000			03011cam a2200337 a 4500
003			EG-GiCUC
005			20250223031604.0
008			161026s2016 ua dhb f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aPh.D
099			_aCai01.12.15.Ph.D.2016.He.E
100	0		_aHend Saeed Taha Soliman Abusalem
245	1	0	_aEnvironmental hydrogeochemical study of Wadi Elraiyan lakes, Faiyum, Egypt / _cHend Saeed Taha Soliman Abusalem ; Supervised Ahmed Mohamed Abdelaziz Elkammar , Essam Abdelrahman Mohamed
246	1	5	_aدراسة بيئية هيدروجيوكيميائية لبحيرات وادى الريان - الفيوم - مصر
260			_aCairo : _bHend Saeed Taha Soliman Abusalem , _c2016
300			_a166 P. : _bcharts , facsimiles , maps ; _c25cm
502			_aThesis (Ph.D.) - Cairo University - Faculty of Science - Department of Geology
520			_aWadi El Raiyan as a great depression in the Faiyum Governorate has been utilized for wastewater storage since 1973. The depression contains two artificial lakes (Upper and Lower) connected together through a narrow channel. The widespread of pollution in the drainage water with the shrinkage in the lower lake's size poses a possible hazard to the aquatic and wildlife systems. Chemical analysis (major and trace elements), and microbiological analyses were made. The extensive evaporation of water augments the salt content, heavy metals, pesticides and other pollutants in Wadi El Raiyan Lakes. An evaporation model was applied on the input sources to the two Wadi El Raiyan lakes to expect the main factors controlling the geochemical composition of lakes{u2019} water. Change detection technique was used to identify and to map the major land cover types as well as to quantify the magnitude; rates and nature of the land cover changes. In the cultivated land drainage, the major-ion chemistry is generally influenced by chemical weathering of rocks and minerals with anthropogenic inputs. In the depression lakes, the water chemistry generally exhibits an evaporation-dependent evolutionary trend that is further modified by cation exchange and precipitation of carbonate minerals. The lower lake lost about 50% of its area between 2001 and 2014. Two scenarios may be expected for the hazardous effects on the lower lake. The first one is maintaining the same rate of deterioration until complete dryness of the lower lake in few years, while the second one could be anticipated if action plans were enforced by the government to increase the recharge of the lower lake once again
530			_aIssued also as CD
653		4	_aGeochemistry
653		4	_aMajor elements
653		4	_aSurface water
700	0		_aAhmed Mohamed Abdelaziz Elkammar , _eSupervisor
700	0		_aEssam Abdelrahman Mohamed , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aNazla _eRevisor
905			_aSoheir _eCataloger
942			_2ddc _cTH
999			_c58313 _d58313