Sedimentation In The New River Estuary
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Sedimentation In The New River Estuary
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Author : Robert John Blakely
language : en
Publisher:
Release Date : 1973
Sedimentation In The New River Estuary written by Robert John Blakely and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Estuarine sediments categories.
Sedimentation In The New River Estuary Southland
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Author : Martin C. Thoms
language : en
Publisher:
Release Date : 1981
Sedimentation In The New River Estuary Southland written by Martin C. Thoms and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with categories.
Sedimentation In The New River Estuary
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Author : Robert John Blakely
language : en
Publisher:
Release Date : 1973
Sedimentation In The New River Estuary written by Robert John Blakely and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Estuarine sediments categories.
Clifton Wastewater Treatment Plant Discharge
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Author : Barry M. Robertson
language : en
Publisher:
Release Date : 2013
Clifton Wastewater Treatment Plant Discharge written by Barry M. Robertson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with New River Esturary (Invercargill, N.Z.) categories.
"This report summarises the results of the third year of baseline estuary sediment consent monitoring undertaken by the Invercargill City Council (ICC) as a condition of their resource consent to discharge treated wastewater to the New River Estuary adjacent to the Clifton wastewater treatment plant. ... Management focus should be on continuing to maintain a stable and well-treated effluent that meets estuary guidelines for the main estuary issues of sedimentation, eutrophication, disease risk, toxicity, and habitat loss."--P. vii.
Geochemistry And Isotopic Composition Of Sediment Cores To Understand The Lithological And Anthropogenic Controls On Eutrophication In The New River Estuary Southland New Zealand
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Author : Danielle J. Brown
language : en
Publisher:
Release Date : 2019
Geochemistry And Isotopic Composition Of Sediment Cores To Understand The Lithological And Anthropogenic Controls On Eutrophication In The New River Estuary Southland New Zealand written by Danielle J. Brown and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
The New River Estuary (NRE) in Southland, New Zealand is highly eutrophic and has rapidly declining ecosystem health. Historic estuarine reclamation, extensive catchment drainage, and waterway modification have increased the susceptibility of the estuary to degradation. In addition, more recent (post-1984) agricultural intensification and a shift in primary land use from sheep to dairy farming have increased the fine-sediment and associated pollutant loss to the catchment. Extensive macroalgae cover in the NRE reflects the ecosystem's response to eutrophication, where opportunistic species outcompete native plants in the nutrientenriched environment. Three sediment cores from the primary depositional areas in the NRE, the Waihopai Arm and Daffodil Bay, were geochemically characterized, including stable and radiogenic isotopes, to assess changes in the rate of sediment, nutrient, and heavy metal accumulation. The sedimentation rate in the upper Waihopai Arm has increased from 7.3-13 mm yr-1 before 1935 to a very high rate of 20-22 mm yr-1 from 2009-2017. The lower Waihopai Arm and Daffodil Bay have increased to a high rate of sedimentation in the last decade from 5.9 to 17.5 mm yr-1 and 5.5-7 to 10.3 mm yr-1 , respectively. Phosphorus and trace metal concentrations in the bioavailable sediment fraction, which includes Fe- and Mn-oxides, sulfide, organic, or surface-adsorbed phases, have increased up to three and eight times higher than geogenic levels, respectively, which heightens their vulnerability to mobilization in response to changes in salinity and redox state. Increasing heavy metals and decreasing calcium loads, coupled with carbon- and nitrogen-isotopic values trending toward a terrestrial signature ([...] 13C = -28[...], [...] 15N = 8[...]), delineates a transition in sediment source from marine-dominated (pre-1935) to terrestrial-dominated (post-1985). The composition of fallout radionuclides also indicates a change in the delivery of terrestrial sediment from channel bank collapse and subsoil erosion (pre-1965) to sheet erosion of surface, likely pasture, soils (post-1997). This study highlights the importance of differentiating the natural sediment signatures from the anthropogenic sources of pollutants to assess the proportion of low-quality sediment (i.e., high nutrient and/or metal concentration) for which a targeted mitigation approach should be applied.
High Resolution Morphodynamics And Sedimentary Evolution Of Estuaries
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Author : Duncan M. FitzGerald
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-07-05
High Resolution Morphodynamics And Sedimentary Evolution Of Estuaries written by Duncan M. FitzGerald and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-07-05 with Science categories.
