Relevant bibliographies by topics / Recharge

Academic literature on the topic 'Recharge'

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Published: 4 June 2021
Last updated: 8 June 2024

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Journal articles on the topic "Recharge"

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He, Liang, Junru Zhang, Suozhong Chen, Manqing Hou, and Junyi Chen. "Groundwater recharge pathway according to the environmental isotope: the case of Changwu area, Yangtze River Delta Region of China." Water Supply 22, no. 3 (December 7, 2021): 2988–99. http://dx.doi.org/10.2166/ws.2021.422.

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Abstract Groundwater recharge is an important factor affecting water circulation. As groundwater has slow seepage, directly observing the seepage velocity and recharge path of groundwater in the aquifer is difficult. Environmental isotope technology has become an important means to clarify the mechanism of groundwater movement and the mechanism by which groundwater recharges from the micro and macro perspectives. The Changwu area of Jiangsu Province was taken as an example to identify the recharge sources of groundwater and the recharge paths of groundwater and surface water by using the measured data of isotopes D, 18O, 34S, and T. The results indicated that the shallow aquifer and the I confined aquifer in the Changwu area are mainly recharged by precipitation and surface lake water. The II confined aquifer along the Yangtze River is recharged by modern precipitation. Moreover, the II confined aquifer in the Henglin area was recharged by the ancient Yangtze River before 4,000 years ago, and no recharge relationship exists now. the recharge condition of the II confined aquifer around the northwest of Gehu Lake is in the climate environment of 8,000 years ago and was caused by the surface depression lake water at that time. Additionally, the concealed limestone aquifer is primarily supplied by the II confined aquifer, while the concealed sandstone aquifer supplies the II confined aquifer. Hence, to find out the recharge conditions of groundwater aquifers based on the environmental isotope is conducive to scientific and reasonable evaluation of groundwater resources and to ensure the sustainable development and utilization of groundwater resources.
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Wu, Peipeng, Lijuan Zhang, Bin Chang, and Shuhong Wang. "Effects of Decaying Hydraulic Conductivity on the Groundwater Flow Processes in a Managed Aquifer Recharge Area in an Alluvial Fan." Water 13, no. 12 (June 11, 2021): 1649. http://dx.doi.org/10.3390/w13121649.

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Groundwater artificial recharge and medium characteristics represent the major factors in controlling the groundwater flow processes in managed aquifer recharge areas. According to the depositional features of alluvial fans, an analogous homogeneous phreatic sand tank aquifer and the corresponding inhomogeneous scale numerical models were established to investigate the groundwater flow under the combined influence of artificial recharge (human activities) and decaying hydraulic conductivity (medium characteristics). In this study, groundwater flow through a managed aquifer recharge area in an alluvial fan was analyzed under the conditions of decaying hydraulic conductivity (K) with depth or length from apex to apron. The results showed that groundwater flow processes induced by artificial recharge were significantly controlled by the increasing decay exponents of K. The decaying K with depth or length in alluvial fan areas expanded the degree of influence of artificial recharge on groundwater flow. With the increase of decay exponents, the flow directions gradually changed from a horizontal to vertical direction. Groundwater age and spatial variability could also be increased by the increasing decay exponents. The residence time distributions (RTDs) of ambient groundwater and artificially recharged water exhibited logarithmic, exponential, and power law behavior. Penetration depth and travel times of ambient groundwater flow could be affected by artificial recharge and decay exponents. Furthermore, with the increase of decay exponents, the thickness of the artificially recharged water lens and travel times of artificially recharged water were increased. These findings have important implications for the performance of managed aquifer recharge in alluvial fan areas as well as the importance of considering the gradual decrease of K with depth and length.
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Bouwer, Herman. "Issues in artificial recharge." Water Science and Technology 33, no. 10-11 (May 1, 1996): 381–90. http://dx.doi.org/10.2166/wst.1996.0696.

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Interest in artificial recharge with normal water and sewage effluent continues to increase. Issues discussed in this paper include recharge with infiltration basins, soil-aquifer treatment of sewage effluent, potable use of water from aquifers recharged with sewage effluent, nitrogen removal, pre-treatment of sewage effluent, disinfection, well recharge, clogging parameters, superchlorination, disinfection byproducts, vadose zone wells, seepage trenches, and constructed aquifers used as intermittent sand filters.
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Ščajev, Patrik, K. Jarašiūnas, P. L. Abramov, S. P. Lebedev, and A. A. Lebedev. "Optical Characterization of Compensating Defects in Cubic SiC." Materials Science Forum 740-742 (January 2013): 401–4. http://dx.doi.org/10.4028/www.scientific.net/msf.740-742.401.

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We present investigation of carrier recombination and optical trap recharge in sublimation grown n- and p-type 3C layers by using time-resolved nonlinear optical techniques. Carrier lifetime and recharged trap recovery were measured by differential transmittivity technique. By monitoring nonequilibrium carrier dynamics, we analyzed impact of carrier density and temperature on carrier lifetime and recharged trap recovery rate. Large carrier lifetime and small diffusivity at low injections in highly compensated samples and their dependences on injection were explained by optical recharge of compensating aluminum impurities. The complete recharge of the compensating impurities by optical means allowed us to calculate the compensating aluminum density in n-type samples and compensating nitrogen in p-type ones.
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Mohammed, Shahad Shaker, Khamis Naba Sayl, and Ammar Hatem Kamel. "Ground Water Recharge Mapping in Iraqi Western Desert." International Journal of Design & Nature and Ecodynamics 17, no. 6 (December 31, 2022): 913–20. http://dx.doi.org/10.18280/ijdne.170612.

