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جيومورفولوجية حوض وادي الركاش == Geomorphology Of The Wadi Al - Rkash Basin
Author name:
بشرى خليل داخل حسن الشمري
Supervisor name:
هالة محمد عبد الرحمن
General topic:
Geography
Specific topic:
Natural Geography
Degree:
Master
University:
University of Baghdad
Language:
Arabic
University location:
Baghdad
First pages:
10T1507 - p.pdf
Abstract:
تهدف الدراسة الى الكشف عن الخصائص الطبيعية في حوض وادي الركاش والعمليات الجيومورفولوجية السائدة فيه والتعرف على اهم الاشكال الارضية الناتجة عنها وعلاقة هذه الاشكال بوجود الموارد الاقتصادية في المنطقة وامكانية استثمارها.يعد وادي الركاش احد الاودية الموسمي | The study aims at revealing the natural characteristics of the basin of Alrakash Valley and the prevailing geomorphological processes in the basin, as well as identifying the resulting earthly forms with the existence of the economic resources in the area and the possibilities for investment. Alrakash is one of the seasonal Valleys whose water is expensed inside the Western Hills, when its high resources starts from the south Eastern parts of Al Anbar province, heading towards the north east until it meets Tefrawi and Wadi Al Salam Valleys to the right by the salty Valley of Jeffir. Then all forms one valley ends with the Al Razaza Lake in Karbala province. Through studying the geological structure, the valley proved to contain deposits the third and the fourth east, in addition to the existence of cracks and (69) liner structures the affects the stream of valley and its secondary branches. The topographic study revealed that the basin lies in the lower valley area and it was divided into five height categories that may affect the general decline of the area, represented towards north east, which is divided to five decline categories. The old climate left its traces on the formation of the geomorphological visages in the basin, as well as the role of the current climate. The study reveals the characteristics of the mixed gypsum desert soil by taking four samples with structures scope of about very rough to medium smooth with a little organic content, reflecting the density of the natural plant of the area. The number of wells is (21) with variable suitability for usage according to physiological and chemical characteristics. The vegetation coverage is featured for its shortage and variety. represented by being seasonal and perennials. The morphometric characteristics reveal an area of (455) km2, a length of (55.7) km, a width of (8.17), and a perimeter of (174.4) km. this is divided into five sub basin is of (230.6) km2 area, that forms a ratio of (50.7 %) of the total area basin, getting closer to the shape of a triangle. It was the shape coefficient (0.144), The ratio of its circulation is (0.187) and its elongation is (0.432). the basin passes through aging phase throughout its life cycle, when its Hypsometer variable is of (16.765 %), additionally the basin reveals that it is in the sixth stage with a Bifurcation ration of (33.4) and a curve factor of (1.170). The earthly forms resulted from the geomorphological processes varied and categorized according to their seven forms, represented by the structural - even ground forms, the erosion ground forms, the deposit ground forms, the carsick ground forms, the ground forms resulted from the motion of the material, the evaporating ground forms, in addition to the forms resulted from the work of the living creatures. The ground basin is also categorized according to Unsupervised Classification into three ground unites, represented by the water deposit unit, the water erosion flat ground unit and the poor ground unit, accordingly the relationship between the form of the surface, the natural resources is evaluated, in addition to the human activities in the area
