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Author: Faye Hicks
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Faye Hicks
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Faye Hicks, Ph.d.
Publisher: Createspace Independent Publishing Platform
ISBN: 9781492788638
Category :
Languages : en
Pages : 170
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Book Description
River ice affects most streams in the northern hemisphere for several months each winter and is often responsible for severe floods and infrastructure damage. Consequently, an understanding of river ice processes and hydraulics is essential for civil engineers who are involved in designing engineering works in and around natural streams. This book offers knowledge and advice on river ice process and hydraulics and is designed to be both an educational tool for civil engineers having no previous knowledge of river ice, as well as a handbook for practitioners seeking specific techniques for monitoring and analysis of rivers affected by ice.
Author: Karl-Erich Lindenschmidt
Publisher: Springer Nature
ISBN: 3030286797
Category : Technology & Engineering
Languages : en
Pages : 267
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Book Description
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.
Author: A. M. Wasantha Lal
Publisher:
ISBN:
Category : Hydraulic models
Languages : en
Pages : 92
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Book Description
Author: Saber Ansari
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Ice plays an important role in hydraulic processes of rivers in cold regions such as Canada. The formation, progression, recession and breakup of river ice cover known as river ice processes affect river hydraulics, sediment transport characteristics as well as river morphology. Ice jamming and break up are responsible of winter flash floods, river bed modification and bank scour. River ice cover monitoring using terrestrial images from cameras installed on the shores can help monitor and understand river ice processes. In this study, the benefits of terrestrial monitoring of river ice using a camera installed on the shore are evaluated. A time-lapse camera system was installed during three consecutive winters at two locations on the shores of the Lower Nelson River, in Northern Manitoba and programmed to take an image of the river ice cover approximatively every hour. An image analysis algorithm was then developed to automatically extract quantitative characteristics of the river ice cover from the captured images. The developed algorithm consists of four main steps: preprocessing, image registration, georectification and river ice detection. The contributions of this thesis include the development of a novel approach for performing georectification while accounting for a fluctuating water surface elevation, and the use of categorization approach and a locally adaptive image thresholding technique for target detection. The developed algorithm was able to detect and quantify important river ice cover characteristics such as the area covered by ice, border ice progression and ablation rate, and river ice break up processes with an acceptable accuracy.
Author: Qizhong Guo
Publisher:
ISBN:
Category : Floods
Languages : en
Pages : 93
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Author: Soheil Ghareh Aghaji Zare
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
New subroutines are designed and added to extend the model capability to include simulation of ice processes during the ice cover break-up and finally to calculate the sediment transport under the ice cover. Step 6: As the final step, the new subroutines are adjusted and linked to the main improved code, providing a new framework for dynamic ice cover simulation, more prepared for further future improvements both in terms of conceptual and programming aspects of the river ice modeling . The new Matlab basis of the code facilitates upgrading the model to include more complicated processes like river ice jam simulations. As the general result of this thesis, we have a better understanding of hydraulics and sediment transport processes in ice covered rivers ( direct and indirect measurements of river hydraulics characteristics), improved formulas for these processes (including more involving parameters) and a better version of the river ice simulation model (capable of simulating the complete river ice processes) for the contributors to this study in the industry.
Author: S. Beltaos
Publisher: Water Resources Publication
ISBN: 9780918334879
Category : Nature
Languages : en
Pages : 402
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Book Description
Author: Kevin Lees
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Ice is a prominent characteristic of water bodies in cold regions. For rivers regulated for hydropower operations, the production of ice particles can result in obstructions and subsequent performance issues during energy production. Rough and thickened ice covers resulting from high flow conditions can also lead to substantial hydraulic losses. While ice formations impact hydropower operations, a river's flow hydrograph also influences ice processes from freeze-up through break-up. Research investigations into the influence of regulation on ice processes benefits not only hydropower practioners, but also those who are impacted by hydropower operations. Further, understanding these cause-and-affect relationships supports design of innovative tools to quantify the impact of ice on river hydraulics. In this study, a detailed characterization of ice processes is presented for the regulated Upper Nelson River region located at the outlet of Lake Winnipeg in Northern Manitoba, Canada. With a focus on freeze-up and mid-winter processes, this characterization informed design of a 2D numerical modelling methodology to simulate ice-affected winter hydraulics. Model development included simulation of both thermal and dynamic ice phenomenon, which relied on derivation of numerous site-specific hydraulic functions. The presence of significant skim ice runs in this region inspired development of a novel treatment to simulate freeze-up jamming of skim ice floes on very mild-sloped rivers. The modelling methodology shows strong performance in simulating both freeze-up and mid-winter hydraulics, which is a signficiant contribution considering the complexity of this lake-outlet system. A quantitative evaluation of the effects of climate change on river ice hydraulics is included, with future projection of shorter and warmer winters leading to greater cumulative discharge from Lake Winnipeg. While discharge increases may lead to increased power production in future years, concurrent projections of increased inter-annual variability may present new operational challenges. Findings from this original research can be applied not only to the Nelson River, but also other regulated regions that are impacted by river ice.
Author: Karl-Erich Lindenschmidt
Publisher: MDPI
ISBN: 3038973882
Category : Science
Languages : en
Pages : 211
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Book Description
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