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Local climate change and water shortage led it essential to assess the amounts and locations of groundwater recharge. To keep the Iraqi Western Desert's groundwater system sustainable. A model was developed to estimate soil moisture using artificial neural networks (ANN), geographic information systems (GIS), and remote sensing (RS). The soil needed approximately 26.54% of the total amount of rainfall to saturate voids before groundwater was recharged during the study years. The amount of recharge of groundwater was estimated depending on the water balancing method. The results showed that approximately 455,306,884 m3 of rainwater during the study years was infiltrated for groundwater recharge, nearly half of the total amount of rainfall. Sandy loam soils were most leached to recharge groundwater, while loam soils were of medium rates for groundwater recharge, and silty loam soils were the lowest rates in groundwater recharge rates.
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Navarro-Farfán, María del Mar, Liliana García-Romero, Marco Antonio Martínez-Cinco, Mario Alberto Hernández-Hernández, and Sonia Tatiana Sánchez-Quispe. "Comparison between MODFLOW Groundwater Modeling with Traditional and Distributed Recharge." Hydrology 11, no. 1 (January 11, 2024): 9. http://dx.doi.org/10.3390/hydrology11010009.

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Groundwater models serve the function of predicting and analyzing aquifer behavior. They require input information, such as hydrogeological parameters like hydraulic conductivity and storage coefficient, which are used to calibrate the model, and elementary actions that include recharge and extracted volumes. There are cases in which it is insufficient to know the homogeneous recharge entering through the surface basin, referred to as traditional recharge, since, in many instances, the distribution is altered by changes in land use. For this reason, based on the geomorphological characteristics of the basin, weighting is proposed for sites with greater recharge capacity. The present work shows a solution to the recharge distribution using the potential groundwater recharge (PGR) map, which is formed by weighting spatially distributed information: (i) drainage, (ii) precipitation, (iii) land use, (iv) geological faults, (v) soil type, (vi) slope, and (vii) hydrogeology. A comparison is made between groundwater modeling using traditional recharge and PGR recharge. It is noted that the modeling perform similarly for both recharges, and the errors do not exceed 5% absolute error, which validates the model’s reliability. This manuscript demonstrates how to model and calibrate groundwater in aquifers with scarce information and variable recharge, making it reproducible.
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Singhal, Vijai, and Rohit Goyal. "A methodology based on spatial distribution of parameters for understanding affect of rainfall and vegetation density on groundwater recharge." European Journal of Sustainable Development 1, no. 2 (June 1, 2012): 85. http://dx.doi.org/10.14207/ejsd.2012.v1n2p85.

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Accurate estimation of groundwater recharge is extremely important for propermanagement of groundwater systems. Attempts have been made by various researchers torelate impact of various parameters on groundwater recharge. In the present study, amethodology based on spatial distribution of parameters has been developed forunderstanding affect of rainfall and vegetation density on groundwater recharge.Normalized Difference Vegetation Index (NDVI) has been used as an indicative parameterfor vegetation density. Raster layers of recharge and various parameters were created for thestudy area and simultaneous values for these parameters were retrieved at the cell level.Zonal analysis was then carried out to understand affect of these parameters ongroundwater recharge. It is observed that the value of recharge increases up to a certainvalue of NDVI, beyond which it starts decreasing with further increase in value of NDVI.The study also reveals a linear trend between groundwater recharge and rainfall. The resultof this study does not provide method of calculating recharge by using single parametersuch as rainfall or NDVI, however, it explores affect of variation in these parameters ongroundwater recharges. The study provides a new insight into the complex interrelationshipbetween groundwater recharge and vegetation density.
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Chiew, FHS, and TA Mcmahon. "Groundwater recharge from rainfall and irrigation in the campaspe river basin." Soil Research 29, no. 5 (1991): 651. http://dx.doi.org/10.1071/sr9910651.

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Reliable estimates of groundwater recharge are required for effective evaluation of management options for salinity control and high water-tables in the Riverine Plain of south-eastern Australia. This paper provides a brief description of the integrated surface and groundwater modelling approach used to estimate regional recharge rates and presents the recharge rates estimated for the Campaspe River Basin. The integrated model is a powerful management tool as it can predict the relationship between rainfall, irrigation, recharge and rises in the water-table levels. The model predicted that approximately 15% of irrigation water recharges the shallow aquifer. Approximately 6% of rainfall contributes to recharge in the irrigated areas while 4 to 5% of rainfall becomes recharge in the dryland areas. Rainfall makes a greater contribution in the irrigation areas compared to the dryland areas because irrigation predisposes the soil to recharge from rainfall. The water-table levels in the irrigation areas are currently rising at approximately 0.14 m yr-1. This rate of rise will increase faster than the increase in irrigation applications.
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Surintanasarn, Atikom, Krisana Siralertmukul, and Niyom Thamrongananskul. "Fluoride Recharge Ability of Resin-Based Pit and Fissure Sealant with Synthesized Mesoporous Silica Filler." Key Engineering Materials 751 (August 2017): 586–91. http://dx.doi.org/10.4028/www.scientific.net/kem.751.586.

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The aim of this study was to examine the effects of active filler in resin-based pit and fissure sealant on fluoride release and recharge abilities. Mesoporous silica was synthesized from tetraethyl orthosilicate (TEOS) using sol-gel method. Resin-based sealant was incorporated with 5% w/w of filler (<45 μm): synthesized mesoporous silica (S), calcium carbonate (C), and fluoro-alumino silicate glass (F). Resin-based sealant without filler added was the control. Ten specimens of each group were separately stored in 3 mL of deionized water and the fluoride concentration, before and after fluoride recharge, were measured every 3 days (from day 3 to day 27). Fluoride release before recharge was only found in F (0.1024±0.0077 ppm) and then gradually decreased to baseline. After two recharges, the highest fluoride release was found in S (0.0804±0.0095 ppm after first recharge and 0.0601±0.0092 after second recharge), followed by F (0.0386±0.0024 ppm after first recharge and 0.0313±0.0027 ppm after second recharge), and then decreased to baseline. Fluoride recharge was not found in C and control. This result suggested that resin-based pit and fissure sealant containing synthesized mesoporous silica filler has fluoride recharge ability which might prevent secondary caries at material-enamel interface.
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Li, Wenliang, Qing Sun, Weiping Wang, Shisong Qu, Zhengxian Zhang, and Qiaoyi Xu. "Effective water quantity of multi-source water recharging aquifers in Yufuhe River based on groundwater and surface water semi-coupled modelling." Water Supply 19, no. 8 (August 1, 2019): 2280–87. http://dx.doi.org/10.2166/ws.2019.109.

