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University of Twente (2013)

Earth observation for quantifying ecohydrological fluxes & interrelations : a regional case : the Konya Closed Basin, Turkey

Gökmen Mustafa

Titre : Earth observation for quantifying ecohydrological fluxes & interrelations : a regional case : the Konya Closed Basin, Turkey

Auteur : Gökmen Mustafa

Etablissement de soutenance : University of Twente

Grade : Doctor University of Twente 2013

Descriptif
Disproportional water demands and use in semi-arid regions cause serious ecological and environmental consequences such as degradation of natural vegetation and draining of wetlands, desertification, depletion of groundwater resources, soil erosion and salinization. This figure keeps worsening globally in the semi-arid regions considering the increasing population and the related demand on water by human activities. The main objective of this research study is to effectively utilize earth observation methods to quantify the hydrological and energy fluxes and eco-environmental variables in the semi-arid Konya closed basin spatio-temporally and with good accuracy. It is further aimed to develop a methodology integrating remote sensing, field techniques and modelling to quantitatively analyze the spatio-temporal relations among water, energy and eco-environmental variables at regional and local scale. The research questions under consideration are:Can we utilize RS methods for accurately quantifying hydrological fluxes spatio-temporally to support closing the water balance of the semi-arid closed basin ? And can we validate and improve the accuracy of the fluxes using field techniques such as Bowen Ratio Energy Balance (BREB) ? Integrating RS, field and time series methods effectively, can we reveal the inter-relations among hydrology, energy and environmental variables quantitatively to understand feedback mechanisms at the regional and local scale ? Can we utilize RS and time series approaches effectively for improving the understanding of controlling mechanisms regarding the available water in Lake Beysehir upstream catchment ? Can we develop a method integrating RS, field and modeling approaches to effectively estimate the ecological water demand of the downstream ?

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