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Wyświetlanie 1-15 z 23
Tytuł:
Probable two-layered permafrost formation, as a result of climatic evolution in mountainous environment of Storglaciären forefield, Tarfala, Northern Scandinavia
Autorzy:
Dobiński, Wojciech
Glazer, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2042116.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Scandinavia
permafrost evolution
two-layered permafrost
ERT
Źródło:
Polish Polar Research; 2018, 39, 2; 177-209
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of the thermal regime of permafrost during 1990–2014 in Hornsund, Svalbard
Autorzy:
Wawrzyniak, Tomasz
Osuch, Marzena
Napiórkowski, Jarosław
Westermann, Sebastian
Powiązania:
https://bibliotekanauki.pl/articles/2046826.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Hornsund
permafrost evolution
Permafrost modelling
Spitsbergen
Źródło:
Polish Polar Research; 2016, 37, 2; 2019-242
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution, genesis, and properties of Arctic soils: a case study from the Fuglebekken catchment, Spitsbergen
Autorzy:
Szymański, Wojciech
Skiba, Stefan
Wojtuń, Bronisław
Powiązania:
https://bibliotekanauki.pl/articles/2051389.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Svalbard
Cryosols
cryoturbation
permafrost
Źródło:
Polish Polar Research; 2013, 3; 289-304
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water balance, temperature and mineralization of periglacial waters in Bellsund region, Spitsbergen, summer 1986
Autorzy:
Bartoszewski, Stefan
Powiązania:
https://bibliotekanauki.pl/articles/2053176.pdf
Data publikacji:
1988
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
permafrost
water budget
Źródło:
Polish Polar Research; 1988, 9, 4; 497-503
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geophysical methods in research of permafrost in the Tatra Mountains and northern Scandinavia
Autorzy:
Dobiński, W.
Powiązania:
https://bibliotekanauki.pl/articles/294889.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
permafrost
geophysics
Tatra Mts.
northern Scandinavia
Opis:
A set of geophysical methods were implemented in the research conducted on permafrost of the Tatra Mountains and the Abisko area, Northern Sweden. Results of geophysical surveys show evidence of permafrost in both areas. Comparative studies on the occurrence of permafrost in the Tatras and in the Abisko area indicate that contemporary active as well as fossil permafrost might occur in both locations. Results of the electric resistivity, electromagnetic, shallow refraction seismic, and ground penetrating radar methods reveal similar results and might be successfully used in indirect research on permafrost in the mountainous regions.
Źródło:
Landform Analysis; 2009, 10; 26-32
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial relationship in interaction between glacier and permafrost in different mountainous environments of high and mid latitudes, based on GPR research
Autorzy:
Dobinski, W.
Grabiec, M.
Gądek, B.
Powiązania:
https://bibliotekanauki.pl/articles/2058744.pdf
Data publikacji:
2011
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Scandinavia
Spitsbergen
Tatra Mts.
glacier - permafrost relationship
Opis:
Ground penetrating radar (GPR) surveys were conducted on both the glaciers and their forefields in the Tatra Mountains, Northern Scandinavia and on Spitsbergen – between the 49 degrees and 77 degrees latitudes. The results show that the glacial and periglacial environments interpenetrate. Permafrost is present in the glacier, and glacial ice may occur in the periglacial environment. What is common for both the environments is the perennial melting point surface, with the temperature close to 0°C. In the glacier it is the boundary of the cold-temperate transition surface and on the forefield – permafrost base.
Źródło:
Geological Quarterly; 2011, 55, 4; 375-388
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rock glaciers in the Jutulsessen, Dronning Maud Land, East Antarctica
Autorzy:
Rudolph, Elizabeth M.
Meiklejohn, K. Ian
Hansen, Christel D.
Hedding, David W.
Nel, Werner
Powiązania:
https://bibliotekanauki.pl/articles/2042133.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
East Antarctica
Jutulsessen
rock glacier
permafrost
climate change
Źródło:
Polish Polar Research; 2018, 39, 1; 1-17
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of DC resistivity soundings and geomorphological surveys in studies of modern Arctic glacier marginal zones, Petuniabukta, Spitsbergen
Autorzy:
Gibas, Justyna
Rachlewicz, Grzegorz
Szczuciński, Witold
Powiązania:
https://bibliotekanauki.pl/articles/2051923.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
DC resistivity sounding
permafrost
glacial geomorphology
Źródło:
Polish Polar Research; 2005, 26, 4; 239-258
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The importance of geological conditions for the formation of past thermokarst closed depressions in the loess areas of eastern Poland
Autorzy:
Kołodyńska-Gawrysiak, R.
Harasimiuk, M.
Chabudziński, Ł.
Jezierski, W.