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Abstract With rapid urbanisation, a karst water recharge area of the Jinan spring catchment was damaged. Thus, managed aquifer recharge projects were built in the western Jinan spring catchment to protect the water supply of the spring. Yufuhe River was selected as the study area to compute the effective recharge rate into karst aquifers. This strong seepage zone has a large gradient and undergoes a specific hydrogeological condition in which two strata of a gravel layer and limestone change to three strata of gravel, impermeable clay shale and limestone at the open window of the karst aquifers. A hydraulic model called HEC-RAS was applied to simulate the river stage, and a numerical groundwater model called HYDRUS-3D was adopted to simulate the groundwater mound dynamics and estimate river flow seepage into the aquifers. The effective recharge rates are 64.9%, 65.2% and 68.1% when the buried depths of groundwater are 40, 30 and 25 m. An analysis of the electric conductivity, water table, temperature and water volume data found an effective recharge rate of 68.3%. Results of field monitoring confirmed the accuracy of the numerical simulation and showed that most of the recharged water in the study reach can be effectively recharged into the karst aquifers.
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Dissertations / Theses on the topic "Recharge"

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Konteatis, C. A. C. "Groundwater recharge studies." Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381163.

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Eden, Susanna, and Donald R. Davis. "Deciding to Recharge." Department of Hydrology and Water Resources, University of Arizona (Tucson, AZ), 1999. http://hdl.handle.net/10150/615798.

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Public water policy decision making tends to be too complex and dynamic to be described fully by traditional, rational models. Information intended to improve decisions often is rendered ineffective by a failure to understand the process. An alternative, holistic description of how such decisions actually are made is presented here and illustrated with a case study. The role of information in the process is highlighted. Development of a Regional Recharge Plan for Tucson, Arizona is analyzed as the case study. The description of how decisions are made is based on an image of public water policy decision making as 1) a structured, nested network of individuals and groups with connections to their environment through their senses, mediated by their knowledge; and 2) a nonlinear process in which decisions feed back to affect the preferences and intentions of the people involved, the structure of their interactions, and the environment in which they operate. The analytical components of this image are 1) the decision makers, 2) the relevant features of their environment, 3) the structure of their interactions, and 4) the products or outputs of their deliberations. Policy decisions analyzed by these components, in contrast to the traditional analysis, disclose a new set of relationships and suggest a new view of the uses of information. In context of information use, perhaps the most important output of the decision process is a shared interpretation of the policy issue. This interpretation sets the boundaries of the issue and the nature of issue-relevant information. Participants are unlikely to attend to information incompatible with the shared interpretation. Information is effective when used to shape the issue interpretation, fill specific gaps identified as issue-relevant during the process, rationalize choices, and reshape the issue interpretation as the issue environment evolves.
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Eden, Susanna. "Deciding to Recharge." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/191242.

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Public water policy decision making tends to be too complex and dynamic to be described fully by traditional, rational models. Information intended to improve decisions often is rendered ineffective by a failure to understand the process. An alternative, holistic description of how such decisions actually are made is presented here and illustrated with a case study. The role of information in the process is highlighted. Development of a Regional Recharge Plan for Tucson, Arizona is analyzed as the case study. The description of how decisions are made is based on an image of public water policy decision making as 1) a structured, nested network of individuals and groups with connections to their environment through their senses, mediated by their knowledge; and 2) a nonlinear process in which decisions feed back to affect the preferences and intentions of the people involved, the structure of their interactions, and the environment in which they operate. The analytical components of this image are 1) the decision makers, 2) the relevant features of their environment, 3) the structure of their interactions, and 4) the products or outputs of their deliberations. Policy decisions analyzed by these components, in contrast to the traditional analysis, disclose a new set of relationships and suggest a new view of the uses of information. In context of information use, perhaps the most important output of the decision process is a shared interpretation of the policy issue. This interpretation sets the boundaries of the issue and the nature of issue-relevant information. Participants are unlikely to attend to information incompatible with the shared interpretation. Information is effective when used to shape the issue interpretation, fill specific gaps identified as issue-relevant during the process, rationalize choices, and reshape the issue interpretation as the issue environment evolves.
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Fouty, Suzanne C. "Chloride mass balance as a method for determining long-term groundwater recharge rates and geomorphic-surface stability in arid and semi-arid regions, Whisky Flat and Beatty, Nevada." Thesis, The University of Arizona, 1989. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0098_sip1_w.pdf&type=application/pdf.

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Dowman, Charles E. "Measured temperature profiles to evaluate recharge In the semiarid southwest." Thesis, The University of Arizona, 2002. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0203_sip1_w.pdf&type=application/pdf.

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Schwartz, Benjamin Farley. "Hydrogeophysical quantification of infiltration and recharge through soil-filled sinkholes using Time Domain Reflectometry and Electrical Resistivity Tomography." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/29748.

