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İstanbul Teknik Üniversitesi (2007)

Multitemporal Change Detection On The Salt Lake And Surroundings By Integrating Remote Sensing And Geographic Information Systems

EKERCIN Y. Müh. Semih

Titre : Multitemporal Change Detection On The Salt Lake And Surroundings By Integrating Remote Sensing And Geographic Information Systems

Uzaktan Algılama Ve Coğrafi Bilgi Sistemleri Entegrasyonu İle Tuz Gölü Ve Yakın Çevresinin Zamana Bağlı Değişim Analizi

Auteur : EKERCIN Y. Müh. Semih

Université de soutenance : İstanbul Teknik Üniversitesi

Grade : Doctor of Philosophy (PhD) 2007

Résumé
In this study, the Salt Lake and its vicinity is examined by integrating remote sensing and geographic information systems. In the first stage including technical analysis, a new model is developed for prediction of soil salinity using satellite image data and the model is validated by using real-time ground data. In the following stage, annual temperature and precipitation changes occurred in the Salt Lake Basin between 1970 and 2005 are determined by using climatic data. Taking account this results, the effects of climate change to the Salt Lake in terms of water and salt reserve are investigated by using multitemporal satellite image data. The results obtained through multitemporal satellite data and real-time ground surveys indicate that the Salt Lake could be faced with drying in the next few decades. In addition, it is detected that the amount of salt formation along the west coasts of the lake has decreased and desertification has started in the region due to drought impact. In the last stage of the study, point and non-point pollutant sources are determined and the resulting graphic and non-graphic data are analyzed together by combining in a database. The results obtained by examining ground observations, satellite images and real-time in-situ measurements show that the Salt Lake and its vicinity has been polluted by agricultural, industrial and domestic wastewaters and the region urgently needs to be controlled by constructing new biological and chemical purification units.

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