Journal ArticleDOI
Hyporheic flow and transport processes: Mechanisms, models, and biogeochemical implications
Fulvio Boano,Judson W. Harvey,Andrea Marion,Aaron I. Packman,Roberto Revelli,Luca Ridolfi,Anders Wörman +6 more
TLDR
In this paper, a review summarizes results from modeling studies and field observations about flow and transport processes in the hyporheic zone and describes the theories proposed in hydrology and fluid dynamics developed to quantitatively model and predict the hypheic transport of water, heat, and dissolved and suspended compounds from sediment grain scale up to watershed scale.Abstract:
Fifty years of hyporheic zone research have shown the important role played by the hyporheic zone as an interface between groundwater and surface waters. However, it is only in the last two decades that what began as an empirical science has become a mechanistic science devoted to modeling studies of the complex fluid dynamical and biogeochemical mechanisms occurring in the hyporheic zone. These efforts have led to the picture of surface-subsurface water interactions as regulators of the form and function of fluvial ecosystems. Rather than being isolated systems, surface water bodies continuously interact with the subsurface. Exploration of hyporheic zone processes has led to a new appreciation of their wide reaching consequences for water quality and stream ecology. Modern research aims toward a unified approach, in which processes occurring in the hyporheic zone are key elements for the appreciation, management, and restoration of the whole river environment. In this unifying context, this review summarizes results from modeling studies and field observations about flow and transport processes in the hyporheic zone and describes the theories proposed in hydrology and fluid dynamics developed to quantitatively model and predict the hyporheic transport of water, heat, and dissolved and suspended compounds from sediment grain scale up to the watershed scale. The implications of these processes for stream biogeochemistry and ecology are also discussed.read more
Citations
More filters
Journal ArticleDOI
The ecology and biogeochemistry of stream biofilms
TL;DR: The ecology and biogeochemistry of stream biofilms are described and the influence of physical and ecological processes on their structure and function are highlighted.
Journal ArticleDOI
River corridor science: Hydrologic exchange and ecological consequences from bedforms to basins
TL;DR: In this article, the authors propose river corridor science as a concept that integrates downstream transport with lateral and vertical exchange across interfaces, and include the main channel exchange with recirculating marginal waters, hyporheic exchange, bank storage, and overbank flow onto floodplains under a broad continuum of interactions known as hydrologic exchange flows.
Journal ArticleDOI
Denitrification in the Mississippi River network controlled by flow through river bedforms
TL;DR: This article showed that denitrification due to flow through small-scale river bed-forms exceeds that along channel banks in the Mississippi River network, which is the largest river in the US.
Journal ArticleDOI
Groundwater–surface water mixing shifts ecological assembly processes and stimulates organic carbon turnover
James C. Stegen,James K. Fredrickson,Michael J. Wilkins,Allan E. Konopka,William C. Nelson,Evan V. Arntzen,William B. Chrisler,Rosalie K. Chu,Robert E. Danczak,Sarah J. Fansler,David W. Kennedy,Charles T. Resch,Malak M. Tfaily +12 more
TL;DR: In this paper, the coupling among groundwater-surface water mixing, microbial communities and biogeochemistry was investigated using DNA sequencing and ultra-high-resolution organic carbon profiling to investigate the coupling between groundwater and surface water mixing in the hyporheic zone.
Journal ArticleDOI
Expanding the role of reactive transport models in critical zone processes
Li Li,Kate Maher,Alexis Navarre-Sitchler,Jennifer L. Druhan,Christof Meile,Corey R. Lawrence,Joel Moore,Julia Perdrial,Pamela L. Sullivan,Aaron Thompson,Lixin Jin,Edward W. Bolton,Susan L. Brantley,William E. Dietrich,K. Ulrich Mayer,Carl I. Steefel,Albert J. Valocchi,John M. Zachara,Benjamin D. Kocar,Jennifer C. McIntosh,Benjamin M. Tutolo,Mukesh Kumar,Eric Sonnenthal,Chen Bao,Joe Beisman +24 more
TL;DR: A review of multi-component Reactive Transport Models (RTMs) can be found in this article, where the authors present seven testable hypotheses that emphasize the unique capabilities of process-based RTMs for elucidating chemical weathering and its physical and biogeochemical drivers; understanding the interactions among roots, micro-organisms, carbon, water, and minerals in the rhizosphere; assessing the effects of heterogeneity across spatial and temporal scales; and integrating the vast quantity of novel data (genomics, transcriptomics, proteomics, metabolomics), elemental concentration and speciation
References
More filters
Book
The Fractal Geometry of Nature
TL;DR: This book is a blend of erudition, popularization, and exposition, and the illustrations include many superb examples of computer graphics that are works of art in their own right.
Journal ArticleDOI
The River Continuum Concept
TL;DR: It is hypothesized that producer and consumer communities characteristic of a given river reach become established in harmony with the dynamic physical conditions of the channel.
Journal ArticleDOI
The random walk's guide to anomalous diffusion: a fractional dynamics approach
Ralf Metzler,Joseph Klafter +1 more
TL;DR: Fractional kinetic equations of the diffusion, diffusion-advection, and Fokker-Planck type are presented as a useful approach for the description of transport dynamics in complex systems which are governed by anomalous diffusion and non-exponential relaxation patterns.
Journal ArticleDOI
Über die von der molekularkinetischen Theorie der Wärme geforderte Bewegung von in ruhenden Flüssigkeiten suspendierten Teilchen
TL;DR: In el marco del Proyecto subvencionado by the Fundación Antorchas (FAN) as discussed by the authors, el material was digitalizado, e.g., en la Biblioteca del Departamento de Fisica de la Facultad de Ciencias Exactas de la Universidad Nacional de La Plata.
Journal ArticleDOI
Lattice boltzmann method for fluid flows
Shiyi Chen,Gary D. Doolen +1 more
TL;DR: An overview of the lattice Boltzmann method, a parallel and efficient algorithm for simulating single-phase and multiphase fluid flows and for incorporating additional physical complexities, is presented.