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This dissertation presents the results of a detailed physical and hydrogeophysical study of two soil-filled sinkholes mantled by ancient New River fluvial terrace deposits. Research was performed at the Virginia Tech Kentland Experimental Farms in Whitethorne, Virginia, USA between fall 2003 and spring 2007, and focused on characterizing infiltration, deep drainage, and recharge through soil-filled sinkholes. Using hydrogeophysical methods, the spatial and temporal distribution of soil moisture was modeled and potential recharge was quantified in two soil-filled sinkholes. Access-tube time domain reflectometry (TDR) was used to derive one-dimensional (1-D) soil moisture profiles. During access-tube installation, 470 soil samples were obtained from depths between 0.3 and to 9.0 m and characterized both physically and chemically. Using these data, a TDR calibration method was developed. Physio-chemical, TDR moisture, and 1-D electrical resistivity tomography (ERT) data were used to derive a numerically optimized form of Archieâ s Law which was used to convert ERT measurements into volumetric soil moisture. These results led to development of 2-D ERT-derived distributions of soil moisture in three transects across the two sinkholes in two terraces. Potential recharge was quantified using time-series ERT data with comparison to modeled cumulative potential evapotranspiration (PET) and cumulative precipitation between May 17 and October 9, 2006. The patterns of ERT-derived potential recharge values compared well with those expected from PET and precipitation data. Over the monitoring period from late spring to early fall during this study, results showed that a period of intense rain followed by a 31-day period of consistent rain, in which the rate of precipitation was equal to or exceeded PET, were the only periods in which significant amounts of potential recharge occurred (from 19 to 31% of cumulative precipitation during the study). Spatial distributions of ERT-derived moisture clearly revealed that significant amounts of infiltration occurred on sinkhole flanks and bottoms. Runoff during periods of intense rain flowed to the topographically lowest point in the sinkholes where it infiltrated and resulted in localized zones of enhanced infiltration and potential recharge to the water table.
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Tubau, Fernández Isabel. "Assessment of groundwater recharge in urban areas." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/392620.

