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Wyświetlanie 1-3 z 3
Tytuł:
How high - resolution DEM based on airborne LiDAR helped to reinterpret landforms : examples from the Sudetes, SW Poland
Autorzy:
Migoń, P.
Kasprzak, M.
Traczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/294709.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
lidar
DEM
geomorphometry
geomorphological mapping
Sudetes
Opis:
The paper reviews recent advances in landform mapping and interpretation in the mountainous terrain of the Sudetes (SW Poland), possible due to the availability of high-resolution airborne LiDAR data. They are particularly useful in the recognition of minor landforms and their spatial patterns in the montane forest belt and in the dwarf pine zone in the most elevated parts of the Sudetes. The use of LiDAR data has allowed to both re-evaluate landforms known before, especially their extent and cross-relationships, as well as to discover surface features that have escaped attention before. The examples discussed include glacial and periglacial landforms in the Karkonosze, morphological signatures of mass movements in the Stołowe Mountains, fluvial features and morphotectonic analysis in the Izerskie Mountains. Although LiDAR immensely increases the scope for landform recognition and mapping, image interpretation should be verified in the field. Despite theoretical capability of LiDAR-derived models to show even landforms 1–2 m in length, 4–6 m seems the more realistic threshold size unless surface features are distinctly linear and continue over long distances.
Źródło:
Landform Analysis; 2013, 22; 89-101
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Steep slopes in the Sudetes and their morphotectonic interpretation
Autorzy:
Migoń, P.
Placek, A.
Żyszkowska, W.
Powiązania:
https://bibliotekanauki.pl/articles/2059195.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Sudetes
tectonic geomorphology
neotectonics
mountain fronts
rock strength
DEM
Opis:
The Sudetes is a block-faulted mountain range in Central Europe, at the NE margin of the Bohemian Massif. In the late Cenozoic it has been subject to differen ial up lift and subsidence and currently represents a horst-and-graben structure, superimposed on older relief due to rock-controlled denudation and erosion. In this paper, the distribution of steep slopes (>15grade and >25grade) is analyzed using a Digital Elevation Model (DEM) of 50 m spatial resolution, and their morphotectonic significance is discussed. Steep slopes occur in four major settings: heavily dissected and most elevated highlands, straight mountain fronts, narrow sinuous escarpments, and deeply incisedriver valleys. The former in particular may indicate areas subject to recent uplift, which is followed by efficient fluvial incision, so that little pre-up lift topography has survived. The image of many mountain fronts on the slope map is rather poor, which may be explained by the mechanical weakness of the rock building the footwall. At the sametime, the association of the majority of tectonically-induced steep slopes with the most resistant rocks suggests that the intensity of recent uplift is generally low compared with the long-term rates of denudation and erosion.
Źródło:
Geological Quarterly; 2009, 53, 2; 219-232
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zasięg obszarów objętych osuwiskami w Górach Kamiennych (Sudety Środkowe) : porównanie map geologicznych i cyfrowego modelu wysokości z danych LiDAR
The extent of landslide-affected areas in the Kamienne Mountains (Middle Sudetes) : a comparison of geological maps and a LiDAR based digital elevation model
Autorzy:
Migoń, P.
Jancewicz, K.
Kasprzak, M.
Powiązania:
https://bibliotekanauki.pl/articles/2075163.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
landslides
digital elevation model (DEM)
lidar
geological mapping
Sudetes
osuwiska
cyfrowy model wysokości
LIDAR
mapowanie geologiczne
Sudety
Opis:
The east-central part of the Kamienne Mountains in the Sudetes has long been known as an area where landslides occur in abundance. Their extent was shown on first detailed geological maps from the early 20th century and later on Polish geological maps published in the 1970 and 1990. The total landslide area mapped was about 100 ha. The availability of LiDAR data allowed to build digital elevation models of very high resolution and to attempt landslide mapping using diagnostic landform assemblages as guidelines. 30 separate landslides have been mapped, including complex landslide areas involving overlapping landslide bodies oflikely different origin. The total landslide area is at least300 ha, while the largest complexes cover 40-50 ha. LiDAR-based models proved extremely useful in landslide mapping, espe- cially in forested areas.
Źródło:
Przegląd Geologiczny; 2014, 62, 9; 463--471
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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