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Register a new userEvaluation Of Seawater Intrusion With groundwater In Al-Bassa Coastal Area For 2014 Using Chemical Monitoring
تقييم تداخل مياه البحر مع المياه الجوفية في منطقة البصّة الساحلية لعام 2014 باستخدام الرصد الكيميائي
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Tishreen University ورقة بحثية
Publication date
2018
fields
Geology
and research's language is
العربية
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يتضمن هذا البحث تقييم مشكلة تداخل مياه البحر في منطقة البصّة لعام 2014 من خلال عمليات الرصد الكيميائي الفصلي لمجموعة من آبار الإعتيان، في ظل ظروف معينة خضعت لها المنطقة أثناء إجراء البحث، و تمثلت بتراجع الهطل المطري في منطقة الدراسة حيث لم يتجاوز 500 ملم/ سنة؛ مما نتج عنه توقف عمليات الري من بحيرة 16 تشرين و إعادة استخدام العديد من آبار الضخ المهجورة. توصّلت الدراسة إلى حدوث ارتفاع في قيم الملوحة في منطقة البضة الساحلية صيفاً عام 2014، حيث تراوحت بين (6665.-6432) ملغ/ل، بعد ازدياد معدلات الضخ اليومية، بالإضافة إلى ارتفاع تراكيز الكلور و الصوديوم في أغلب مياه آبار الاعتيان بالتزامن مع درجات الملوحة المرتفعة، أما في فصل الخريف انخفضت قيم الملوحة لتتراوح بين (490-950) ملغ/ل . تشير النسبة الجيوكيميائية Cl/Na إلى قيم أقل من 0,84 في معظم العينات المائية خلال فصل الصيف، بينما سجلت هذه النسبة في فصل الخريف قيماً تجاوزت 0,84 في معظم العينات المائية الأمر الذي يعدّ مؤشراً على وجود مصدرٍ للمياه البحرية.
This study includes the evaluation of the problem of seawater intrusion in Al-Bassa area in 2014 through chemical monitoring of a group of sampling wells, under certain condition that were subjected to the area during the research, representing by rainfall precipitation in the study area was only 500 mm/ year, as a result in the suspension of irrigation from 16 October lake and reuse of many abandoned pumping wells. This study founds an increasing in the salinity values in the Al- Bassa coastal area of summer in 2014, ranging between(665.6-6432mg/l)after increasing daily pumping rates, in addition to the increasing of chloride and sodium concentrations in most of sampling wells water in conjunction with high salinity levels. In the fall, the salinity values ranged between 490-950 mg / l. The geochemistry of Na/Cl indicates values less than 0.84 in most water samples during the summer, while in autumn this percentage was higher than 0.84 in most samples ,to be an indicator for marine water.
References used
CAU, P،LECCA, G،PUTTI, M & PANICONI, C.The influence of a confining layer on saltwater intrusion under surface recharge and groundwater extraction conditions.Developments in Water Science,47,2002,493-500
ABD-ELHAMID, H & JAVADI, A. An investigation into control of saltwater intrusion considering the effects of climate change and sea level rise. Proceedings of 20th Saltwater Intrusion meeting, 2008. 4-7
AYERS, R.S. & WESTCOT, D.W. Water quality for agriculture FAO irrigation and drainage paper No 29. FAO publications. Rome .Italy,1976, 107
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