Temat: river Valley - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Palaeogeographical significance of the Eemian biogenic sediments at Bór site (Warta River valley, Central Poland)
Autorzy:: Petera-Zganiacz, J.
Borówka, R.K.
Forysiak, J.
Miotk-Szpiganowicz, G.
Pawłowski, D.
Powiązania:: https://bibliotekanauki.pl/articles/2060307.pdf
Data publikacji:: 2013
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: gyttja
palynology
cladocera
geochemistry
Warta River valley deposits
Opis:: An investigated area is located in the middle reach of the WartaRiver valley. During drillings in the Bór site organic deposits such as detritous calcareous gyttja and calcareous detritous gyttja has been documented in a depth between 14,9 and 16,6 m. The organic deposits are covered by mineral, mostly sandy deposits. The accumulation took place in the small lake formed as an abandoned channel. Palynological analysis led to conclusion that biogenic accumulation began at the end of Wartanian and took place at least to the Eemian Interglacial optimum. Results of palynological, Cladocera and geochemical analysis inform about water level changes and increasing of trophy status of the reservoir. Presence of Mesozoic substratum very close to the palaeolake bottom influenced significantly chemical features of the organic deposits. As Eemian organic deposits are uncommon in the Warta River valley, the Bór site seems important for palaeogeographical reconstructions of the Warta River valley during Eemian Interglacial.
Źródło:: Geological Quarterly; 2013, 57, 4; 687--700
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Pleistocene river valleys and ice sheet limits in the Southern Mazovian Lowland, central Poland
Autorzy:: Żarski, M.
Powiązania:: https://bibliotekanauki.pl/articles/2059923.pdf
Data publikacji:: 2002
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Pleistocene
Vistula river valley
ice sheet limit
glaciation
Opis:: The buried and present-day Vistula valleys has developed along tectonic linear structures of NW-SE trend. The Vistula river valley and its tributaries essentialy maintained their courses during the Małopolanian, Ferdynandovian, Mazovian and Eemian interglacials. During the Małopolanian, Mazovian, Ferdynandovian interglacials the gradient of the buried Vistula valley was 0.57?, while during the Eemian Interglacial and during deposition of Vistulian terraces and Holocene flood plain deposits it was about 0.34?, due to from tectonic movements. The width of the buried Vistula valley was the greatest during the Eemian Interglacial (15 km) and during the Vistulian (17 km) when strong lateral erosion occurred. The stratigraphy of the Quaternary deposits is based on palynologically documented sites of the Ferdynandovian, Mazovian and Eemian interglacials. This region was covered by ice sheets of the Nidanian, Sanian, Wilgian, Liviecian, Odranian and Wartanian glaciations during eight advances. Liviecian and Wartanian Glaciation maximum limits were determined in the study area. Interstadial fluvial deposits, between the premaximum and maximum stadials of the Odranian Glaciation, were recognised and termed sediments of the Gniewosznian Interstadial. The deposits of the Wartanian Glaciation have been TL dated at 146-203 ka BP and the Odranian at 212-280 ka BP.
Źródło:: Geological Quarterly; 2002, 46, 2; 147-164
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Późnoplejstoceński rozwój doliny Niemna w rejonie Grodna na Białorusi
Late Pleistocene evolution of the Niemen River valley near Grodno in Belarus. Prz. Geol.
Autorzy:: Lindner, L.
Sańko, A.
