Wyniki wyszukiwania - Biblioteka Nauki

1

Cechy sedymentologiczne i wiek osadów równiny zalewowej Słupi

100%

Florek W.

Prace i Studia Geograficzne

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1988

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tom 09

EN

The investigations carried out by the author up to the present place the age of the Słupia river flood plain in the sub-Atlantic period - 1850±110 B.P. Gd.-864. The deposits forming the flood plain reach ca 4 m of thickness and they are underlain by older deposits including grey boulder clay defined as older clay from the last glaciation (the Vistulian). The differences in the lithological development of deposits in the river-bed and beyond it in both investigated points, result both from natural causes (accumulating effect of the „Bydlino threshold” in reference to the investigation point in Słupsk) and from anthropogenic factors (accumulating effect of damming-up devices in Słupsk and the draining effect of subterranean erosion below the Krzynia dam - in reference to the investigation point at Dębnica Kaszubska). The quartz grain rounding of the deposits is poor both in the flood plain and on the terrace lying above it. They contain large quantities of α-type grains and a very small amount of γ-type grains which makes the deposits resemble morainic and even waste deposits. The features of the quartz grain surface evaluated under the scanning microscope and the binocular have confirmed the conclusion of the low degree of fluvial grain abrasion. A striking fact is the large number of corrosive pits due to the effect of a strongly chemically active environment. It is possible that it was a pelagic environment (Eems sea). Similar marks of the survival of features of another environment have been observed on the grain surface of some heavy minerals the composition of which has also confirmed the low degree of fluvial abrasion of the deposits. The composition of heavy mineral is the proof of an increased inflow of morainic and fluvioglacial material coming from the denudation and erosion of post-glacial deposits. It may be connected not only with the commonly observed Holocene tendency of low-land rivers to cut into the ground, but also with increased denudation of the drainage area due to intensified settlement in the river valley and on its slopes. All the investigations have shown the low degree of fluvialisation of the deposits. Preciser technics (in the analysis of the surface of quartz grains and of some heavy minerals) have revealed some features of deposits connected with the environments in which the deposits were accumulated, then incorporated into the mass of the Vistulian ice-sheet and carried by it into the area of Pomerania. The action of the Vistulian glacial environment, towards its close, and of the late glacial and Holocene fluvial environment has not been able to efface those features.

2

Antropopresja a holocenskie i wspolczesne procesy fluwialne na obszarze Srodkowego Pomorza i Pobrzeza

100%

Florek W.

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tom 6

49-60

3

Combinatorial structures in spin models : algorithms for generation of operator matrices

100%

Florek W.

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tom Vol. 7, nr 1

41-54

EN

Two combinatorial algorithms, generation of ordered partitions of N with no more than m parts and decompositions of N-element set into subsets with cardinalities given by a partition [k] = [k0 k1 ... km bullet bullet1] are presented and their possible applications to finite (mesoscopic) spin systems are indicated. The flow charts, listings, and results of test runs are provided.

4

Pozycja czarnych dębów w osadach teras rzecznych i sposób ich fosylizacji w świetle badań z doliny dolnego Bobru

100%

Florek W.

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tom 31

5

Combinatorial structures in spin models : a method of operator matrices generation

63%

Bucikiewicz S. , Florek W.

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tom Vol. 7, nr 1

27-39

EN

Finite spin models, applicable to investigations of mesoscopic rings, give rise to eigenproblems of very large dimensions. Efficient, and as exact as possible, solutions of such eigenproblems are very difficult. A method leading to block diagonalization of Hamiltonian matrix is proposed in this paper. For a given symmetry group of a Heisenberg Hamiltonian commuting with the total spin projection (i.e. with the total magnetization being a good quantum number) appropriate combinatorial and group-theoretical structures (partitions, orbits, stabilizers etc.) are introduced and briefly discussed. Generation of these structures can be performed by means of algorithms being modifications of standard ones. Main ideas are presented in this paper, whereas the actual form of algorithms will be discussed elsewhere.

6

Morfologia plaż wybrzeży Wysp Zielonego Przylądka jako odzwierciedlenie ich litologii i warunków hydrodynamicznych

63%

Florek W. , Leczynski L.

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tom 41

EN

The authors presented the findings from the morphological and structural research of several beaches located on some of the Cape Verde Islands. These islands constructed from granulometrically and petrographically varied rocks, mostly origanated from Mesozoic and Tertiary volcanites. They are also influenced by tides: semidiurnal tides which reach a height of 0.5-1.5 m, and steady trade winds which blow from the north-east. It was revealed that the beaches in question in terms of their morphological and lithological features can be classified as environments characterised by considerable energy of coastal processes.

