Topographical Measurements of Water Waves at a Matrix of Measuring Points

Topographical Measurements of Water Waves at a Matrix of Measuring Points PDF Author: Peter Vennemann
Publisher: diplom.de
ISBN: 3832450300
Category : Science
Languages : en
Pages : 50

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Book Description
Inhaltsangabe:Abstract: The measurement of the shape of a water wave is important for the study of a wide range of questions like the understanding of wave motions, the wave shapes dependence an the quality of the ground, the water depth or the surface tension which might be altered by pollution. The mixing of substances or gases at the surface of the sea is dependent an the waves shapes. The shape of a water wave is also interesting for understanding the transport mechanisms and the energy of waves. Knowledge about water wave shapes is essential for the design of an effective shore protection which is going to be more and more important when the sea level is rising. Furthermore offshore designers require knowledge about the shape of a wave during its interaction with installations for optimising the shape of offshore structures and for calculating the loading. This is a key requisite for the design and the construction of cost effective and save structures of any kind like buoys, lifeboats, ships, oil rigs or other offshore platforms. Measurements of wave shapes for example can help to understand the interference or upwelling caused by the legs of typical offffshore platform geometries which can enhance the wave amplitude and possible wave impact with the underside of the platform. The probably simplest way of measuring the surface of a wave is to put a certain number of water depth gauges into the water, taking a photo of the wave when it is passing the gauges and then reading every single measure from the photograph. The wave shape can be reconstructed by interpolating the waves surface between the measuring points. The considerable distortion of the measuring object by the measuring instruments is disadvantageous. An array of pressure sensors in a plain below the water surface can be used instead of the gauges to avoid the distortions. The pressure at every single sensor is a measure for the water height above the sensor. The disadvantage of this method is the sensitivity of the pressure sensors for the dynamic pressure of water flows caused by turbulences, in particular in shallow water, underneath breaking waves or close to constructions. Also disadvantageous is the necessity of mounting a part of the measuring system under the water. To avoid this problems, photographic methods for the recording of surface waves have been developed: At the beginning of the 20th century the first attempts have been made to collect elevation data of ocean [...]

Topographical Measurements of Water Waves at a Matrix of Measuring Points

Topographical Measurements of Water Waves at a Matrix of Measuring Points PDF Author: Peter Vennemann
Publisher: diplom.de
ISBN: 3832450300
Category : Science
Languages : en
Pages : 50

Get Book Here

Book Description
Inhaltsangabe:Abstract: The measurement of the shape of a water wave is important for the study of a wide range of questions like the understanding of wave motions, the wave shapes dependence an the quality of the ground, the water depth or the surface tension which might be altered by pollution. The mixing of substances or gases at the surface of the sea is dependent an the waves shapes. The shape of a water wave is also interesting for understanding the transport mechanisms and the energy of waves. Knowledge about water wave shapes is essential for the design of an effective shore protection which is going to be more and more important when the sea level is rising. Furthermore offshore designers require knowledge about the shape of a wave during its interaction with installations for optimising the shape of offshore structures and for calculating the loading. This is a key requisite for the design and the construction of cost effective and save structures of any kind like buoys, lifeboats, ships, oil rigs or other offshore platforms. Measurements of wave shapes for example can help to understand the interference or upwelling caused by the legs of typical offffshore platform geometries which can enhance the wave amplitude and possible wave impact with the underside of the platform. The probably simplest way of measuring the surface of a wave is to put a certain number of water depth gauges into the water, taking a photo of the wave when it is passing the gauges and then reading every single measure from the photograph. The wave shape can be reconstructed by interpolating the waves surface between the measuring points. The considerable distortion of the measuring object by the measuring instruments is disadvantageous. An array of pressure sensors in a plain below the water surface can be used instead of the gauges to avoid the distortions. The pressure at every single sensor is a measure for the water height above the sensor. The disadvantage of this method is the sensitivity of the pressure sensors for the dynamic pressure of water flows caused by turbulences, in particular in shallow water, underneath breaking waves or close to constructions. Also disadvantageous is the necessity of mounting a part of the measuring system under the water. To avoid this problems, photographic methods for the recording of surface waves have been developed: At the beginning of the 20th century the first attempts have been made to collect elevation data of ocean [...]

