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    Wyświetlanie 1-4 z 4
    Tytuł:
    Shoreline dynamics of Calypsostranda (NW Wedel Jarlsberg Land, Svalbard) during the last century
    Autorzy:
    Zagórski, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/2051564.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic
    Spitsbergen
    coastalzone
    shoreline changes
    sediment supply
    Źródło:
    Polish Polar Research; 2011, 1; 67-99
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sediment Transport Issues Related to a Planned Cross-cut through the Vistula Spit, Poland
    Autorzy:
    Kaczmarek, L. M.
    Ostrowski, R.
    Szmytkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/241444.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
    Tematy:
    Vistula Spit
    cross-cut
    waves
    sediment transport
    breakwaters
    shoreline changes
    Opis:
    In order to make a navigable connection between the Vistula Lagoon and the Baltic Sea independent of an attitude of the Russian authorities, a cross-cut in the Polish part of the Vistula Spit is planned. The cross-cut will constitute an alternative waterway with respect to the existing one, leading through the Pilawa Strait which belongs to the Russian territorial waters. The new outlet will require breakwaters and an approach channel on the open sea side, as well as a waterway across the Vistula Lagoon to the harbour of Elbląg. The planned cross-cut is located about 3 km from the root of the Vistula Spit, at Skowronki village. The paper comprises an analysis of regional wave parameters in a mean statistical year on the basis of the Baltic wave climate reconstructed for the period of 44 years, together with a calculation of the longshore sediment transport rates. An influence of the planned coastal structures on the shoreline evolution, as well as the approach channel silting-up rates, in the first 10 years after the construction of the cross-cut, are estimated. An optimised layout of the planned approach channel and lengths of the planned breakwaters are recommended to facilitate the maintenance of the coast and the new waterway.
    Źródło:
    Archives of Hydro-Engineering and Environmental Mechanics; 2010, 57, 2; 119-137
    1231-3726
    Pojawia się w:
    Archives of Hydro-Engineering and Environmental Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Palaeoecology of basins of organic sediment accumulation in the Reserve Dury
    Autorzy:
    Kowalewski, Grzegorz
    Milecka, Krystyna
    Powiązania:
    https://bibliotekanauki.pl/articles/2027621.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    floating mire
    pollen analysis
    lacustrine sediments
    shoreline changes
    postglacial and Holocene succession
    Opis:
    The Reserve Dury, Tuchola Pinewoods, Poland, includes five depressions with no outflow filled up with biogenie sedi- s q ments. They undergo terrestrialization processes to a high degree. In four of the basins there are still some open water areas surrounded by floating mire with raised and transitional bog plants. For the needs of protection service officers some palynological and geological research were carried out. All the geological cores were described in detail following the Troels-Smith system. The deepest core Dury I was selected for pollen analysis. Ten Local Pollen Assemblage Zones (L PAZ) show the history ofregional and local plant communities. On the basis of two air photographs, modem dynamics of floating mire in four basins were evaluated. The results allow us to correlate the geological layers, to describe the Late Glacial and Holocene succession of plant cover at Dury I site, and to show the stages of filling-in of basins with lacustrine sediments and peat.
    Źródło:
    Studia Quaternaria; 2003; 73-82
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of Shoreline and Associated Landuse/Land cover Changes along Part of Lagos Coastline, Nigeria
    Autorzy:
    Akinluyi, F. O.
    Adebola, A. O.
    Adeseko, A. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/100826.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Śląski. Wydział Nauk o Ziemi
    Tematy:
    shoreline changes
    Land use
    Land cover
    LULC
    accretion
    erosion
    Lagos
    linia brzegowa
    zmiany
    pokrycie terenu
    użytkowanie terenu
    erozja
    Nigeria
    Opis:
    The city of Lagos, Nigeria has undergone rapid increase in population due to economic and commercial activities. As a result of this, there has been a persistent change in Land use/Land cover (LULC) of the city and shoreline through the years. This observation necessitated the use of multi-temporal satellite data to characterize shoreline changes between 1984 and 2016. Therefore, the study attempts to determine the shoreline change during the study period and the coastal land use and land cover (LULC) of the study area. Satellite data was acquired and subjected to some image processing techniques such as image enhancement, supervised classification, and shoreline extraction. The digital shoreline analysis system (DSAS) in ArcGIS environment was utilized to cast transects and calculate statistical parameters for the shoreline and spatial data used was Landsat TM, ETM and OLI for the years 1984, 1990, 2000, 2004 and 2016 respectively. The results indicate that LULC changes in built-up areas increases rapidly during the years (1984-2015) from 12.2 -36.2%, water bodies increased from (1984-1990-2000) from 52%, 54%, 52% and reduces to 47.4% in the year 2015 while vegetation cover reduces drastically through the year range from 36%, 33%, 29%, 24% and 16%. A total of 1034 transects were generated with 100m spacing and the average rate of change was calculated for the 32 year period (1984-2016). The linear regression rate (LRR) shoreline result shows a mean of -0.59m/year where 73.1% of transect fall under erosion and 61.8% accretion respectively. The end point rate (EPR) and net shoreline movement (NSM) analysis revealed mean shoreline change of -0.57m/year and -18.1m/period respectively from 1984-2016. The EPR and NSM results both revealed that 231 transect or 22.3% experienced erosion, and 805 transect or 77.9% with accretion. It was observed that significant accretion rate recorded along most sections of the shorelines is attributed to beach nourishment activities.
    Źródło:
    Contemporary Trends in Geoscience; 2018, 7, 1; 59-71
    2299-8179
    Pojawia się w:
    Contemporary Trends in Geoscience
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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