Download or read book Ice Jams in River Confluences written by R. Ettema and published by . This book was released on 1999 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Influencing Ice Conveyance at River Confluences written by R. Ettema and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents preliminary findings concerning ice jam conditions in river confluences, using two laboratory approaches. First is categorizing the different conditions of ice discharge into a confluence based on two general classifications: free drift of ice and movement of contiguous ice accumulations. The variables defining ice discharge for the two categories are assembled via dimensional analysis into two consistent sets of nondimensional parameters. The categorization, together with the nondimensional parameters, is used to evaluate ice jam problems at confluences the two most common causes of jams seem to be sluggish water velocities in the outflow channel and local bathymetric features. The second approach examines how confluence geometry and flow processes affect ice discharge for example, the influence on ice discharge of bathymetric features. The approach uses a large hydraulic model of a two channel confluence, which is adaptable to a variety of channels, and particle image velocimetry (PIV) for determining and mapping whole fields of water and ice velocities in a confluence. PIV, which is becoming extensively used, lends itself very well here. This study is the first demonstration of the PIV method for ice movement through a two river confluence. It shows promise. The hydraulic model and PIV method are used in a case study of ice discharge through the confluence of the Missouri and Mississippi rivers, a confluence prone to severe ice jams.
Download or read book Ice Jam Characteristics Liard Mackenzie Rivers Confluence written by and published by . This book was released on 1988 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: Response to a discussion by Flato and Gerard regarding the sensitivity of the declining-discharge technique to the type of flow equation used in analyzing the Liard-Mackenzie River confluence ice jam and to potential errors in the field data.
Download or read book Ice Jam Flooding and Mitigation Lower Platte River Basin Nebraska written by and published by DIANE Publishing. This book was released on 1996 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of the Corps of Engineers' Section 22 study of ice jam flooding in the Lower Platte River basin. The purpose of the study was to gather and analyze historical data relating to ice jams, with the intent of developing guidance that can be used to alleviate ice jam flooding at seven sites within the study area. Ice event and related information is summarized for each site. Ice event characteristics for the study area are identified and analyzed. A model for predicting the occurrence of ice jams or other ice events within the study area was developed based on data for the Platte River at North Bend, Nebraska. The model provides the minimum discharge associated with ice events for a given date, assuming a threshold value of accumulated freezing degree-days has been reached. A data collection program for future field observations was developed and placed in operation during the winter of 1993-94. General information on ice jam mitigation measures, as well as specific information on such operations as dusting and blasting, is provided. Specific recommendations include increased monitoring of ice conditions, installation of ice motion detectors and water stage recorders, and further study of nonstructural and structural mitigation measures. The use of dusting and blasting as mitigation measures is also presented. The study was divided into six phases. Phase 1 involved collection of historical information from all available data sources, published and oral. Site visits were made to each identified site. Phase 2 entailed analysis and assessment of the collected hydrological, hydraulical, meteorological and ice data.
Download or read book Ice Jam Flooding on the Missouri River Near Williston North Dakota written by and published by DIANE Publishing. This book was released on with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Influencing Ice Conveyance at River Confluences written by and published by . This book was released on 1997 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Winter Ice Jams on the Gunnison River written by P. H. Burgi and published by . This book was released on 1979 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book River Ice Jams written by S. Beltaos and published by Water Resources Publication. This book was released on 1995 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ice Jam Flooding and Mitigation written by Kathleen D. White and published by . This book was released on 1996 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book River Confluences Tributaries and the Fluvial Network written by Stephen Rice and published by John Wiley & Sons. This book was released on 2008-07-31 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: River Confluences and the Fluvial Network brings together state of the art thinking on confluence dynamics tributary impacts and the links between processes at these scales and river network functions. The book is unique in focus, content, scope and in bringing together engineering, ecological and geomorphological approaches to the three key areas of river system science. Taking a global approach this multi-authored text features a team of carefully selected, internationally renowned, experts who have all contributed significantly to recent ground breaking advancements in the field. Each chapter includes a comprehensive review of work to date highlighting recent discoveries and the main thrust of knowledge, previously unpublished research and case studies, challenges and questions, detailed references as well as a forward looking assessment of the state of the science.
