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Sinasi Kaya Dursun Z. Seker Sedat Kabdasli Nebiye Musaoglu Akira Yuasa Madhusudan B. Shrestha 《水文研究》2006,20(11):2429-2440
Remotely sensed data may provide easy access for monitoring the spatial separation and obtaining the hydrodynamic characteristics of turbid freshwater plumes created by river flow in the marine environment. Traditional methods are time consuming and require great effort to produce sufficient data. In this project, integrated research has been carried out on a river to demonstrate the utility of remote sensing (RS) technology for studying fundamental theoretical properties of turbulent mixtures. The Filyos River mouth, located on the Black Sea coast of Turkey, is the research area. Flow properties, such as the horizontal dispersion coefficient, have been calculated (using Landsat TM sensor images taken on two different dates). The effects of the plume on the morphology of neighbouring beaches are also examined. This study shows the utility of RS technology for generating quantitative data and better defining the hydraulic behaviour of a river with high turbidity. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
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The most significant morphological property of a river is the meandering process, which is dominated and governed by hydraulic, hydrologic and topographic characteristics of the river and its drainage area. It is possible to obtain reliable data on river morphology in the long term by using remotely sensed data. In this study the Filyos River, located at the Western Black Sea region of Turkey, has been selected as the study area to show the capabilities of remote sensing technology and to define the appropriate techniques for achieving the most reliable information on the river morphology by monitoring the meandering processes. The findings of the study indicate that remotely sensed data can be used successfully in defining some basic characteristics of the meandering process on rivers. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献
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Gündüz Horasan Aysun Boztepe Güney Ayşegül Küsmezer Feyza Bekler Zafer Öğütçü Nebiye Musaoğlu 《Journal of Asian Earth Sciences》2009,34(1):90-99
Scientists have proposed two fault systems of different ages in the Sea of Marmara: the Thrace-Eski?ehir Fault Zone of Early Miocene–Early Pliocene age and the North Anatolian Fault Zone of Late Pliocene–Recent age. Different seismicity rates and extensions of these faults onto land near ?stanbul have been suggested. One of the reasons for these differences is the contamination of seismicity catalogs by seismic events from quarries operated in ?stanbul and its vicinity, including Gaziosmanpa?a (Cebeci and Kemerburgaz), Çatalca, Ömerli, Gebze, and Hereke.In this study, we investigated waveforms of 179 seismic events (1.8 < Md < 3.0) from the KOERI, NEMC digital database. We determined differences between earthquakes and quarry blasts based on time- and frequency-domain analyses of their seismograms (amplitude peak ratio, power ratio, and spectral amplitude ratio) and used these differences as discriminants. The results of this study indicate that 15% and 85% of the investigated seismic events are earthquakes and quarry blasts, respectively. 相似文献
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Orkan Özcan Bodo Bookhagen Nebiye Musaoğlu 《Journal of the Indian Society of Remote Sensing》2018,46(3):471-481
In this study, the spatial and temporal impacts of the Atatürk Dam on agro-meteorological aspects of the Southeastern Anatolia region have been investigated. Change detection and environmental impacts due to water-reserve changes in Atatürk Dam Lake have been determined and evaluated using multi-temporal Landsat satellite imageries and meteorological datasets within a period of 1984–2011. These time series have been evaluated for three time periods. Dam construction period constitutes the first part of the study. Land cover/use changes especially on agricultural fields under the Atatürk Dam Lake and its vicinity have been identified between the periods of 1984–1992. The second period comprises the 10-year period after the completion of filling up the reservoir in 1992. At this period, Landsat and meteorological time-series analyses are examined to assess the impact of the Atatürk Dam Lake on selected irrigated agricultural areas. For the last 9-year period from 2002 to 2011, the relationships between seasonal water-reserve changes and irrigated plains under changing climatic factors primarily driving vegetation activity (monthly, seasonal, and annual fluctuations of rainfall rate, air temperature, humidity) on the watershed have been investigated using a 30-year meteorological time series. The results showed that approximately 368 km2 of agricultural fields have been affected because of inundation due to the Atatürk Dam Lake. However, irrigated agricultural fields have been increased by 56.3% of the total area (1552 of 2756 km2) on Harran Plain within the period of 1984–2011. 相似文献
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Mustafa Yanalak Elif Sertel Nebiye Musaoglu Cengizhan Ipbuker Sinasi Kaya 《Journal of the Indian Society of Remote Sensing》2011,39(2):135-146
Spatial mapping from space using high-resolution satellite sensor data instead of conventional data collection techniques
widely gained popularity. This study aims to analyze the planimetric and thematic accuracy of high-resolution OrbView-3 and
IKONOS orthoimages. OrbView-3 and IKONOS images of a test area were acquired and these images were geometrically corrected
using rational polynomial functions to conduct accuracy assessment. 40 Ground Control Points (GCPs) generated from static
Global Positioning System (GPS) survey were used in the orthorectification procedure. 182 Test Points (TPs) produced from
terrestrial surveying technique were used to analyze the accuracy of orthorectifications. Root Mean Square Error (RMSE) values
obtained for GCPs and TPs were used to determine the planimetric accuracy of these images. Thematic accuracy analyses were
conducted in radiometric and spatial base. Transects, lines and polygons were created to analyze the radiometric quality of
data sets and to determine minimum distinguishable distance and distinguishable area. Both planimetric and thematic accuracy
analyses illustrated that OrbView-3 and IKONOS images could be used to create 1:10000 scale map of the concerned region with
appropriate planimetric and thematic quality. 相似文献
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