|
|
Dukovany nuclear power station. New nuclear plant. Comprehensive geomorphological analysis of closer area
Prachař, I. ; Roštínský, Pavel ; Valenta, J.
Synthesis of geological (structural, tectonic, sedimentological), local geophysical (geoelectric) and geomorphological (topographic arrangement, surface inclination, topolineaments, location of fluvial sediments) data in a close vicinity of both the existing and the newly planned nuclear plants. A detailed geomorphological review was included. The study was elaborated requested by ČEZ corporation (main Czech energetic producer) in connection with the assessment of seismic hazard. It was especially focused on features of respective sections of the Jihlava and Rokytná rivers and on nearby the power station located site of thickest moldavite-bearing deposits (with possible stratigraphic age of Upper Miocene – Lower Pliocene) in Moravia at Dalešice.
|
|
|
Dukovany nuclear power station. Seismotectonic model. Geological and paleoseismic survey. Sectio A – Assesment of the Diendorf-Boskovice fault zone
Špaček, P. ; Roštínský, Pavel ; Prachař, I. ; Švancara, J. ; Valenta, J. ; Tábořík, P.
Synthesis of geological (structural, tectonic, sedimentological), geophysical (gravimetric, geomagnetic) and geomorphological (topographic arrangement, surface inclination, topolineaments, fluvial system, segmentation of the area along the fault) knowledge on the major fault of the Diendorf-Boskovice tectonic zone. Existing data were completed with a new direct field research (ground geophysics – ERT, borehole survey, study of outcrops and geomorphological conditions along the major fault). The study was elaborated requested by ČEZ corporation (main Czech energetic producer) in connection with the assessment of seismic hazard to the near Dukovany nuclear power station related both to a renewal of working license of existing facilities (two production units) and to a planned extension of energetic system by a third production installation. It was especially focused on the nearest fault section Tetčice – Hostěradice in the Czech Republic. In the closing section, a rate of potential Upper Quaternary tectonic activity related to evidenced geotectonically active period of Lower Miocene were evaluated. The report will serve as a basic source for a compilation of seismic model of the Diendorf-Boskovice zone.
|
|
|
Preparation procedure of dwarf pine stands removal in the Hrubý Jeseník Mts. summits
Maděra, P. ; Šenfeldr, M. ; Buček, A. ; Tippner, A. ; Roštínský, Pavel ; Culek, M. ; Friedl, M. ; Vavříček, D. ; Pecháček, J. ; Špinlerová, Z. ; Matějíček, J.
The report describes a preparation procedure of dwarf pine stands removal in the Hrubý Jeseník Mts. assessing selected hazardous environmental phenomena possibly occurring in case of its realization. The hazards include hydrological conditions change, rill erosion, sheet erosion, intraskeletal erosion, snow movement, soil retention change, increase in visitors movement, timberline and spruce growth line change, and biomass quantity. A calculation of damage to forest owners due to dwarf pine stands removal from woodland is supplemented. The procedure was certificated by the Ministry of Agriculture of the Czech Republic (Certification No. 101637/2012-MZE-16222/M45).
|
|
|
Differentiation of dwarf pine covers in the Hrubý Jeseník Mts. with regard to their effects on mountain landscape and hazards related to its clearance
Buček, A. ; Culek, M. ; Friedl, M. ; Kirchner, Karel ; Maděra, P. ; Pecháček, J. ; Roštínský, Pavel ; Sedláček, A. ; Šenfeldr, M. ; Špinlerová, Z. ; Štykar, J. ; Tippner, A. ; Vavříček, D.
The report includes a collection of research studies dealing with selected effects of dwarf pine vegetation on abiotic and biotic natural components and potential hazards related to their clearance, proposed with regard to unoriginality of this species in mountain landscape of the Hrubý Jeseník Mts. Various subjects are solved, involving dwarf pine covers spatial extension, relations of dwarf pine vegetation to geomorphological processes, dominantly slope deformations, its effects on climate, hydrological and nival processes, soil conditions and spruce populations in upper timberline ecoton, geobiocenological typology of the Hrubý Jeseník Mts. summit positions, mapping dwarf pine covers, biotope evolution after their clearance and their biomass quantity.
|
|
|
Preparation procedure methodology of dwarf pine covers clearance in summit positions of the Hrubý Jeseník Mts
Buček, A. ; Culek, M. ; Friedl, M. ; Maděra, P. ; Matějíček, J. ; Pecháček, J. ; Roštínský, Pavel ; Šenfeldr, M. ; Špinlerová, Z. ; Tippner, A. ; Vavříček, D.
