Results 61 to 70 of about 412,021 (341)

Multi-scale Digital Twin: Developing a fast and physics-informed surrogate model for groundwater contamination with uncertain climate models [PDF]

open access: yesarXiv, 2022
Soil and groundwater contamination is a pervasive problem at thousands of locations across the world. Contaminated sites often require decades to remediate or to monitor natural attenuation. Climate change exacerbates the long-term site management problem because extreme precipitation and/or shifts in precipitation/evapotranspiration regimes could re ...
arxiv  

Quantification of Urban Groundwater Recharge: A Case Study of Rapidly Urbanizing Guwahati City, India

open access: yesUrban Science
The interaction between groundwater and urban environments is a growing concern for many rapidly urbanizing cities around the world, affecting both recharge and flow, since impervious surfaces reduce infiltration by increasing runoff, whereas over ...
Jayashri Dutta   +2 more
doaj   +1 more source

One million year old groundwater in the Sahara revealed by krypton-81 and chlorine-36 [PDF]

open access: yes, 2004
Measurements of 81Kr/Kr in deep groundwater from the Nubian Aquifer (Egypt) were performed by a new laser-based atom-counting method. 81Kr ages range from \~2x10^5 to ~1x10^6 yr, correlate with 36Cl/Cl ratios, and are consistent with lateral flow of groundwater from a recharge area near the Uweinat Uplift in SW Egypt.
arxiv   +1 more source

A method to estimate groundwater recharge [PDF]

open access: yesBulletin of the Geological Society of Malaysia, 2003
The conventional method of groundwater recharge estimation is reviewed and a computer program to ease the estimation is presented. The calculation takes into account precipitation, evaporation, soil moisture and the resultant recharge. The validity of the program is tested against MORECS data. An assessment of recharge to aquifer system in Langat river
Nazari Jaafar   +2 more
openaire   +2 more sources

Aquatic invertebrate responses to riparian restoration and flow extremes in three degraded intermittent streams: An eight‐year field experiment

open access: yesFreshwater Biology, Volume 68, Issue 2, Page 325-339, February 2023., 2023
Abstract Worldwide, riparian zones of many intermittent rivers and ephemeral streams (IRES) have been severely degraded. However, compared with perennially flowing waters, there have been few restoration efforts (e.g., revegetation, livestock removal) to halt or reverse this degradation.
Paul Reich   +7 more
wiley   +1 more source

Mapping groundwater recharge potential zone using a GIS approach in Hualian River, Taiwan

open access: yesSustainable Environment Research, 2016
Hualian River is abundant in runoff and high in sediment transport capacity. Most surface water is utilized for agricultural purposes, whereas domestic and industrial water usage relies on the copious amount of available groundwater.
Hsin-Fu Yeh   +3 more
doaj   +1 more source

Assessment of Groundwater Recharge in Agro-Urban Watersheds Using Integrated SWAT-MODFLOW Model

open access: yes, 2020
Numerical models are employed widely to evaluate the hydrological components of a watershed but, traditionally, watershed models simplify either surface or subsurface flow module.
B. Yifru   +3 more
semanticscholar   +1 more source

Groundwater Recharge Research in Saskatchewan [PDF]

open access: yesCanadian Water Resources Journal, 1985
A system to pump, treat, and inject surface water into selected aquifers through existing wells has been developed. The factors considered in the design of a system for recharging groundwater, and a procedure for evaluating potential groundwater recharge sites, are discussed. A pumping, treatment and injection system has been successfully field tested.
D.I. Norum, J.A. Gillies, J.M. Murray
openaire   +2 more sources

Comparisons of biomass, water use efficiency and water use strategies across five genomic groups of Populus and its hybrids

open access: yesGCB Bioenergy, Volume 15, Issue 1, Page 99-112, January 2023., 2023
Abstract Genetic improvement and hybridization in the Populus genus have led to the development of genotypes exhibiting fast growth, high rooting ability and disease resistance. However, while large biomass production is important for bioenergy crops, efficient use of resources including water is also important in sites lacking irrigation and for ...
Heidi J. Renninger   +2 more
wiley   +1 more source

Conventional and futuristic approaches for the computation of groundwater recharge: A comprehensive review

open access: yesJournal of Groundwater Science and Engineering
Groundwater recharge is a critical hydrologic component that determines groundwater availability and sustainability. Groundwater recharge estimation can be performed in a variety of ways, ranging from direct procedures to simulation models.
Shamla Rasheed, Marykutty Abraham
doaj   +1 more source

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