تقويم موارد المياه الجوفية الحرّة في سهل جبلة
Abstract
تشكّل المنطقة المدروسة جزءاً من سهل جبلة الذي يعدّ من المناطق المهمّة اقتصادياً وسياحياً، وتبلغ مساحتها حوالى 12 km2.
يهدف البحث إلى دراسة ظروف توضع المياه الجوفية في المنطقة، وتقويم موارد المياه الجوفية فيها.
اعتمدت الدراسة على القياسات في شبكة رصد موزّعة بشكل شبه منتظم في المنطقة، وتتألف الشبكة من 23 بئر مراقبة محفورة في توضعات الرباعي.
تتراوح تغيّرات مناسيب المياه الجوفية في توضّعات الرباعي بين 0.53 و 3.7م، بسبب التغذية الراشحة من مياه الأمطار شتاءً، وتسرّب مياه الري صيفاً. وتتناقص مناسيبها صيفاً بسبب الضخ لأغراض الري. تتراوح الناقلية الكهربائية للمياه الجوفية بين 407 و 1932 ميكروموس/ سم، إذ تُسهم مياه البحر في زيادة ملوحة المياه الجوفية في منطقة سوكاس القريبة من شاطئ البحر. تتراوح قيم عامل الرشح k للطبقة المائية المؤلفة من غضار مع رمل وحصى بين 0.03- 1.5 م/يوم في منطقة الدراسة.
The study area constitutes a part of Jableh Plain which is considered a region which has economic and tourist importance. The study area is about 12 km2.
The research aims to study and evaluate the groundwater resources in the area. The study depends on measuring on monitoring network, which regularly is distributed in the region. The network consists of 23 wells drilled in the Quaternary deposits.
The changes of groundwater levels in the Quaternary deposits fluctuate between 0.53 and 3.7m, due to the infiltrated recharge of the rainfall in winter, and irrigation water infiltration in the Summer. The Groundwater levels decrease due to pumping for irrigation.
The electrical conductivity of the groundwater amounts to 407-1932 µs/cm, with sea water contributing to increase the saltiness of groundwater at Soukas which is near the beach. The hydraulic conductivity (k) of aquifer which consists of clay with sand and stones ranges between 0.03-1.5 m/day in the research area.
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