Alluvial Fans

Author : Adrian M. Harvey,Anne E. Mather,Martin R. Stokes
Publisher : Geological Society of London
Page : 258 pages
File Size : 46,8 Mb
Release : 2005
Category : Science
ISBN : 1862391890

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Alluvial Fans by Adrian M. Harvey,Anne E. Mather,Martin R. Stokes Pdf

Alluvial fans are important sedimentary environments. They trap sediment delivered from mountain source areas, and exert an important control on the delivery of sediment to downstream environments, to axial drainages and to sedimentary basins. They preserve a sensitive record of environmental change within the mountain source areas. Alluvial fan geomorphology and sedimentology reflect not only drainage basin size and geology, but change in response to tectonic, climatic and base-level controls. One of the challenges facing alluvial fan research is to resolve how these gross controls are reflected in alluvial fan dynamics and to apply the results of studies of modern fan processes and Quaternary fans to the understanding of sedimentary sequences in the rock record. This volume includes papers based on up-to-date research, and focuses on three themes: alluvial fan processes, dynamics of Quaternary alluvial fans and fan sedimentary sequences. Linking the papers is an emphasis on the controls of fan geomorphology, sedimentology and dynamics. This provides a basis for integration between geomorphological and sedimentological approaches, and an understanding how fluvial systems respond to tectonic, climatic and base-level changes.

Author : Dan Bowman
Publisher : Springer
Page : 0 pages
File Size : 50,6 Mb
Release : 2018-11-21
Category : Science
ISBN : 9402415564

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Principles of Alluvial Fan Morphology by Dan Bowman Pdf

This book offers a comprehensive overview of the alluvial fan phenomena, including all terminology, morphology, sedimentology, controlling factors, processes and the human impact. It combines the knowledge dispersed widely in existing literature with regional case studies, color figures and photographs. The chapters provide a useful basis to understand alluvial fans and a selection of papers attached to each chapter offers additional, more focused reading. This volume is aimed at engineers, planners and especially students in earth sciences.

Author : National Research Council,Division on Earth and Life Studies,Commission on Geosciences, Environment and Resources,Committee on Alluvial Fan Flooding
Publisher : National Academies Press
Page : 183 pages
File Size : 42,7 Mb
Release : 1996-11-07
Category : Science
ISBN : 9780309055420

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Alluvial Fan Flooding by National Research Council,Division on Earth and Life Studies,Commission on Geosciences, Environment and Resources,Committee on Alluvial Fan Flooding Pdf

Alluvial fans are gently sloping, fan-shaped landforms common at the base of mountain ranges in arid and semiarid regions such as the American West. Floods on alluvial fans, although characterized by relatively shallow depths, strike with little if any warning, can travel at extremely high velocities, and can carry a tremendous amount of sediment and debris. Such flooding presents unique problems to federal and state planners in terms of quantifying flood hazards, predicting the magnitude at which those hazards can be expected at a particular location, and devising reliable mitigation strategies. Alluvial Fan Flooding attempts to improve our capability to determine whether areas are subject to alluvial fan flooding and provides a practical perspective on how to make such a determination. The book presents criteria for determining whether an area is subject to flooding and provides examples of applying the definition and criteria to real situations in Arizona, California, New Mexico, Utah, and elsewhere. The volume also contains recommendations for the Federal Emergency Management Agency, which is primarily responsible for floodplain mapping, and for state and local decisionmakers involved in flood hazard reduction.

Author : R.H. French
Publisher : Elsevier
Page : 243 pages
File Size : 45,9 Mb
Release : 1987-06-01
Category : Technology & Engineering
ISBN : 0080870228

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Hydraulic Processes on Alluvial Fans by R.H. French Pdf

Alluvial fans are among the most prominent landscape features in the American Southwest and throughout the semi-arid and arid regions of the world. The importance of developing a qualitative and quantitative understanding of the hydraulic processes which formed, and which continue to modify, these features derives from their rapid and significant development over the past four decades. As unplanned urban sprawl has moved from valley floors onto alluvial fans, the serious damage incurred from infrequent flow events has dramatically increased. This book presents a concise, coherent discussion of our current and rapidly expanding knowledge of hydraulic processes on alluvial fans. It addresses the subject from a multidisciplinary viewpoint, acquainting the geologist with engineering principles, and the civil engineer and planner with geological principles pertinent to the analysis of hydraulic processes on alluvial fans. The book thus provides much of interest to geologists, civil engineers and planners involved in floodplain management and drainage design in arid and semi-arid regions.