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In the city of Barcelona and the townships situated in the deltaic area of the Besòs River, groundwater is recognized as an aspect of urban water cycle management. There is groundwater seepage into infrastructure and buildings that in turn require drainage, a part of which is introduced into sewage systems. Sensitized by this issue, city councils have had hydrologic studies carried out to analyze its causes and to plan alternative ways of using these resources while reducing treatment costs, and minimizing the impacts that groundwater and drainage have on infrastructure and vice versa. Based on these studies, and starting in 2000 some of this has been used for municipal practices (garden irrigation and street cleaning). Subsequently, due to a drought that affected the region between April 2007 and January 2009, the government entity in charge of Catalonian water sources (ACA) aims to get greater use out of urban groundwater in this area. This requires a comprehensive understanding of the hydrogeological characteristics of the environment, the availability and quality of these resources, and the appropriate tools for proper assessment and management. This has been the framework of this thesis. Recharge is one of the most relevant aspects of water balance in aquifer systems in urban areas. Urbanization of the area alters the natural hydrological cycle and direct water recharge into aquifers by infiltration is reduced. In turn, evapotranspiration decreases and new recharge sources appear. This thesis presents, first, a methodology that allows for the quantifying of variability in space and time of the recharge in urban areas. Potential sources of recharge that have been considered are: (1) direct infiltration from rain and urban runoff, (2) losses from the sewer system, (3) losses from the water supply system, and (4) other specific sources of recharge (i.e. river infiltration, seawater intrusion, etc.). Recharge calculations are initially performed by applying analytical equations under various hypotheses. These results have been evaluated in the hydrogeological context through a numerical model of flow and transport in the whole area of study. Secondly, detection of some substances in groundwater has been analyzed. These substances and their degradation products, potentially present in recharging sources associated with urban environments, belong to so-called 'emerging organic pollutants'. These are organic chemical compounds used in the formulation of daily products for widespread use, such as pharmaceuticals, emulsions, care products and personal hygiene, household and industrial detergents, plastics, pesticides and herbicides, among others. There is relatively little known about these substances¿ introduction to and evolution in the aquifers. Organic pollutants whose evolution and behavior in the groundwater is better understood can be degraded by natural processes controlled mainly by oxidation-reduction reactions. Even in situ stimulation techniques have been developed which are able to accelerate these processes of natural attenuation of contaminated environments. A methodology is presented using an end-member mixing analysis (EMMA) and MIX to compute mixing ratios and identify hydrochemical reactions. The methodology consists of (1) identifying the potential sources of recharge, (2) characterising recharge sources and mixed water samples using hydrogeochemistry, (3) selecting chemical species to be used in the analysis and (4) calculating mixing ratios and when departures from the mixing line exist, identifying hidrochemical processes. This approach has been applied in a pilot area in the Besòs River Delta.
En la ciudad de Barcelona y municipios ubicados sobre los terrenos deltaicos del río Besòs, el agua subterránea es un factor que se tiene en cuenta en la gestión urbana del ciclo del agua. La filtración de aguas subterráneas en edificios e infraestructuras obliga el drenaje de estas aguas, parte de las cuáles son vertidas a la red de alcantarillado. Sensibilizados por esta problemática las administraciones implicadas encargaron estudios hidrogeológicos para analizar las causas y plantear alternativas para el aprovechamiento de estos recursos, reducir los costes del tratamiento, así como minimizar los impactos que las aguas subterráneas y drenajes puedan causar a las infraestructuras y viceversa. A raíz de estos estudios y desde el año 2000, parte de éstas se destinan a usos municipales (riego de jardines y limpieza de calles). Posteriormente y debido a un período de sequía que afectó desde abril de 2007 a enero de 2009, la entidad gestora de los recursos hídricos de Cataluña (Agència Catalana de l'Aigua, ACA) planteó un mayor aprovechamiento de los recursos de agua subterránea en este entorno urbano. Esto requiere un buen conocimiento de las características hidrogeológicas del medio, de la disponibilidad y calidad de estos recursos, así como de disponer de las herramientas adecuadas para su evaluación y correcta gestión. Esta tesis se enmarca en este contexto. La recarga es uno de los aspectos más relevantes del balance hídrico en los sistemas acuíferos de zonas urbanas. La urbanización del territorio altera el ciclo hidrogeológico natural, la recarga directa de agua a los acuíferos por infiltración se reduce, disminuye la evapotranspiración y aparecen nuevas fuentes de recarga. En esta tesis se presenta, en primer lugar, una metodología para cuantificar la variabilidad espacial y temporal de la recarga en zona urbana. Las fuentes potenciales de recarga que se han considerado son: (1) infiltración directa de lluvia y de agua de escorrentía, (2) pérdidas del sistema de alcantarillado, (3) pérdidas de la red de abastecimiento y (4) otras fuentes específicas de recarga como la infiltración de agua de río o la intrusión marina, entre otras. El cálculo de la recarga se ha realizado inicialmente definiendo y aplicando ecuaciones analíticas bajo diversas hipótesis. Estos resultados se han evaluado en el contexto hidrogeológico mediante un modelo numérico de flujo y transporte en toda la zona de estudio. En segundo lugar se analiza la presencia en las aguas subterráneas de algunas sustancias potencialmente presentes en fuentes de recargas asociadas a entornos urbanos, y de las que se tiene relativo poco conocimiento de su introducción y evolución en los acuíferos. Estas substancias o sus productos de degradación pertenecen a los denominados "contaminantes orgánicos emergentes"; se tratan de compuestos químicos orgánicos empleados en la formulación de productos de uso cotidiano y muy extendido, como son productos farmacéuticos, emulsiones, productos para el cuidado e higiene personal, detergentes domésticos e industriales, plásticos, pesticidas y herbicidas, entre otros. Contaminantes orgánicos cuya evolución y comportamiento en las aguas subterráneas es más conocido, pueden degradarse mediante procesos naturales controlados principalmente por procesos de oxidación-reducción. Incluso se han desarrollado técnicas de estimulación in-situ capaces de acelerar estos procesos de atenuación natural sobre medios contaminados. Se presenta una metodología para la evaluación de porcentajes de mezcla e identificación de procesos hidroquímicos. Para ello se emplean procedimientos y herramientas estadísticas. Esta metodología se ha aplicado a las aguas del río Besòs y las aguas subterráneas de una zona piloto en el Delta del Besòs.
En la ciutat de Barcelona i municipis ubicats sobre els terrenys deltaics del riu Besòs, l’aigua subterrània és un factor que es té en compte en la gestió urbana del cicle de l’aigua. La filtració d’aigües subterrànies en edificis i infraestructures obliguen el seu drenatge, una part de les quals s’aboquen a la xarxa de clavegueram. Sensibilitzats per aquesta problemàtica els ajuntaments implicats van encarregar estudis hidrogeològics per analitzar les causes i plantejar alternatives per l’aprofitament d’aquests recursos, reduir els costos del tractament, així com minimitzar els impactes que les aigües subterrànies i drenatges poden causar a les infraestructures i viceversa. A arrel d’aquest estudis i des de l’any 2000, part d’aquestes aigües es destinen a usos municipals (reg de jardins i neteja de carrers). Posteriorment i degut a un període de sequera que va afectar des de l’abril de 2007 fins gener de 2009, l’entitat gestora dels recursos hídrics de Catalunya (Agència Catalana de l’Aigua, ACA) va plantejar un major aprofitament d’aquests recursos d’aigua subterrània en aquest entorn urbà. Això requereix un bon coneixement del medi hidrogeològic, de la disponibilitat i qualitat, així com de les eines adequades per a la seva correcta avaluació i gestió. Aquest és el context en que emmarca aquesta tesis. La recarrega és un dels aspectes més rellevants del balanç hídric en els sistemes aqüífers de zones urbanes. La urbanització del territori altera el cicle hidrogeològic natural, la recàrrega directa d’aigua als aqüífers per infiltració es redueix, disminueix l’evapotranspiració i apareixen noves fonts de recàrrega. En aquesta tesis es presenta, en primer lloc, una metodologia per a quantificar la variabilitat espaial i temporal de la recàrrega en zona urbana. Les fonts potencials de recàrrega que s’han considerat són: (1) infiltració directa de pluja i aigua d’escorrentia, (2) pèrdues del sistema de clavegueram, (3) pèrdues de la xarxa d’abastament i (4) altres fonts específiques de recàrrega com infiltració d’aigua del riu o intrusió marina, entre altres. El càlcul de la recàrrega s’ha realitzat inicialment definint i aplicant equacions analítiques sota diverses hipòtesis. Aquests resultats s’han avaluat en el context hidrogeològic mitjançant un model numèric de flux i transport en tota la zona d’estudi. En segon lloc, també en tota la zona d’estudi, s’analitza la presència en les aigües subterrànies d’algunes substàncies potencialment presents en fonts de recàrrega associades a entorns urbans, i de les que es té relativament poc coneixement de la seva introducció i evolució en els aqüífers. Aquestes substàncies o els seus productes de degradació pertanyen als denominats ‘contaminants orgànics emergents’; es tracten de compostos químics orgànics emprats en la formulació de productes d’ús quotidià i molt estès, com són productes farmacèutics, emulsions, productes per la cura e higiene personal, detergents domèstics i industrials, plàstics, pesticides y herbicides, entre altres. Contaminants orgànics, l’evolució i comportament dels quals en les aigües subterrànies és més conegut, poden degradar-se mitjançant processos naturals controlats principalment per processos d’oxidació-reducció. Inclús s’han desenvolupat tècniques d’estimulació in-situ capaces d’accelerar aquests processos d’atenuació natural sobre medis contaminats. En una línea preliminar de detecció de processos d’atenuació es presenta, en tercer lloc, una metodologia que permet l’avaluació de percentatges de mescla e identificació de processos hidroquímics. Aquesta empra procediments i eines estadístiques. Consisteix en (1) identificació de las potencials fonts de recàrrega, (2) caracterització de les fonts de recàrrega i les mescles d’aigua emprant espècies químiques, (3) selecció de les especies químiques que van a ser emprades en l’anàlisi i (4) càlcul dels percentatges de mescla i identificació de processos hidroquímics d’aquells que es separen de la línea de mescla. Aquesta metodologia s’ha aplicat a les aigües del riu Besòs i les aigües subterrànies d’una zona pilot en el Delta del Besòs.
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Lai, Man-foon Vivian, and 黎萬寬. "Study of vegetation densities on groundwater recharge." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B44570053.

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Cuthbert, Mark. "Hydraulic processes controlling recharge through glacial drift." Thesis, University of Birmingham, 2005. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.762417.

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Chavez, Rodriguez Adolfo 1951. "Modeling mountain-front recharge to regional aquifers." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/191124.

