تختلف الطبقات المائية المشققة و الكارستية عن الطبقات المائية المسامية بعدم تجانس خواصها
الهيدروليكية بسبب التفاوت الكبير في الخواص الرشحية لصخورها، لهذا لابد من أخذ هذا الاختلاف
بالحسبان عند تقدير قيمة تغذية المياه الجوفية لها.
في هذا البحث نُوقشت ظروف تغذية المياه الجوفية في مناطق الشير منصور و الحرمون من سلسلة
جبال لبنان الشرقية حيث تنتشر الطبقات المائية المشققة-الكارستية بتطبيق طريقتي الميزان المائي و تغير منسوب المياه الجوفية. عند تطبيق الطريقة الأولى –الميزان المائي - قسمت المنطقة إلى قطاعات مائية سطحية و حسبت مركبات هذا الميزان المختلفة في كل قطاع على حدة و قدرت نسبة تغذية المياه الجوفية 2006 . عند تطبيق - من الهطول المطري في المنطقة ككل، فكانت 55.8 % في الأعوام الجافة مثل 2005 طريقة تغير منسوب المياه الجوفية قسمت المنطقة إلى قطاعات مائية جوفية، و حسبت قيم تغيرات المنسوب و المعطائية المائية و تغيرات المخزون المائي الجوفي، و قُدرتْ نسبة تغذية المياه الجوفية من الهطول المطري فراوحت بين 17.6 % في الحرمون و 80 % في الشير منصور، و قد أوضحت النتائج تفاوت تلك النسب بين القطاعات من جهة و بينها و بين ما تم التوصل إليه بنتيجة الحساب بطريقة الميزان المائي.
When estimating groundwater recharge in karstified and fractured aquifers
it’s important to take into consideration, that they differ from porous aquifers
by inhomogeneities of their hydraulic properties because of the great variance
of infiltration properties in their rocks. In this research the process of
groundwater recharge in Sher-mansour and Haramon areas in Antilebanon,
where karstified and fractured aquifers are developed, was discussed. The
portion of rainfall reaching the groundwater was calculated by applying water
balance and groundwater level changes methods. In the first method the area
was divided into surface zones and water balance components were calculated
in each zone and the portion was estimated at 55.8% of rainfall in dry years
like 2005-2006. In the second method the area was divided into subsurface
zones and groundwater level fluctuations, storage coefficient and groundwater
storage were calculated. The groundwater recharge varied between 17.5% in
Haramon area and 80% in Sher Mansour area. The results showed that
portions of rainfall reaching groundwater are not equal in the deferent
subsurface zones and are deferent from those calculated by water balance
method.
References used
Brassington, R. (2007). Field Hydrogeology, Wiley, 279 p
Ford, D., Williams, P. (2007). Karst Hydrogeology and Geomorphology, Wiley, 578p
Mangin, A. (1970). Á L'étude des aquifère karstiques à partir de L'analyse des courbes de dé cure et tarissement :Annales de spé Le bogie 581-610
The Barada River and the ground waters of Damascus Gouta are
considered as a source for irrigation and for increasing the fertility of
the soil since the very old times. But, the concentrate on the rabid
agricultural and industrial development led
The third sector of lower Euphrates basin has a great economic importance, but some
lands have gone out of service because of salinization due to the rise of groundwater levels.
Thus, it is very important to solve the ground water issue using new s
Groundwater Samples were collected from seven locations distributed in
Lattakiabasin during the winter and summer seasons of 2013.All samples were treated
chemically and calculated statistically to evaluate the quality of the studied water and its
The Drastic method has been used to assess the potential sensitivity of the
Groundwater In Lattakia basin using Arc GIS 9.2 Where the modified Drastic system has
been developed by combining the land uses and its divisions with general Drastic model
The provision of adequate drainage and the accompanying problem of
accumulation of salt in soil have plagued irrigated agriculture for
centuries. Soil salinity is one of the major problems in arid and semi-arid
zones. In Euphrates valley the high