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Spatial And Temporal Dynamics Of Surface Water Groundwater Interactions Using Time Series Analysis Of Streambed Thermal Records In Coastal Streams
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Book Synopsis Spatial and Temporal Dynamics of Surface Water-groundwater Interactions Using Time-series Analysis of Streambed Thermal Records in Coastal Streams by : Christine E. Hatch
Download or read book Spatial and Temporal Dynamics of Surface Water-groundwater Interactions Using Time-series Analysis of Streambed Thermal Records in Coastal Streams written by Christine E. Hatch and published by . This book was released on 2007 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Groundwater-Surface Water Interactions by : Habil. Jörg Lewandowski
Download or read book Groundwater-Surface Water Interactions written by Habil. Jörg Lewandowski and published by MDPI. This book was released on 2020-12-10 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent years have seen a paradigm shift in our understanding of groundwater–surface water interactions: surface water and aquifers were long considered discrete, separate entities; they are now understood as integral components of a surface–subsurface continuum. This book provides an overview of current research advances and innovative approaches in groundwater–surface water interactions. The 20 research articles and 1 communication cover a wide range of thematic scopes, scales, and experimental and modelling methods across different disciplines (hydrology, aquatic ecology, biogeochemistry, and environmental pollution). The book identifies current knowledge gaps and reveals the challenges in establishing standardized measurement, observation, and assessment approaches. It includes current hot topcis with environmental and societal relevance such as eutrophication, retention of legacy, and emerging pollutants (e.g., pharmaceuticals and microplastics), urban water interfaces, and climate change impacts. The book demonstrates the relevance of processes at groundwater–surface water interfaces for (1) regional water balances and (2) quality and quantity of drinking water resources. As such, this book represents the long-awaited transfer of the above-mentioned paradigm shift in understanding of groundwater–surface water interactions from science to practice.
Book Synopsis Groundwater - Vegetation - Atmosphere Interactions in an Intertidal Salt Marsh by : Kevan Bauer Moffett
Download or read book Groundwater - Vegetation - Atmosphere Interactions in an Intertidal Salt Marsh written by Kevan Bauer Moffett and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A large fraction of coastal wetlands worldwide have been severely impacted by development, resulting in among the highest losses of any wetland type. Necessary improvements in restoration and management of coastal wetlands require a better scientific understanding of the underlying plant-water interactions, or ecohydrology. This research developed a new conceptual model of intertidal salt marsh ecohydrology to define the relative roles of: tidal flooding, groundwater flow, vegetation zonation, and plant water uptake. Spatial and temporal variations in plant-water interactions were observed over three years at a field site in the Palo Alto Baylands, California. Three-dimensional numerical simulations of the coupled surface water and unsaturated groundwater flow and evapotranspiration (ET) at the site were used to explore the links between marsh vegetation and hydrology. /// Vegetation zonation is one of the most distinctive properties of salt marshes, yet had not been combined with physics-based hydrologic analysis prior to this research. Statistical analysis showed that vegetation zones at the field site were not correlated with traditional proxies for hydrologic influences such as elevation and distance-to-channel. Vegetation zonation was strongly correlated with a metric describing the spatial patterns of tidally-induced changes in salt marsh soil saturation and salinity. This metric was developed based on time-lapse imaging of bulk soil electrical conductivity and a new geophysical analysis method, Quantitative Differential Electromagnetic Induction imaging (Q-DEMI). /// Spatial variations in vegetation water use within and among vegetation zones were investigated in detail using centimeter-resolution thermal infrared (TIR) remote sensing. Well-established latent heat models were adapted to use spatially-variable canopy stomatal resistances. The detailed stomatal resistance maps were determined from the TIR data in a biophysically realistic manner by a