The map of vertical crustal movements in Czechoslovakia and its interpretation     

Jn Vanko  Pavel Vysko il 《Journal of Geodynamics》1987,8(2-4)

In addition to the measurements carried out in the framework of the 1973–1978 international relevellings, further levelling lines have been remeasured on the territory of Czechoslovakia till now. Considering all new relevellings on the region under study, an independent adjustment of annual velocities of vertical movements in whole network was performed. The values of vertical movements were determined relatively to the fundamental benchmark Želešice in the central part of Czechoslovakia, monumented in the bedrock of the southeastern border of the Bohemian Massif. The results are presented in a map of vertical movements and preliminarily interpreted in connection to the geological features of the territory under study.  相似文献   

The dynamics of the northwestern border of the Carpathians     

Pavel Vysko il 《Journal of Geodynamics》1987,8(2-4)

The border area between the Bohemian Massif and the Carpathians arc is covered by dense networks of repeated levellings as well as horizontal (triangulation, trilateration) measurements. The results were adjusted in separate vertical or horizontal networks respectively. Derived rates of vertical and horizontal movements are presented. The properties of these movements are discussed as a background to the tectonic development of the area under study.  相似文献   

Analysis of beam nulling of a sharpe gravity meter     

Vladimír Tobyáš  Karel Diviš  Reviewer Z. Šimon 《Studia Geophysica et Geodaetica》1982,26(1):12-16

Summary The routine nulling procedure is modified on the basis of the theoretical decay of transient motion of the gravity meter beam and the time needed for its stabilizing.  相似文献   

Boundary conditions in the hydromagnetic dynamo problem     

Pavel Hejda  Reviewer G. Siráň 《Studia Geophysica et Geodaetica》1982,26(4):361-372

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Latitude variation of the LHR frequency in the outer ionosphere as an indicator of the degree of magnetospheric perturbance     

Jaroslava Bošková  František Jiřiček  Pavel Tříska  Reviewer S. Fischer 《Studia Geophysica et Geodaetica》1983,27(3):298-304

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Whistler-mode propagation of omega VLF navigation signals as observed on board of satellites     

František Jiříček  Pavel Tříska  Reviewer S. Fischer 《Studia Geophysica et Geodaetica》1983,27(4):393-407

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Holes in the Hα Eruptive Prominence Structure     

Stanislava Šimberová  Marian Karlický  Michal Varady  Gerhard Rank 《Solar physics》2001,201(1):119-131

The eruptive prominence observed on 27 May 1999 in H at Ondejov Observatory is analyzed using image-processing techniques. To understand the physical processes behind the prominence eruption, heated structures inside the cold H prominence material are sought. Two local minima of intensity (holes), the first above and the second below the erupting H prominence, have been found in the processed H images. A comparison of H images with the SOHO/EIT and Yohkoh/SXT images showed: (a) the cold H prominence is visible as a dark feature in the EIT images, (b) the upper local minimum of intensity in the H image corresponds to a hot structure seen in EIT, (c) the lower minimum corresponds to a hot loop observed by SXT. The physical significance of the H intensity minima and their relation to the hot structures observed by EIT and SXT is discussed. The time sequence of observed processes is in favor of the prominence eruption model with the destabilization of the loop spanning the prominence. For comparison with other events the velocities of selected parts of the eruptive prominence are determined.  相似文献   

Sustainable landscape management in Slovenia: Environmental improvements for the Velenje coal mining community 1991–2000     

Natalija Špeh  Dušan Plut 《GeoJournal》2001,55(2-4):569-578

The Velenje area (almost 200 km² with over 31,000 inhabitants) is based on the Šalek Valley, which became a leading area of industrialisation and urbanisation after the Second World War, with consequent pollution problems. Various industrial plants polluted the river Paka while more serious hazards arose through the coal mine which is a still causing landscape subsidence and the thermal power station in the neighbourhood of Šoštanj which is a major source of sulphur dioxide and nitrogen oxide pollution. In 1987 there was an ecological protest which marked the beginning of a sustainable development strategy for the community. During the past decade programmes have dealt with the degradation of air, soil and water to achieve cleaner air, a transformation in landuse and enhancement the river's formerly weak self-purifying capabilities. This article examines the changes in the valley since the attention of the authorities was drawn to the deterioration of living conditions. Despite the pressures of transition which have seen unemployment rising to over ten percent, significant environmental improvements have been made and the area stands as a model for the rest of the country. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

Das Typische Isoliniengrundfeld und Seine Anwendung (1. Teil)     

Bedřich Šalamon 《Studia Geophysica et Geodaetica》1963,7(2):93-107

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Chemical composition and physical properties of lithium-iron micas from the Krušné hory Mts. (Erzgebirge)     

Milan Rieder  Miroslav Huka  Dagmar Kučerová  Luděk Minařík  Jiří Obermajer  Pavel Povondra 《Contributions to Mineralogy and Petrology》1970,27(2):131-158

Compositions of natural lithium-iron micas are approximated best by the sidero-phyllite-polylithionite join. These micas contain little or no magnesium and manganese. Their octahedral sheets contain close to two trivalent cations (mainly aluminum) in small crystallographic sites and a variable quantity of lithium and R⁺² (mainly iron) in large sites. Octahedral vacancies are situated mostly in large sites. Lithium and R⁺² approach a 44 replacement relationship in micas with octahedral occupancy close to six. Lithium and fluorine show a good positive correlation (small excess of fluorine over lithium), which indicates a crystallochemical association between them. There is a less distinct positive correlation between lithium and R⁺⁴.Based on simplifications, a calculation shows that about two-thirds of octahedral vacancies are caused by substitutions within the octahedral sheet, one-third, by tetrahedral substitutions. Different methods of calculating the crystallochemical formula yield slightly different numbers of octahedral vacancies, but do not affect the mica's position in plots of physical parameters against composition. If a crystallochemical formula is calculated from analysis of a mica contaminated with quartz, topaz, or feldspar, the apparent number of octahedral vacancies increases; such a formula exhibits unusual behavior in composition plots.  相似文献