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标题：IDENTIFICATION OF QUATERNARY FLUVIAL TERRACES IN HUNGARIAN SAMPLE AREA USING STATISTICAL ANALYSIS OF GEOLOGICAL DRILLINGS AND DIGITAL ELEVATION MODELS IDENTIFICAREA TERASELOR FLUVIATILE CUATERNARE .N ZONA UNGARIEI FOLOSIND ANALIZA STATISTIC. A FORAJELOR GEOLOGICE .I MODELE DE ELEVA.IE DIGITAL.
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作者：Titusz BUGYA
期刊名称：Geographical Phorum
印刷版ISSN：1583-1523
出版年度：2007
卷号：6
页码：43-43
出版社：Universitaria publishing house, Craiova
摘要：Identification of fluvial terraces has a great importance to create right theories of the evolution of a given river. Recognition, identification of these terraces is a classical task of geomorphology. Highresolution topographic maps, field experiences, probing are needed in this kind of work. Method showing in my presentation uses other routines. This method is based on the DEM (digital elevation model) and on the analysis of databases of geological boreholes of the sample area. The first step was the derivation of peaks of sample area using DEM scaled 1:50,000. The second step was the statistical analysis of dispersion of elevations of peaks within the sample area. In the third step, I derived the thickness of the Quaternary bed and the locations of Quaternary fluvial gravels and loess. The fourth step was the common statistical analysis of elevation classes of peaks derived from DEM and of the distribution of borehole's elevation data. In the fifth step, I searched for elevation classes wherein at least two of the attributes below had a local maximum: thickness of the Quaternary bed, occurrence of the Quaternary gravels, occurrence of the Quaternary loess, number of peaks. These classes, as the control examinations show on control areas, correspond to the terraces found by classical geomorphologic methods. The terraces from the Tokaji hills were recognized and published using the presented method.
关键词：DEM, fluvial terraces, quaternary, statistical analysis, geological boreholes.