Changes In Floodplain Inundation Under Non Stationary Hydrology For An Adjustable Alluvial River Channel
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Changes In Floodplain Inundation Under Non Stationary Hydrology For An Adjustable Alluvial River Channel
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Author : Bruce C. Call
language : en
Publisher:
Release Date : 2017
Changes In Floodplain Inundation Under Non Stationary Hydrology For An Adjustable Alluvial River Channel written by Bruce C. Call and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Predicting the frequency and aerial extent of flooding in river valleys is essential for infrastructure design, environmental management, and risk assessment. Such flooding occurs when the discharge of water within a river channel exceeds its maximum capacity and the extra water submerges the adjoining floodplain surface. The maximum capacity of a channel is controlled by its geometry, gradient, and frictional resistance. Conventional flood prediction methods rely on assumptions of unchanging flood probabilities and channel capacities. However, changes in climate, land cover, and water management have been shown to systematically shift the magnitude and variability of flood flows in many systems. Additionally, alluvial river channels continually adjust their geometries according to characteristics of flow and sediment regimes. For example, channels can expand their geometry during high-energy flows through erosion, then contract their geometry through sediment deposition during low-energy flows. This means that changes in flow magnitudes, frequencies, or durations can cause changes in a channel's maximum capacity due to adjustments in river channel geometry. Therefore, future changes in river flow regimes and channel geometry may amplify or attenuate the frequency and magnitude of flood inundation in unexpected ways. The focus of this thesis is the development of a novel simulation model to investigate potential changes in the frequency and aerial extent of floodplain inundation due to systematic changes in peak flows and subsequent adjustments in channel geometry and capacity. The model was run using six hypothetical flow scenarios to explore how changes in the mean and variance of an annual peak flow series influences the frequency and magnitude of floodplain inundation. In order to qualitatively simulate the various mechanisms controlling channel adjustment across a continuum of different river environments, each scenario was run multiple times while gradually varying model parameters controlling the amount of permissible adjustment in channel geometry. Results suggest that systematic shifts in peak flows cannot be translated directly to changes in the frequency or magnitude of floodplain inundation due to the non-linear factors controlling the rate and trajectory of channel adjustment. Insights gained from these results demonstrate the need to account for potential changes in both peak flows and channel capacities in the prediction and mitigation of flood hazards.
Risk Analysis Based On Data And Crisis Response Beyond Knowledge
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Author : Chongfu Huang
language : en
Publisher: CRC Press
Release Date : 2019-10-11
Risk Analysis Based On Data And Crisis Response Beyond Knowledge written by Chongfu Huang and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-11 with Science categories.
This book collects the papers presented at the 7th International Conference on Risk Analysis and Crisis Response (RACR-2019) held in Athens, Greece, on October 15-19, 2019. The overall theme of the seventh international conference on risk analysis and crisis response is Risk Analysis Based on Data and Crisis Response Beyond Knowledge, highlighting science and technology to improve risk analysis capabilities and to optimize crisis response strategy. This book contains primarily research articles of risk issues. Underlying topics include natural hazards and major (chemical) accidents prevention, disaster risk reduction and society resilience, information and communication technologies safety and cybersecurity, modern trends in crisis management, energy and resources security, critical infrastructure, nanotechnology safety and others. All topics include aspects of multidisciplinarity and complexity of safety in education and research. The book should be valuable to professors, engineers, officials, businessmen and graduate students in risk analysis and risk management.
Statistical Analysis And Stochastic Modelling Of Hydrological Extremes
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Author : Hossein Tabari
language : en
Publisher: MDPI
Release Date : 2019-10-28
Statistical Analysis And Stochastic Modelling Of Hydrological Extremes written by Hossein Tabari and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-28 with Science categories.
Hydrological extremes have become a major concern because of their devastating consequences and their increased risk as a result of climate change and the growing concentration of people and infrastructure in high-risk zones. The analysis of hydrological extremes is challenging due to their rarity and small sample size, and the interconnections between different types of extremes and becomes further complicated by the untrustworthy representation of meso-scale processes involved in extreme events by coarse spatial and temporal scale models as well as biased or missing observations due to technical difficulties during extreme conditions. The complexity of analyzing hydrological extremes calls for robust statistical methods for the treatment of such events. This Special Issue is motivated by the need to apply and develop innovative stochastic and statistical approaches to analyze hydrological extremes under current and future climate conditions. The papers of this Special Issue focus on six topics associated with hydrological extremes: Historical changes in hydrological extremes; Projected changes in hydrological extremes; Downscaling of hydrological extremes; Early warning and forecasting systems for drought and flood; Interconnections of hydrological extremes; Applicability of satellite data for hydrological studies.
