Systematic digital terrain model construction and model verification with multi-source field data. Morphotectonic analysis in the Villany hills and its surroundings, SW Hungary

Attila Petrik, G. Jordán

Research output: Contribution to journalArticle

Abstract

The objective of this study is presenting a systematic digital terrain modelling method and testing its capabilities on poorly defined thrust fault-related actively uplifting area. A further objective is to present a detailed verification of digital terrain modelling results using field observation of more than 1,000 structural field measurements, geophysical seismic sections and geological information. Finally, tectonic stress field models are compared to the terrain modelling results and relating digitally identified geomorphological features. Systematic digital terrain modelling proceeds from simple univariate analysis of elevation and its derivatives to the more complex bivariate stereonet analysis, digital drainage network analysis and to lineament pattern analysis. Morphotectonic lineaments identified on shaded relief map were used to compare them to the known tectonic lines in the study area. The combined usage of 200 digital morphologic cross-sections and slope-breaks on profile curvature maps were used to reveal the asymmetry of surface topography along the known tectonic lines. Linear valleys and ridge lines were defined as drainage and watershed lines by means of digital drainage network analysis. Results show that the orientation of the measured structural field data correlate to the orientation of the various observed morphological lineaments such as drainage elements. This study identified valley rotation and en-echelon arrangement of some morphological features in the study area, together with a major strike-slip fault delineating the southern boundary of the studied thrust zone, unknown before.

Original languageEnglish
Pages (from-to)207-224
Number of pages18
JournalCarpathian Journal of Earth and Environmental Sciences
Volume12
Issue number1
Publication statusPublished - 2017

Fingerprint

digital terrain model
lineament
drainage network
network analysis
tectonics
modeling
drainage
valley
geomorphological feature
thrust fault
strike-slip fault
stress field
curvature
asymmetry
relief
thrust
cross section
topography
watershed
analysis

Keywords

  • DEM analysis
  • Digital geomorphometry
  • Geological field verification
  • Image processing
  • Morphotectonics

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

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