Powiązania:: https://bibliotekanauki.pl/articles/2074560.pdf
Data publikacji:: 2008
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Białoruś
dolina rzeki Niemen
zlodowacenie poozierskie
Belarus
Niemen River valley
Poozerian Glaciation
river terraces
Opis:: Based on geological and paleobotanic data, the oldest valley system of the Niemen River is linked in the study area with a river located southward of Grodno, within a parallel valley from the Alexandrian (Mazovian) Interglacial. The foundations of the present-day, almost meridian course of the Niemen River valley, are connected with a system of post-glacial lakes from the Sozhian (Wartanian) Stadial of the Pripethian (Odranian) Glaciation, later filled with organic deposits of the Muravian (Eemian) Interglacial. Analysis of six sites with these deposits (Pyszki, Rumlówka, Poniemuń, Żukiewicze, Bohatyrowicze and Kniażewodce) indicates that they represent three lakes located at different altitudes. During the maximal range of the Dvinian (Main) Stadial of the Poozerian (Vistulian) Glaciation, the lakes were beyond the range of the ice-sheet. At this time, the highest located deposits of the Poniemuń-Żukiewicze lake were covered by sander sediments, whereas the Bohatyrowicze-Kniażewodce and Pyszki-Rumlówka lakes that were located at lower levels, were covered by fluvio-periglacial deposits and varved clays of the Skidel ice-dammed lake. Retreat of the ice-sheet of the Dvinian Stadial, resulting in outflow of water from the Skidel ice-dammed lake through the area with the two lower interglacial lakes, triggered the formation of a system of the Niemen River supra-flood terraces above them. Accumulation of the highest of these terraces (VI), during the first phase of the Skidel lake outflow, marks the beginning of the present-day Niemen River valley formation that probably began in the younger phases of the Dvinian ice-sheet retreat. Further evolution of the valley is linked with the Late Glacial formation of the middle (III-V) supra-flood terraces and with the Holocene formation of the lower (II, I) supra-flood terraces.
Źródło:: Przegląd Geologiczny; 2008, 56, 1; 73-80
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Morfologia, struktury sedymentacyjne, cechy uziarnienia i geneza wstęg piaszczystych równiny zalewowej doliny dolnej Wisły między Górskiem i Szynychem
Morphology, sedimentary structures, granulometric properties and origin of sandy ribbons developed on the lower Vistula River valley floodplain between Górsk and Szynych
Autorzy:: Kordowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/2074558.pdf
Data publikacji:: 2007
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: równina zalewowa
Dolina Dolnej Wisły
floodplain
sandy ribbons
lower Vistula river valley
Opis:: The paper presents the results of morphometric, structural and granulometric analyses carried out on sandy ribbons developed on the lower Vistula river floodplain in the Torun and Unisław Basins. The landforms identified were classified in respect to their shape, sedimentary structures and degree of preservation. Their origin and relation to other flood deposits were described and illustrated in the map of thickness and extent of sandy flood deposits in the Świecie Basin.
Źródło:: Przegląd Geologiczny; 2007, 55, 9; 785-794
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Koncentracja wybranych metali ciężkich w utworach wezbraniowych Wisły w okolicach Magnuszewa w świetle morfogenezy form fluwialnych (środkowy bieg rzeki, centralna Polska)
Heavy metals concentration in Vistula flood deposits in the Magnuszew area (middle river course, central Poland) in the background of valley bottom morphogenesis
Autorzy:: Falkowska, E.
Falkowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/2063055.pdf
Data publikacji:: 2011
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: dolina rzeczna
osady aluwialne
metale ciężkie
river valley
alluvial deposits
heavy metals
Opis:: Koncentracja metali ciężkich w osadach rzecznych jest ściśle związana z charakterem procesów sedymentacji, transportu i erozji rzecznej. Ich występowanie w rzekach wiąże się bowiem głównie z cząstkami mineralnymi i organicznymi przenoszonymi w zawiesinie. Z tego też względu dynamika przepływu, szczególnie wielkich wód, ma kluczowe znaczenie dla dystrybucji i wtórnego uruchamiania metali ciężkich w tym środowisku. W trakcie badań prowadzonych w dolinie Wisły w okolicach Magnuszewa stwierdzono, że rozkład koncentracji metali ciężkich w osadach powierzchniowych odzwierciedla zróżnicowanie dynamiki poszczególnych środowisk tarasu zalewowego. Najwyższe zawartości Cu, Co, Zn, V, Cr i Ni występują w obrębie osadów budujących stożki napływowe wód wezbraniowych, uformowanych u wylotu rynien przelewowych (krewasy). Największe zawartości Sr, Pb i As stwierdzono w osadach wypełniających przeobrażone starorzecza. Najniższe zawartości badanych metali ciężkich występują w osadach głównych kanałów przepływów powodziowych.
The concentration of heavy metals in fluvial deposits is strictly connected with the character of the river deposition, transport and erosion processes. Their presence in river waters is mostly connected with the smallest particles, organic as well as mineral transported in suspension. The dynamics of the high waters flow is of crucial importance for heavy metals distribution and activation after alluvia reworking. Investigations were carried out in Vistula River valley near Magnuszew (middle course). Differentiation of heavy metals distribution connectedwith recognised morphodynamic zones was detected. The highest content of Cu, Co, Zn, V, Cr and Ni was established in deposits of alluvial fans formed within crevasse zones. The highest content of Sr, Pb i As was detected in deposits filling up transformed oxbow lakes. The lowest content of heavy metals was determined in the main flood flow channel zones.