7

Górnoholoceńskie i współczesne formy i osady pozakorytowe w dolinie środkowej Wieprzy

51%

Kaczmarzyk J. , Florek W. , Olszak I. J.

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tom Vol. 7

80--94

PL

Celem autorów było rozpoznanie osadów pozakorytowych w dolinie środkowej Wieprzy i możliwie dokładne określenie ich wieku oraz miejsc i warunków ich akumulacji na równinie zalewowej. Zastosowano przy tym zestaw metod geomorfologicznych i geologicznych odnoszących się do analizy form występujących na równinie zalewowej i i budujących je osadów.Wcelu określenia ich wieku wykorzystano datowania radiowęglowe, datowania archeologiczne i w odniesieniu do osadów mineralnych – metodę termoluminescencyjną. Analizom poddano osady basenu powodziowego, osady wypełniające różnowiekowe paleomeandry oraz subfosylne i współczesne osady pozakorytowe.

EN

The aim of the study has been to recognize overbank deposits in the middle Wieprza valley, including their precise dating and assessment of local conditions of sedimentation. It is based on geomorphological and geological research of floodplain landforms and deposits. Ages have been determined using radiocarbon method, archaeological dating and, for minerogenic deposits, TL dating. Analyses have been performed on floodplain basin deposits, palaeomeander infills, and subfossil and recent overbank deposits. The studied palaeomeanders have variable infills from various periods of the Sub-Atlantic. They are accompanied by diversified point bar deposits. Floodplain basin deposits have a similar, Sub-Atlantic age. Both types of deposits are overlain by flood deposits, which have accumulated since the early Middle Ages. Contemporary flood deposits of the Wieprza river differ from the sub-fossil ones through more restricted occurrence, resultant from channelization and channel incision. Therefore, in comparison to the pre-channelization period, the extent of floods is smaller and does not encompass the entire Holocene floodplain. Flood overbank deposits form only in the immediate vicinity of the channel.

8

Hydrotechnic structures on the Pomeranian rivers - a reaction to extreme hydrologic phenomena in the 19th century (in the example of the upper Wieprza)

51%

Florek W. , Jaromij J. , Skwierawska M.

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nr 1

9

Subfosylne pnie w osadach wypełniających dolinkę erozyjno-denudacyjną koło Mazowa (w dolinie Wieprzy)

51%

Tylman I. , Krapiec M. , Florek W.

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nr 08

10

Intensity and character of cliff evolution near Ustka

51%

Florek W. , Kaczmarzyk J. , Majewski M.

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nr 2

11

Changes in the range of forests and the use of lands in the catchments of small lower Wieprza tributaries in historical times

51%

Majewski M. , Florek W. , Daleki D.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

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2018

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tom 22

EN

The subject of the study were changes in land use over the last 400 years, including forest areas. The research covered the area, the range of which is determined by the basins of three small left-bank tributaries of the Wieprza River and its direct catchments (Northern Poland). The analysis included selected historical sources and, above all, maps issued in the years 1618-2008. It was found that in the studied area the border between forest and non-forest areas was established in the Middle Ages and subsequent changes in its course were of evolutionary nature. Until the midnineteenth century there was significant decline in forest area, which was related to the acquisition of areas mainly for arable fields as well as meadows and pastures. Subsequent changes of forest areas, studied for periods 1836-1934 and 1934-2008 were relatively small, but they were accompanied by significant modifications of the forest species composition. Relatively the biggest changes in the last distinguished period included built-up areas with orchards, where a decrease in occupied areas of almost 25% was noted.

PL

Przedmiotem opracowania były zmiany użytkowania gruntów w ciągu ostatnich 400 lat. Badania objęły obszar, zasięg którego wyznaczają zlewnie trzech lewobrzeżnych dopływów Wieprzy oraz jej zlewni bezpośrednich. Stwierdzono, że na badanym terenie granica las – obszary nieleśne ustaliła się już w średniowieczu, a późniejsze zmiany jej przebiegu miały charakter ewolucyjny. Do połowy XIX wieku był widoczny wyraźny spadek powierzchni leśnej, co powiązane było z pozyskiwaniem obszarów głównie dla pól uprawnych oraz łąk i pastwisk. Kolejne zmiany terenów leśnych prześledzone dla okresów 1836-1934 i 1934-2008 były stosukowo niewielkie, ale towarzyszyły im wyraźne modyfikacje składu gatunkowego lasu – wzrost udziału świerka i sosny. Relatywnie największe przemiany w ostatnim wyróżnionym okresie (1934-2008) objęły obszary zabudowane z sadami, dla których zanotowano spadek zajmowanych powierzchni wynoszący blisko 25%. Tendencja ta związana była głównie z wyludnianiem się wsi w ostatnich dekadach.