In this study we test the Landsat 8 OLI data potential for lithological mapping in the Southeastern Pamir. Discrimination of lithological units in the study area has been carried out by utilizing Landsat 8 OLI Satellite data and image... more
In this study we test the Landsat 8 OLI data potential for lithological mapping in the Southeastern Pamir. Discrimination of lithological units in the study area has been carried out by utilizing Landsat 8 OLI Satellite data and image enhancement techniques. The approaches consist of spectral enhancement such as independent component analysis (ICA), band ratioing, and false-color composition (FCC). The spectral enhancement techniques were applied in order to extract the initial lithological information, which shows a clear discrimination of granitic rocks from terrigenous and carbonate sedimentary successions. FCC image (OLI bands 6, 7 and 5), color-ratio composite image (OLI 6/5, OLI (7x5)/7, and OLI 6/7), and color composite of independent components (IC6, IC3, IC4) in red, green and blue respectively were found as combinations with more contrast on lithologic information and were used as the input data in supervised classification. Maximum likelihood classification was used to classify resultant images. The results, verified with field observations, demonstrate that different kind of granitoids, terrigenous and carbonaceous rocks can be distinguished and delineated, leading to constriction of geological maps with a better accuracy.
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Research Interests:
Despite the ecological importance of forest tree species, our study was motivated by scarce data on dendrochronology studies limited to the northwestern part of Tajikistan due to lack of access to such a part of the country which is... more
Despite the ecological importance of forest tree species, our study was motivated by scarce data on dendrochronology studies limited to the northwestern part of Tajikistan due to lack of access to such a part of the country which is difficult to access. Current studies on Junipers in the northwestern part of Tajikistan identified that tree ring-based climate reconstruction is possible. Cores of Juniperus Turkestanica from Taboshar area, Sogd province were developed into 176-year tree-ring width chronology. In the current study a summer (June-September) minimum temperature reconstruction spanning AD…
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The Pamir and Hindu Kush are examples of a puzzling collision system where a complex junction of colliding lithospheric plates coexist with intermediate depth seismicity at 300 km. In this study, we constructed a new tomography model... more
The Pamir and Hindu Kush are examples of a puzzling collision system where a complex junction of colliding lithospheric plates coexist with intermediate depth seismicity at 300 km. In this study, we constructed a new tomography model using travel time data from local events recorded by the TIPAGE (Tien Shan-Pamir Geodynamic program) network. In addition to the P- and S-wave velocities down to 200 km, we derived the azimuthal anisotropy. The velocity anomalies were consistent with the results of previous studies. In the crust, the velocity structure and anisotropy directions were mainly oriented along major suture zones. At depths of 80-120 km, a narrow low-velocity anomaly coinciding with the distribution of deep seismicity was interpreted as a trace of entrained crustal material by the dipping lithosphere. The anisotropy directions at these depths were mainly oriented NW-SE and were interpreted as indicating the direction of the motion of colliding plates. The difference in the mag...