Powiązania:
https://bibliotekanauki.pl/articles/2060444.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
closed depressions
loess
past permafrost
thermokarst
geological conditions
Opis:
Closed depressions (CDs) are common forms occurring in the European loess belt. So far, investigations of CDs in Europe have suggested various natural or/and anthropogenic processes leading to their formation. The origins of CDs occurring in the loess areas of Poland have been the subject of few investigations, and their results have not clarified the problem. Most frequently, the age of CDs is linked with the post-glacial period, or the final stages of the formation of the loess cover. The investigations of CDs carried out in eastern Poland (Nałęczów Plateau) have so far revealed some patterns with regard to the morphometric characteristics and distribution of CDs on the regional scale. They also suggest the impact of thermokarst processes on the formation of the CDs. Five main lithogenetic types of sediment underlying the loess cover have been documented: glacial tills, clay and clayey loams, patches of glacial tills and sandy deposits, sands with gravels, and the bedrock. The relief under the loess cover has also been documented. The types of sediment as well as the relief under the loess cover have an impact on local differences of water content in the loess sediments. It was found that the variatiability of the geological conditions in the Nałęczów Plateau in the Pleistocene had an impact on the local variation of the ice content in the upper part of the former permafrost. This led to local predispositions for the development of thermokarst CDs during the Last Glacial. Areas with a high density of CDs have less permeable sediments (glacial tills, clay and clayey loams) and small relative heights under the loess cover. In the Pleistocene, these areas had higher ice content in the upper part of the permafrost. A model of thermokarst CDs development in the loess areas in eastern Poland is proposed. The model shows that the distribution and size of thermokarst CDs depends on the thickness of the loess cover as well as the types and relief of sediments underlying the loess. The development of thermokarst in the region studied may have consisted of multiple stages resulting in superimposed CDs. Between two and four stages of thermokarst CDs development can be distinguished on the Nałęczów Plateau. The two main stages occurred in MIS 4/3 (~58 ka or 55-50 ka Oerel and Glinde interstadials) and MIS 2/1 (~12 ka). These landforms may have developed also during the Denekamp Interstadial (32-28 ka) and ~15 ka. The present investigations indicate significant morphogenetic effects of permafrost melting on the contemporary relief of the loess areas.
Źródło:
Geological Quarterly; 2018, 62, 3; 685--704
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Environmental aspects of molecular composition of humic acids isolated from lake sediments of a permafrost-affected area of the Arctic
Autorzy:
Guzeva, Alina V.
Krylova, Ekaterina A.
Fedorova, Irina V.
Powiązania:
https://bibliotekanauki.pl/articles/16538448.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Arctic
Siberia
Lena Delta lakes
humic substances
permafrost
Opis:
Humic substances are ubiquitous in terrestrial and aquatic ecosystems. Humic acids (HAs) actively interact with organic and inorganic components of lake sediments. This interaction depends on the molecular structure and elemental composition of HAs. The presented research focuses on the investigation of the composition and molecular structure of humic acids isolated from lakes located in the Lena Delta in the Russian Arctic. The findings of the research are needed to estimate the potential capacity of humic acids to bind microelements, particularly toxic metals, in stable compounds. Surface sediment samples (0–10 cm) were collected from 8 lakes by Van Veen grab during the summer period of the “Expedition LENA 2019”. We analyzed elemental composition of the HAs samples. The results showed that the studied HAs of lake sediments are characterized by low nitrogen content and prevalence of aliphatic fragments in their molecular structure. Furthermore, it was found that the studied humic acids are less mature, showing mineralization processes dominant over humification, and have relatively low potential to complexation compared with soils of the Lena Delta as well as lake sediments of territories with more boreal climate conditions.
Źródło:
Polish Polar Research; 2021, 42, 3; 173-191
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air temperature in high-altitude areas as exemplified by the Tatra Mountains
Autorzy:
Jurczak, Krzysztof
Kędzia, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/2058408.pdf
Data publikacji:
2021
Wydawca:
Instytut Meteorologii i Gospodarki Wodnej - Państwowy Instytut Badawczy
Tematy:
air temperature
concave forms
convex forms
Tatras
permafrost
Opis:
The climate of a high-altitude postglacial cirque, such as Kozia Dolinka, is conducive to the occurrence of permafrost. Both the depth of permafrost and the area it covers, as well as the presence of year-round snow patches, can serve as indicators for assessing the impact of global warming on the climate of mountains, including the Tatras. With few meteorological stations to survey the remote and inaccessible high-altitude areas of the Tatra Mountains, any research must rely on measurements spanning limited time periods. Against this background, the 5-year series of temperature measurements from the Kozia Dolinka cirque obtained by the Institute of Geography and Spatial Organization of the Polish Academy of Sciences (IGiPZ PAN) can be used to analyze air temperature patterns on concave and convex terrain forms in the alpine climate zone if compared to the results of measurements from stations of the State Hydrological and Meteorological Service located nearby, i.e. the Kasprowy Wierch HighMountain Meteorological Observatory and the Hala Gąsienicowa Nival Research Station of the Institute of Meteorology and Water Management, National Research Institute (IMGW-PIB). This study confirms that there is a relationship between air temperature and the formation and duration of snow cover on concave and convex terrain forms. It also reveals a hitherto unknown fact that concave terrain forms, i.e. postglacial cirques, of the alpine zone have milder thermal conditions in winter than convex terrain forms. The analyses highlight the need for further, more detailed research using modern automated meteorological stations.
Źródło:
Meteorology Hydrology and Water Management. Research and Operational Applications; 2021, 9, 1-2; 1--13
2299-3835
2353-5652
Pojawia się w:
Meteorology Hydrology and Water Management. Research and Operational Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Timing of the final disappearance of permafrost in the central European Lowland, as reconstructed from the evolution of lakes in N Poland
Autorzy:
Błaszkiewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/2058749.pdf
Data publikacji:
2011
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Late Glacial
permafrost disappearance
buried ice
lake basins
Opis:
Accumulation of sediments in the lake basins of the Starogard Lakeland, Northern Poland, an area which was entirely ice-covered during the last glaciation, started at different times, beginning during the Late Glacial. Sedimentation continued till the beginning of the Holocene (Preboreal). The principal factor causing the asynchronous start of the lake development was the variation in melting processes of buried dead-ice blocks. The preservation of dead-ice masses in some depressions until the Preboreal leads to the conclusion that the ultimate disappearance of permafrost in the study area occurred only at the beginning of the Holocene.
Źródło:
Geological Quarterly; 2011, 55, 4; 361-374
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
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