حوض وادي ورزان : دراسة في جغرفية الموارد المائية == Wadi W Arazan Basin A Study In The Geography Of Aquatic Resources
Author name:
جلال عبده ابراهيم عثمان
Supervisor name:
سعود عبد العزيز عبد المحسن الشعبان الفضلي
General topic:
Geography
Specific topic:
Natural Geography
Degree:
Master
University:
University Of Basrah - College Of Literature - Department Of Geography
Language:
Arabic
University location:
Basrah
First pages:
10T1335 - p.pdf
Abstract:
This study is aimed to assist. The aquatic resources in Wadi Warazan Basin in the Republic of Yemen in order to estimate the water balance with regard to the natural resources and the way of usage in the different fields of activities.The importance of this study depends on the fact that wadi Warazan Basin which is (412)Km2 is one of the most fertile a agricultural areas, moreover area it is regarded to be a tourism area. The second thing is that the basin is more close to Taiz city which suffers at the present from water shortage.The final results of the study show that : 1 - The most rainy seasons are spring and summer especially, in some few days during the rain season. The most rainy month is August (14.8%) of the total rain while December is regarded to be the lesser rainy month (0.7%). The rainfall estimations during (44) years is about (346 - 875.8)mm. 2 - The annual aquatic in Wadi Warazan Basin ts about (241 349 600)m33 - The ground water runoff increases during autumn, because it occurs after the rain season, where there are many quantities of the ram underground. In contrast, other months of the year has less drainage.4 - The armual drainage which is (3492)m3 per hour varies in (193.6%) because of it's close relation with rainfall. 5 - The (165.59)mm out of the total annual rainfall is found to a wasted aquatic quantities as a result of evaporation.6 - The Absence of specific channels, which leads to increase the evaporation rate in the valley. In addition the pools which fonned at the sides of the valley represented a suitable environments for transfer various diseases such as Schistosomiasis (Belhars) and Malaria diseases. 7 - The deviation factor of Wadi Warazan shows the variation in the compactness of their rocks, so the evaporation rate of ground water runoff produced as a result of the expansion of the area exposed to the sun light.Moreover barriers and folts at the long side are an important factors for ground water recharge.8 - The present consumption of the ground water appears to be in the higher rocky aquatic layer and the volcanic aquatic rocky layer third layer (Tawila Sandstone) seems to be unconsumed because it's (600)m deep.9 - The ground water is affected by the increasing number of wells.10 - The aquatic basin net work appear to be having a high density of valleys number about (1.05)/Km2 which affects the surface flow that makes floods danger is probable.11 - It seems that the aquatic basin resources may become unable to met the increasing demand of the area and Taiz city as regarded to be an alternative to solve the city water supply problem. Moreover, the rising of the population in the basin.
