جيومورفولوجية حوض وادي الطريفاوي == Geomorphology Of The Wadi Al - Trephaoy Basin
Author name:
وفاء مازن عبد الله
Supervisor name:
اسحق صالح العكام
General topic:
Geography
Specific topic:
Geography
Degree:
Master
University:
University of Baghdad
Language:
Arabic
University location:
Baghdad
First pages:
10T1590 - p.pdf
Abstract:
This study dears geomorphology & Trifaoui Valley Basin which is located within the provinces ( Karbala , Anbar , Najaf ) , which is of the internal drainage dry water basins , an area of ( 6411 ) km 2 , and its length ( 177.8 ) km.The thesis focused on the analysis of natural geographical component of the study area , and displaying their role in the formation of the manifestations of the ground, as well as morphometric characteristics of the network drainage, where the the basin is divided to six secondary basins : the area of the first basin is (1) ( 3888 km 2) the second (2) toward ( 414.2 km 2 ) and Third (3) was ( 671.8 km2 ) and The Fourth (4) (about 776.3 km2) and The Fifth (5) (about 299.2 km2) and The sixth (6) (about 361.5km2).And through the study of morphometric tectonic characteristics, the final classification of the tectonic indicators , falling within the tectonic value, reached (2.5 - 2), which is like the moderate tectonic activities and this applies to the study area. And through the study of geometric properties, it turns out that the average rate of rotation of Wadi Trifaoui was (0.30). rotation values have arised can be considered a moderate value in terms of slalom water division and this does not mean that these docks are close to the circular shape. The percentage elongation of basins is (0.55). This means that pans away from the circular shape, which leaves its impact on the configuration of landforms in these basins. As for Terrain characteristics, it became clear that the relative terrain average of basin is ( 0.81 ) making , a low value is indicated by the large area of the pelvic, while the value of ruggedness reached to ( 0.38 ) This shows the lack of basin Relief , the nature of the rock the study area intense the reduction of the steepness degree.The torrents threaten the study area as it has been classified into three types of risk, namely : low - risk pools as pools did not appear in within this level of risk, and medium risk basins include the pelvis (1) , high - risk pools include basins : ( 2,3,4,5,6 ). The study also included the risk & the sandy crawl areas and their presence during the two periods of time (from 1985 to 2013) where the percentage of sand dunes for the year (1985) about (10.1%), and for the year (2013) is (10.9%), the study concluded that the proposal of the model illustrates the danger of these characteristics with the help of GIS technology characteristics, it has been classified according to the study area into three severity levels of dangerous geomorphological, a low - risk & medium risk areas and hazardous areas of zones. It was found that lowrisk areas occupy (4.66%), medium - risk areas and occupy the highest percentage among the areas of (60.64%), followed by hazardous areas (34.68%), from the space of the study area which is (6411 km2).