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The estimation of mountain-front recharge to regional aquifers is approached from a hydroclimatic standpoint. Analytical models of the seasonal water yield and streamflow are developed in this dissertation. These models are specialized for hard-rock mountainous watersheds where deep percolation occurs through fractures exclusively. Input variables are considered to be stochastic, and a relationship between precipitation and surface runoff is derived by using a deterministic physical process. Streamflow models for the summer and winter rainy seasons are developed separately in terms of known parameters of the storm process and unknown parameters of the physical process. The winter model considers the generation of surface runoff from both rainfall and snowmelt. These models include the long-term effective subsurface outflow from the mountainous watershed, or mountain-front recharge, as one of the parameters to be identified. The parameter estimation problem is posed in the framework of maximum likelihood theory, where prior information about the model parameters and a suitable weighting scheme for the error terms in the estimation criterion are included. The issues of model and parameter identifiability, uniqueness and stability are addressed, and strategies to mitigate identifiability problems in our modeling are discussed. Finally, the seasonal streamflow models are applied to three mountainous watersheds in the Tucson basin, and maximum likelihood estimates of mountain-front recharge and other model and statistical parameters are obtained. The analysis of estimation errors is performed in both the eigenspace and the original space of the parameters.
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Books on the topic "Recharge"

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Maliva, Robert G. Anthropogenic Aquifer Recharge. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-11084-0.

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1980-, Luthi Morgan, ed. Wall-E: Recharge. Los Angeles, CA: BOOM Kids!, 2010.

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Mahajan, Gautam. Ground water recharge. New Delhi: Ashish Pub. House, 1993.

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R, Scanlon Bridget, ed. Estimating groundwater recharge. Cambridge: Cambridge University Press, 2010.

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Vogt, Jay W. Recharge Your Team. Santa Barbara: ABC-CLIO, 2010.

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Lerner, David. Groundwater recharge: A guide to understanding and estimating natural recharge. Hannover, West Germany: Heise, 1990.

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Everett, Lauren, ed. Groundwater Recharge and Flow. Washington, D.C.: National Academies Press, 2019. http://dx.doi.org/10.17226/25615.

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Takashi, Asano, ed. Artificial recharge of groundwater. Boston: Butterworth, 1985.

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Time to Recharge, Harper! New York: Dial Books, 2021.

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St. Johns River Water Management District (Fla.). Central Florida Aquifer Recharge Enhancement Program: Phase 1-artificial recharge well demonstration project. Palatka, Fla: St. Johns River Water Management, 2006.

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Book chapters on the topic "Recharge"

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Mauser, Wolfram, and Ralf Ludwig. "Groundwater Recharge." In Regional Assessment of Global Change Impacts, 195–200. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-16751-0_24.

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Nimmo, John, David A. Stonestrom, and Richard W. Healy. "Aquifers: Recharge." In Fresh Water and Watersheds, 11–15. Second edition. | Boca Raton: CRC Press, [2020] | Revised edition of: Encyclopedia of natural resources. [2014].: CRC Press, 2020. http://dx.doi.org/10.1201/9780429441042-3.

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Yang, Yuanyuan, and Cong Wang. "Recharge Scheduling." In SpringerBriefs in Electrical and Computer Engineering, 25–42. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17656-7_4.

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Akter, Aysha. "Groundwater Recharge." In Springer Water, 191–214. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94643-2_6.

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Maliva, Robert, and Thomas Missimer. "Wadi Recharge Evaluation." In Arid Lands Water Evaluation and Management, 293–327. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29104-3_13.

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Maliva, Robert, and Thomas Missimer. "Managed Aquifer Recharge." In Arid Lands Water Evaluation and Management, 559–630. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29104-3_23.

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Balek, J. "Groundwater Recharge Concepts." In Estimation of Natural Groundwater Recharge, 3–9. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-015-7780-9_1.

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Spellman, Frank R. "Water Recharge 1." In The Science of Land Subsidence, 210–57. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003461265-18.

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Iwata, Kazuyuki. "Climate Policy in Transportation Sector: Role of Carbon Pricing." In Economics, Law, and Institutions in Asia Pacific, 61–78. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6964-7_4.

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Abstract This chapter focuses on climate countermeasures in the Japanese transport sector. We introduce the Japanese complexed automobile tax system and then calculate the Japanese effective carbon rate (ECR) on automobiles. In addition to the discussion of the ECR, this chapter offers a simple examination of the efficiency of electric vehicles (EVs) from the viewpoint of cost-benefit because it is expected that EVs will become the most popular eco-friendly vehicle in the future. Two remarks are found in our analysis. First, although the carbon tax rate on fuel consumption is small in Japan, compared to the European countries, the ECR is rather high. For further improvement of climate policy, the Japanese government should shift its attention to vehicle usage from vehicle purchase and possession. Second, under the basic assumption (i.e., representative owners do not recharge their EVs at home but at outdoor fast chargers), the diffusion of EVs is not an efficient measure for reducing GHG emissions. If owners recharge their EVs at home once of every two charges, the net benefit becomes positive Therefore, the opportunity cost of waiting for recharges is a key factor in whether EVs can play a role in mitigating climate change.
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Maliva, Robert, and Thomas Missimer. "Recharge Concepts and Settings." In Arid Lands Water Evaluation and Management, 187–208. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29104-3_8.

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Conference papers on the topic "Recharge"

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Wilson, K. D., and M. Tabatabaei. "Minimizing Parent-Child Effect in the Anadarko Basin Through Parent Recharges." In SPE Hydraulic Fracturing Technology Conference and Exhibition. SPE, 2024. http://dx.doi.org/10.2118/217818-ms.

