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    Wyświetlanie 1-6 z 6
    Tytuł:
    Strefy tektoniczne południowo-zachodniego Podhala
    Tectonic zones of southwestern Podhale
    Autorzy:
    Wasiluk, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074627.pdf
    Data publikacji:
    2009
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    tektonika
    lineamenty
    Podhale
    numeryczny model terenu
    tectonics
    lineaments
    Podhale Trough
    digital terrain model (DTM)
    Opis:
    Various structural observations were collected in southwestern Podhale Trough during investigations for Detailed map of Tatra Mts., scale 1 : 10 000. Fault surfaces, strikes and dips of beds and fold axes were measured in the field. Statistical analysis of results allow to recognize 5 groups of dislocations with variable types of movement, directions and age: 1) slickensides onW-E striking, almost horizontal bedding surfaces show reverse motion towards S, 2) steeply-dipping (80–90(centigrade)) faults, striking parallel to bedding and also showing reverse motion towards S, 3) vertical transcurrent faults associated with main tectonic zones, striking almost N-S, 4) normal faults striking ca 38(centigrade) (NE-SW) and 135(centigrade) (NW-SE). Attitudes of beds different from regional trend were separated. Deviations are caused by flexural bending along tectonic zones. Anomalous attitudes of beds coincide with directions of dislocations recognized in the field. A map of lineaments in the study area is also presented. Analysis of landforms on Digital Terrain Model (DTM) led to recognition of series of lineaments related to either tectonic structures or lithology. Main transverse tectonic zones were identified on the map of lineaments: Chochołowski Potok-Czarny Dunajec, Kooecieliski Potok, Mała Łąka; as well as some minor faults and zones where particular directions of faults predominate. Statistic analysis of directions of tectolineaments allows to recognize 4 main directions: 1) about 90°, associated to thrusts and folds (parallel to strikes of beds), 2) N-S and slightly oblique directions associated to transcurrent zones, 3) approximately 40(centigrade) and 4) 140(centigrade) directions associated to normal faults. Results obtained using these 3 methods (analysis of field data, analysis of DTM, analysis of attitudes of beds different from regional trend) are consistent with each other.
    Źródło:
    Przegląd Geologiczny; 2009, 57, 1; 64-64
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Trudności w wyznaczaniu osuwisk na obszarach historycznych i zurbanizowanych na przykładzie Twierdzy Przemyśl
    Difficulties in determining landslides in historical and urbanized areas : a case study of the Przemyśl Fortress
    Autorzy:
    Rycio, Edyta
    Powiązania:
    https://bibliotekanauki.pl/articles/2076018.pdf
    Data publikacji:
    2020
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Twierdza Przemyśl
    ruiny fortów
    kamieniołom
    osuwiska
    antropopresja
    Numeryczny Model Terenu
    NMT
    Przemyśl Fortress
    ruins of forts
    quarry
    landslides
    anthropopression
    DTM
    Opis:
    The Przemyśl Fortress is a huge complex of defensive objects from the turn of the 19th and 20th centuries. Various types of objects, ruins and remains of the fortress and signs of fights have been preserved to different extents in the area to this day. They constitute a huge problem when determining landslides. The greatest difficulties are caused by vegetation-covered ruins of forts, trenches, remnants of ramparts and defense ditches, and signs of fights preserved in places. Such residues can be interpreted as a landslide or a part of it, especially if they occur in a neighbourhood or inside a landslide. The problem then arises of clearly identifying the boundaries of the landslide and the correct identification of its internal forms, e.g. a devastated trench around the fort can be marked as a landslide. Similar difficulties are provided by numerous inactive quarries, excavations, clay pits, e.g. a closed limestone open-pit mine from the 19th century, located in Kruhel Wielki. Elements of the old mine are deceptively reminiscent of intra-fieldforms and they are difficult to separate from the real colluvial forms of the neighbouring landslide. Difficulties in determining landslides arise not only from the history of this region and its geological structure, but also from the degree of urbanization of the area. Strong anthropopression blurs the natural morphology of the slopes, and the limited availability of the area makes cartographic work difficult. It is difficult to distinguish between natural and artificial forms in such areas. Good examples are landslides on the ski slope, on the municipal cemetery, in the castle park and in the area of military areas, housing estates and allotments.
