammer, lichenometry, pollen analysis, and radiocarbon dating). The appearance of these pronival ramparts differs between the two sites as a result of the different geological setting. Both the ramparts in the Harrachova jáma cirque, consisting of coarse granite debris, and the rampart in the Úpská jáma cirque, developed of mica‐schist clasts, have been active during the late Holocene and are considered to be active even today.
Acknowledgements
This study was supported by grant project KJB301110804 provided by Grant Agency of Czech Academy of Sciences. Václav Treml was further funded by the institutional research project MSM 0021620831. We would like to thank the reviewers, associate editor and Zbyněk Engel for their remarks on the earlier version of the manuscript. We also wish to thank David Hardekopf for language correction.
Additional information
Notes on contributors
Martin Margold
Martin Margold (corresponding author), Department of Physical Geography and Quaternary Geology, Stockholm University, 10691 Stockholm, Sweden. Email: [email protected]
Václav Treml
Václav Treml, Department of Physical Geography and Geoecology, Charles University in Prague, Albertov 6, 128 43 Praha 2, Czech Republic. Email: [email protected]
Libor Petr
Libor Petr, Department of Botany, Charles University in Prague, Benátská 2, 128 01 Praha 2, Czech Republic. Email: [email protected]
Petra Nyplová
Petra Nyplová, Department of Physical Geography and Geoecology, Charles University in Prague, Albertov 6, 128 43 Praha 2, Czech Republic. Email: [email protected]