Wyniki wyszukiwania - BazTech

1

Middle and Late Pleistocene terrestrial snails from the Middle Dniester area, Ukraine (based on Mykola Kunytsia’s collections)

Popiuk Yana, Ridush Bogdan, Solovey Tatiana

Geological Quarterly

|

2021

|

Vol. 65, No. 1

art. no. 6

EN

Extensive collections of land molluscs from the many sections of Middle and Late Pleistocene deposits in the region of the Middle Dniester River were made by Professor Mykola Kunytsia (1925-2002). These collections, now at the Natural Museum, Yuriy Fedkovych Chernivtsi National University, were for the most part analysed, but remained partially unpublished. M. Kunytsia used them for regional reconstructions of palaeolandscapes during various stages of the Pleistocene. In our study, we used these collections to assess the land snail diversity in the region during consecutive stages of the Middle and Late Pleistocene. Our analysis of faunas of cold and warm stages showed that the latter were more diverse. While all or most of the cold stages had many species in common, the faunas of the warm stages were more heterogeneous. Such a feature may play an essential role in Quaternary biostratigraphy.

2

Flooded wetlands mapping from Sentinel-2 imagery with spectral water index : a case study of Kampinos National Park in central Poland

Solovey Tatiana

Geological Quarterly

|

2020

|

Vol. 64, No. 2

492--505

EN

Flood monitoring of wetlands and floodplains is a new issue in remote sensing, as compared to the mapping of open water bodies. The method based on spectral water indices, calculated on the basis of green, red and shortwave infrared bands, is one of the most popular methods for the recognition of a water body in multispectral images. The recently introduced Sentinel-2 satellite can provide multispectral images with high spatial resolution. This new data set is potentially of great importance for flood mapping, due to its free access and the frequent revisit capabilities. In this study, three popular water indices (Modified Normalized Difference Water Index, Normalized Difference Pond Index and Normalized Difference Turbidity Index) were used. The efficiency of the proposed method was tested experimentally using the Sentinel-2 image for the Kampinos National Park in Poland. The experiment compared four extraction algorithms including three based on individual water indicators and one on a combination of them. The results showed that the 10-metre false colour composite produced significantly improved the recognition of flooding in wetland areas by comparison with single spectral water indices. In this way, flooded wetlands were mapped based on the Sentinel-2 data set for the years 2017-2018.

3

An analysis of flooding coverage using remote sensing within the context of risk assessment

Solovey Tatiana

Geologos

|

2019

|

Vol. 25, No. 3

241--248

EN

Results of research of the identification of flooding as a result of groundwater table fluctuations on the example of the valley of the River Vistula, with the use of multi-spectral Sentinel-2 images from the years 2017-2018 are presented. An analysis of indexes of water use, calculated on the basis of green, red and shortwave infrared (SWIR) bands, for extraction of water objects and flooded areas was carried out. Based on the analyses conducted, a mapping method was developed, using three water indexes (MNDWI Modified Normalised Difference Water Index, NDTI Normalised Difference Index and NDPI Normalised Difference Pond Index). Results show that the 10 metre false colour composite RNDTIGNDPIBMNDWI obtained significantly improved submerged extractions more than did individual water indexes. Moreover, the 10-m-images of MNDWI and NDPI, obtained by the sharpening High Pass Filter (HPF), may represent more detailed spatial information on floods than the 20-m-MNDWI and NDPI, obtained from original images.

4

Wetlands of the Volhynian Polissia (Western Ukraine) : classification, natural conditions of distribution and spatial difference

Solovey Tatiana

Geological Quarterly

|

2019

|

Vol. 63, No. 1

139--149

EN

The post-glacial areas are characterized by favorable conditions for the formation of wetlands as a result of the widespread occurrence of depressions without outflow - center for the development of wetlands. The studies of morphogenetic conditions of the wetland development in Volhynian Polissia within the territory of Ukraine and the formation of their water regime reveal several features of their distribution and typological variety. The location of wetlands were characterized in reference to the shape of base/subsoil and its lithology. The typical structure of post-lacustrine, paludificational, riverside and spring peatlands of the Volhynian Polissia were shown and their development were also discussed. The wetland evolution under the influence of the postglacial landscape degradation leads to disappearance of the depression wetlands in glacial forms, increase of the peat bog trophicity and the level of peat dissolution. The supply conditions and characteristics of water regime are determined for separate peatlands. According to the origin and water flow/supply four types of wetland were extracted: ombrogenic, topogenic, soligenic and fluviogenic. It was found that the reasons of the high marshes areas (21%) in Volhynian Polissia are the geological and geomorphological conditions retaining/stopping the runoff and also local groundwater circulation system.

5

Skład chemiczny wód podziemnych w strefie kontaktu z siedliskami hydrogenicznymi

Solovey Tatiana, Jóźwiak Krzysztof

Biuletyn Państwowego Instytutu Geologicznego

|

2019

|

nr 476, Hydrogeologia z. 17

115-121

PL

W artykule przedstawiono wyniki wykonanych w 2017 r. badań składu chemicznego wód podziemnych 61 siedlisk hydrogenicznych znajdujących się w obrębie Polski. Badane obiekty prezentują cztery rodzaje siedlisk (mułowiska, namuliska, podmokliska i torfowiska) usytuowane w ośmiu typach form morfogenetycznych. Przeprowadzono analizę wpływu różnorodnych osadów organicznych na kształtowanie składu chemicznego wód podziemnych występujących w ich strefie kontaktowej. Na podstawie otrzymanych wyników można wnioskować, że rodzaj osadów organicznych rzutuje na specyfikę składu chemicznego wód podziemnych w otoczeniu siedlisk hydrogenicznych. Wody podziemne torfowisk cechują się najwyższymi stężeniami składników zależnych od rozkładu substancji organicznej, natomiast mułowisk – metali ciężkich.

EN

The paper presents the research results of groundwater chemical composition in 61 hydrogenous habitats in Poland in 2017. The examined objects represent four types of habitats (telmatic organic marshes, alluvial mineral marshes, periodic moistlands and peatlands) located in eight different sorts of geomorphological forms. The impact analysis of diverse organic sediments on groundwater chemical composition in their contact zone has been conducted. The results reveal that the type of organic sediments impinges on the idiosyncrasy of groundwater chemical composition in the surroundings of hydrogenous habitats. The groundwater of peatlands is characterized by the highest concentrations of elements depending on organic matter decomposition, while the groundwater of telmatic organic marshes – of heavy metals.