    Źródło:
    Przegląd Geologiczny; 2020, 68, 12; 902--914
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zagadka zaniku jeziora skaliskiego w Krainie Wielkich Jezior Mazurskich
    Mystery of the ancient Skaliska Lake in the Mazury Lakeland (NE Poland)
    Autorzy:
    Pochocka-Szwarc, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074373.pdf
    Data publikacji:
    2005
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    deglacjacja
    kopalne jezioro skaliskie
    numeryczny model terenu
    zanik jeziora
    plejstocen
    deglaciation
    glaciolacustrime basin
    catastrophic flow
    digital terrain model (DTM)
    Mazurian Lakeland
    Late Glacial
    Pleistocene
    Opis:
    In the northern part of the Great Mazurian Lakes there is a post-lacustrine plain extending over 90 km 2 . This depression, called Skaliska Basin (Kondracki, 1998), is situated NE of Węgorzewo, overlapping the state boundary between Poland and Russian Kaliningrd Region (thus the northernmost part of the structure was not accessible for study). A glaciolacustrine lake existed there during Late Pleistocene (Pochocka-Szwarc & Lisicki 2001a, 2003). Defining the exact extent and direction of outflow from the Skaliska Lake are most important aims for palaeogeographic investigation of the area. For paleogeomorphological analyses of the Skaliska Basin, the following methods were used: Digital Terrain Model (1 : 200,000 scale), Landsat TM satellite images, archival cartographic materials, and results of geological investigations accompanying compilation of sheets Budry (Pochocka-Szwarc, Lisicki 2001a) and Banie Mazurskie (Pochocka-Szwarc 2003) of the Detailed Geological Map of Poland (1 : 50,000). The study allowed to recognize the lateral extension of the paleolake, and reconstruct the sequence of events that led to catastrophic out flow towards the NW.
    Źródło:
    Przegląd Geologiczny; 2005, 53, 10/1; 873-878
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zapis typu ruchu osuwiska w rzeźbie terenu i jego obraz na wysokorozdzielczych numerycznych modelach terenu (NMT) na przykładzie wybranych osuwisk ze wschodniej części Beskidu Niskiego (Karpaty zewnętrzne, Polska)
    Landslide movement type record in morphology and its visualization on high resolution digital terrain models, exemplified by some landslides in the eastern part of the Low Beskid Mts. (Polish Outer Carpathians)
    Autorzy:
    Kaczorowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075689.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    osuwisko
    numeryczny model terenu
    DTM
    zsuw rotacyjny
    zsuw translacyjny
    spływ
    osuwisko złożone
    Beskid Niski
    Karpaty zewnętrzne
    landslide
    digital terrain model (DTM)
    rotational slide
    translational slide
    flow
    complex landslide
    Low Beskid Mts.
    Outer Carpathians
    Opis:
    Landslides are very common features in the Polish Outer Carpathians. In the classical cartography, landslides are recognized based on characteristic land relief: main and side scarps, toe, minor scarps, transverse ridges, recesses and cracks. Formerly, landslide mapping was carried out in the field, preceded by interpretation of topographic maps and aerial photographs. Nowadays, we use spatial data from airborne laser scanning (ALS). Spatial data reprocessing permits to achieve a high-resolution (pixel 1*1 m or more precise) digital terrain model (DTM). Exploration of land relief in search for landslides has become simpler and more accurate. DTM interpretation allows delimiting the boundaries of landslides and elements of their relief. By analysing groups oflandforms it is possible to determine the type of colluvium movement. In the eastern part of the Low Beskid Mts., four types of landslides predominate: rotational slides, translational slides, flows, and complex movements. Types of landslides are usually very well visible on the DTM. Information about types of mass movements can be useful during modelling further landslide activity and designing instrumental identification works and possibility ofstabilization.
