Download or read book Sediment Flux and Trapping on the Skagit Tidal Flats written by and published by . This book was released on 2010 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long-term objective is to determine the hydrodynamic processes controlling sediment transport and the associated morphologic response on tidal flats. The objectives of our research program were: * quantify the influence of barotropic (tidal) convergence on the lower Skagit tidal flats as a mechanism of sediment trapping and creation of ephemeral mud and sand deposits; * determine the role of density fronts in creating and transporting high concentration sediment suspensions, and assess the influence of these processes on sediment deposition and short-term morphological change; * distinguish the influence of wave-induced sediment transport from tidal/fluvial processes, and determine how variations in tidal, fluvial and wind/wave forcing alter the bedform geometry, transport pathways, surficial sediment characteristics and tide-flat morphology.
Download or read book Tide and Wave generated Sediment Transport in a Shallow Tidal Channel and Adjacent Tidal Flat written by Alyson Day and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tidal Flat Sedimentation at Cooley Landing S w San Francisco Bay written by Raymond Pestrong and published by . This book was released on 1969* with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tidal marsh and mud flat sedimentation is being studied on portions of the southwestern side of San Francisco Bay. Sediments transported and deposited within this low energy environment are distributed in accordance with a principle of scour and settling lag proposed for sediments in the North Sea. The finer sediments are concentrated nearer the higher portions of the tidal flats and marshes where lower ebb flow velocities are unable to transport them farther bayward. Greater quantities of bedload sediment are moved on the flood than on the ebb portions of the tidal cycle both on the tidal flat and through the marsh channel system. A sediment budget is maintained within the tidal marshes, whereby the growth of the tidal channels accompanies the extension of the marsh onto the tidal flat. This development is documented on aerial photographs taken during a six-year period. Higher shear strengths and densities are displayed by the slightly elevated tidal channel levees than are present for the adjacent mud flats because of the longer periods of desiccation the levees experience. X-radiologic studies of near-surface tidal flat mud slabs show sedimentary structures not apparent in photographs, and suggest penecontemporaneous deformation of the muds. (Author).
Download or read book Estuarine and Coastal Hydrography and Sediment Transport written by R. J. Uncles and published by Cambridge University Press. This book was released on 2017-08-17 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical guide to the latest techniques to measure sediments, seabed, water and transport mechanisms in estuaries and coastal waters. Covering a broad range of topics, enough background is included to explain how each technology functions. A review of recent fieldwork experiments demonstrates how modern methods apply in real-life scenarios.
Download or read book Principles of Tidal Sedimentology written by Richard A. Davis Jr. and published by Springer Science & Business Media. This book was released on 2011-10-20 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive, contemporary review of tidal environments and deposits. Individual chapters, each written by world-class experts, cover the full spectrum of coastal, shallow-marine and even deep-marine settings where tidal action influences or controls sediment movement and deposition. Both siliciclastic and carbonate deposits are covered. Various chapters examine the dynamics of sediment transport by tides, and the morphodynamics of tidal systems. Several chapters explore the occurrence of tidal deposits in the stratigraphic context of entire sedimentary basins. This book is essential reading for both coastal geologists and managers, and geologists interested in extracting hydrocarbons from complex tidal successions.
Download or read book Sea Level Rise for the Coasts of California Oregon and Washington written by National Research Council and published by National Academies Press. This book was released on 2012-12-06 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tide gauges show that global sea level has risen about 7 inches during the 20th century, and recent satellite data show that the rate of sea-level rise is accelerating. As Earth warms, sea levels are rising mainly because ocean water expands as it warms; and water from melting glaciers and ice sheets is flowing into the ocean. Sea-level rise poses enormous risks to the valuable infrastructure, development, and wetlands that line much of the 1,600 mile shoreline of California, Oregon, and Washington. As those states seek to incorporate projections of sea-level rise into coastal planning, they asked the National Research Council to make independent projections of sea-level rise along their coasts for the years 2030, 2050, and 2100, taking into account regional factors that affect sea level. Sea-Level Rise for the Coasts of California, Oregon, and Washington: Past, Present, and Future explains that sea level along the U.S. west coast is affected by a number of factors. These include: climate patterns such as the El Niño, effects from the melting of modern and ancient ice sheets, and geologic processes, such as plate tectonics. Regional projections for California, Oregon, and Washington show a sharp distinction at Cape Mendocino in northern California. South of that point, sea-level rise is expected to be very close to global projections. However, projections are lower north of Cape Mendocino because the land is being pushed upward as the ocean plate moves under the continental plate along the Cascadia Subduction Zone. However, an earthquake magnitude 8 or larger, which occurs in the region every few hundred to 1,000 years, would cause the land to drop and sea level to suddenly rise.
