Results 11 to 20 of about 143,859 (319)

Groundwater Flow and Transport [PDF]

open access: yes, 2021
AbstractWe summarize the basic principles of, and governing equations for, groundwater flow and transport. Topics covered include the concepts of pressure and hydraulic head, Darcy’s law, permeability, and storage. We compare saturated and unsaturated flow. We provide an introduction to heat and solute transport.
Michael Manga, Chi-Yuen Wang
openaire   +2 more sources

Evolution of the theory of regional groundwater flow and updates in textbooks

open access: yes地质科技通报, 2022
The theory of regional groundwater flow proposed by Tóth provides a quantitative analysis approach for the study of basin-scale groundwater circulation.
Xiaowei Jiang   +3 more
doaj   +1 more source

Temperature field and dynamic types of shallow groundwater in the northwest inland basin: A case study of the Jiuquan East Basin

open access: yes地质科技通报, 2022
Temperature is an inherent property of groundwater.Groundwater temperature field and dynamic characteristics are objective manifestations of groundwater flow system.Based on multi-point, long series and high precision groundwater temperature monitoring ...
Dechao Yin   +6 more
doaj   +1 more source

Exergoenvironmental damages assessment in a desert‐based agricultural system: A case study of date production

open access: yesAgronomy Journal, Volume 114, Issue 6, Page 3155-3172, November/December 2022., 2022
Abstract Developing countries, especially those in hot and dry areas, need more attention to achieve sustainable development as they apply excessive inputs in production processes. The present study aims to quantify the amount of environmental emissions and determine the most appropriate pattern of energy use in the date (Phoenix dactylifera L ...
Reza Hesampour   +4 more
wiley   +1 more source

Visualization Method for Porous Groundwater Seepage Flow Field Based on Particle Flow: Case of Yancheng City in the East Coast of China

open access: yesGeofluids, 2022
Porous groundwater seepage flow field reflects the spatiotemporal dynamic characteristics of porous groundwater movement. The geometric point and vector line methods are the traditionally used visualization methods for groundwater seepage flow field ...
Liang He, Ling Chen, Suozhong Chen
doaj   +1 more source

Mapping of Groundwater Flow Pattern and its Quality Index based on Microbiological Parameters in Klojen District, Malang City, East Java, Indonesia

open access: yesCivil and Environmental Science Journal, 2021
Groundwater is one source of fulfilling water needs for the Klojen district, the most populous district in Malang City. Population density affects the condition of groundwater quality because it causes pollution.
Veronika Yulia Permata   +2 more
doaj   +1 more source

Attention U-Net as a surrogate model for groundwater prediction [PDF]

open access: yesAdvances in Water Resources, Volume 163, May 2022, 104169, 2022
Numerical simulations of groundwater flow are used to analyze and predict the response of an aquifer system to its change in state by approximating the solution of the fundamental groundwater physical equations. The most used and classical methodologies, such as Finite Difference (FD) and Finite Element (FE) Methods, use iterative solvers which are ...
arxiv   +1 more source

Hydrogeochemical indicators of hierarchically nested structure of karst groundwater flow systems in the ejective folds area

open access: yes地质科技通报, 2022
The karst groundwater flow system in the ejective folds area in the eastern Sichuan Basin shows the characteristics of a hierarchically nested structure.
Yayi Li, Qiang Xia, Mo Xu, Cong Cao
doaj   +1 more source

Groundwater flow on a drained beach [PDF]

open access: yesWIT Transactions on Modelling and Simulation, 2013
This paper deals with the analysis of the groundwater flow on a drained beach. Infiltration processes in static conditions (without running waves) are numerically simulated by using HYDRUS-2D software. Nevertheless, field and laboratory experiments show the possibility of studying the influence of the system on both nearshore hydrodynamics and ...
Saponieri A, Damiani L
openaire   +3 more sources

Redistribution of hydrogen and oxygen isotopes in groundwater flow systems: From altitude effect to depth effect

open access: yesShuiwen dizhi gongcheng dizhi, 2023
The hydrogen and oxygen isotopes in precipitation have the altitude effect, and they participate in the groundwater circulation after the infiltration of precipitation.
Pengfei HAN   +3 more
doaj   +1 more source

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