Evolution of neotectonic activity of East Anatolian Fault System (EAFS) in Bingol pull-apart basin, based on fractal dimension and morphometric indices

Sarp G.

JOURNAL OF ASIAN EARTH SCIENCES, vol.88, pp.168-177, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 88
  • Publication Date: 2014
  • Doi Number: 10.1016/j.jseaes.2014.03.018
  • Journal Name: JOURNAL OF ASIAN EARTH SCIENCES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.168-177
  • Keywords: Morphometric indices, Fractal analysis, Moran's I, Bingol basin, East Anatolian Fault System, SOUTHEASTERN TURKEY, WESTERN SECTION, SPATIAL-ANALYSIS, STREAM POWER, SE TURKEY, ZONE, REGION, INDIA, SEISMICITY, PLATE
  • Süleyman Demirel University Affiliated: Yes

Abstract

This study is an attempt of a semi-automatic geomorphological GIS analysis based on morphometric indices. In the-study, 10-m-resolution Digital Elevation Models (DEMs) are used to assess the neotectonic signals regarding the recent topographic developments and to attach additional significance to active tectonics in the Bingo! basin area. The methodology incorporates the determination of the structural similarities of the faults in the basins using fractal concepts and the application of four morphometric indices (Stream Power Index (SP), Multi-resolution Index of Valley Bottom Flatness (MRVBF), Terrain Ruggedness Index (TRI) and Valley Width-to-Height Ratio (Vf)). In order to detect the deviation from spatial randomness of the applied indices, the weighted correlation coefficient Moran's I is used and the results are interpreted at a confidence interval of 99%. The spatial distribution of integrated index values is evaluated with the tectonically active fault zones in order to determine the probable activity and the structural deformation in the basin.