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DETERMINATION AND CHARACTERISATION OF FAULT SYSTEMS AND
GEOMORPHOLOGICAL FEATURES BY RS AND GIS TECHNIQUES IN THE WSW
PART OF TURKEY
A. Unal Akman * * and Kenan Tüfekçi *
"MTA, Geology Dept., RSC, 06520 Balgat, Ankara, Turkey - (akman, kenant)@mta.gov.tr
KEY WORDS: Remote Sensing, Geology, Geomorphology, Western Anatolia Earthquakes, DEM/DTM Applications, Lineament
Interpretation, Anaglyph Image Method, Ground -
ABSTRACT:
Truth Observations.
This article is aimed to give the first results of the project studying the faults and tectonic style of the southwestern part of Turkey
based on remote sensing techniques. LANDSAT-TM and ASTER satellite data have been used in visual interpretation. The several
techniques based on DEM have been applying to interpret in the determining of the tectonic features. The anaglyph image produced
from LANDSAT-TM and DEM data has been found as the most suitable method in the visual interpretation of the structural
elements. The results are being checked by the ground-truth studies. It is possible identify clearly the effects of the extensional
tectonic on the satellite images by visual interpretations based on knowledge. The faults of the neotectonic period of the region can
be distinguished clearly, and it is perceived that the motion to the SW direction in general forms the active tectonics in the region.
1. INTRODUCTION
The study area is located in the western part of Anatolia lying
between the 38° - 40° N latitudes and 26° - 30° E longitudes
(Figure 1). The area is covered approximately by three
LANDSAT-TM images that have path 181 / raw 033, path
180 / raw 033 and path 179 / raw 033 numbers. There are 14
Aster images available in western and castern sides however
the central part contains the cloudy images. DEM image was
produced by the contour maps of The General Command of
Mapping in scale 1:250 000 (100 m contour interval).
DEM applications are considered to carry out on the DEM
data that have resolution 10 to 30 m contour interval. It is
possible to produce DEM from ASTER data that may be
possible to get approximately 30 m contour interval. Mainly
ERDAS-IMAGINE 8.5, ARC-GIS 8.2, ARC-INFO 7.2
software, and partly PCI-GEOMATICA 8.1.2, TNT 6.6 and
ENVI 3.5 software have been using. The data having the
location, date and magnitude of the earthquakes happened in the
region was downloaded from the Kandilli Observatory web site
and processed to suit the aim of the study.
The superiority of the satellite data according to the aerial
photographs to study geology and geomorphology of extensive
areas has been accepted by the most of the researchers. Rapid
incregsing of satellite data, development of hardware, software
vehicles and new image processing techniques therefore,
become easy to use these techniques for usual researchers, and
of course, lowering the prices have been getting some new
opportunities in investigations and studies in earth sciences.
GIS techniques have been getting more capability in integration
and interpretation of the data provided from several branches of
knowledge on different formats.
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