Methodologies of groundwater vulnerability assessment and spatial analysis of groundwater quality : comparison of methods under urbanization stress

الموضوعات

علوم بحتة وطبيعية

الملخص

This study is divided into two parts. The first part is titled “Assessment of methodologies for groundwater vulnerability to seawater intrusion along coastal and urban Areas”. It evaluates the performance of DRASTIC and EPIK, two commonly used groundwater vulnerability assessment models, using groundwater quality data by establishing water quality categories and cross-checking field measurements to that of simulated vulnerability levels. The results of this study show that the vulnerability levels in outcropping Karstic formations in Mount Lebanon and Anti Lebanon to be of high vulnerability with both used models. The extent of accuracy of the evaluation criteria for the water vulnerability assessment was limited by the accuracy of experimental measurements, the choice of analyzed parameters and model assumptions. The second Part is titled “Variation of the Spatial distribution of Groundwater Quality in Karstic aquifers under urbanization stress”. It evaluates the ability of different spatial interpolation methods to produce accurate groundwater quality maps using interpolation schemes. This study uses three different interpolation methods (IDW, Kriging, and Co-Kriging) with combinations of different semivariogram models and data transformation, producing 380 different combinations-scenarios. The study evaluated the accuracy of these scenarios using three validation approaches, (1) statistical indicators by Leave-One-Out cross validation method; (2) matching the results of measured and interpolated values based on established water quality categories, and (3) evaluating the accuracy relying on the results of groundwater vulnerability assessment (GVA). The results varied between cities and to the values of the measured parameters, and it also showed the different function of the two methods, which could not be used interchangeably.

روابط وملفات

التعريف والنوع

رقم الوثيقة

0578703c-01df-41a2-b1e9-ef6f5b5e2991

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

1634536_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":"Majdi Abou Najm","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Nanor Avedis Momejian","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

English

المصدر والدورية

اسم المصدر

Methodologies of groundwater vulnerability assessment and spatial analysis of groundwater quality : comparison of methods under urbanization stress

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

Majdi Abou Najm

الإعداد

Nanor Avedis Momejian

الاقتباسات الببليوغرافية