new method. In principle, the stomatal resistance mapping method is applicable at scales from leaves (such as in this study) to landscapes. /// The dynamics of plant-water interactions originating at the leaf scale were also detectable in marsh-scale eddy covariance and meteorological field data. Alternating daytime tidal flooding and exposure shifted the marsh surface energy balance: from similar to a well-watered lawn during flooding, to similar to a sparse crop during exposure. The net ecosystem exchange of carbon dioxide was also temporarily suppressed in proportion to flood depth and duration, further indicating close plant-water coupling in the intertidal salt marsh environment. /// These spatial and temporal plant-water interactions occur within a larger context governed by the tidal regime and coastal groundwater flow. Continuous measurements of groundwater potential characterized marsh groundwater dynamics and provided evidence of sediment heterogeneity at the field site. In three dimensional, coupled groundwater-surface water simulations, the sediment heterogeneity affected both the balance between creek bank and interior marsh hydrologic processes and the spatial distribution of groundwater-surface water exchange. In the field, similar groundwater discharge zones were located in the tidal channels by fiber-optic distributed temperature sensing (DTS). The DTS data also provided the first description of the salt marsh benthic thermal regime, a system co-dominated by groundwater discharge and an ephemeral "tidal thermal blanket." /// Spatial variability in ET and rooting depth due to vegetation zonation were incorporated into a numerical model to represent the ecohydrologic system. The zonally-distributed ET and rooting depths caused notable spatial variations in hydrologic conditions in the marsh root zone, including significant variations in unsaturated pressure head and soil saturation. Modest control of salt marsh water table depth by vegetation following flooding tides was simulated throughout the field site, in accord with the prevailing conceptual model of salt marsh plant-water interactions. The simulations also suggested four additional classes of ecohydrologic dynamics apparent under conditions of prolonged marsh exposure. The four new classes of ecohydrological behavior were distinguished by combinations of relatively high or low soil permeability and high or low ET rate. Together, patterns in vegetation and soil permeability thus created distinctive "ecohydrological zones." In some cases, the contrast among such ecohydrological zones caused upward and downward groundwater flow regions to be spatially juxtaposed, suggesting future research into soil biogeochemistry at these sites may be interesting. /// In summary, a new conceptual model of salt marsh ecohydrology is based on a definition of "ecohydrological zones" as the relevant unit of structure and function within the salt marsh ecohydrological system. Distinctive ecohydrological zones are created by hydraulic interactions between groundwater, vegetation, and the atmosphere. The specific nature of each zone depends both on the soil hydraulic properties resulting from the local geomorphological history and on the plant water uptake and transpiration governed by each plant species' unique physiology. The set of ecohydrological zones within a salt marsh are nested, in turn, within a coarser hydrologic system structure imposed by the tidal regime and larger intertidal groundwater flow system.
Book Synopsis Heat as a Tool for Studying the Movement of Ground Water Near Streams by : David Arthur Stonestrom
Download or read book Heat as a Tool for Studying the Movement of Ground Water Near Streams written by David Arthur Stonestrom and published by . This book was released on 2003 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Handbook of Groundwater Engineering by : John H. Cushman
Download or read book The Handbook of Groundwater Engineering written by John H. Cushman and published by CRC Press. This book was released on 2016-11-25 with total page 1092 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition adds several new chapters and is thoroughly updated to include data on new topics such as hydraulic fracturing, CO2 sequestration, sustainable groundwater management, and more. Providing a complete treatment of the theory and practice of groundwater engineering, this new handbook also presents a current and detailed review of how to model the flow of water and the transport of contaminants both in the unsaturated and saturated zones, covers the protection of groundwater, and the remediation of contaminated groundwater.
