جيومورفولوجية حوض وادي العاصين في الهضبة الغربية لمحافظة النجف الأشرف وإمكانات استثماره

الباحث

نور رزاق عبد الكاظم الحدراوي

المشرف

عايد جاسم حسين الزاملي

الجامعة

جامعة الكوفة

الكلية / القسم

الآداب / الجغرافية

الشهادة

ماجستير

السنة

2022

لغة الرسالة

عربي

الكلمات المفتاحية

الجيومورفولوجيا;حوض وادي العاصين;الهضبة الغربية;النجف الأشرف

The study aims to study the geomorphological characteristics of the Wadi Al-Aasin Basin in the western plateau of Al-Najaf Al-Ashraf governorate and its investment possibilities. As the basin is located within the western plateau of Al-Najaf governorate, with an area of 334 km2, between latitudes ( 30ً 18َ ْ– 00ً 37َ 31ْ ) to the North and longitudes ( 00ً 09َ ْ– 30ً 30َ 44ْ ) to the East Wadi Al-Aasin Basin is located within the structural divisions of Iraq, specifically within the stable pavement in the belts: Al- Najaf / Abu Al-Jir and the Salman Al-Abaydh, in which formations spread from the (Eocene) to (Miocene) era. Its surface is distinguished with flatness and low slopping; its slope is (3.5 m/km). The study area is located within the arid climate that is characterized by an increasing temperature, which amounts (25°), and the total annual rainfall amounted to (94.4 m) with relative humidity amounted to (42%), northwest winds at an annual rate (1.8 m/s), which has an impact on the occurrence of geomorphological features in the region such as weathering and erosion processes. The study area is located within the Dammam and Euphrates reservoir and contains one water well in the north of the study area, as the values of salinity concentrations and other chemical elements exceed the internationally permissible limit, according to the World Health Organization (W.H.O), which is thus not suitable for human drinking and irrigation, but it is suitable for drinking animals and livestock. The study dealt with the analysis of the morphometric characteristics of the valley network, and it was found that the basin consists of 5 river levels, all of which flow into a main valley to form Wadi Al-Aasin, which contains secondary basins that vary in their area and ranks. The results of the morphological characteristics indicated that the basin tends to elongate more b than to rotate. Studying and analyzing the geomorphic map clarify that there is a diversity in landforms such as crusting, weathering holes, rock encroachment, mass disintegration, water erosion processes and landforms resulting from surface water action such as folds, rocky cliffs, houses, cliffs feet, and the landforms resulting from water sedimentation represented by the sediments of valley bottoms and floods, the work of the underground water and the land forms resulting from it, such as the marsh, desert varnish and gypsum crust, and wind processes and the forms resulting from them, such as stone plains, desert sidewalks and wind holes, and the earth forms resulting from wind precipitation such as sand hills, sandbanks and ripple marks (Neem). Considering the basin resources, the study found that it is possible to invest and develop the valley basin through water harvesting, as the study is addressing the water scarcity in the region by constructing dams and reservoirs and following the process of industrial injection, as it has become necessary to develop transportation methods and improve human settlements and agricultural activity.

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البريد الإلكتروني

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