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Author: National Research Council
Publisher: National Academies Press
ISBN: 9780309045346
Category : Technology & Engineering
Languages : en
Pages : 580
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Book Description
Aldo Leopold, father of the "land ethic," once said, "The time has come for science to busy itself with the earth itself. The first step is to reconstruct a sample of what we had to begin with." The concept he expressedâ€"restorationâ€"is defined in this comprehensive new volume that examines the prospects for repairing the damage society has done to the nation's aquatic resources: lakes, rivers and streams, and wetlands. Restoration of Aquatic Ecosystems outlines a national strategy for aquatic restoration, with practical recommendations, and features case studies of aquatic restoration activities around the country. The committee examines: Key concepts and techniques used in restoration. Common factors in successful restoration efforts. Threats to the health of the nation's aquatic ecosystems. Approaches to evaluation before, during, and after a restoration project. The emerging specialties of restoration and landscape ecology.
Author: Ramakar Jha
Publisher: Springer Nature
ISBN: 3030817687
Category : Science
Languages : en
Pages : 459
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Book Description
This book presents key principles of the hydraulics of river basins, with a unique focus on the interplay between stream flows and sediment transport. Addressing a number of basic topics related to the hydraulics of river systems, above all it emphasizes applicative aspects in order to provide the reader with a solid grasp of river engineering. The understanding of the river hydraulics is essential for the assessment of optimum locations for the conservation of water resources and its structures. This book will be interesting to readers and researchers working in the specialized area of river hydraulics of Ganga basin, Narmada, Tapi, Godavari, and other basins of India. It consists of review on hydraulics of meandering river; hydraulic design of reservoir in permeable pavement; optimization of hydraulic design; hydraulic investigations to optimize the design of spillway and design of energy dissipater; and analysis of performance of orifice spillway using computational fluid dynaics
Author: National Research Council
Publisher: National Academies Press
ISBN: 9780309045346
Category : Technology & Engineering
Languages : en
Pages : 580
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Book Description
Aldo Leopold, father of the "land ethic," once said, "The time has come for science to busy itself with the earth itself. The first step is to reconstruct a sample of what we had to begin with." The concept he expressedâ€"restorationâ€"is defined in this comprehensive new volume that examines the prospects for repairing the damage society has done to the nation's aquatic resources: lakes, rivers and streams, and wetlands. Restoration of Aquatic Ecosystems outlines a national strategy for aquatic restoration, with practical recommendations, and features case studies of aquatic restoration activities around the country. The committee examines: Key concepts and techniques used in restoration. Common factors in successful restoration efforts. Threats to the health of the nation's aquatic ecosystems. Approaches to evaluation before, during, and after a restoration project. The emerging specialties of restoration and landscape ecology.
Author: Executive Office of the President of the United States
Publisher:
ISBN: 9781688664630
Category :
Languages : en
Pages : 61
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Book Description
America's unrestricted access to the Atlantic and Pacific Oceans, Gulf of Mexico, rivers, Great Lakes, and Arctic region powers domestic and global commerce. The ease of moving cargo and people beyond our coasts fuels the Nation's competitive advantage, advances trade, generates capital, and drives the domestic economy forward, in turn projecting strength abroad and safeguarding our national interests. Similarly, the biological diversity and productivity of the ocean sustains the health of coastal communities and promotes a vibrant national economy. The ocean also plays a fundamental role in the Earth system. Ensuring responsible ocean stewardship with science and technology (S&T) breakthroughs depends on a strategic Federal portfolio supported by foundational basic research. Science and Technology for America's Oceans: A Decadal Vision identifies pressing research needs and areas of opportunity within the ocean S&T enterprise for the decade 2018-2028.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309264898
Category : Political Science
Languages : en
Pages : 188
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Book Description
In anticipation of future environmental science and engineering challenges and technologic advances, EPA asked the National Research Council (NRC) to assess the overall capabilities of the agency to develop, obtain, and use the best available scientific and technologic information and tools to meet persistent, emerging, and future mission challenges and opportunities. Although the committee cannot predict with certainty what new environmental problems EPA will face in the next 10 years or more, it worked to identify some of the common drivers and common characteristics of problems that are likely to occur. Tensions inherent to the structure of EPA's work contribute to the current and persistent challenges faced by the agency, and meeting those challenges will require development of leading-edge scientific methods, tools, and technologies, and a more deliberate approach to systems thinking and interdisciplinary science. Science for Environmental Protection: The Road Ahead outlines a framework for building science for environmental protection in the 21st century and identified key areas where enhanced leadership and capacity can strengthen the agency's abilities to address current and emerging environmental challenges as well as take advantage of new tools and technologies to address them. The foundation of EPA science is strong, but the agency needs to continue to address numerous present and future challenges if it is to maintain its science leadership and meet its expanding mandates.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309049482
Category : Technology & Engineering
Languages : en
Pages : 127
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Book Description
This volume, a collection of seven essays by individuals prominent in the water resources field, commemorates the tenth anniversary of the Water Science and Technology Board. The essays cover a variety of current issues in the field, including intergenerational fairness and water resources, the relationship between policy and science for American rivers, changing values and perceptions in the hydrologic sciences, challenges to water resources decision making, and changing concepts of systems management. An overview of institutions in the field is also given.