Źródło:: Biuletyn Państwowego Instytutu Geologicznego; 2011, 446 (1); 29--40
0867-6143
Pojawia się w:: Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Kompleksowe badania osuwisk w dolinie Brdy w Koronowie k. Bydgoszczy
Complex investigations of landslides in the Brda river valley in Koronowo near Bydgoszcz
Autorzy:: Zabuski, L.
Mrozek, T.
Świdziński, W.
Kulczykowski, M.
Laskowicz, I.
Powiązania:: https://bibliotekanauki.pl/articles/2075162.pdf
Data publikacji:: 2014
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: landslides
monitoring
Brda river valley in Koronowo
osuwiska
dolina Brdy w Koronowie
Opis:: In the recentyears intensified landslidingwas observed in the surroundings and in the town of Koronowo near Bydgoszcz. (Krajeñskie Lake District). The gently undulated moraine upland, a wide valley of the Brda river, its relatively steep valleysides and incised valleys of tributaries are morphologicfeatures related to modeling by North Polish Glaciation. Quaternary tills alternated with fluvioglacial sands and gravels are underalined by Miocene clay and mud with brown coal intercalations. Due to such morphologic and geologic setting the study area isprone to slope instability. Failure apt soil massifs were assigned to 4 groups. Out of 32 identified landslides, 9 were selected for detailed examination. To register a nature and rate of failures a complex monitoring system was installed on slopes where the selected landslides resulted in severe damages to municipal infrastructure. The system was facilitated with inclinometers andpiezometers, supported by a network of GPS-RTK geodetic benchmarks as well as with a recording weather station. The performed examination revealed that the most unfavourable arrangement of the layers is, when under a non-cohesive soil (e.g. sand, gravel) lies a cohesive impermeable layer (e.g. clay, loam). The landslides are rather shallow ones (except 2 incidents) with slow rate of displacement of an order offew mm/year. The landslide triggeringfactor is water originatingfrom precipitation and snow melting. Influence of water was especially significant in early Spring 2011, due to the combined effect ofsnow melting and infiltration of thawing water originating from the former, exceptionally high rainfalls. The influence of hydrologic conditions on slope deformations is complex. There is a significant timelag between a movement initiation and unfavourable hydrometeorological conditions. That is exemplified with the landslide that was initiated in February-March 2011 in consequence of atmospheric conditions of November-December 2010. The obtained results formed the background for inventing engineering treatment measures aiming at current remedial stabilization of slopes and mitigation ofpossible landsliding in the future.
Źródło:: Przegląd Geologiczny; 2014, 62, 9; 472--480
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Foraminiferal bioevents in the upper Campanian to lowest Maastrichtian of the Middle Vistula River section, Poland
Autorzy:: Peryt, D.
Dubicka, Z.
Powiązania:: https://bibliotekanauki.pl/articles/2059982.pdf
Data publikacji:: 2015
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Campanian-Maastrichtian boundary
foraminifera
bioevents
stratigraphic correlation
Middle Vistula River Valley section
Opis:: The Upper Campanian–Lower Maastrichtian interval of the Middle Vistula River Valley section records the following benthic foraminiferal bioevents in ascending stratigraphical order: LO of Globorotalites michelinianus, FO and LO of Globorotalites emdyensis (=G. hiltermanni), FO of Bolivina incrassata, FO of Bolivinoides miliaris, FO of Angulogavelinella gracilis (=A. bettenstaedti), LO of Gavelinella monterelensis, FO of Osangularia navarroana, FO of Bolivina decurrens and FO of Neoflabellina reticulata. These events are recorded in very similar stratigraphic positions in the Lägerdorf-Kronsmoor succession (northern Germany) and in the succession of eastern England and, at least some of them, in eastern Europe. Accordingly they can serve as important markers for stratigraphic correlation across Europe. The FOs of the planktonic species, Rugoglobigerina milamensis, R. hexacamerata and R. pennyi, in the uppermost part of the “Inoceramus” redbirdensis Zone,are very close to the Campanian–Maastrichtian boundary as defined by inoceramid bivalves (Walaszczyk, 2004) and we propose these planktonic foraminiferal bioevents as a good proxy for this boundary in temperate regions.