This collection of papers offers a new approach to nearshore and estuary studies, with an emphasis on multidisciplinary techniques and data integration. The important results of these studies are accompanied by full color images.
Proceedings Of The Third International Symposium On River Sedimentation
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Author : S. Y. Wang
language : en
Publisher: School of Engineering University of Mississippi
Release Date : 1986
Proceedings Of The Third International Symposium On River Sedimentation written by S. Y. Wang and has been published by School of Engineering University of Mississippi this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Nature categories.
Fluvial Tidal Sedimentology
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Author :
language : en
Publisher: Elsevier
Release Date : 2015-11-26
Fluvial Tidal Sedimentology written by and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-11-26 with Science categories.
Fluvial-Tidal Sedimentology provides information on the ‘Tidal-Fluvial Transition', the transition zone between river and tidal environments, and includes contributions that address some of the most fundamental research questions, including how the morphology of the tidal-fluvial transition zone evolves over short (days) and long (decadal) time periods and for different tidal and fluvial regimes, the structure of the river flow as it varies in its magnitude over tidal currents and how this changes at the mixing interface between fresh and saline water and at the turbidity maximum, the role of suspended sediment in controlling bathymetric change and bar growth and the role of fine-grained sediment (muds and flocs), whether it is possible to differentiate between ‘fluvial’ and ‘tidally’ influenced bedforms as preserved in bars and within the adjacent floodplain and what are the diagnostic sedimentary facies of tidal-fluvial deposits and how are these different from ‘pure’ fluvial and tidal deposits, amongst other topics. The book presents the latest research on the processes and deposits of the tidal-fluvial transition, documenting recent major field programs that have quantified the flow, sediment transport, and bed morphology in tidal-fluvial zones. It uses description of contemporary environments and ancient outcrop analogues to characterize the facies change through the tidal-fluvial transition. Presents the latest outcomes from recent, large, integrated field programs in estuaries around the world Gives detailed field descriptions (outcrop, borehole, core, contemporary sediments) of tidal-fluvial deposits Accesses new models and validation datasets for estuarine processes and deposits Presents descriptions of contemporary environments and ancient outcrop analogues to characterize the facies change through the tidal-fluvial transition
Estuarine Cohesive Sediment Dynamics
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Author : Ashish J. Mehta
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-07
Estuarine Cohesive Sediment Dynamics written by Ashish J. Mehta and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-07 with Science categories.
The background for the Workshop on Cohesive Sediment Dynamics - . !!!!!. Special Reference to Physical Processes in Estuaries is briefly outlined in Chapter I. Here I wish to acknowledge those whose support I consider to be pivotal to this under taking. My deepest appreciation goes to Cynthia Vey, whose organizational skills and dedicated effort made the completion of this volume possible. Thanks are also due to Gail Terry for workshop organization, Jean Branson for word processing and Lillean Pieter for helping with drawings. Finally, I must express my sincere appreciation to Arthur Ezra 9f the National Science Foundation for providing support (through Grant No. CEE-8401185) for the workshop, and to Hsiang Wang for depart mental encouragement. With deepest regret, I must note the untimely death of Ranjan Ariathurai, 39, on June 5, 1985, before this volume could be published. He was a guiding force to many within the small group of researchers in cohesive sediment dynamics, and his professional brilliance and inspirational personal qualities constituted the true spirit . behind the workshop. I trust this volume will serve, albeit in a small way, as a fitting memory to this spirit, and to the remarkable professional contributions Ranjan made during his short career. Professor Ray B. Krone Professor Emmanuel Partheniades Department of Civil Engineering Department of Engineering Sciences University of California University of Florida Davis, California Gainesville, Florida TABLE OF CONTENTS CHAPTER PAGE I. INTRODUCTION Ashish J. Mehta •••••••••••••••••••••••••••••••••••••••••••••••••••• 1 II.
The Hudson River Estuary
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Author : Jeffrey S. Levinton
language : en
Publisher: Cambridge University Press
Release Date : 2006-01-09
The Hudson River Estuary written by Jeffrey S. Levinton and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-01-09 with History categories.
The Hudson River Estuary, first published in 2006, is a scientific biography with relevance to similar natural systems.