Results 21 to 30 of about 4,919,113 (388)

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

Effects of coal mining and tunnel excavation on groundwater flow system in karst areas by modeling: A case study in Zhongliang Mountain, Chongqing, Southwest China

open access: yesJournal of Groundwater Science and Engineering, 2023
A karst groundwater system ranks among the most sensitive and vulnerable types of groundwater systems. Coal mining and tunnel excavation can greatly change the natural hydrogeological flow system, groundwater-dependent vegetation, soil, as well as ...
Qing-shan Li   +3 more
doaj   +1 more source

Numerical modelling study on non-steady-state groundwater flow systems in response to changing rainfall

open access: yes地质科技通报, 2023
Objective Geological, climatic, and topographical conditions control regional groundwater flow systems. Previous researchers have made significant advancements in developing the theory of groundwater flow systems under steady-state climatic conditions ...
Xiaolang Zhang, Jiu Jiao Jimmy
doaj   +1 more source

Flow and Storage in Groundwater Systems [PDF]

open access: yesScience, 2002
The dynamic nature of groundwater is not readily apparent, except where discharge is focused at springs or where recharge enters sinkholes. Yet groundwater flow and storage are continually changing in response to human and climatic stresses. Wise development of groundwater resources requires a more complete understanding of these changes in flow and ...
William M. Alley   +3 more
openaire   +3 more sources

Groundwater seepage landscapes from distant and local sources in experiments and on Mars [PDF]

open access: yes, 2015
© 2014 Author(s). Valleys with theater-shaped heads can form due to the seepage of groundwater and as a result of knickpoint (waterfall) erosion generated by overland flow.
Hauber, E.   +5 more
core   +3 more sources

Risk of groundwater contamination widely underestimated because of fast flow into aquifers

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2021
Significance Clean groundwater is essential for water supply in many regions of the world. Fast flow to the groundwater through enlarged cracks and fissures, which is known to transmit short-lived pollutants into the groundwater, is often neglected in ...
A. Hartmann   +23 more
semanticscholar   +1 more source

A multi-criteria approach of assessing groundwater potential, recharge and flow in the transboundary Tuli Karoo Basin

open access: yesWater Practice and Technology, 2022
Quantitative estimates of amount of groundwater resources are required in the transboundary Tuli Karoo Basin to better manage and promote sustainable conjunctive use of the aquifer. Unfortunately, such important data and information are lacking.
Primrose C. Tinonetsana   +2 more
doaj   +1 more source

Numerical modelling in support of a conceptual model for groundwater flow and geochemical evolution in the southern Outaouais Region, Quebec, Canada [PDF]

open access: yes, 2017
A two-dimensional vertical-section numerical model for groundwater flow and transport using age, tritium and chloride was used to help validate a conceptual model of geochemical evolution within a representative regional-scale hydrogeological system in ...
Lemieux, Jean-Michel   +2 more
core   +1 more source

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