Coastal-estuarine and Nearshore Processes

Coastal-estuarine and Nearshore Processes PDF Author: Evelyn Sinha
Publisher:
ISBN:
Category : Coast changes
Languages : en
Pages : 240

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Book Description


Alternative Energy

Alternative Energy PDF Author: Christopher A. Simon
Publisher: Rowman & Littlefield
ISBN: 1538169983
Category : Political Science
Languages : en
Pages : 407

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Book Description
The renewable and alternative energy markets and energy policy have evolved rapidly in recent years. Although a rapidly expanding part of the nation’s energy portfolio, renewable energy will need to grow significantly if a dominant clean energy paradigm is to be achieved. In this fully revised and expanded third edition author Christopher Simon discusses the basic technical aspects of major renewable energy systems and technological developments and considers the impact of politics on energy policy using contemporary theories of public policy, as well as discussing the evolution of the social feasibility of renewable energy. Simon addresses the underlying rationale for alternative energies and how policymaking and innovation function in this arena. In-depth coverage of solar, wind, and geothermal energy, as well as other modern fuels, set the stage for the current challenges around energy storage, reforming the power grid, and artificial intelligence in energy markets. Fully revised to bring the discussion up to date through President Biden’s administration, this edition considers nuclear power developments and feasibility in the post-Fukushima policy environment and addresses current international commitment to renewable energy. Features of the Third Edition include: New Chapter 8: Energy Storage Technology and the Automotive Industry New Chapter 9: Reforming the Power Grid New Chapter 10: Artificial Intelligence and Energy Extensive figures, boxes, and photos to engage readers Fully updated coverage of the legal, regulatory, and legislative context through the Biden administration

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 728

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Book Description


Geography Textbook

Geography Textbook PDF Author: D R Khullar
Publisher: New Saraswati House India Pvt Ltd
ISBN: 9350412411
Category : Science
Languages : en
Pages : 480

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Book Description
A text book on Geography

Bibliography of Scientific and Industrial Reports

Bibliography of Scientific and Industrial Reports PDF Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 922

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Book Description


LiDAR Remote Sensing and Applications

LiDAR Remote Sensing and Applications PDF Author: Pinliang Dong
Publisher: CRC Press
ISBN: 1351233343
Category : Technology & Engineering
Languages : en
Pages : 221

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Book Description
Ideal for both undergraduate and graduate students in the fields of geography, forestry, ecology, geographic information science, remote sensing, and photogrammetric engineering, LiDAR Remote Sensing and Applications expertly joins LiDAR principles, data processing basics, applications, and hands-on practices in one comprehensive source. The LiDAR data within this book is collected from 27 areas in the United States, Brazil, Canada, Ghana, and Haiti and includes 183 figures created to introduce the concepts, methods, and applications in a clear context. It provides 11 step-by-step projects predominately based on Esri’s ArcGIS software to support seamless integration of LiDAR products and other GIS data. The first six projects are for basic LiDAR data visualization and processing and the other five cover more advanced topics: from mapping gaps in mangrove forests in Everglades National Park, Florida to generating trend surfaces for rock layers in Raplee Ridge, Utah. Features Offers a comprehensive overview of LiDAR technology with numerous applications in geography, forestry and earth science Gives necessary theoretical foundations from all pertinent subject matter areas Uses case studies and best practices to point readers to tools and resources Provides a synthesis of ongoing research in the area of LiDAR remote sensing technology Includes carefully selected illustrations and data from the authors' research projects Before every project in the book, a link is provided for users to download data

Coastal Engineering 2002

Coastal Engineering 2002 PDF Author: Jane McKee Smith
Publisher: World Scientific
ISBN: 9789812382382
Category : Science
Languages : en
Pages : 1340

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Book Description
This book contains more than 300 papers presented at the 28th International Conference on Coastal Engineering, held in Cardiff, Wales, in July 2002. It is divided into five parts: coastal waves; nearshore currents, swash, and long waves; coastal structures; sediment transport; and coastal morphology, beach nourishment, and coastal management. The papers cover a broad range of topics, including theory, numerical and physical modeling, field measurements, case studies, design, and management. Coastal Engineering 2002 provides engineers, scientists, and planners with state-of-the-art information on coastal engineering and coastal processes.

U.S. Government Research & Development Reports

U.S. Government Research & Development Reports PDF Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1368

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Earth Resources

Earth Resources PDF Author:
Publisher:
ISBN:
Category : Astronautics in earth sciences
Languages : en
Pages : 758

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Book Description