Application of Monte Carlo Simulation to Find Travel Time of Groundwater in the Iraqi Western Desert

Sachit, Dawood Eisa; Azawi, Hayat

doi:10.5539/enrr.v8n1p17

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…Ground water flows from the west and southwest to the east and northeast in the Western Desert [10]. Figure 4 shows the water level reaches (10-46) meters above sea level .…”

Section: Movement Of Groundwatermentioning

confidence: 99%

Hydraulic Characteristics of Dammam Aquifer in Sayed Al-Shuhadaa Agricultural city, Karbala- Iraq

Mahmood

2022

basjs

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This study's objective is to investigate the hydraulic properties of the Dammam aquifer utilizing three acceptable pumping wells for experimental pumping. The location under study is an agricultural project known as Sayed Al-Shuhadaa agricultural city, which is located in the Al-Ukhaidir section of the Ain Al-Tamar district, to the southwest of Razzaza Lake and west of the Holy Karbala province. Theis and Hantush methods had been applicated to analyze pumping test data. The ranges for transmissivity, hydraulic conductivity and storage coefficient are (111.3 - 1705.1) m2/day, (22.23 - 32.11) m/day, and (0.00075-0.0011) respectively. The agricultural city of Sayed Al-Shuhadaa was formerly a desolate desert, but it was transformed into an agriculturally productive region after (5000) donams of wheat were cultivated this season. The most important characteristic of this region is the use of pivotal irrigation systems of global origin, and the water source used in the farm is from the ground sea (groundwaterwater), as this source provides greater assurance of the sustainability of the farm's production, and aims to determine the hydraulic characteristics of the aquifer in the event that suitable wells are available for pumping tests. Calculating water excess and shortfall by performing the water balance. Assessing the appropriateness of groundwater for agricultural and irrigation purposes by analyzing its hydrochemical properties and quality. An attempt to implement a plan for agricultural groundwater management.

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“…Ground water flows from the west and southwest to the east and northeast in the Western Desert [10]. Figure 4 shows the water level reaches (10-46) meters above sea level .…”

Section: Movement Of Groundwatermentioning

confidence: 99%

Hydraulic Characteristics of Dammam Aquifer in Sayed Al-Shuhadaa Agricultural city, Karbala- Iraq

Mahmood

2022

basjs

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“…With the help of a historical groundwater piezometric map, Baalousha (2016) investigated the flow to the sea by coupling MCS to Darcy's Law with a water balance model to quantify rainfall recharge. Sachit and Azawi (2018) have predicted the travel time of groundwater flow in the Iraqi western desert through a computerized mathematical method represented by MCS using Darcy's Law in which hydraulic conductivity was considered as a random field. Norouzi et al (2019) applied an algorithm based on coupling MCS and a Markov chain for exploring the uncertainty of hydraulic head and salinity in aquifers.…”

Section: Introductionmentioning

confidence: 99%

Stochastic Modeling of the Theis Equation via Karhunen–Loeve and Polynomial Expansions

Mohsenian

Khorshidi

Szymkiewicz

2023

Preprint

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Groundwater is a vital water resource which has a significant role in the irrigation and food industry. Drawdown is a change in groundwater level due to various causes, especially pumping from wells. Forecasting water level oscillations is an important necessity for planning the integrated management of any watershed basin. In the present study, the Theis equation was applied to stochastic analysis of groundwater flow in confined aquifers, through the Karhunen–Loeve expansion (KLE) method. The quantification of the uncertainty associated with the statistical moments of hydraulic head is the aim of this research. The KLE method takes two steps; first, aquifer transmissivity (T) as an input random field is decomposed in the form of a set of orthogonal Gaussian random expressions in which eigen structures related to the covariance function of T were obtained from the Fredholm equation. Then, the hydraulic head h(x,t) was expanded with polynomial terms in which some coefficients were computed from the governing equation. The statistical moments (i.e., mean values and variances) of h(x,t) were calculated and compared with Monte Carlo simulations (MCS) to validate the results.

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Uncertainty in soil hydraulic parameters: A review of basics and methods

Sharma¹,

Swami²,

Thakur³

2021

WPE

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The paper is a review article on the basics of uncertainty, necessity of its quantification and a comparative study of various methods of uncertainty estimation. The paper primarily focusses on uncertainty estimation of soil hydraulic parameters as of their pivotal importance in groundwater flow and transport simulations, soil moisture modelling techniques etc. The deterministic and probabilistic approaches of uncertainty quantification are studied and an understanding of uncertainty based on field scale measurements, empirical methods and pedotransfer functions is established. A comparative analysis of the basic methods of uncertainty analysis Monte Carlo, Bayesian, FORM/SORM and GLUE is done and the preferential use based on the importance is suggested. Bayesian approach was most suitable for evaluating parametric uncertainty, Monte Carlo was one of the most powerful tools but computationally expensive, FORM was applicable to both numerical and analytical solutions but didn’t guarantee a global convergence and GLUE was conceptually simple but gave only a statistical measure.

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Application of Monte Carlo Simulation to Find Travel Time of Groundwater in the Iraqi Western Desert

Cited by 4 publications

References 9 publications

Hydraulic Characteristics of Dammam Aquifer in Sayed Al-Shuhadaa Agricultural city, Karbala- Iraq

Hydraulic Characteristics of Dammam Aquifer in Sayed Al-Shuhadaa Agricultural city, Karbala- Iraq

Stochastic Modeling of the Theis Equation via Karhunen–Loeve and Polynomial Expansions

Uncertainty in soil hydraulic parameters: A review of basics and methods

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