Download or read book River Channel Characteristics at Selected Ice Jam Sites in Vermont written by Lawrence W. Gatto and published by . This book was released on 1978 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ice Jam Flood Assessment for the St John River Basin Aroostook County Maine written by and published by DIANE Publishing. This book was released on with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selection of Confluence Sites with Ice Problems for Structural Solutions written by Andrew M. Tuthill and published by . This book was released on 1997 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ice Jam Problems at Oil City Pennsylvania written by D. S. Deck and published by . This book was released on 1981 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oil City, Pennsylvania, is at the confluence of Oil Creek and the Allegheny River. The business district lies within the flood plain of Oil Creek, and as of the winter of 1980, 25 ice jam flooding events had occurred since the mid-1800's. An investigation was done to determine why Oil City was subject to perennial ice jams and nearly biennial ice jam floods. Ice conditions were analyzed and it was determined how and why the ice jams occurred. By controlling where the initial cover forms, Oil City's ice jam floods can be alleviated. Ice control structures will be used to encourage the early formation of ice cover and hence eliminate frazil ice. This will greatly reduce the amount of ice which currently develops in both Oil Creek and the Allegheny River. (Author).
Download or read book River Ice Processes and Ice Flood Forecasting written by Karl-Erich Lindenschmidt and published by Springer Nature. This book was released on 2019-09-25 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Investigation of the Occurrence of Ice Jams on the Lower Red River in Manitoba written by Morgann Becket and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Lower Red River in Manitoba regularly experiences ice jam flooding, with the most severe events occurring between Lockport and Netley Lake. This research investigates the timing and frequency of ice jamming on this section of the Lower Red River, the relationship between ice jams and antecedent conditions, and different ice jam prediction methods and their suitability for the study area. By gaining a better understanding of ice jamming trends in the area, this research provides accessible prediction methods that can help guide decisions related to the risk and severity of spring ice jamming. A database of ice jam events was developed with each event given a severity rating from 1-5, based on the resulting flood from the ice jam. Out of 54 ice jam events from 1962-2017, the most common event locations were found to be Sugar Island, Selkirk Bridge, and the Netley Creek Confluence. All ice jam events occurred when the peak spring flow exceeded 1000 cms and all severe events (severity 3+) occurred when peak spring flows exceeded 1500 cms. Three different ice jam prediction models including a threshold model, regression model, and discriminate function analysis (DFA) were developed using meteorological and hydrometric parameter data. The threshold model proved to be the best tool to predict severe events, as its predictions differentiated all severe event years from non-event years with only one false positive result. The quadratic three-outcome DFA had success in predicting minor ice jam years (severity 1-2) and differentiating them from severe ice jam or no ice jam years and is therefore recommended to use alongside the threshold model. The regression model was not as effective as the threshold model or DFA in predicting ice jamming.
Download or read book Sediment Transport written by Silvia Susana Ginsberg and published by BoD – Books on Demand. This book was released on 2011-04-26 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment transport is a book that covers a wide variety of subject matters. It combines the personal and professional experience of the authors on solid particles transport and related problems, whose expertise is focused in aqueous systems and in laboratory flumes. This includes a series of chapters on hydrodynamics and their relationship with sediment transport and morphological development. The different contributions deal with issues such as the sediment transport modeling; sediment dynamics in stream confluence or river diversion, in meandering channels, at interconnected tidal channels system; changes in sediment transport under fine materials, cohesive materials and ice cover; environmental remediation of contaminated fine sediments. This is an invaluable interdisciplinary textbook and an important contribution to the sediment transport field. I strongly recommend this textbook to those in charge of conducting research on engineering issues or wishing to deal with equally important scientific problems.
