Wszystkie pola: hypsometry - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Identification of tectonically active areas using DEM : a quantitative morphometric analysis of Mt. Medvednica, NW Croatia
Autorzy:: Matoš, B.
Tomljenović, B.
Trenc, N.
Powiązania:: https://bibliotekanauki.pl/articles/2059961.pdf
Data publikacji:: 2014
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Digital Elevation Models
DEM
hypsometry
asymmetry factor
longitudinal stream profiles
active tectonics
Mount Medvednica
Opis:: Mt. Medvednica is an inselberg in NW Croatia which tectonically lies at the intersection between Southeastern Alps, Northwestern Dinarides and Tisza Mega-Unit of the Pannonian basin. Due to the Pliocene-Quaternary N-S directed transpression it experienced a differential uplift between 1500-2000 m and exposes pre-Neogene and Neogene tectonic and stratigraphic units surrounded by Pliocene-Quaternary sediments. This paper evaluates a set of methods in quantitative morphometry, used here for identification of tectonically active areas within a region characterized by low-rate active folding and faulting during the Pliocene-Quaternary times. Analysis employed extraction of hypsometric curves, calculation of hypsometric integral, asymmetry factor, and statistical parameters of normalized longitudinal main stream profiles of 36 drainage basins delineated from a 25-m resolution DEM of Mt. Medvednica area. Despite lithological heterogeneity, obtained morphometric parameters are considered as fairly good indicators for discriminating tectonically active from inactive areas. Based on calculated parameters, in combination with geological data, the most tectonically active areas during the Quaternary are found at the SW corner of the Mt. Medvednica related to an active segment of the North Medvednica Boundary Fault, and in the central part of the mountain related to the Kašina fault zone subdividing mountain into the NE and SW units.
Źródło:: Geological Quarterly; 2014, 58, 1; 51--70
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: The influence of the deep seated geological structures on the landscape morphology of the Dunajec River catchment area, Central Carpathians, Poland and Slovakia
Autorzy:: Wołosiewicz, B.
Powiązania:: https://bibliotekanauki.pl/articles/100812.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Śląski. Wydział Nauk o Ziemi
Tematy:: morphotectonics
morphometry
DEM
base-levels
hypsometry
Central Carpathians
morfotektonika
morfometria
hipsometria
Karpaty
Opis:: The area of the Dunajec river basin includes several geological units in the Central Carpathian region at the Polish-Slovakian borderland. The paper focuses on the geomorphometric parameters of the drainage system to recognize the influence of the deep seated geological structures on the morphology of the Dunajec river basin (Central Carpathians). The study were enriched with analysis of the geological maps and lineaments extracted from Digital Elevation Model. According to the obtained results, the massive NW-SE trending fault zones play a vital role in the geological architecture of the researched area. The development of the secondary fault structures has been determined by these dislocations and the manifestation of their activity can be observed as deformations of some of the other tectonic structures along the main fault zones, especially at the folds’ axes. Additionally, the geometric and morphometric features of the drainage system have also been influenced by the activity of these deep structures. The tectonic activity represented by the level of morphological rejuvenation, visible in the light of the morphometric parameters of the streams and the drainage basins, varies greatly between the tectonic units. This diversity is caused by both the lithological and structural features of these geological units.
