DEM based geomorphometric analyses of karst surface in the Republic of Macedonia

TitleDEM based geomorphometric analyses of karst surface in the Republic of Macedonia
Publication TypeBook Chapter
Year of Publication2015
AuthorsTemovski, Marjan, and Ivica Milevski
Secondary AuthorsJasiewicz, Jaroslaw, Zbigniew Zwoliński, Helena Mitasova, and Tomislav Hengl
Book TitleGeomorphometry for Geosciences
Pagination65 - 68
PublisherBogucki Wydawnictwo Naukowe, Adam Mickiewicz University in Poznań - Institute of Geoecology and Geoinformation
CityPoznań, Poland
ISBN Number978-83-7986-059-3
Abstract

Karst terrains in the Republic of Macedoniacover 12 % of its territory, generally as a number of separate karst areas with various sizes, most of which are located in the western and central parts of the country. Karst rocks are represented mostly by Triassic limestones and Precambrian marbles, with also parts composed of Paleozoic marbles and carbonate schists, Jurassic and Cretaceous limestones, Pleistocene tufa, tufaceous limestones and travertines and also Cretaceous gypsum and anhydrite. General morphometric characteristics of the karst surface were analyzed, with hypsometry, slope inclination and type, and aspect analyzed for both total karst surface and different karst rocks. Average elevation of karst terrains is 1100.4 m, reflective of the extension of karst terrains generally in mountainous regions, with limestone and marble having higher average elevations. As youngest rocks, tufaceous limestones, tufa & travertines are located mainly at lower elevations. Average slope (20.6°) is also significantly higher than mean slope of the entire country (15.4°), reflecting generally deeply incised fluvio-karstic landscapes and well preserved tectonic structures within the karst surface. Aspect analysis of karst surface shows generally even distribution between classes. Regarding slope type, large areas have linear downhill slope, especially in regards to the plan curvature. Beside that, convex terrains prevail with 28.9% for plan and 38.6% for profile curvature (with positive values for both). These results represent first attempt to analyze the general morphometric characteristics of the karst surface in Republic Macedonia. The outcome reveals certain specific characteristic of the karst surface, especially between different karst lithologies.

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