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Abstract Recharging parents has been used as a technique in the Anadarko Basin to mitigate the parent-child effect since 2018. Usually, parent wells either don't return to their pre-infill rate or recover slowly after frac hits. On the other hand, the performance of the child directly adjacent to the parent can be negatively impacted by the presence of the parent and underperform other infills. Recharging a parent prior to completing the children not only can help the parent well recover to its pre-infill rate faster but also can help minimize the parent-child effect and improve the performance of the children, specifically direct offsets. Over time our recharge operations and design parameters have evolved significantly to increase the effectiveness and improve economics of the program. Many trials were performed to identify key design parameters that impact parent recovery post frac-hit. In addition, a robust analysis was done to quantify the effect of recharges on direct offsets. This paper presents several case studies of successful and unsuccessful parent recharges in the Anadarko Basin. We will review candidate selection criterion and discuss key parameters that optimize the recharge program to maximize the effectiveness on parent recovery and minimize the parent effect on the parent adjacent child wells. The key parameters that will be discussed are recharge volume, pump rate, magnitude of pressure depletion, distance between the parent and the direct offset, and completion design.
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Kundu, Tanmoy, and Indranil Saha. "Mobile Recharger Path Planning and Recharge Scheduling in a Multi-Robot Environment." In 2021 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2021. http://dx.doi.org/10.1109/iros51168.2021.9636078.

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Longo, Michela, Dario Zaninelli, Fabio Viola, Pietro Romano, Rosario Miceli, Massimo Caruso, and Filippo Pellitteri. "Recharge stations: A review." In 2016 Eleventh International Conference on Ecological Vehicles and Renewable Energies (EVER). IEEE, 2016. http://dx.doi.org/10.1109/ever.2016.7476390.

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Huang, Yun, and Bradford P. Wilcox. "How Karst Features Affect Recharge? Implication for Estimating Recharge to the Edwards Aquifer." In 10th Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst. Reston, VA: American Society of Civil Engineers, 2005. http://dx.doi.org/10.1061/40796(177)21.

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Carlson, E. S., and J. C. Mercer. "Recharge Models for Devonian Shales." In SPE Eastern Regional Meeting. Society of Petroleum Engineers, 1991. http://dx.doi.org/10.2118/23423-ms.

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Goretti, Michele, Andrea Nicolini, Federico Rossi, and Franco Cotana. "Noise Assessment of Bioethanol Fuelled Hybrid and Electric Postal Vehicles Equipped With a Kinetic Energy Recovery System." In ASME 2012 Noise Control and Acoustics Division Conference at InterNoise 2012. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ncad2012-0292.

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In order to assess the contribution of sustainable mobility to improve environmental conditions in urban areas, new generation hybrid and electric models of mail delivery vehicles are analysed in terms of their noise emissions. Both vehicles use a 10% bioethanol and 90% gasoline mixture (E10) for recharging their batteries and they are equipped with a kinetic energy recovery system (KERS). The difference is the recharge modality: the hybrid vehicle is equipped on board with an E10 fuelled engine for the recharge of its electric batteries while the electric vehicle may be recharged by an E10 engine installed on a specific station (engine is not on board). The aims of the present paper are to carry out objective noise measurements representing realistic urban driving conditions and to compare the noise emissions of the tested vehicles with the ones of traditional postal vehicles. Vehicle sound pressure levels are evaluated according to the international standard ISO 362-1 and the UN/ECE Regulation n. 51 and they reflect a representative combination of all major noise sources. SEL measurements are also analysed as an alternative assessment of noise due to accelerating postal vehicles in actual traffic conditions. Finally all results are compared and their contribution to optimize vehicle noise emission is analysed.
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Sánchez-Murillo, Ricardo. "Tracer hydrology of the data-scarce and heterogeneous Central American Isthmus." In I Congreso Internacional de Ciencias Exactas y Naturales. Universidad Nacional, 2019. http://dx.doi.org/10.15359/cicen.1.36.

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Numerous socio-economic activities depend on the seasonal rainfall and groundwater recharge cycle across the Central American Isthmus. Population growth and unregulated land use changes resulted in extensive surface water pollution and a large dependency on groundwater resources. This chapter uses stable isotope variations in rainfall, surface water, and groundwater of Costa Rica, Nicaragua, El Salvador, and Honduras to develop a regionalized rainfall isoscape, isotopic lapse rates, spatial-temporal isotopic variations, and air mass back trajectories determining potential mean recharge elevations, moisture circulation patterns, and surface water-groundwater interactions. Intra-seasonal rainfall modes resulted in two isotopically depleted incursions (W-shaped isotopic pattern) during the wet season and two enriched pulses during the Mid-Summer Drought and the months of the strongest trade winds. Notable isotopic sub-cloud fractionation and near-surface secondary evaporation were identified as common denominators within the Central American Dry Corridor. Groundwater and surface water isotope ratios depicted the strong orographic separation into the Caribbean and Pacific domains, mainly induced by the governing moisture transport from the Caribbean Sea, complex rainfall producing systems across the N-S mountain range, and the subsequent mixing with local evapotranspiration, and, to a lesser degree, the eastern Pacific Ocean fluxes. Groundwater recharge was characterized by a) depleted recharge in highland areas (72.3%), b) rapid recharge via preferential flow paths (13.1%), and enriched recharge due to near-surface secondary fractionation (14.6%). Median recharge elevation ranged from 1,104 to 1,979 m a.s.l. These results are intended to enhance forest conservation practices, inform water protection regulations, and facilitate water security and sustainability planning in the Central American Isthmus.
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Chowdhury, Sujan, Prithwi Raj Chakraborty, Alok Kumar Chowdhury, and Md Liaz Mahamud Lemon. "Automated recharge of prepaid mobile phones." In 2012 15th International Conference on Computer and Information Technology (ICCIT). IEEE, 2012. http://dx.doi.org/10.1109/iccitechn.2012.6509779.

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Charan, Ankit Kumar, Shreyanjit Gupta, Sayanti Sarkar, Sayan Mitra, and Subhabrata Banerjee. "IoT based Domestic Water Recharge System." In 2020 Third International Conference on Smart Systems and Inventive Technology (ICSSIT). IEEE, 2020. http://dx.doi.org/10.1109/icssit48917.2020.9214169.