Źródło:: Contemporary Trends in Geoscience; 2018, 7, 1; 21-47
2299-8179
Pojawia się w:: Contemporary Trends in Geoscience
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Geomatics-based assessment of the neotectonic landscape evolution along the tebessa-morsott-youkous collapsed basin, Algeria
Autorzy:: Taib, Hassan
Benabbas, Chaouki
Khiari, Abdelkader
Hadji, Riheb
Haythem, Dinar
Powiązania:: https://bibliotekanauki.pl/articles/2175183.pdf
Data publikacji:: 2022
Wydawca:: Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:: tectonic activity
hypsometry index
sinuosity
asymmetry
topography
aktywność tektoniczna
wskaźnik hipsometryczny
sinusoida
asymetria
topografia
Opis:: The neo-tectonic research is interested in the study of the movements of Earth’s crust in recent geological times. It could explain the deformation mechanisms that lead to the structuring of drainage catchments. The Morsott-Tebessa-Youkous (Chabro) collapsed basin corresponds to a subsiding depression framed by brittle structures and filled with thick deposits. Our work aims to unveil the neo-tectonic activity and reconstruct the morphometric evolution of the landscape and the drainage network of the basin. For this task, our investigation applies a quantitative analysis of geomorphic indices extracted from the DEM of the study area. We used a GIS-based approach to compile seven morphometric factors namely Integral Hypsometry (HI), the Sinuosity of mountain fronts (Smf), the Valley Floor width to height ratio (VF), the Asymmetry Factor (AF), Basin Shape index (BS), and the topography (T). All these thematic parameters were processed in a Geo-database to calculate the study area’s Relative Tectonic Activity Index (IRAT) as a result. The IRAT map was categorized into three classes. The result highlighted the distribution of relative tectonic activity in the region and unveiled some unknown faults. It associated the sinuosity of rivers and the deformation of the substratum with active tectonic anomalies. This research work succeeded in drawing up a new scheme of the neo-tectonic activity and morphostructural evolution in the collapsed basin.
Źródło:: Geomatics, Landmanagement and Landscape; 2022, 3; 131--146
2300-1496
Pojawia się w:: Geomatics, Landmanagement and Landscape
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Terasy Wetliny w Bieszczadach (Karpaty Wschodnie) : próba porównania ich hipsometrii, budowy i wieku z doliną górnego Sanu
Terraces of the Wetlina River in the Bieszczady Mountains, Eastern Carpathians : an attempt at comparison of their hypsometry, structure and age with the valley of the Upper San River
Autorzy:: Kukulak, J.
Powiązania:: https://bibliotekanauki.pl/articles/295246.pdf
Data publikacji:: 2015
Wydawca:: Stowarzyszenie Geomorfologów Polskich
Tematy:: terasy rzeczne
pokrywy żwirowe
Bieszczady
Karpaty Wschodnie
river terraces
gravelly covers
Bieszczady Mountains
Outer Carpathians
Opis:: W górskiej dolinie rzeki Wetlina (Bieszczady Wysokie) znajduje się schodowy system sześciu teras rzecznych (T1–T6). Wszystkie terasy mają wysokie cokoły skalne i żwirowe pokrywy akumulacyjne. Przetrwały w tej dolinie także residua żwirów staroglacjalnych. Dowiązanie wieku teras do reperu datowanych szczątków drewna i torfu na jednej z teras Wetliny (Ralska-Jasiewiczowa 1969, 1980) pozwala na wydzielenie w badanej dolinie 2–3 teras niskich (dennych) holoceńskich i 3 teras wysokich (zboczowych) plejstoceńskich. Z hipsometrycznej korelacji teras Wetliny z terasami pobliskiego Sanu wynika, że w dolinie Wetliny terasy są znacznie wyższe i mają bardziej zaburzone profile podłużne. Lokalne zmiany wysokości teras Wetliny i miąższości ich pokryw akumulacyjnych nie wykazują korelacji ze wskaźnikiem krętości koryta rzeki. Są one uwarunkowane względnie dużą podatnością skał strefy przeddukielskiej i ich silną fragmentaryzacją tektoniczną na erozyjne pogłębianie koryta rzeki.
A stair-case system of six river terraces (T1–T6) with accumulation covers and bedrock toe occurs in the valley of the Wetlina River. Residual deposits of earlier glaciations are also present in this valley. Correlation of the age of the terraces with the dated organic material (wood and peat) on one of the terraces (Ralska-Jasiewiczowa 1969, 1980) allows delimitation of the levels of Pleistocene terraces: 2–3 within the valley floor (low terraces) and 3 within the slopes (high terraces). Hypsometric correlation of the terraces of the Wetlina and the nearby San River indicates that the terraces of the Wetlina are considerably higher and their longitudinal profiles are more distorted. Local variability in the elevation of the Wetlina terraces and in the thickness of their alluvial covers is not correlated with channel sinuosity and may have resulted from the complex tectonic structure and relatively low resistance of the bedrock of the Fore-Dukla Zone to the erosion of the river bed.
Źródło:: Landform Analysis; 2015, 28; 29-44
1429-799X
Pojawia się w:: Landform Analysis
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "hypsometry" wg kryterium: Wszystkie pola

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język