    Źródło:
    Przegląd Geologiczny; 2017, 65, 1; 44--2
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie bezzałogowych statków powietrznych w dokumentowaniu geologiczno-inżynierskim
    Application of the unmanned aircraft vehicle in engineering geology documentation
    Autorzy:
    Piechota, Arkadiusz
    Sobótka, Przemysław
    Powiązania:
    https://bibliotekanauki.pl/articles/2076168.pdf
    Data publikacji:
    2021
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    bezzałogowy statek powietrzny
    BSP
    dokumentacja inżynierska z geologii
    cyfrowy model powierzchni
    DSM
    numeryczny model terenu
    DTM
    ortofotomozaika
    analiza dokładności
    unmanned aircraft vehicle
    UAV
    engineering geology documentation
    digital surface model
    digital terrain model
    ortophotomosaic
    accuracy analysis
    Opis:
    The article presents the possibilities of using unmanned aerial vehicles (UAV) in engineering geology. The first part compares the method of obtaining products from UAV with airborne laser scanning, showing its limitations and advantages. Then, examples of using the products made from photos obtained from UA V raids (digital surface model - DSM, digital terrain model - DTM and orthophotomosaic) were introduced. The examples are assigned to the individual phases of engineering geology documentation (collecting available information about the site, designing research, performing research and presenting research results). The last part presents an analysis of the accuracy ofan exemplary model created from a UAV raid based on control points measured using the GNSS-RTN method. The result of the analysis was the confirmation ofthe possibility of obtaining information about the area from the DSM, DTM and orthophotomosaic with high accuracy comparable to classic land surveying methods.
    Źródło:
    Przegląd Geologiczny; 2021, 69, 12; 861--866
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wyznaczanie terenu ochrony pośredniej ujęcia wód podziemnych : porównanie wyników uzyskanych metodami analitycznymi z modelowaniem numerycznym
    Delineation of wellhead protection area :comparative study of results obtained by analytical methods and numerical modeling
    Autorzy:
    Duda, R.
    Winid, B.
    Zdechlik, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075378.pdf
    Data publikacji:
    2015
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    ochrona wód podziemnych
    obszar ochronny
    WHP
    strefa ochrony źródeł
    metody analityczne
    model numeryczny
    czas przemieszczenia
    groundwater protection
    wellhead protection area
    WHPA
    source protection zone
    analytical methods
    numerical model
    time-of-travel
    Opis:
    In case of groundwater intakes with a low well discharge, localized in simple hydrogeological conditions, the wellhead protection area (WHPA) can be delineated by one of available analytical methods. The differences between the WHPA ranges delineated by analytical methods, give rise to the question which method would be optimal to be used to handle simple hydrogeological conditions. Analytical methods considered in the study include the Wyssling method, the Krijgsman and Lobo-Ferreira (K&L-F) method, and the Analytical Element Method (AEM). WHPA delineated using analytical methods are compared with data obtained from hydrogeological numerical model, which becomes the reference method. The study was performed for two single wells, and a simplified case was considered too, whereby two wells were represented by an equivalent one. The criterion used in the assessment is the distance upstream from the well to the zone boundary (Lu ), for various time-of-travel to the intake (1, 2, 3, 4, 5, 10, 15, 20, 25 years), and the shape and lateral extent of the WHPA. Discrepancies between the analytical methods vary depending on the time-of-travel, reaching 11% at most. Discrepancies between the analytical methods and numerical modelling results for single wells vary depending on the time-of-travel and the employed analytical approach, reaching 25% at most. For time-of-travel longer than 5 years, the maximal distances Lu calculated by the analytical methods are found to be smaller than those obtained by the reference method. The study indicate that results obtained by compared analytical methods are rather similar each other, but not similar to numerical modelling data. For scenario with the equivalent well there is major discrepancy between the reference values and analytical data.
    Źródło:
    Przegląd Geologiczny; 2015, 63, 10/1; 694--699
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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