Download or read book River Discharge to the Coastal Ocean written by John D. Milliman and published by Cambridge University Press. This book was released on 2013-03-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rivers provide the primary link between land and sea. Utilizing the world's largest database, this book presents a detailed analysis and synthesis of the processes affecting fluvial discharge of water, sediment and dissolved solids. The ways in which climatic variation, episodic events, and anthropogenic activities - past, present and future - affect the quantity and quality of river discharge are discussed in the final two chapters. The book contains 26 tables and more than 165 figures - many in full color - including global and regional maps. The book's extensive appendix presents the 1534-river database as a series of 44 tables and 132 maps that provide quantitative data regarding the discharge of water, sediment and dissolved solids. The complete database is also presented within a GIS-based package available online at www.cambridge.org/milliman. River Discharge to the Coastal Ocean provides an invaluable resource for researchers, professionals and graduate students in hydrology, oceanography, geology, geomorphology and environmental policy.
Download or read book Modeling and Practice of Erosion and Sediment Transport under Change written by Mohamed Meddi and published by MDPI. This book was released on 2019-09-17 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate and anthropogenic changes impact the conditions of erosion and sediment transport in rivers. Rainfall variability and, in many places, the increase of rainfall intensity have a direct impact on rainfall erosivity. Increasing changes in demography have led to the acceleration of land cover changes in natural areas, as well as in cultivated areas, and, sometimes, in degraded areas and desertified landscapes. These anthropogenized landscapes are more sensitive to erosion. On the other hand, the increase in the number of dams in watersheds traps a great portion of sediment fluxes, which do not reach the sea in the same amount, nor at the same quality, with consequences on coastal geomorphodynamics. This book is dedicated to studies on sediment fluxes from continental areas to coastal areas, as well as observation, modeling, and impact analysis at different scales from watershed slopes to the outputs of large river basins. This book is concentrated on a number of keywords: “erosion” and “sediment transport”, “model” and “practice”, and “change”. The keywords are briefly discussed with respect to the relevant literature. The contributions in this book address observations and models based on laboratory and field data, allowing researchers to make use of such resources in practice under changing conditions.
Download or read book Oceanography written by J. J. Bhatt and published by . This book was released on 1978 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: A basic oceanography textbook offers information on the marine environment with an emphasis on the principles, processes, and properties of the oceans.
Download or read book The Ecogeomorphology of Tidal Marshes written by Sergio Fagherazzi and published by American Geophysical Union. This book was released on 2004-01-09 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Located between sea and land, salt marshes are complex environments that provide critical ecosystem functions, such as production of organic material and nutrient cycling. This book examines the geomorphology of salt marshes with emphasis on the interaction between landscape and biota.
Download or read book Coastal Habitats of the Elwha River Washington written by Jeffrey J. Duda and published by . This book was released on 2011 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oceanic Abstracts with Indexes written by and published by . This book was released on 1979 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Global Climate Change Impacts in the United States written by U.S. Global Change Research Program and published by Cambridge University Press. This book was released on 2009-08-24 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summarizes the science of climate change and impacts on the United States, for the public and policymakers.
Download or read book Oceanography of the British Columbia Coast written by Richard E. Thomson and published by . This book was released on 1981 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the physical aspects of the sea as exemplified by the Pacific Ocean and the contiguous waters of the British Columbia coast. Although principally devoted to waves, currents and tides, the book spans a broad spectrum of topics ranging from meteorology and marine biology to past and present marine geology. It attempts to elucidate the nature of oceanic motions and to relate them to everyday experience for the general interest of the casual reader and for the practical benefit of the professional mariner, scientist, or engineer.
Download or read book Botanical Evidence of Floods and Flood plain Deposition written by Robert Sumner Sigafoos and published by . This book was released on 1964 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of California Weed Science Society written by California Weed Science Society and published by . This book was released on 1994 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trials and Tribulations of Life on an Active Subduction Zone written by Shahin Dashtgard and published by Geological Society of America. This book was released on 2014-10-01 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Nine field guides explore diverse topics such as urban geology and geoheritage in Metro Vancouver, the processes and postglacial adjustments of the Cordilleran Ice Sheet, and human interaction and adaptation to geological and climate changes in British Columbia"--
