Effects Of Flow Regime On Freeze Up Processes Of Rivers
DOWNLOAD
Download Effects Of Flow Regime On Freeze Up Processes Of Rivers PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Effects Of Flow Regime On Freeze Up Processes Of Rivers book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Effects Of Flow Regime On Freeze Up Processes Of Rivers
DOWNLOAD
Author : Michelle-Anne Irmen
language : en
Publisher:
Release Date : 1986
Effects Of Flow Regime On Freeze Up Processes Of Rivers written by Michelle-Anne Irmen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.
The Effects Of Flow Regulation On Freeze Up Regime Peace River Taylor To The Slave River
DOWNLOAD
Author : David Donald Andres
language : en
Publisher: The Study
Release Date : 1996
The Effects Of Flow Regulation On Freeze Up Regime Peace River Taylor To The Slave River written by David Donald Andres and has been published by The Study this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Technology & Engineering categories.
Describes the effects of flow regulation on the freeze-up processes of part of the Peace River downstream of the Bennett Dam, which has regulated the river flow since 1972. Ice modelling and a review of ice observations and other field data were used to characterise the extent of flow regulation and its effects on ice in the river channel. Explicit equations and algorithms are presented that quantify the processes by which an ice cover forms on large regulated and non-regulated rivers. Work previously undertaken on the Peace River is also described to provide a framework for the calibration of these algorithms for the river in both its regulated and non-regulated condition. A procedure was developed for forecasting freeze-up on a non-regulated river and a stability relationship was derived that uses both air temperature and discharge to determine whether a juxtaposed or consolidated ice cover will form. In addition, the hydraulic characteristics of the Peace River were evaluated for six reaches using the existing data base.
River And Lake Ice Processes Impacts Of Freshwater Ice On Aquatic Ecosystems In A Changing Globe
DOWNLOAD
Author : Karl-Erich Lindenschmidt
language : en
Publisher: MDPI
Release Date : 2019-01-11
River And Lake Ice Processes Impacts Of Freshwater Ice On Aquatic Ecosystems In A Changing Globe written by Karl-Erich Lindenschmidt and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-11 with Environmental sciences categories.
This book is a printed edition of the Special Issue "River and Lake Ice Processes—Impacts of Freshwater Ice on Aquatic Ecosystems in a Changing Globe" that was published in Water
The Regulation Of Peace River
DOWNLOAD
Author : Michael Church
language : en
Publisher: John Wiley & Sons
Release Date : 2014-10-14
The Regulation Of Peace River written by Michael Church and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-10-14 with Science categories.
This book presents a comprehensive overview of the first longitudinal study of the downstream response of a major river to the establishment of a large hydropower facility and dams. Peace River, a northward flowing boreal river in northwestern Canada was dammed in 1967 and the book describes the morphological response of the 1200 km downstream channel and the response of riparian vegetation to the change in flow regime over the first forty years of regulated flows. Beginning with a description of the effect of regulation on the flow and sediment regimes of the river, the book proceeds to study changes in downstream channel geometry on the main stem, on the lowermost course of tributaries, and on the hydraulic geometry, the overall morphology of the channel, and riparian vegetation succession. The river is subject to annual freeze-up and break-up, so a chapter is devoted to the ice regime of the river. A chapter compares the effects of two extraordinary post-regulation flood events. The penultimate chapter presents a prediction of the ultimate equilibrium form of the regulated river based on rational regime theory. An online database of all the main observations will provide invaluable material for advanced students of river hydraulics and geomorphology. This book carefully brings together a range of studies that have been previously inaccessible providing a rare and comprehensive analysis of the effects of a big dam on a river, a river that itself represents an example of the kind of system that is likely to receive considerable attention in the future from dam engineers and environmentalists. • An invaluable reference to river scientists, hydroelectric power developers, engineers and environmentalists • Focus on a northward flowing boreal river, a type that holds most of the remaining hydroelectric power potential in the Northern Hemisphere • Exceptional separation of water and sediment sources, permitting study of the isolated effect of manipulating one of the two major governing conditions of river processes and form • Unique example of water regulation and both natural and engineered flood flows • Detailed study of both morphological changes of the channel and of the riparian vegetation • Online data supplement including major data tables and numerous maps. Details of the main observations and provides material for problem study by advanced students of river hydraulics and geomorphology are provided
River Ice Breakup
DOWNLOAD
Author : S. Beltaos
language : en
Publisher:
Release Date : 2008
River Ice Breakup written by S. Beltaos and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Frazil ice categories.
