The statistical relationship between unconfined compressive strengths and the frequency distributions of slope gradients — A case study in northern Hungary

Püspöki, Zoltán; Szabó, Szilárd; Demeter, Gábor; Szalai, Katalin; McIntosh, Richard William; Vincze, László; Németh, Gábor; Kovács, Imre

doi:10.1016/j.geomorph.2005.04.011

Cited by 11 publications

(14 citation statements)

References 15 publications

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“…Water infiltrating (Győrffy 1957). Similarly, runoff from the clay which is situated between the beds also dissolves the slopes of the limestone mounds (Németh 2005 chimneys and shafts turn into inflow caves. In such karstic windows complex karstic systems can also evolve.…”

Section: Karst Processes and Landformsmentioning

confidence: 99%

Landscapes and Landforms of Hungary

Lóczy¹

2015

World Geomorphological Landscapes

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Section: Karst Processes and Landformsmentioning

confidence: 99%

Landscapes and Landforms of Hungary

Lóczy¹

2015

World Geomorphological Landscapes

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“…Based on the statements of Beavis (2000), who claims that geological structure determines the place, while lithology influences the extent of erosion, and Clayton and Shamoon (1998), who found that harder rocks statistically tend to support steeper slopes or higher landforms, we defined surface rock resistance to erosion (in MPa) and the relationship between rock strength (as a lithological feature) and the selected morphometric features of landforms (Püspöki et al 2005). In general terms the horizontal and vertical dissection of a landscape may determine the character of positive landforms (Ollier 1967), and the calculated average values may be typical for the landscape.…”

Section: Relief Valley Density and Slope Inclinationmentioning

confidence: 99%

Uppony Mountains: High Geomorphological Diversity Within a Small Area

Demeter

Szalai

2015

World Geomorphological Landscapes

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Merely of 454 m maximum elevation, the geologically and geomorphologically diverse and still dynamic Uppony Mountains is relatively rich in geomorphic features (caves, pseudocaverns, gorges, horsts, scarps, landslides, karren, natural outcrops) created by diverse processes (valley incision, derasion, mass movements, karst formation, periglacial, pedimentation). This small mountainous area with its intricate geological structure is ideal either for field investigations in order to obtain broader knowledge on the evolution of NorthHungary or to study both convergent and divergent evolution of forms generated on different rocks. Using a comparative approach, with an outlook to its environs, the quantification and numeric analysis of morphometric and lithological features combined with the traditional descriptive geomorphic approach promotes a better understanding of the area so important in the paleoenvironmental, paleogeographical reconstruction of North-Hungary. IntroductionThe Uppony Mountains of 240 km 2 area are located in northeastern Hungary, in the Bükk Mountains northern foreland. It is mainly composed of slightly metamorphosed Paleozoic siliciclastic rocks and limestones with distant Alpine contacts, surrounded by semiconsolidated Neogene marine sediments. Its uniqueness is primarily due to the particular geology: both karstic and non-soluble, as well as highly diagenized and semi-consolidated sediments occur in the area. This geology induced diverse geomorphic processes (valley incision, derasion, mass movements, karst formation, periglacial), which created a variety of landforms (small caves, non-karstic pseudo-caverns, scarps, bedrock outcrops, rock crags). The folded-imbricate structure, with the south-easterly dipping reverse faults of the PaleoMesozoic massif (Pelikán 2005), resulted in scarps of different resistance to weathering and formation of fascinating cliffs. Owing to the imbricate structure, the buried Paleozoic rocks of the neighbouring Bükk Mountains to the south (composed of Mesozoic limestone-nappes with southern vergence) can be studied here exposed on the surface. Along the abundant fault lines tectonically preformed, asymmetrically incised valleys and gorges were formed exposing the second oldest (Late Ordovician-Permian) rock assemblage of the uplifted continental floor in Hungary and thus creating an opportunity for paleoenvironmental reconstruction. The preserved Neogene cover and the traceable erosion surfaces indicate well-dated transgression and exhumation periods. Thus, the post-sedimentary (orogenic) geomorphic history of the mountains can also be well detected. The origin of landforms, the effects of selective denudation on hard and loose rocks, slope evolution and downwearing processes can be studied within a few kilometres' distance ( Fig. 20.1). Geological and Geographical SettingsThe Uppony Mountains are bordered by the Tardona Hills (E), the Bükk Mountains (S), the Ózd-Egercsehi Basin (W), the Vajdavár Hills (NW) and the tectonically preformed valley of the Saj...

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“…Due to the tilting function of the fl ume, the adjustable channel gradient allows the experimental establishment of further thresholds, e.g. between meandering and braided river behaviour (Parker, G. 1976;Püspöki, Z. et al 2005). Its signifi cance is underlined by recent papers, where the challenge of physical modelling of meandering river behaviour is pointed out (van Dĳ k, W.M.…”

Section: Braided Channel Evolutionmentioning

confidence: 99%

New opportunities for experiments in fluvial geomorphology: the flume PTETHYS

Pirkhoffer¹,

Halmai²,

Czigány³

et al. 2014

HunGeoBull

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In recent decades both physical modelling and computer simulation of fl uvial processes has undergone rapid progress. The paper summarizes the achievements of both international and Hungarian laboratory experiments in fl uvial geomorphology. Then, the new automatically governed fl ume facility, called PTETHYS (Project for Tectonical and Hydrological Simulations) recently set up at the Faculty of Natural Sciences, University of Pécs, is presented. Finally, some of the new opportunities it off ers for research in fl uvial geomorphology are briefl y demonstrated: the identifi cation of geomorphological thresholds; modelling the generation of (fl ash) fl oods and its application for the reconstruction of the architectural elements and geomorphic evolution of fl oodplains. Some important channel parameters can be quantitatively investigated: channel cross-section change, amount of bedload infl uencing braiding, current velocity distribution etc. The novelty of the facility is the easy adjustment of channel slope and continuous experimenting (no need for interruption as in the case of laserscanned experiments). The scaling necessary for quantitative analyses is also tackled.

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The statistical relationship between unconfined compressive strengths and the frequency distributions of slope gradients — A case study in northern Hungary

Cited by 11 publications

References 15 publications

Landscapes and Landforms of Hungary

Landscapes and Landforms of Hungary

Uppony Mountains: High Geomorphological Diversity Within a Small Area

New opportunities for experiments in fluvial geomorphology: the flume PTETHYS

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