Book Synopsis Chemical Export to River Systems from the Critical Zone by : Carl I. Steefel
Download or read book Chemical Export to River Systems from the Critical Zone written by Carl I. Steefel and published by Frontiers Media SA. This book was released on 2021-11-30 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determining the Spatial Distribution of Groundwater and Surface Water Exchange Using Heat as a Tracer℗ by : Jeremy Crowley
Download or read book Determining the Spatial Distribution of Groundwater and Surface Water Exchange Using Heat as a Tracer℗ written by Jeremy Crowley and published by . This book was released on 2012 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: The magnitude, location, and timing of groundwater and surface water (GWSW) interaction (both as groundwater discharge and hyporheic cycling) in streams have implications stream ecosystems, nutrient and contaminant reactions, and stream restoration work. In many areas of the world, high phosphorus and nitrate agricultural runoff is a large threat to water quality. The study location, Elton Creek in Cattaraugus County, NY, is located in glacial outwash sediments and is typical of streams in the Great Lakes watershed. We evaluate four general controls of the indicators (stream morphology, stream gradient, bank slope, and in-stream features) of groundwater/surface water (GWSW) interaction using an analytical GIS model of groundwater discharge.^In order to identify locations of GWSW interaction along a 500 m stream reach, a variety of methods were used (including differential streamflow gaging, solute tracers (or channel water balance), and distributed temperature sensor (DTS) monitoring. . A GIS analytical model based on the superimposed indicators was compared to the DTS standard deviation in stream temperature derived gaining and losing portions of the stream. The relative correlation of the individual indicators with groundwater discharge areas was identified for the studied section. It was found that the superposition of indicators was able to delineate areas of groundwater discharge with increasing accuracy. The GIS model of the mapped locations of superimposed indicators is expected to be applicable in a wide range of stream systems to locate areas of potential groundwater discharge, groundwater contaminant discharge, and biogeochemical hotspots.^In addition to identifying the spatial location of groundwater discharge we applied a coupled heat/mass balance model to DTS stream temperature to determine the location and magnitude of groundwater discharge at high spatial resolution. Previous studies using heat/mass balance modeling of GWSW interaction have either averaged temperature over time and distance, or used multiple parameters which are difficult to quantify. We used a simple heat/mass balance model to determine high spatiotemporal resolution groundwater discharge from DTS stream temperature. A rating curve was developed establishing the relationship between head and stream discharge at cross sections using stilling wells with pressure transducers. The upstream discharge was used as the initial condition (for each time step) to model the groundwater discharge at the study location. Additional downstream discharges were used to determine the effectiveness of the model to predict stream discharge.^In this case, it was found that the measurement error in temperature and stream discharge was greater than the variation in predicted downstream streamflow. In addition, the volume of groundwater discharge was not substantial enough to significantly evaluate the model prediction. We suggest that this methodology would be more appropriately applied in shallow streams, with known significant groundwater inputs, and dynamic stream discharge over the studied section.
Book Synopsis Groundwater-surface Water Interaction by : Corinna Abesser
Download or read book Groundwater-surface Water Interaction written by Corinna Abesser and published by . This book was released on 2008 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected papers from a symposium on A new Focus on Integrated Analysis of Groundwater-Surface Water Systems, held during the International Union of Geodesy and Geophysics XXIV General Assembly in Perugia, Italy, 11-13 July 2007.
Book Synopsis Assessment of Spatiotemporal Variations of Groundwater Levels in the Platte River Basin Using Data Mining by : Astha Bista
Download or read book Assessment of Spatiotemporal Variations of Groundwater Levels in the Platte River Basin Using Data Mining written by Astha Bista and published by . This book was released on 2019 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid population growth and climate variability have been posing pressure on groundwater management, especially in regions dominated by irrigation agriculture. Effective management practices require a better understanding of groundwater dynamics and its contributing factors, such as recharge, groundwater-surface water interactions, soil and unsaturated zone characteristics. Although groundwater models can provide valuable insights into these questions, these models are often nonexistent or cost prohibitive. The purpose of this study is to use a data-driven approach to understand the spatiotemporal dynamics of groundwater level observations. Using the Platte River Basin in Nebraska as the study area, I examined explanatory factors (e.g. precipitation, pumping and streamflow) that may be associated with the dynamics of groundwater table using data mining techniques. Groundwater level data from 14 wells during the time period of 2000-2018 was used for this study. Two different approaches for examining the spatial and temporal datasets were employed and compared. In the first approach, I used the principal component analysis (PCA) and a cluster analysis to group the wells into three different clusters. A cross-correlation analysis was then used to associate the clusters with explanatory variables. In the second approach, I used multivariate singular spectrum analysis (MSSA) to decompose the time series into three components, including trends, seasonal and other oscillatory signals. Then a time series clustering method was adopted to divide the wells into different groups. The oscillatory signals from the MSSA and time-series clustering were used to examine temporal dynamics of each group of wells. Both approaches were found to be useful in understanding the spatial pattern and explanatory factors influencing the groundwater level variations. The spatiotemporal variations in groundwater levels in the Platte River Basin were found to be influenced by groundwater pumping, natural recharge and hydrological connection with the Platte River and its tributaries in varying degrees. This study shows that data mining is a useful tool to understand groundwater resource dynamics.