Źródło:: Geological Quarterly; 2015, 59, 4; 814--830
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Alluvial bottom geology inferred as a factor controlling channel flow along the Middle Vistula River, Poland
Autorzy:: Falkowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/2059483.pdf
Data publikacji:: 2007
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: alluvial basement
erosion resistant deposits
Middle Vistula River Valley
channel zone
stream zone
Opis:: Within the channel zone of the Middle Vistula River, elevations of the Holocene alluvial basement occur, composed of deposits resistant to erosion. In this paper two kinds of such forms are discussed. Within the Małopolska gorge (an upstream part of the Middle Vistula, near Kępa Gostecka and Zakrzów), the elevations are composed mainly of Upper Cretaceous and Paleogene rocks covered with clayey debris and residual lags. Below this, the elevations are built of Paleogene and Neogene soils as well as of various Pleistocene glacial deposits, and are of ten covered by residual lags. This type of valley stretch occurs in the vicinity of Dęblin. The surface of the erosion-resistant Holocene alluvial basement averages at 5-7 m below the mean water level. It is exposed on the channel bottom during high-water stages, as seen from a residual layer and from the low density of the contemporary channel deposits above them. The morphology of these elevations influences the pattern of the main stream also during mean-water stages. The trend to flood flow concentrations is also seen in the relief of the floodplain.
Źródło:: Geological Quarterly; 2007, 51, 1; 91-102
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Investigations of mass movements hazard in the Vistula River valley
Autorzy:: Ilcewicz-Stefaniuk, D.
Stefaniuk, M.
Powiązania:: https://bibliotekanauki.pl/articles/1182788.pdf
Data publikacji:: 2008
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: ruchy masowe
osuwiska
dolina Wisły
inwentaryzacja
mass movements
landslides
Vistula river valley
inventory
Opis:: Strome skarpy doliny i pradoliny Wisły sprzyjają rozwojowi powierzchniowych ruchów masowych. Dodatkowym czynnikiem katalizującym procesy osuwiskowe jest dynamika rzeki, szczególnie w okresach gwałtownych wezbrań powodziowych. Te czynniki uzasadniają wyodrębnienie doliny Wisły jako względnie jednolitego obszaru zagrożonego procesami osuwiskowymi. W dolinie Wisły wydzielono 5 rejonów koncentracji aktywnych osuwisk. Są to: zachodnia część Niziny Nadwiślańskiej, wysoczyzna lessowa okolic Sandomierza, skarpa warszawska, rejon Zalewu Włocławskiego oraz rejon Kujaw i dolnej Wisły.
Źródło:: Polish Geological Institute Special Papers; 2008, 24; 75-82
1507-9791
Pojawia się w:: Polish Geological Institute Special Papers
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Związek akumulacji metali ciężkich w osadach facji powodziowej z morfologią doliny Wisły na odcinku od Annopola do Gołębia
Relationship between the heavy metal accumulation in flood deposits and the morphology of the Vistula River Valley between Annopol and Gołąb
Autorzy:: Falkowska, E.
Powiązania:: https://bibliotekanauki.pl/articles/2074355.pdf
Data publikacji:: 2005
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: metale ciężkie
osad powodziowy
dolina Wisły
Vistula river valley
heavy metal
flood deposits
Opis:: A distinct zonality as shown in the occurrence of trace elements accumulated in the flood facies of the Vistula River between Annopol and Gołąb. Their amount may be linked with the character and dynamics of river flow in its particular stretches because the nature of the fluvial processes influences on the lithological composition of deposits. Thus the content of these elements in the deposits is related to the geomorphologic conditions of the valley evolution, such as the occurrence of gorge zones and zones with free channel development. The highest concentrations have been noted in flood deposits occurring as intercalations within the channel facies and deposited in the widest parts of the river valley. The lowest concentrations of the trace elements have been observed in the gorge zones of the valley. These are places where the flow is most dynamic, enabling only the formation of low and medium cohesive silty flood deposits with low contents of organic matter, iron oxides and calcium carbonate.
Źródło:: Przegląd Geologiczny; 2005, 53, 8; 681--686
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: O potrzebie badań geologiczno-inżynierskich wałów przeciwpowodziowych na obszarze wschodniej części Niżu Środkowoeuropejskiego
About a necessity of geological-engineering investigations on flood banks of the east Mid-European Lowland
Autorzy:: Kołodziejczyk, U.
