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Wyszukujesz frazę "Polish Tatra Mts." wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Changes of thermal conditions in the Polish Tatra Mountains
Autorzy:
Żmudzka, E.
Powiązania:
https://bibliotekanauki.pl/articles/294625.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
thermal conditions
trend
Polish Tatra Mts.
Opis:
The purpose of the report is to determine trends in thermal conditions in the Polish part of the Tatra Mountains. The study makes use of the data from the weather stations in Zakopane and on Kasprowy Wierch Mt. from the years 1951–2006, and mainly from 1966–2006. Various thermal characteristics were considered. The increase of the rate of upward trend in temperature in the Tatras at the turn of the 21st century, as well as the change of the seasonal distribution of the warming in comparison with the preceding long-term periods, have been documented. In 1966–2006, significant trends in the changes of the mean, maximum and minimum temperatures have been observed in the Tatras in summer (respectively, 0.04, 0.05 and 0.03–0.04 centigrade per annum). Certain symptoms of increase of the thermal continentality have also been observed (increase of the annual amplitude of temperature). Besides, important features of changes in thermal conditions at the turn of the 21st century include an increase in the number of hot days, and even appearance of the very hot days at the foothills of the Tatras, increase of the number of frost days and decrease of the number of ice days in the high mountain part of the Tatras, as well as increase of accumulated heat of the growing season and an increase of daily amplitude of temperature across the entire profile of the Tatras.
Źródło:
Landform Analysis; 2009, 10; 140-146
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in the spruce forests of the Polish Tatra Mts. during the last 80 years
Autorzy:
Kozłowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/294585.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
spruce forests
Polish Tatra Mts.
floristic changes during 80 years
vegetation typology
Opis:
On the basis of the historical (dating from the 1920s) and contemporary phytosociological relevés, taken in the spruce forests of the Polish Tatra Mts., the changes were determined that took place in these forests. This area had been for centuries under the influence of human economic activities, mainly pasturing and wood extraction, and then protected in the Tatra National Park. These changes differ according to the altitudinal vegetation belts. In the coniferous forests of the upper montane belt, the changes due to wind breaks or tree stand ageing did not lead to transition to other forest associations. A tendency can yet be noticed of losing a part of the species combinations characteristic for the associations or higher syntaxonomic units, which might be linked with the stopping of grazing in the forests and development of the undergrowth of tall herb character. The association of the fir-and-spruce forests in the lower montane belt displayed much bigger changes. There was an increase of the role of species of the deciduous forests, while the role of the coniferous forest species was limited in the studied patches, which clearly indicates the evolution of the forests towards the beech woods, typical for the lower montane belt. This means a progressing limitation of the spruce forests in the limestone Tatras to the advantage of return of the beech woodsdominated there in older time.
Źródło:
Landform Analysis; 2009, 10; 64-69
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rekonstrukcja geometrii powierzchni lodowców z maksimum ostatniego zlodowacenia (LGM) w polskich Tatrach Wysokich (zlewnie Roztoki i Rybiego Potoku)
Reconstruction of surface geometry of the last glacial maximum (LGM) glaciers in the Polish High Tatra Mts. (drainage basins of Roztoka and Rybi Potok)
Autorzy:
Makos, M.
Nowacki, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/2074625.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
podcięcie lodowcowe
ostatnie zlodowacenie (LGM)
Polskie Tatry Wysokie
paleogeografia lodowców
glacial trimline
last glacial maximum (LGM)
Polish High Tatra Mts.
paleoglaciology
GIS
Opis:
A reconstruction of the last glacial maximum (LGM) ice surface geometry in the Polish High Tatra Mts. (drainage basins of Roztoka and Rybi Potok) is based on detailed field mapping of glacial trimlines. Obtained field data provide evidence of the ice surface elevation within the ice accumulation areas and in some cases they indicate direction of ice flow. The LGM ice-surface geometry is presented as a digital elevation model (DEM) which was created using geographic information system (GIS). Calculations of ice thickness and ice volume are based on DEM of present land topography. Reconstruction of the ice extent within ablation area is created using archival data. During LGM, the Roztoka glacier and the Rybi Potok glacier were a typical valley glaciers included into a huge glacial system being a dendritic glacier. According to acumulation area ratio (AAR) method, equilibrium line of these glaciers was situated at an elevation of about 1400 m a.s.l. It shows that nearly the whole area of the drainage basins of Roztoka and Rybi Potok have been an ice accumulation area supplying the Biała Woda glacier during LGM. Equilibrium line altitude (ELA) depression in relation to modern ELA (2300 m a.s.l.) was about 900 m. Assuming temeperature lapse rate of 0,6oC/100 m, a mean summer temperature in the Tatra Mts. was lowered of about 5,5oC. Ice area and its volume calculated for accumulation areas indicate that their relations to one another are nearly identical. It can be evidence for similar precipitation in both the Roztoka and the Rybi Potok drainage basins and an indicator of atmospheric circulation pattern which have determined climate in the Tatra Mts. during LGM.
Źródło:
Przegląd Geologiczny; 2009, 57, 1; 72-79
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrothermal ore mineralization from the Polish part of the Tatra Mts., Central Western Carpathians
Autorzy:
Sitarz, Magdalena
Gołębiowska, Bożena
Nejbert, Krzysztof
Dimitrova, Dimitrina
Milovský, Ratislav
Powiązania:
https://bibliotekanauki.pl/articles/2055847.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
tetrahedrite
hydrotherma ore mineralization
fluid inclusions
LA-ICP-MS study
Tatric Superunit
Polish part of the Western Tatra Mts.
Polska
Opis:
Several areas with hydrothermal ore mineralization are present in the Polish part of the Western Tatra Mts. Massive and disseminated sulfides, mainly minerals from the tetrahedrite group and chalcopyrite, fill quartz veins accompanied by siderite, dolomite and baryte – many of these were mined between the 16th and 18th century. This paper presents information on the mineralogy of the common sulfides and the preliminary studies of both the isotopic composition of sulfur in tetrahedrite as well as the origin of hydrothermal fluids. The most common primary sulfide minerals in the ores are tetrahedrite-(Zn) and tetrahedrite-(Fe) corresponding to Zn ranges from 1.83 to 5.87 wt.% (0.47–1.44 apfu), and Fe from 1.63 to 5.05 wt.% (0.48–1.52 apfu). The substitution of As for Sb shows maximum As content of 7.25 wt.% (1.588 apfu) which corresponds to the Sb/(Sb+As) = 0.60. Both varieties show substitutions of Bi and Hg, up 0.6 wt.% (0.049 apfu) and 0.96 wt.% (0.081 apfu), respectively, and content of trace elements: Co (max. 976 ppm), Cd (max. 735 ppm), In (max. 14 ppm). Chalcopyrite, pyrite, and galena show compositions close to the ideal formula. Differences in the content of trace elements in the studied tetrahedrite and chalcopyrite were explained by element partitioning between these minerals. The distributions of In, Ga and Sn in the studied minerals indicate that the mineralization was formed at low temperature and pressure. The homogenization temperature of the primary inclusions in quartz in the range of 120–174°C indicate the origin of mineralization in low temperature stage from low salinity fluids (up to 17.92 wt.% NaCl eq.). Stable δ34S isotopes in minerals of the tetrahedrite group suggest that the igneous fluids might be one of the sources from which ores were crystallized.
Źródło:
Geology, Geophysics and Environment; 2021, 47, 3; 159--179
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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