Lineament analysis from satellite images, north-west of Ankara

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2005

Author

Sarp, Gülcan

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The purposes of this study are to extract lineaments from satellite images in order to contribute to the understanding of the faults. Landsat image is used for the analysis which is processed for both automated and manual extraction. During manual extraction four methods (filtering, PCA, band rationing and color composites) are used. Comparison of the two output maps indicated that manual extraction produced better results. Manually extracted lineament map is tested with the fault map of the area compiled from eight studies. The accuracy of the lineament map for the whole area is 38.69 % which increases to 50.28 % in the vicinity of North Anatolian Fault Zone (NAFZ). Evaluation of the length, density and orientation of the lineaments indicated that: a) there are fault zones in the area other than the NAFZ, b) Several fault segments are identified in the region which are absent in the fault map due the difficulty in mapping during the field studies; c) the dominant lineament trend is NE-SW (parallel to the NAFZ), however, a second trend is obvious in NW-SE direction.

Subject Keywords

Geology.

URI

http://etd.lib.metu.edu.tr/upload/12606520/index.pdf
https://hdl.handle.net/11511/15412

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

G. Sarp, “Lineament analysis from satellite images, north-west of Ankara,” M.S. - Master of Science, Middle East Technical University, 2005.