27 research outputs found
Estimation of risks of coal mining projects on relief of the Moravian-Silesian Carpathians in the Czech Republic: an engineering geomorphological case study the of Trojanovice mining area
The aim of the paper is prediction and estimation of risks of planned hard coal deep mining in Trojanovice mining area below sensitive young terrain of the Moravian-Silesian Carpathians and impact of mining activities on the relief. The authors carried out detailed geomorphological mapping of the area, compiled digital geomorphological map and 3-D model of geomorphological hazards. The engineering-geomorphological analysis has shown that planned underground mining activities will accelerate geodynamic processes in the area and cause substantial changes of mountain and highland relief.The aim of the paper is prediction and estimation of risks of planned hard coal deep mining in Trojanovice mining area below sensitive young terrain of the Moravian-Silesian Carpathians and impact of mining activities on the relief. The authors carried out detailed geomorphological mapping of the area, compiled digital geomorphological map and 3-D model of geomorphological hazards. The engineering-geomorphological analysis has shown that planned underground mining activities will accelerate geodynamic processes in the area and cause substantial changes of mountain and highland relief
Neogene and Pleistocene deposits in the area Brno-Švédské šance
Excavations on the building site situated in the SE part of the city of Brno exposed Jurassic, Neogene and Quaternary deposits. The sedimentary petrographic analysis of deposits and geomorphic study has shown variations in the source area of Neogene marine deposits and terrestrial fluvial sedimentation during the Pleistocene. The uppermost terrestrial fluvial sediments are interpreted as terrace sediments of the Svitava River. The fluviatile sands and gravels reveal braided fluvial style acting in periglacial conditions of the Lower Pleistocene.Excavations on the building site situated in the SE part of the city of Brno exposed Jurassic, Neogene and Quaternary deposits. The sedimentary petrographic analysis of deposits and geomorphic study has shown variations in the source area of Neogene marine deposits and terrestrial fluvial sedimentation during the Pleistocene. The uppermost terrestrial fluvial sediments are interpreted as terrace sediments of the Svitava River. The fluviatile sands and gravels reveal braided fluvial style acting in periglacial conditions of the Lower Pleistocene
Demography and Dispersal Ability of a Threatened Saproxylic Beetle: A Mark-Recapture Study of the Rosalia Longicorn (Rosalia alpina)
The Rosalia longicorn or Alpine longhorn (Coleoptera: Cerambycidae) is an endangered and strictly protected icon of European saproxylic biodiversity. Despite its popularity, lack of information on its demography and mobility may compromise adoption of suitable conservation strategies. The beetle experienced marked retreat from NW part of its range; its single population survives N of the Alps and W of the Carpathians. The population inhabits several small patches of old beech forest on hill-tops of the Ralska Upland, Czech Republic. We performed mark-recapture study of the population and assessed its distribution pattern. Our results demonstrate the high mobility of the beetle, including dispersal between hills (up to 1.6 km). The system is thus interconnected; it contained ∼2000 adult beetles in 2008. Estimated population densities were high, ranging between 42 and 84 adult beetles/hectare a year. The population survives at a former military-training ground despite long-term isolation and low cover of mature beech forest (∼1%). Its survival could be attributed to lack of forestry activities between the 1950s and 1990s, slow succession preventing canopy closure and undergrowth expansion, and probably also to the distribution of habitat patches on conspicuous hill-tops. In order to increase chances of the population for long term survival, we propose to stop clear-cuts of old beech forests, increase semi-open beech woodlands in areas currently covered by conifer plantations and active habitat management at inhabited sites and their wider environs
New geomorphologic regionalization of the Czech republic – 2005
In Agency of Nature Conservation and Landscape Protection of Czech Republic decided to create new digital map of geomorphological regions of Czech Republic using ArcView GIS methodology. The scale 1:500 000 was chosen for a new map based on digital map product ArcČR 500. The authors distinguished 10 geomorphological systems, 27 geomorphological subsystems, 93 regions, 268 subregions and 935 wards. The map was printed in colours and will be part of prepared second edition of Geographical Gazetteers of Czech Republic – Lowlands and Mountains and of Landscape Atlas of Czech Republic
Geomorphologic units of the Czech Republic – new geomorphologic regionalization of state territory
In Agency of Nature Conservation and Landscape Protection of Czech Republic decided to create new digital map of geomorphological regions of Czech Republic using ArcView GIS methodology. The scale 1:500 000 was chosen for a new map based on digital map product ArcČR 500. The authors distinguished 10 geomorphological systems, 27 geomorphological subsystems, 93 regions, 268 subregions and 935 wards. The map was printed in colours and will be part of prepared second edition of Geographical Gazetteers of Czech Republic – Lowlands and Mountains and of Landscape Atlas of Czech Republic
Geomorphological Regions of the Czech Republic 2005: using ArcView GIS Methodology
In 2005 was in Agency of Nature Conservation and Landscape Protection of Czech Republic decided to create new digital map of geomorphological regions of Czech Republic using ArcView GIS methodology. Authors distinguished 10 geomorphological systems, 27 geomorphological subsystems, 93 regions, 268 subregions and 935 wards
New facts about old maps of the territory of the former Czechoslovakia
The authors have searched the archives for information concerning the large-scale mapping of Czechoslovakia in the period 1921-1950, when the improvement and updating of older maps inherited from the Austro-Hungarian Monarchy was carried out and new large-scale mapping was launched. Several map sets resulted from the mapping, yet they did not cover the whole territory of Czechoslovakia. Among the sets are: Czechoslovak revised topographical sections of the Austrian 3rd Military Survey, Czechoslovak preliminary maps in Beneš projection, Czechoslovak definitive maps in Křovák projection, German maps to the scale 1:25,000 called “Sonderausgabe” (Special Edition), “Karte des Sudetenlandes” (Map of Sudetenland), “Karte der Slowakei” (Map of Slovakia), and “Messtischblätter” surveyed during WWII. According to the authors’ research these maps covered 69.4% of the territory of Czechoslovakia as it was in 1938 and 75.6% of its territory in 1950. Surveying methods had improved over time and included the use of aerial photography.48950
Quantitative monitoring of slope movements at the Břidličná hora Mt. (Hrubý Jeseník Mts., Czech Republic, EU)
Monitoring of scree cover (blockfield) on a plot located on slopes of the Břidličná hora Mt. (1358.0 m a.s.l.) in the Hrubý Jeseník Mts. in the NE part of the Czech Republic has shown various slow movements of the majority of the blocks in the period of 1972-2008. Irregular and fluctuating movements without a certain trend were observed in 28 percent of cases (rotation and tilting of blocks). By the elevation of 30% blocks moved from minus 10 to minus 50 mm, by 10 percent they moved from minus 50 to 100 mm. Extreme elevation movement values of downslope movements have been observed in 7 percent of blocks (from minus 276 to minus 436 mm). The rest (25 percent) of block was stable.314