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Seventh sector is located on the right bank of the Euphrates River at the town of Abu- Kamal, the Syrian-Iraq border, and its square 18140 hectares. Invest most heavily sector too, where crops depend on irrigation, irrigation networks mediated cons isting of earthen trenches, canals and to pump water by pumps on the banks of the Euphrates. Research aims to assess the pedelogical properties of agricultural soils by using laboratory and field tests: leaching speed, permeability, density, porosity, water field capacity, natural humidity (hygroscopic– wilt limit), so as to contribute in choosing optimal modalities for irrigation and drainage, and rehabilitation Land affected by salinity and exited the investment. The soils of the sector are clay, clayey sand, fine sand, and it has low permeability, low water field capacity because of sedimentary origin, and the total porosity is low in the upper part of subsurface soil because of its impaction. There is a relationship between hygroscopic moisture of soils and its structural composition. The search recommend to agriculture Fabaceae crops with different roots deep to help improve soil building, and need to use spray irrigation method to control the water quantity and wetting depth.
In area of Elward east located in Euphrates Graben, 2D and 3D Seismic data were used to reveal subsurface geological structures, especially Reservoir Rutbah Formation dated as Lower Cretaceous and to explore hydrocarbon traps of this Formation. And to discover new drillable locations by integrating geological and seismic data and using seismic attribute techniques such as Dip and coherency.
Sector No. 5 is located on the right side of Euphrates River, Southeast of ALMyadeen City. Many lands there are not suitable for agricultural uses, because of the saline soils. This research aimed to evaluate the system of the unconfined groundwate r resources, by adopting the measurement results in 40 piezometers, drilled in aquifer of quaternary deposits which consist of loam, gravel, and sandy gravel, underneath which are impervious Neogene deposits. The annual changes of groundwater levels of quaternary aquifer were 1-3 meters, due to rain and irrigation water leaking. The groundwater table is shallow (less than 2.5 m), because of the excessive irrigation, which gives an urgent necessity to construct effective drain network to reduce groundwater levels. Groundwater salinity reaches 29 gr/liter, and concentrations of the chloride and sulphate are 11 gr/liter, 3,5 gr/liter in some locations, because of the natural and artificial situations. Therefore, this groundwater is not suitable for domestic, or agricultural purposes in most areas of the region.
The goal of this study is to compare three bony structures in order to choose the best method for the age determination of Chondrostoma regium inhabiting the Tishreen Reservior (Euphrates River). So, 214 individuals were collected between 15/7/2011 a nd 15/5/2012 using appropriate gill nets. Scales, vertebrae and operculum were independently used by two readers to estimate the age. Mean ages were estimated for each bony structure-reader combination and the precision of age estimated from multiple readings was evaluated. Furthermore, the error of ageing was calculated. The results showed that the fish ages were varied between (2-6), (3-6) and (2-5) years- judged by scales, vertebrae and operculum respectively. Results also showed that vertebrae were the most reliable bony structure for estimating the ages of Chondrostoma regium as they had the highest agreement and the lowest ageing error.
The correct study of the reservoir leads us to develop drilling programs suitable for producing stratum. In addition, this makes us do successful operations to achieve the best recover factor ,within the convenient time and at the lowest appropri ate cost. This study will help us to avoid or solve many of the problems associated with the production processes and the most important problem of rehydration .In this research I did a geological and reservoir study of the Jido Field which is one of the fields of the Euphrates Company and it is located within the area of graben Euphrates in Deir Azure to the east of Syria, where recoverable reserves which are estimated in this field is about 83 million barrels. The objective of the study was to know the specifications and behavior of the reservoir and fluid inside and the possibility of a Hydrodynamic connection between blocks ,where this information is taken into account when calculating recoverable reserves and the assign of technological indicators for investment.
The third sector of lower Euphrates basin has a great economic importance, but some lands have gone out of service because of salinization due to the rise of groundwater levels. Thus, it is very important to solve the ground water issue using new s cientific techniques. This research aims to solve the drainage problem in the third sector using a scenario based on a mathematical model, the results of which allow us design a proper drainage network comprised of 111 wells scattered all over the study area, with a total abstraction of 269000 m3/day. This will lower the groundwater level, dry the swamps, and decrease the soil salinity, ensuring a sustainable economic exploitation of agricultural lands.
The purpose of this study was to determine the best method for age estimation by comparing scales, vertebrae and operculum of Acanthobrama marmid inhabiting the Tishreen Reservoir (Euphrates River). An overall of 194 specimens of Acanthobrama marmid were collected between 15/7/2011 and 15/5/2012 using appropriate gill nets. Each bony structure was examined independently by two readers without referring to any information except for the date of capture. The precision of the readers was estimated and ageing error was determined by analysis of variation. Our results showed that vertebrae were determined to be the best reliable bony structure for ageing Acanthobrama marmid because of them having the highest precision and the lowest ageing error.
The provision of adequate drainage and the accompanying problem of accumulation of salt in soil have plagued irrigated agriculture for centuries. Soil salinity is one of the major problems in arid and semi-arid zones. In Euphrates valley the high groundwater level and its high evaporation rate caused a serious salinity problem. This study was aimed to allocate the dangerous areas in terms of high water level resulted from the recent and expected activities. Drainage wells will be drilled at these areas in order to lower the groundwater level and prevent further soil salinity.
This experiment was conducted during ١٩٩٦-١٩٩٨ to ivestigate study the effect of using different types of irrigation water on some soil properties and its cotton, corn and wheat productivity under the agroclimatic conditions of Deir Ezzor.
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