نتایج جستجو برای: gwqi
تعداد نتایج: 38 فیلتر نتایج به سال:
یکی از روشهای ارزیابی کیفیت آب زیرزمینی استفاده از شاخص کیفی آب زیرزمینی (GWQI) میباشد که یک روش ترکیبی از مؤلفههای کیفی مختلف آب زیرزمینی است. هدف از این مطالعه ارزیابی کیفیت آب زیرزمینی دشت مرودشت-خرامه برای آشامیدن با استفاده از GWQI با استفاده از فناوری زمینآمار در محیط GIS بود. برای این منظور از میانگین دادههای کیفی 5 ساله 49 چاه استفاده گردید. GWQI با استفاده از روش وزندهی به مؤلفه...
The aim of this paper is to adapt a water quality index for individual samples and to compare the results with that of the original GIS-based approach. Thirteen water quality parameters observed in 97 wells from the Shahrekord aquifer were used. In GIS-based method, quality parameters maps are difference-normalized, ranked and GWQI map is drawn. In derived method, observations from individual w...
The aim of this study was to assess the drinking quality of Shahrekord aquifer based on a GWQI (groundwater quality index) within a GIS framework. To do this, samples from 97 wells were analyzed for pH, Electrical Conductance (EC), Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Turbidity, Ca2+, Mg2+, Na+, K+, Cl-, HCO3- and SO42-, and total hardness was also calculated. These water...
شاخص کیفیت آب زیرزمینی (gwqi) یکی از شاخص های مهم در تعیین کیفیت آب های زیرزمینی است. هدف پژوهش حاضر ارزیابی کیفیت شرب آب زیرزمینی لردگان براساس شاخص کیفیت آب زیرزمینی (gwqi) در محیط سامانه اطلاعات جغرافیایی (gis) است. به این منظور، در 32 حلقه چاه ph، ec، tds (کل جامدات محلول)، tss (کل جامدات معلق)، کدورت، یون های اصلی، نیترات (no 3 2- ) و فسفات (po 4 2- ) اندازه گیری و سختی کل محاسبه شد. نقشه ...
The rapid growth in the world population resulted an increase of freshwater needs many sectors. Groundwater is most important source specially for arid and semi-arid regions due to lack surface water sources low precipitation rates those regions. In this study, monthly groundwater quality data were collected from eleven well fields Sharjah over period 2004-2017. Water parameters including bicar...
Abstract Background and purpose:In many regions especially in the north of Iran groundwater is the most important resource for drinking supply. A present study was carried out in the Tajan plain in northern Iran. The aim of this study was to evaluate the quality of groundwater. Materials and Methods:In order to constructing the groundwater quality index (GWQI) 3 main levels were composed select...
Abstract In the present study, multilayer perceptron (MLP) neural network and support vector regression (SVR) models were developed to assess suitability of groundwater for drinking purposes in northern Khartoum area, Sudan. The quality was evaluated by predicting index (GWQI). GWQI is a statistical model that uses sub-indices accumulation functions reduce dimensionality data. first stage, calc...
abstract background and purpose:in many regions especially in the north of iran groundwater is the most important resource for drinking supply. a present study was carried out in the tajan plain in northern iran. the aim of this study was to evaluate the quality of groundwater. materials and methods:in order to constructing the groundwater quality index (gwqi) 3 main levels were composed select...
The study of groundwater quality is typically conducted using water indices such as the Groundwater Quality Index (GQI) or GroundWater (GWQI). are calculated field data and a scoring system that uses ratios constituents to prescribed standards weights based on each constituent’s relative importance. results obtained by this procedure suffer from inherent subjectivity, consequently may have some...
آب زیرزمینی شهرکرد تنها منبع اصلی تأمین آب شرب، صنعت و کشاورزی این دشت است.هدف از انجام این پروژهارزیابی و پهنه بندی کیفیت آب زیرزمینی شهرکرد برای مصارف مختلف (شرب، صنعت، آبیاری عمومی و آبیاری قطره ای) بود. در این مطالعه از 97 حلقه چاه کشاورزی طی 4 مرتبه در فصل های تابستان (تیر و شهریور) و پاییز (آبان) در سال 1389 و بهار(خرداد) در سال 1390نمونه برداری شد. دمای هر نمونه در محل نمونه برداری قرائت...
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