The breakup of a river ice cover can be both fascinating and perilous, owing to ever-changing ice conditions and dynamic processes that sometimes lead to extreme flood events caused by ice jams. Though much progress has been made recently in the study of ice jams, less has been achieved on the more general, and more complex, problem of how to predict the entire breakup process, from the first ice movement to the last ice effect on river stage. This type of knowledge is essential to determining when and where ice jam threats may develop and when they may release and generate steep flood waves that can trigger ice runs and jamming further downstream. In turn, such understanding is invaluable to natural hazard reduction, ecosystem conservation and protection, and adaptation to climatic impacts. This book combines the existing information, previously scattered in various journals, conference proceedings, and technical reports. It contains contributions by several authors to achieve a comprehensive and balanced coverage, including qualitative and quantitative descriptions of relevant physical processes, forecasting methods and flood-frequency assessments, as well as ecological impacts and climatic considerations. The book should be of interest to readers of different backgrounds, both beginners and specialists. -- Publisher's website.
Impacts Of Flow Regulation On The Aquatic Ecosystem Of The Peace And Slave Rivers
DOWNLOAD
Author : Terry Donald Prowse
language : en
Publisher:
Release Date : 1996
Impacts Of Flow Regulation On The Aquatic Ecosystem Of The Peace And Slave Rivers written by Terry Donald Prowse and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Nature categories.
The NTBS was designed to address the ecological concerns about pulp mill expansion, and to increase scientific knowledge about environmental conditions [ecology, ecosystem sustainability, water pollution and control, habitat, effect on fish and fishing, etc.] in the major river systems of the north. The study's objectives were to gather and interpret sound scientific information about the basins, develop appropriate recommendations for basin management, and communicate effectively with the public. The government response report confirms the governments' commitment to ecosystem sustainability and to pollution control in northern rivers. First Nations and Metis aboriginal [native] peoples contributed significantly to the NRBS.
Flow Control To Manage River Ice
DOWNLOAD
Author : Andrew M. Tuthill
language : en
Publisher:
Release Date : 1999
Flow Control To Manage River Ice written by Andrew M. Tuthill and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Ice on rivers, lakes, etc categories.
This report describes flow-control methods for reducing ice problems in rivers. Objectives include reducing ice interference with winter hydroelectric production and navigation, ice jam flood mitigation, as well as ensuring minimum winter flows for fish and water supply. The winter season is divided into three periods. During early winter, the main objective of flow control is to promote the rapid formation of a smooth, stable ice cover. For the midwinter period, the aim of the river regulation is to maintain an intact ice cover and avoid premature ice breakup. During the final winter period, the goal is to minimize adverse effects of ice breakup. Examples illustrate the methods and objectives, emphasizing innovative approaches. Available flow regulation planning tools are described and valuable research directions identified.
River Ice Processes And Ice Flood Forecasting
DOWNLOAD
Author : Karl-Erich Lindenschmidt
language : en
Publisher: Springer Nature
Release Date : 2019-09-25
River Ice Processes And Ice Flood Forecasting written by Karl-Erich Lindenschmidt and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-09-25 with Technology & Engineering categories.
This book exposes practitioners and students to the theory and application of river and lake ice processes to gain a better understanding of these processes for modelling and forecasting. It focuses on the following processes of the surface water ice: freeze-up, ice cover thickening, ice cover breakup and ice jamming. The reader will receive a fundamental understanding of the physical processes of each component and how they are applied in monitoring and modelling ice covers during the winter season and forecasting ice floods. Exercises accompany each component to reinforce the theoretical principles learned. These exercises will also expose the reader to different tools to process data, such a space-borne remote sensing imagery for ice cover classification. A thread supporting numerical modelling of river ice and lake ice processes runs through the book.