Book Synopsis Field Techniques for Estimating Water Fluxes Between Surface Water and Ground Water by : Donald O. Rosenberry
Download or read book Field Techniques for Estimating Water Fluxes Between Surface Water and Ground Water written by Donald O. Rosenberry and published by CreateSpace. This book was released on 2014-06-16 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in the use and development of our Nation's surface - and ground-water resources has increased significantly during the past 50 years. This work discusses field techniques for estimating water fluxes.
Book Synopsis Temporal and Spatial Analysis of Stream and Groundwater Interactions by : Ryan Eugene Warden
Download or read book Temporal and Spatial Analysis of Stream and Groundwater Interactions written by Ryan Eugene Warden and published by . This book was released on 2011 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrologic Time Series Analysis by : Deepesh Machiwal
Download or read book Hydrologic Time Series Analysis written by Deepesh Machiwal and published by Springer Science & Business Media. This book was released on 2012-03-05 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a dearth of relevant books dealing with both theory and application of time series analysis techniques, particularly in the field of water resources engineering. Therefore, many hydrologists and hydrogeologists face difficulties in adopting time series analysis as one of the tools for their research. This book fills this gap by providing a proper blend of theoretical and practical aspects of time sereies analysis. It deals with a comprehensive overview of time series characteristics in hydrology/water resources engineering, various tools and techniques for analyzing time series data, theoretical details of 31 available statistical tests along with detailed procedures for applying them to real-world time series data, theory and methodology of stochastic modelling, and current status of time series analysis in hydrological sciences. In adition, it demonstrates the application of most time series tests through a case study as well as presents a comparative performance evaluation of various time series tests, together with four invited case studies from India and abroad. This book will not only serve as a textbook for the students and teachers in water resources engineering but will also serve as the most comprehensive reference to educate researchers/scientists about the theory and practice of time series analysis in hydrological sciences. This book will be very useful to the students, researchers, teachers and professionals involved in water resources, hydrology, ecology, climate change, earth science, and environmental studies.
Book Synopsis Spatial and Temporal Dynamics of In-stream Temperature in the Beaverkill Watershed by : Beth Gardner
Download or read book Spatial and Temporal Dynamics of In-stream Temperature in the Beaverkill Watershed written by Beth Gardner and published by . This book was released on 2002 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Time Series Modelling of Water Resources and Environmental Systems by : K.W. Hipel
Download or read book Time Series Modelling of Water Resources and Environmental Systems written by K.W. Hipel and published by Elsevier. This book was released on 1994-04-07 with total page 1053 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a comprehensive presentation of the theory and practice of time series modelling of environmental systems. A variety of time series models are explained and illustrated, including ARMA (autoregressive-moving average), nonstationary, long memory, three families of seasonal, multiple input-single output, intervention and multivariate ARMA models. Other topics in environmetrics covered in this book include time series analysis in decision making, estimating missing observations, simulation, the Hurst phenomenon, forecasting experiments and causality. Professionals working in fields overlapping with environmetrics - such as water resources engineers, environmental scientists, hydrologists, geophysicists, geographers, earth scientists and planners - will find this book a valuable resource. Equally, environmetrics, systems scientists, economists, mechanical engineers, chemical engineers, and management scientists will find the time series methods presented in this book useful.