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 526
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Book Description
Author: Sean W. Fleming
Publisher: Princeton University Press
ISBN: 0691191824
Category : Nature
Languages : en
Pages : 216
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Book Description
Rivers are essential to every aspect of civilization, yet how many understand how they work? Fleming takes readers on a journey along our planet's waterways, providing a scientist's reflections on the profound interrelationships that rivers have with landscapes, ecosystems, and societies.
Author: Marcello Benedini
Publisher: Springer Science & Business Media
ISBN: 9400755090
Category : Science
Languages : en
Pages : 292
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Book Description
The main objective of the Water Framework Directive in the European countries is to achieve a “good status” of all the water bodies, in the integrated management of river basins. In order to assess the impact of improvement measures, water quality models are necessary. During the previous decades the progress in computer technology and computational methods has supported the development of advanced mathematical models for pollutant transport in rivers and streams. This book is intended to provide the fundamental knowledge needed for a deeper understanding of these models and the development of new ones, which will fulfil future quality requirements in water resources management. This book focuses on the fundamentals of computational techniques required in water quality modelling. Advection, dispersion and concentrated sources or sinks of contaminants lead to the formulation of the fundamental differential equation of pollutant transport. Its integration, according to appropriate initial and boundary conditions and with the knowledge of the velocity field, allows for pollutant behaviour to be assessed in the entire water body. An analytical integration is convenient only in one-dimensional approach with considerable simplification. Integration in the numerical field is useful for taking into account particular aspects of water body and pollutants. To ensure their reliability, the models require accurate calibration and validation, based on proper data, taken from direct measurements. In addition, sensitivity and uncertainty analysis are also of utmost importance. All the above items are discussed in detail in the 21 chapters of the book, which is written in a didactic form for professionals and students.
Author: Laurence C. Smith
Publisher: Little, Brown Spark
ISBN: 0316411981
Category : Nature
Languages : en
Pages : 335
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Book Description
An "eye-opening, sometimes alarming, and ultimately inspiring" natural history of rivers and their complex and ancient relationship with human civilization (Elizabeth Kolbert, Pulitzer Prize-winning author of The Sixth Extinction). Rivers, more than any road, technology, or political leader, have shaped the course of human civilization. They have opened frontiers, founded cities, settled borders, and fed billions. They promote life, forge peace, grant power, and can capriciously destroy everything in their path. Even today, rivers remain a powerful global force -- one that is more critical than ever to our future. In Rivers of Power, geographer Laurence C. Smith explores the timeless yet underappreciated relationship between rivers and civilization as we know it. Rivers are of course important in many practical ways (water supply, transportation, sanitation, etc). But the full breadth of their influence on the way we live is less obvious. Rivers define and transcend international borders, forcing cooperation between nations. Huge volumes of river water are used to produce energy, raw commodities, and food. Wars, politics, and demography are transformed by their devastating floods. The territorial claims of nations, their cultural and economic ties to each other, and the migrations and histories of their peoples trace back to rivers, river valleys, and the topographic divides they carve upon the world. And as climate change, technology, and cities transform our relationship with nature, new opportunities are arising to protect the waters that sustain us. Beautifully told and expansive in scope, Rivers of Power reveals how and why rivers have so profoundly influenced our civilization and examines the importance this vast, arterial power holds for the future of humanity. "As fascinating as it is beautifully written."---Jared Diamond, Pulitzer Prize-winning author of Guns, Germs, and Steel, Collapse, and Upheaval
Author:
Publisher:
ISBN:
Category : Waterways
Languages : en
Pages : 308
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Book Description