Cold Region Atmospheric And Hydrologic Studies The Mackenzie Gewex Experience
DOWNLOAD
Author : Ming-ko Woo
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-12-16
Cold Region Atmospheric And Hydrologic Studies The Mackenzie Gewex Experience written by Ming-ko Woo 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 2007-12-16 with Science categories.
This book presents decade-long advances in atmospheric research in the Mackenzie River Basin in northern Canada, which encompasses environments representative of most cold areas on Earth. Collaborative efforts have yielded knowledge entirely transferable to other high latitude regions in America, Europe and Asia. This book complements the first volume coming from the GEWEX project, dealing with the region's atmospheric dynamics.
Numerical Modelling Of River Ice In Complex River Systems
DOWNLOAD
Author : Julia Lynn Blackburn
language : en
Publisher:
Release Date : 2022
Numerical Modelling Of River Ice In Complex River Systems written by Julia Lynn Blackburn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Ice on rivers, lakes, etc categories.
Rivers in cold regions experience ice conditions for a significant part of the year. River ice can cause ice jam flooding, impact hydropower generation operations, and affect a river's ecological and morphological conditions. Many ice processes are highly dynamic and are affected by meteorological / hydrodynamic conditions, and river geomorphology. River ice can be very challenging to study due to the risks and costs associated with data collection in harsh winter conditions. One of the most economical and efficient approaches to study river ice processes and to evaluate the effects of ice on a river's regime is to use numerical model simulations. At present, most existing one-dimensional (1D) river ice models are based on an implicit finite difference solution to the Saint-Venant equations. As a result, highly dynamic events such as rapid ice jam formation or sudden ice jam release are difficult to model due to numerical instabilities that can arise if the flow approaches supercritical. Also, river ice models with network modelling capabilities reduce conservation of mass and energy principles to continuity of discharge and equality of water levels at the junctions, which may not be reasonable when the ice and flow conditions are rapidly changing. There is a need for a comprehensive 1D river ice process model that is capable of simulating the full ice regime in rivers with complex natural channel geometry where mixed flow regimes are anticipated. The ultimate goal of this research is to develop a robust public-domain comprehensive 1D river ice process model, capable of handling complex natural channel geometry and channel networks for the full spectrum of scenarios from simple known steady ice conditions to highly dynamic cases such as ice jam formation or release. In this study, a number of developments were made to the University of Alberta's public-domain hydrodynamic and river ice process model, River1D, as steps towards realizing this ultimate long-term goal. Firstly, the model was reformulated to accommodate natural channel geometry and enhanced to include previously excluded ice processes. Previous versions of the model allowed for a rectangular channel approximation only. The new natural channel geometry version of the model was then enhanced to include new ice processes: water supercooling, frazil accretion, frazil re-entrainment, anchor ice formation and release, border ice formation, under-cover transport of frazil, and ice cover formation based on leading edge stability criteria. The model was validated with freeze-up data from the Susitna River, Alaska. Secondly, the model was modified to simulate flow in channel networks using a momentum based approach to simulate junctions that includes important physical effects at junctions but without the need to adjust model parameters or redefine junctions should a flow reversal occur. A series of steady and unsteady tests were used to assess this new approach. The results were compared to and agreed favourably with results simulated with a two-dimensional (2D) model. The unsteady test results demonstrated the model's capability of handling transient flow reversals. The model was then applied to a network of channels in the Mackenzie Delta for both open water and ice jam conditions. Model results agreed well with observed water level data. Modelled ice jam conditions indicated a flow reversal in the Peel Mackenzie Connector, which is consistent with observations in this channel during breakup. Lastly, the model was enhanced to simulate ice jam profiles in multi-channel networks. The enhancements include provisions for handling junctions when solving the ice jam stability equation within a channel network. The model was compared to a series of idealized test cases from a previous study that sought to investigate the impacts of islands on ice jam profiles. Model results agreed very favourably with the results from the previous study. The model was then applied to the Hay River Delta. The model was validated for both open water and ice jam conditions.