The study summarizes principal natural and social hazards related to planned clearance of dwarf pine covers in the Hrubý Jeseník Mts. and proposes preparation procedure of its future projects leading to their minimalization. The main hazardous factors include change of hydrological condidions, rill and sheet erosion, introskeletal erosion, snow movements, changes of soil rentention ability, increased motion of visitors, changes of timberline and spruce growth and biomass quantity of dwarf pine covers. The report is completed with calculation of damage amounts caused to forest owners due to dwarf pine clearance from forest grounds and some additional economic aspects of this activity.
|
|
|
Morphological effects of large woody debris in meandering rivers: case from the Svratka, Lužnice and Morava Rivers
Roštínský, Pavel ; Máčka, Zdeněk ; Krejčí, L.
The contribution presents the results of a complex large woody debris (LWD) research (distribution and quantity, decay status, recruitment processes) in four meandering river reaches in Moravia and south Bohemia, focused on its morphological effects (e.g. bank erosion, bed scour and aggradation, bed-forms creation – bars, pool, log-steps). Wood pieces with and without such effects are compared, and presence of the morphological effects is interpreted in relation to selected LWD characteristics (length, diameter, orientation, rootwad and treetop preservation, position within a channel). The variability of morphological effects between rivers is discussed regarding the differences in stream vegetation, and floodplain management. Examples of varied morphological effects are illustrated.
|
|
|
Mining activity at Pustina near the Míšovice village (Znojmo region)
Roštínský, Pavel ; Dokoupilová, P. ; Šmerda, J.
During the geomorphological mapping in the crystalline area of the Miroslav Horst, there were a small depression pit found out by P. Roštínský near the Míšovice village in the Znojmo region in the spring season 2006, leading to as yet unknown underground spaces. On the basis of detailed research in the wider surroundings of this pit and subsequent documentation of accessible underground galleries, it were determined that an old, as yet unrecognized mine were located on the western forested slope of the Pustina elevation. Some other entries to the underground realm, dikes and stepped terraces originated by removal of dig material and additional small pits were detected within the whole, more then one hectare-sized area. On grounds of analysed samples, there were a preliminary assumption pronounced that the underground galleries and surface landforms came to existence in connection to a prospection, especially to mining of graphite and iron ore.
|
|
|
Geomorphological position of coarse clastic deposits of the Lower Miocene in wider area of the Bohutický les upland in the South Moravia and their relation to neotectonic landscape evolution
Roštínský, Pavel
The contribution deals with geomorphological aspects of the Lower Miocene gravel formations in the area of Bohutický les upland in contact zone between the Bohemian Massif (built up of solid basement rocks) and basin of the Carpathian Foredeep (filled with weakly consolidated Lower Miocene clastic sediments). In the top part and slopes of the upland, numerous denudational relicts of formerly more extended sedimentary covers are situated, originated due to differential neotectonic movements in the area during syn- and postsedimentary periods. Coarse fraction is commonly preserved which were the least prone to surface destruction. During detailed mapping, three main lithological components of gravels were distinguished, their areal distribution and relations to solid-rock forms of present-day topography were studied and their possible genetic processes were outlined. The acquired information, added with borehole data, were related to landscape evolution of the wider South Moravia area.
|
|
|
Geomorphological inventory of selected rock forms in the central part of protected landscape area Žďárské vrchy
Kirchner, Karel ; Roštínský, Pavel
The contribution presents results of the geomorphological inventory research in the central part of the Žďárské vrchy Protected Landscape Area. The geomorphological inventory was focused on the topography of 11 natural monuments in the geomorphological sub-unit Žďárské vrchy Hills among Nové Město na Moravě, Sněžné and Svratka. The contribution shows a methodological approach to geomorphological inventory and also characterizes basic relief features. Within the natural monuments, the geomorphological inventory was concentrated on rock forms, active and potential influencing of present geomorphological processes and human impact on the relief. The authors bring results of the geomorphological inventory on selected examples of natural monuments (the Drátenická skála rock, the Malínská skála rock, the Devět skal rock).
|
|
|
Sedimentary covers in the Bohutický les Upland area and their relation to the topography evolution
Roštínský, Pavel
The paper presents basic notes on geology and geomorphology of the Bohutický les Upland (South Moravia), an asymmetric horst situated in the contact area between the Bohemian Massif and Carpathian Foredeep. The distinct western scarp and some other striking morphological features of the elevation originated through the multi-phase alpine neotectonic transtensile reactivation of the important Diendorf Fault and associated dislocations in the Neogene and Quaternary. A complicated mosaic of solid Proterozoic/Palaeozoic bed-rocks, poorly consolidated Neogene clastics and Quaternary sediments developed in the area.
|
guest ::