Book Synopsis Spatiotemporal Analysis of Extreme Hydrological Events by : Gerald Corzo
Download or read book Spatiotemporal Analysis of Extreme Hydrological Events written by Gerald Corzo and published by Elsevier. This book was released on 2018-11-20 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatio-temporal Analysis of Extreme Hydrological Events offers an extensive view of the experiences and applications of the latest developments and methodologies for analyzing and understanding extreme environmental and hydrological events. The book addresses the topic using spatio-temporal methods, such as space-time geostatistics, machine learning, statistical theory, hydrological modelling, neural network and evolutionary algorithms. This important resource for both hydrologists and statisticians interested in the framework of spatial and temporal analysis of hydrological events will provide users with an enhanced understanding of the relationship between magnitude, dynamics and the probability of extreme hydrological events. Presents spatio-temporal processes, including multivariate dynamic modelling Provides varying methodological approaches, giving the readers multiple hydrological modelling information to use in their work Includes a variety of case studies making the context of the book relatable to everyday working situations
Book Synopsis Impacts of Three-Dimensional Non-Uniform Groundwater Flows for Quantifying Groundwater-Surface Water Interactions Using Heat as a Tracer by : Jonathan M. Reeves
Download or read book Impacts of Three-Dimensional Non-Uniform Groundwater Flows for Quantifying Groundwater-Surface Water Interactions Using Heat as a Tracer written by Jonathan M. Reeves and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat-as-a-tracer has become a common method to quantify surface water-groundwater interactions (SW/GW). However, the method relies on a number of assumptions that are likely violated in natural systems. Numerical studies have explored the effects of violating these fundamental assumptions to various degrees, such as heterogeneous streambed properties, two-dimensional groundwater flow fields and uncertainty in thermal parameters for the 1-dimensional heat-as-a-tracer method. No work to date has addressed the impacts of non-uniform, three-dimensional groundwater flows on the use of heat-as-a-tracer to quantify SW/GW interactions. Synthetic temperature time series were generated using COMSOL Multiphysics for a three-dimensional cube designed to represent a laboratory setup of homogeneous, isotropic sand with a sinusoidal temperature variation applied to the top. We compare temperature-derived fluxes to model-generated fluxes to assess the performance of methods using temperature to quantify 1D vertical fluxes in response to multi-dimensional groundwater flows. Both increasingly non-uniform and non-vertical groundwater flow fields result in increasing errors for both amplitude-ratio-derived groundwater flux and temperature-derived effective thermal diffusivity. For losing flow geometries, errors in temperature-derived effective thermal diffusivity are highly correlated with errors in temperature-derived flux and can be used to identify if underlying assumptions necessary for heat-as-a-tracer for quantifying groundwater flows have been violated. For this model set-up, when groundwater flows are non-uniform, the thermal method generally calculates fluxes outside the range occurring between temperature sensor pairs. When errors are low (15% of flux calculations), temperature derived fluxes more closely match the minimum magnitude flow occurring between the sensors.
Download or read book Hydrogeophysics written by Yorum Rubin and published by Springer Science & Business Media. This book was released on 2006-05-06 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: This ground-breaking work is the first to cover the fundamentals of hydrogeophysics from both the hydrogeological and geophysical perspectives. Authored by leading experts and expert groups, the book starts out by explaining the fundamentals of hydrological characterization, with focus on hydrological data acquisition and measurement analysis as well as geostatistical approaches. The fundamentals of geophysical characterization are then at length, including the geophysical techniques that are often used for hydrogeological characterization. Unlike other books, the geophysical methods and petrophysical discussions presented here emphasize the theory, assumptions, approaches, and interpretations that are particularly important for hydrogeological applications. A series of hydrogeophysical case studies illustrate hydrogeophysical approaches for mapping hydrological units, estimation of hydrogeological parameters, and monitoring of hydrogeological processes. Finally, the book concludes with hydrogeophysical frontiers, i.e. on emerging technologies and stochastic hydrogeophysical inversion approaches.