Powiązania:: https://bibliotekanauki.pl/articles/2074340.pdf
Data publikacji:: 2005
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: dolina rzeczna
fala powodziowa
wał przeciwpowodziowy
river valley
flooding
flood bank
preventing natural disasters
Opis:: Throughout history, many times did floods in the river valleys of the East Mid-European Lowland occur. They brought about material losses and frequently hazards to human health and life as well. For centuries now, human communities have been building up flood banks in order to protect themselves against the negative impact of floods. However, the old flood banks were never investigated. First time in Poland they were surveyed after the flood in 1997. The results of investigations into the flood banks along the Odra/Oder River, which were conducted during and after the great flood of the year 1997, point out to the necessity of their renovation. The outcome of the research work carried out in Poland may be useful for the renovation and reconstruction of old flood banks and for the construction of new ones in the whole area of the East Mid-European Lowland.
Źródło:: Przegląd Geologiczny; 2005, 53, 7; 582--585
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Iły krakowieckie jako wskaźnik litostratygrafii w dolinie rzeki Sopot na Roztoczu
The Krakowiec Clays as an indicator of lithostratigraphy in the Sopot River valley in the Roztocze Region (estern Poland)
Autorzy:: Janiec, B.
Czarnecka, B.
Powiązania:: https://bibliotekanauki.pl/articles/2074422.pdf
Data publikacji:: 2006
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: iły krakowieckie
mikrofauna
paleontologia
litostratygrafia
Roztocze
Krakowiec clays
microfauna
paleontology
residuum
lithostratigraphy
river valley
Roztocze region
SE Poland
Opis:: The results of micropaleonthological studies of the Sarmatian (upper Miocene) Krakowiec Clays from primary deposit as well as re-deposited ones were applied to the analysis of the stratigraphic profile of the Sopot valley fills. The study site was at the break section of the Sopot River valley in a contact zone of southern escarpment between the central part of the Roztocze and Sandomierz Basin regions (SE Poland). Species of fossil microfauna (foraminiferans, radiolarians), sponges and mollusks, as well as residual deposits were used. The documented, even if apparently small change in the lithostatigraphic profile of the Sopot valley fills, i.e., the presence of pre-Pleistocene deposits in its floor, is very important for the valley history and for interpreting other problems of river breaks and the Roztocze escarpment zone itself, e.g., sclae of the Holocene movements elevating the Roztocze Region, and their effect on expected intensity of deep fluvial erosion. In the sub-scarp zone of the Tomaszów Roztocze subregion the Krakowiec Clays occur rather shallowly. In the Sopot valley (‘Czartowe Pole’landscape preserve) they are in contact with calcareous formations. In two levels of natural clays’exposures, a dozen or so foraminiferan taxa were found. They were also below the primary deposit on the floor levels of the Sopot valley fills. The residuum of the studied strata consists of glauconite and pre-Pleistocene quartz sands, without silicate and alumosilicate, typical for postglacial formations. The Sarmatian clays present in residue were redeposited at least in the pre-Pleistocene. From the clays top up to the surface of valley fills, are Holocene deposits. The study revealed that: (1) during the Holocene and earlier the Sopot valley fills were not removed completely; (2) the floor of the valley is made not of the youngest, Holocene strata, but much older; (3) the presence of the Sarmatian microfauna in the alluvia allows to date the studied deposits as pre-Pleistocene (Pliocene?); (4) fine quartz sands and glauconite (a specific form of hydromica) both forming the residuum of the studied valley fill levels, together with the absence of other silicates and alumosilicates that are common in the Pleistocene formations, exclude the studied Krakowiec Clays from the group of glacial or fluvioglacial (Pleistocene) formations; (5) the youngest (latest Pleistocene –Holocene) movements elevating the Roztocze Region and the resulting deep fluvial erosion do not correspond with shallow occurrence of the pre-Pleistocene valley fills; this requires further discussion.
Źródło:: Przegląd Geologiczny; 2006, 54, 10; 913-918
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Analiza powtarzalności wydzieleń geologiczno-inżynierskich w dolinie rzecznej
Repeatability analysis of geoengineering layers in river valley
Autorzy:: Wierzbicki, J.
Smaga, A.
