TY  - JOUR
AU  - Jordán, Győző
AU  - Meijninger, BML
AU  - van Hinsbergen, DJJ
AU  - Meulenkamp, JE
AU  - van Dijk, PM
TI  - Extraction of morphotectonic features from DEMs: Development and applications for study areas in Hungary and NW Greece
JF  - INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
J2  - INT J APPL EARTH OBS
VL  - 7
PY  - 2005
IS  - 3
SP  - 163
EP  - 182
PG  - 20
SN  - 1569-8432
DO  - 10.1016/j.jag.2005.03.003
UR  - https://m2.mtmt.hu/api/publication/1329287
ID  - 1329287
AB  - A procedure for the consistent application of digital terrain analysis methods to identify tectonic phenomena from geomorphology is developed and presented through two case studies. Based on the study of landforms related to faults, geomorphological characteristics are translated into mathematical and numerical algorithms. Topographic features represented by digital elevation models of the test areas were extracted, described and interpreted in terms of structural geology and geomorphology. Digital terrain modelling was carried out by means of the combined use of: (1) numerical differential geometry methods, (2) digital drainage network analysis, (3) digital geomorphometry, (4) digital image processing, (5) lineament extraction and analysis, (6) spatial and statistical analysis and (7) digital elevation model-specific digital methods, such as shaded relief models, digital cross-sections and 3D surface modelling. A sequential modelling scheme was developed and implemented to analyse two selected study sites, in Hungary and NW Greece on local and regional scales. Structural information from other sources, such as geological and geophysical maps, remotely sensed images and field observations were analysed with geographic information system techniques. Digital terrain analysis methods applied in the proposed way in this study could extract morphotectonic features from DEMs along known faults and they contributed to the tectonic interpretation of the study areas. (c) 2005 Elsevier B.V. All rights reserved.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Jordán, Győző
TI  - Morphometric analysis and tectonic interpretation of digital terrain data: A case study
JF  - EARTH SURFACE PROCESSES AND LANDFORMS
J2  - EARTH SURF PROCESS LANDF
VL  - 28
PY  - 2003
IS  - 8
SP  - 807
EP  - 822
PG  - 16
SN  - 0197-9337
DO  - 10.1002/esp.469
UR  - https://m2.mtmt.hu/api/publication/1329290
ID  - 1329290
AB  - Tectonic movement along faults is often reflected by characteristic geomorphological features such as linear valleys, ridgelines and slope-breaks, steep slopes of uniforin aspect, regional anisotropy and tilt of terrain. Analysis of digital elevation models, by means of numerical geomorphology, provides a means of recognizing fractures and characterizing the tectonics of an area in a quantitative way. The objective of this study is to investigate the use of numerical geomorphometric methods for tectonic,geomorphology through a case study. The methodology is based on general geomorphometry. In this study, the basic geometric attributes (elevation, slope, aspect and curvatures) are complemented with the automatic extraction of ridge and valley lines and surface specific points. Evans' univariate and bivariate methodology of general geomorphometry is extended with texture (spatial) analysis methods, such as trend, autocorrelation, spectral, and network analysis. Terrain modelling is implemented with the integrated use of: (1) numerical differential geometry; (2) digital drainage network analysis; (3) digital image processing; and (4) statistical and geostatistical analysis. Application of digital drainage network analysis is emphasized. A simple shear model with principal displacement zone with an NE-SW orientation can account for most of the the morphotectonic features found in the basin by geological and digital tectonic geomorphology analyses. Copyright (C) 2003 John Wiley Sons. Ltd.
LA  - English
DB  - MTMT
ER  -