A Systems Approach For River And River Basin Restoration
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Author : Theodore Endreny
language : en
Publisher: MDPI
Release Date : 2021-05-27
A Systems Approach For River And River Basin Restoration written by Theodore Endreny and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-27 with Technology & Engineering categories.
Communities increasingly find that the water quality, water levels, or some other resource indicator in their river basins do not meet their expectations. This discrepancy between the desired and actual state of the resource leads to efforts in river basin restoration. River basins are complex systems, and too often, restoration efforts are ineffective due to a lack of understanding of the purpose of the system, defined by the system structure and function. The river basin structure includes stocks (e.g., water level or quality), inflows (e.g., precipitation or fertilization), outflows (e.g., evaporation or runoff), and positive and negative feedback loops with delays in responsiveness, all of which function to change or stabilize the state of the system (e.g., the stock of interest, such as water level or quality). External drivers on this structure, together with goals and rules, contribute to how a river basin functions. This book reviews several new research projects to identify and rank the twelve most effective leverage points to address discrepancies between the desired and actual state of the river basin system. This book demonstrates that river basin restoration is most likely to succeed when we change paradigms rather than try to change the system elements, as the paradigm will establish the system goals, structure, rules, delays, and parameters.
Geospatial Information Handbook For Water Resources And Watershed Management Volume Iii
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Author : John G Lyon
language : en
Publisher: CRC Press
Release Date : 2022-12-21
Geospatial Information Handbook For Water Resources And Watershed Management Volume Iii written by John G Lyon and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-21 with Technology & Engineering categories.
Volume III of Geospatial Information Handbook for Water Resources and Watershed Management discusses water and watershed issues such as water quality, evapotranspiration, water resource management, and ecological services. Featured is a two-stage ditch and river geomorphology case study section with related water geospatial applications, including historical image analyses of floodplains and channels and resulting change in river geomorphology through erosion and transport and influence on dependent vegetation communities. Captures advanced Geospatial Technologies (GT) and their applications to address a wide spectrum of water issues Provides real-world two-stage ditch and river geomorphology case studies using river, stream and channel measures and change models, and bankfull discharge modeling Global in coverage with applications demonstrated by more than 170 experts in water sciences and two-stage ditch and river geomorphology This handbook is a wide-ranging and contemporary reference of advanced geospatial techniques used in numerous practical applications at the local and regional scale and is an in-depth resource for professionals and the water research community worldwide.
Selected Water Resources Abstracts
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Author :
language : en
Publisher:
Release Date : 1990
Selected Water Resources Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Hydrology categories.
Flooding And Management Of Large Fluvial Lowlands
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Author : Paul F. Hudson
language : en
Publisher: Cambridge University Press
Release Date : 2021-11-25
Flooding And Management Of Large Fluvial Lowlands written by Paul F. Hudson 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 2021-11-25 with Medical categories.
Examines interrelations between flood management, flooding, and environmental change, for advanced students, researchers, and practitioners.
River Dynamics
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Author : Bruce L. Rhoads
language : en
Publisher: Cambridge University Press
Release Date : 2020-04-29
River Dynamics written by Bruce L. Rhoads 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 2020-04-29 with Science categories.
Rivers are important agents of change that shape the Earth's surface and evolve through time in response to fluctuations in climate and other environmental conditions. They are fundamental in landscape development, and essential for water supply, irrigation, and transportation. This book provides a comprehensive overview of the geomorphological processes that shape rivers and that produce change in the form of rivers. It explores how the dynamics of rivers are being affected by anthropogenic change, including climate change, dam construction, and modification of rivers for flood control and land drainage. It discusses how concern about environmental degradation of rivers has led to the emergence of management strategies to restore and naturalize these systems, and how river management techniques work best when coordinated with the natural dynamics of rivers. This textbook provides an excellent resource for students, researchers, and professionals in fluvial geomorphology, hydrology, river science, and environmental policy.
Future Flooding And Coastal Erosion Risks
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Author : Colin R Thorne
language : en
Publisher: Thomas Telford
Release Date : 2007-01-10
Future Flooding And Coastal Erosion Risks written by Colin R Thorne and has been published by Thomas Telford this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-01-10 with Business & Economics categories.
"Over 200 billion worth of assets are at risk around British rivers and coasts and those risks are likely to increase over the next 100 years due to changes in climate and in society." Sir David King, Government Chief Scientific Adviser This book presents a comprehensive insight into the flooding system, spanning multiple disciplines across different sectors of the flood and flood management professions. It forecasts the manner in which flooding and coastal erosion risks may increase during the 21st century due to climate change.
Weather And Water
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Author : World Meteorological Organization
language : en
Publisher:
Release Date : 1977
Weather And Water written by World Meteorological Organization and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Hydrology categories.