Powiązania:: https://bibliotekanauki.pl/articles/2074257.pdf
Data publikacji:: 2014
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: sondowanie statystyczne
dolina Warty
wydzielenia geologiczno-inżynierskie
analiza statystyczna
cone penetration tests
Warta River valley
geoengineering layers
statistical analysis
Opis:: The paper presents results of geotechnical and geological investigation on flood plain of the Warta River, below the Jeziorsko reservoir. It is the section of the river, where the intensive erosion process of the river bed occurs. To stop this process thresholds are built. Their efficiency depends of ground conditions, especially spatial variability of geotechnical parameters. To describe the subsoil cone penetration tests were carried out. Subsequently Authors used statistical techniques to analyze variations of geotechnical parameters. Most of all, k-means method was applied. This well known cluster analysis is one of analysis which makes dividing subsoil into relatively homogeneous layers in different part of the river valley possible. However, Authors observed that in case of river alluvial 20% of variation of parameters values in layer is necessary to accept.
Źródło:: Przegląd Geologiczny; 2014, 62, 10/2; 721--726
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Rzeźba i osady równiny aluwialnej dolnego biegu Przemszy (Wyżyna Śląska) jako wskaźnik zmian środowiska przyrodniczego
Relief and alluvial plain sediments of the lower Przemsza River valley as indicators of environmental changes (Oświęcim Basin, South Poland)
Autorzy:: Panek, I.
Powiązania:: https://bibliotekanauki.pl/articles/2074587.pdf
Data publikacji:: 2008
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: paleogeografia
sedymentologia
dolny bieg Przemszy
Kotlina Oświęcimska
Polska Południowa
paleogeography
sedimentology
lower Przemsza River valley
Oświęcim Basin
South Poland
Opis:: Paleogeography of the lower Przemsza River valley was studied in detail. By means of sedimentological methods, C.exp.14 dating and analysis of archival cartographic sources, the chronology of environmental events has been established, along with the types of the sedimentological processes and indirectly the role of neotectonics in the shaping of the valley. The lower Przemsza River section turned out to be the area where the fluvial processes of the Vistula and Przemsza Rivers took place, which can be seen in the formation of two different lithological types of the overbank facies. These types are of key importance in distinguishing between climatic and anthropogenic phases in the upper Vistula River valley.
Źródło:: Przegląd Geologiczny; 2008, 56, 2; 124-130
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Subsurface imaging of fluvial deposits of the Wisła River valley in Kraków (southern Poland) by 2D ERT survey
Autorzy:: Bania, Grzegorz
Woźniak, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/2201218.pdf
Data publikacji:: 2022
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: electrical resistivity tomography
ERT
gradients of interpreted resistivity
2D ERT modeling
fluvial deposits
Wisła River valley
southern Poland
Opis:: We describe the application of 2D ERT (electrical resistivity tomography) surveys to investigate the spatial complexity of fluvial deposits of the Wisła River valley in the eastern part of Kraków (southern Poland). All ERT survey lines were completed within the industrially influenced floodplain of the Wisła River at two research sites. Due to the transformation of the natural state of the environment through many years of industrial activity of the ArcelorMittal Kraków plant, some of the geomorphological elements analysed have been irretrievably transformed and hidden by anthropogenic accumulations such as waste landfills and engineering structures. Hence, many years of soil contamination have changed the primary resistivity characteristics of the subsurface. For this purpose, the measurement array applied combines standard arrays, i.e., Wenner-Schlumberger and Dipole-Dipole, which gave improved results (higher resolution) in comparison to the standard single array. The data interpretation method was supported by the calculation and visualization of the vertical and horizontal gradients of the interpreted resistivity within the resistivity sections. This approach allowed accurate determination of resistivity boundaries on the ERT resistivity sections and thus helped lithological interpretation of the fluvial deposits in the research area. The resistivity of water in a channel located within one of the analysed areas has impacted some of the research results. Furthermore, 2D ERT forward modeling was implemented to generate synthetic datasets. The synthetic data allowed investigation of the influence of groundwater contamination on the resistivity distribution within superficial layers, and also tested the ability of the 2D ERT model to recognize the detailed spatial distribution of palaeomeander (meander scar) infills. All methods have provided new information on the industrially influenced floodplain of the Wisła River in Kraków.
Źródło:: Geological Quarterly; 2022, 66, 3; art. no. 23
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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