Wszystkie pola: geomorphometry - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Geomorfometria - parametry morfometryczne w charakterystyce rzeźby terenu
The Morphometric Relief Characteristic on a Basis of Digital Terrain Models
Autorzy:: Wieczorek, M.
Żyszkowska, W.
Powiązania:: https://bibliotekanauki.pl/articles/204516.pdf
Data publikacji:: 2011
Wydawca:: Polskie Towarzystwo Geograficzne
Tematy:: geomorfologia
analiza przestrzenna
NMT
powierzchnie 3D
GIS
geomorfometria
geomorphology
spatial analyses
DTM
3D surfaces
geomorphometry
Opis:: Autorki przedstawiają geomorfometrię jako dziedzinę związaną z określaniem morfometrycznych cech powierzchni terenu, jej podstawowe problemy oraz metody oparte na numerycznych modelach terenu.
Morphometry, which has been accompanying geography sińce 19th century, establishes numerical parameters describing Earth surface relief. Every type of measurement is conditioned by certain methodological assumptions which determine the way they are conducted. In the process it is very important to adjust the scale of the elaboration to the size of forms under analysis and to the goal of research. The choice of the size of reference units in which morphometric parameters are determined is equally essential. A.F. Pitty (1969), A.J.W. Gerard and DA. Robinson (1971) stressed the relation between the calculated slope angle and the size of the interval in which the angle is measured, even during measurements in open terrain. Morphometric parameters in traditional morphometry were determined on the basis of contour-line image of relief. Slope and slope aspect were then determined. Nowadays, the parameters are calculated on the basis of digital terrain models in the form of TIN or GRID. The article presents the algorithms for calculation of slope and slope aspect with the use of raster model. Depending on the number of adjacent grids considered in calculations, the algorithms for the determination of slope and slope aspect base on two, three, four, eight and nine points (P.L. Guth 1995). Among basic attributes of topographic surface describing the shape of the slope is surface curvature,
Źródło:: Polski Przegląd Kartograficzny; 2011, T. 43, nr 2, 2; 130-144
0324-8321
Pojawia się w:: Polski Przegląd Kartograficzny
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Wykorzystanie danych georadarowych SRTM-3 w analizie zróżnicowania ukształtowania terenu Polski
Use of SRTM-3 georadar data in the analysis of differentiation of the Polands surface relief
Autorzy:: Śleszyński, P.
Powiązania:: https://bibliotekanauki.pl/articles/204161.pdf
Data publikacji:: 2009
Wydawca:: Polskie Towarzystwo Geograficzne
Tematy:: morfometria
geomorfometria
ukształtowanie terenu
SRTM
Polska
morphometry
geomorphometry
land relief
Polska
Opis:: W artykule przedstawiono analizy morfometryczne obszaru Polski. Wykonano mapy hipsometryczną, deniwelacji, spadków, kierunków nachyleń i odchyleń standardowych. W badaniach wykorzystano wysokościowe dane satelitarne SRTM-3 o rozdzielczości 3x3 (60-65x90 m), które do celów badań zgeneralizowano do siatki 125x125 m, a następnie do heksagonów o powierzchni 0,14 i 3 km2. Dane te, ze względu na szczegółowość, powinny być bardzo przydatne w analizach morfometrycznych, w tym na potrzeby praktyki.
The article discusses the results of research on the differentiation of land relief in Poland based on altitude data from SRTM {Shuttle Radar Topography Mission), which is released in the resolution of 3x3 (for Poland's latitude it is 60-65x90 m). Calculations were based on the data in lower resolution done on the grid of 125x125 m. The article presents classic morphometric analyses, a hypsometric map (fig. 2) and maps of differences of relative altitudes (fig. 4), slope angles (fig. 5) and slope directions. Percentage of area in high a.s.l. altitudes and slopes by region were also calculated (tabl. 1 and 2) The author suggests a new method of presentation of differentiation of surface relief through the analysis of variation of standard relative altitude in regular geometrical figures (fig. 7). Maps of Poland in 1:5,000,000 prepared for the article were generalized using a network of hexagons of 0,14 and 3 km2 each (respectively 2,300,000 and 104,200 cells for the area of Poland), within which particular variables were averaged. The research showed high usefulness of SRTli data, particularly in scales below 1:100,000. This data is very detailed and can be applied for various morphometric analyses, which are currently revived becat of this, particularly in geomorphology, hydrology and pedology. Application of computer techniques radio reduces the time needed for tedious calculations. In the case of classic morphometric analyses high hopes are raised by data mining techniques and cluster analysis in general, which facilitate discovery of often difficult to perceive, nevertheless crucial regularities the morphometric differentiation of the Earth's surface. This can help to explain morphogenetic and landscape-forming processes. The last section of the article discusses the possibilities of application of detailed altitude data beyond the traditional range of Earth sciences (geology, physical geography), i.e. in socio-economic study and spatial economy. For more advanced application it is however necessary to eliminate the influence of some land cover forms, forests in particular. It is particularly important in lowland and flatland areas.
Źródło:: Polski Przegląd Kartograficzny; 2009, T. 41, nr 3, 3; 237-252
0324-8321
Pojawia się w:: Polski Przegląd Kartograficzny
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "geomorphometry" wg kryterium: Wszystkie pola

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język