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Allotta, Benedetto, Luca Pugi, Alberto Reatti, and Fabio Corti. "Wireless power recharge for underwater robotics." In 2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe). IEEE, 2017. http://dx.doi.org/10.1109/eeeic.2017.7977478.

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Reports on the topic "Recharge"

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Paradis, D., and N. Benoit. Groundwater recharge. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2016. http://dx.doi.org/10.4095/298883.

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Cuddy, S. Recharge offsetting - maintaining recharge in an urban environment. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2017. http://dx.doi.org/10.4095/299766.

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Allen, D. M. Recharge and climate. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2014. http://dx.doi.org/10.4095/296936.

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Kirby, Stefan M., J. Lucy Jordan, Janae Wallace, Nathan Payne, and Christian Hardwick. Hydrogeology and Water Budget for Goshen Valley, Utah County, Utah. Utah Geological Survey, November 2022. http://dx.doi.org/10.34191/ss-171.

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Goshen Valley contains extensive areas of agriculture, significant wetlands, and several small municipalities, all of which rely on both groundwater and surface water. The objective of this study is to characterize the hydrogeology and groundwater conditions in Goshen Valley and calculate a water budget for the groundwater system. Based on the geologic and hydrologic data presented in this paper, we delineate three conceptual groundwater zones. Zones are delineated based on areas of shared hydrogeologic, geochemical, and potentiometric characteristics within the larger Goshen Valley. Groundwater in Goshen Valley resides primarily in the upper basin fill aquifer unit (UBFAU) and lower carbonate aquifer unit (LCAU) hydrostratigraphic units. Most wells in Goshen Valley are completed in the UBFAU, which covers much of the valley floor. The UBFAU is the upper part of the basin fill, which is generally less than 1500 feet thick in Goshen Valley. Important spring discharge at Goshen Warm Springs issues from the LCAU. Relatively impermeable volcanic rocks (VU) occur along much of the upland parts of the southern part of Goshen Valley. Large sections of the southwest part of the Goshen Valley basin boundary have limited potential for interbasin flow. Interbasin groundwater flow is likely at several locations including the Mosida Hills and northern parts of Long Ridge and Goshen Gap in areas underlain by LCAU. Depth to groundwater in Goshen Valley ranges from at or just below the land surface to greater than 400 feet. Groundwater is within 30 feet of the land surface near and north of Goshen, in areas of irrigated pastures and wetlands that extend east toward Long Ridge and Goshen Warm Springs, and to the north towards Genola. Groundwater movement is from upland parts of the study area toward the valley floor and Utah Lake. Long-term water-level change is evident across much of Goshen Valley, with the most significant decline present in conceptual zone 2 and the southern part of conceptual zone 1. The area of maximum groundwater-level decline—over 50 feet—is centered a few miles south of Elberta in conceptual zone 2. Groundwater in Goshen Valley spans a range of chemistries that include locally high total dissolved solids and elevated nitrate and arsenic concentrations and varies from calcium-bicarbonate to sodium-chloride-type waters. Overlap in chemistry exists in surface water samples from Currant Creek, the Highline Canal, and groundwater. Stable isotopes indicate that groundwater recharges from various locations that may include local recharge, from the East Tintic Mountains, or far-traveled groundwater recharged either in Cedar Valley or east of the study area along the Wasatch Range. Dissolved gas recharge temperatures support localized recharge outside of Goshen. Most groundwater samples in Goshen Valley are old, with limited evidence of recent groundwater recharge. An annual water budget based on components of recharge and discharge yields total recharge of 32,805 acre-ft/yr and total discharge of 35,750 acre-ft/yr. Most recharge is likely from interbasin flow and lesser amounts from precipitation and infiltration of surface water. Most discharge is from well water withdrawal with minor spring discharge and groundwater evapotranspiration. Water-budget components show discharge is greater than recharge by less than 3000 acreft/yr. This deficit or change in storage is manifested as longterm water-level decline in conceptual zone 2, and to a lesser degree, in conceptual zone 1. The primary driver of discharge in conceptual zone 2 is well withdrawal. Conceptual zone 3 is broadly in balance across the various sources of recharge and discharge, and up to 1830 acre-ft/yr of water may discharge from conceptual zone 3 into Utah Lake. Minimal groundwater likely flows to Utah Lake from zones 1 or 2.
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5

Stone, William J. Phase III--Recharge study at the Navajo mine--Impact of mining on recharge. New Mexico Bureau of Geology and Mineral Resources, 1987. http://dx.doi.org/10.58799/ofr-282.

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6

Fan, Mingyuan. Managed Aquifer Recharge in Mongolia: Policy Recommendations and Lessons Learned from Pilot Applications. Asian Development Bank, October 2023. http://dx.doi.org/10.22617/brf230405-2.

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This brief shares lessons from pilot projects to replenish Mongolia’s aquifers to help offset rising demand for water as climate change threatens to worsen shortages. It notes that Mongolia relies on groundwater for 90% of its water supplies and assesses three managed aquifer recharge (MAR) projects. These rely either on injection wells, surface water spreading, or enhancing natural recharge processes. It recommends Mongolia continues researching managed aquifer recharge, and shows how technical, institutional, and financial support could help harness MAR’s potential to provide vital solutions for water-scarce areas.
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7

Scanlon, B. R., R. C. Reedy, and J. Liang. Recharge monitoring in an interplaya setting. Office of Scientific and Technical Information (OSTI), March 1999. http://dx.doi.org/10.2172/334236.

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8

Ziari, Fred. Echo Meadows Project Winter Artificial Recharge. Office of Scientific and Technical Information (OSTI), December 2002. http://dx.doi.org/10.2172/819758.

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9

Gee, G. W. Recharge at the Hanford Site: Status report. Office of Scientific and Technical Information (OSTI), November 1987. http://dx.doi.org/10.2172/5539519.

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10

Fayer, M. J., and T. B. Walters. Estimated recharge rates at the Hanford Site. Office of Scientific and Technical Information (OSTI), February 1995. http://dx.doi.org/10.2172/10122247.

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