نتایج جستجو برای: tds and ec. therefore
تعداد نتایج: 16835441 فیلتر نتایج به سال:
the present study was carried out to evaluate three interpolation methods including weighted moving average (wma) with the power of 2 and 3, kriging and cokriging methods. data of 23 wells in mazandaran province were collected in fall and spring 2006. seven parameters including electrical conductivity (ec), ph, total dissolved solids (tds), sodium adsorption ratio (sar), total hardness (th), ch...
The present study was carried out to evaluate three interpolation methods including weighted moving average (WMA) with the power of 2 and 3, Kriging and Cokriging methods. Data of 23 wells in Mazandaran province were collected in fall and spring 2006. Seven parameters including electrical conductivity (EC), pH, total dissolved solids (TDS), sodium adsorption ratio (SAR), total hardness (TH), ch...
in recent years, the groundwater resources in guilan province have played an important role in irrigating paddy fields. the goal of this study was to evaluate temporal and spatial variations of groundwater quality in a 4-year period using ordinal kriging. water samples for this study were collected from 130 wells across guilan province, in september and march from 2003 to 2006. maps of ec and ...
Background and Objective: In the present study, EC and TDS quality parameters of Karun River were modeled using data-mining algorithms including LSSVM, ANFIS, and ANN, at Mollasani, Ahvaz and Farsiat hydrometric stations. Material and Methods: Eight different inputs including the combination of Cl-1, Ca+2, Na+1, Mg+2, K+1, CO32-, HCO3, and SO42- with discharge flow (Q) were selected as non-ran...
one of the main aims of water resource planners and managers is to estimate and predict the parameters of groundwater quality so that they can make managerial decisions. in this regard, there have many models developed, proposing better management in order to maintain water quality. most of these models require input parameters that are either hardly available or time-consuming and expensive to...
Public concerns related to the fast-growing shale oil and gas industry have increased during recent years. The major concern regarding shale gas production is the potential of fracturing fluids being injected into the well or produced fluids flowing out of the well to contaminate drinking water resources such as surface water and groundwater. Fracturing fluids contain high total dissolved solid...
The objective of this study is to determine various water characteristics the Bhima River and its suitability for drinking, followed by a quality index evaluation. For continuous monitoring, samples were taken at eight locations between October 2020 September 2021. physicochemical parameters, such as pH, electrical conductivity (EC), total dissolved solids (TDS), oxygen (DO), alkalinity (TA), h...
امروزه به دلیل رشد روز افزون جمعیت تغییر کاربری نامتناسب اراضی یکی از مسائل اساسی جهانی است که دارای تبعات متعددی است؛ که از جمله می توان به تاثیر تغییر کاربری اراضی بر کیفیت آب اشاره کرد. در این تحقیق تاثیر تغییرات کاربری اراضی بر روی کیفیت آب زیرزمینی حوزه آبخیز دریاچه زریبار مطالعه شد. به منظور به حداقل رساندن اثر اقلیم بر روی کیفیت آب زیرزمینی از آمار سال های دارای تشابه اقلیمی استفاده گرد...
Huge waste generation by the rapidly growing Mamfe town is posing enormous environmental challenges. This work that aimed at examining implications of household on potable water sources, used mixed research design, combining descriptive and experimental approaches. Ground (Two wells, one borehole) surface (two streams) sources were sampled empirical data for physicochemical parameters (PH, EC, ...
One of the main aims of water resource planners and managers is to estimate and predict the parameters of groundwater quality so that they can make managerial decisions. In this regard, there have many models developed, proposing better management in order to maintain water quality. Most of these models require input parameters that are either hardly available or time-consuming and expensive to...
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