TY  - JOUR
TT  - LINEAMENT DETECTION FROM GRAVITY ANOMALY MAPS WITH THE GRADIENT HOUGH ALGORITHM IN ADAPAZARI BASIN
AU  - Aydogan, Davut
PY  - 2013
DA  - July
JF  - İstanbul Yerbilimleri Dergisi
PB  - İstanbul Üniversitesi
WT  - DergiPark
SN  - 1012-3741
SP  - 25
EP  - 35
VL  - 26
IS  - 1
LA  - en
KW  - Hough transform
KW  - boundary analysis
N2  - As indicators of certain significant geological structural elements, linear anomalies are important in interpretinggravity and magnetic anomalies. Lineaments are usually mapped by using improved data. Numerous algorithmshave been developed to automatize this process. This paper presents an integrated study of the Adapazari basin bytaking into consideration a set of gravity data and surface geology. Subsurface geological modeling is performed byHough transform (HT) based on gradient calculations as an image enhancement technique and an interpretation ofthe gravity values including boundary analysis algorithms. Application of the gravity method to structural geologyhelps shedding light on the local changes in the gravity gradient zones caused by density differences pertaining tocrustal structure and composition. Anomalies occurring in gradient zones are commonly expressed as potential-fieldlineaments. The methods proposed to detect these discontinuities and boundaries corresponding to differences aretested on synthetic data as the initial stage and the results obtained are satisfactory. As the second stage, they areapplied to the gravity anomaly map of the Adapazari basin and possible lineaments are automatically obtained. Inaddition to provide supportive data, sediment thickness in the region is computed by using 3DINVER matlab program.Automatic analysis results are compared to the major and minor faults depicted in the geological map of the studyarea. The results demonstrate that automatic lineament detection depicts more fault traces than visual interpretation.By combining the lineaments obtained with geological and supportive data, we try to introduce a new approach totectonic development for the study area.These examples demonstrate that in detecting the geological features defined as major and minor faults, the Houghalgorithm can be used for qualitative interpretation of gravity anomaly maps.
CR  - Zeng, H. Zhang, Q., and Liu, J., 1994, Location
of secondary faults from cross-correlation of
the second vertical derivative of gravity anomalies,
Geophysical Prospecting 42, 841-854.
UR  - https://dergipark.org.tr/tr/pub/iuyerbilim/issue//592979
L1  - https://dergipark.org.tr/tr/download/article-file/763599
ER  -