Author : National Research Council,Division on Earth and Life Studies,Commission on Geosciences, Environment and Resources,Committee on Alluvial Fan Flooding
Publisher : National Academies Press
Page : 182 pages
File Size : 54,5 Mb
Release : 1996-10-07
Category : Science
ISBN : 9780309185493

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Alluvial Fan Flooding by National Research Council,Division on Earth and Life Studies,Commission on Geosciences, Environment and Resources,Committee on Alluvial Fan Flooding Pdf

Alluvial fans are gently sloping, fan-shaped landforms common at the base of mountain ranges in arid and semiarid regions such as the American West. Floods on alluvial fans, although characterized by relatively shallow depths, strike with little if any warning, can travel at extremely high velocities, and can carry a tremendous amount of sediment and debris. Such flooding presents unique problems to federal and state planners in terms of quantifying flood hazards, predicting the magnitude at which those hazards can be expected at a particular location, and devising reliable mitigation strategies. Alluvial Fan Flooding attempts to improve our capability to determine whether areas are subject to alluvial fan flooding and provides a practical perspective on how to make such a determination. The book presents criteria for determining whether an area is subject to flooding and provides examples of applying the definition and criteria to real situations in Arizona, California, New Mexico, Utah, and elsewhere. The volume also contains recommendations for the Federal Emergency Management Agency, which is primarily responsible for floodplain mapping, and for state and local decisionmakers involved in flood hazard reduction.

Author : Saeid Pourmorad,Ashutosh Mohanty
Publisher : Springer Nature
Page : 220 pages
File Size : 49,6 Mb
Release : 2022-05-24
Category : Science
ISBN : 9789811920455

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Alluvial Fans in Southern Iran by Saeid Pourmorad,Ashutosh Mohanty Pdf

This book presents a complete set of studies of alluvial fan sediments in southern Iran from the point of view of sedimentology, sedimentary geochemistry, tectonics, economic geology, groundwater, geomorphology, hazards and telemetry. In addition, the book focuses on advanced topics and theory, which practically serves as a model for the study of this type of sediment around the world. Alluvial fans are an important and fundamental factor in many sciences such as geology, environmental science, natural hazards, groundwater science, agriculture and many other related sciences. Lack of accurate knowledge of their constituent sediments has always been an important problem for experts in many science disciplines. From the economic point of view, the identification of alluvial fan deposits is of particular importance. For example, alluvial deposits are the centre of groundwater accumulation, and most groundwater reservoirs within the sedimentary basin are fed by water from alluvial deposits. Most of the gold production in South Africa has been formed as placer deposits in ancient alluvial fans. In addition, a large amount of uranium placer deposits is extracted from old alluvial fans in sedimentary basins in South Africa. This book serves as an ideal guide for experts in earth and environmental sciences and hydrology.

Author : William B. Bull
Publisher : Unknown
Page : 54 pages
File Size : 45,5 Mb
Release : 1964
Category : Geology
ISBN : UCR:31210020742688

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Geomorphology of Segmented Alluvial Fans in Western Fresno County, California by William B. Bull Pdf

A study of the interrelations of alluvial-fan morphology, drainage-basin characteristics and tectonic and climatic events.

Author : Richard E. Giraud
Publisher : Utah Geological Survey
Page : 21 pages
File Size : 49,9 Mb
Release : 2005-06
Category : Science
ISBN : 9781557917294

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Guidelines for the Geologic Evaluation of Debris-flow Hazards on Alluvial Fans in Utah by Richard E. Giraud Pdf

The Utah Geological Survey (UGS) developed these guidelines to help geologists evaluate debris-flow hazards on alluvial fans to ensure safe development. Debris-flow hazard evaluations are particularly important because alluvial fans are the primary sites of debris-flow deposition and are also favored sites for development. The purpose of a debris-flow-hazard evaluation is to characterize the hazard and provide design parameters for risk reduction. The UGS recommends critical facilities and structures for human occupancy not be placed in active debris flow travel and deposition areas unless the risk is reduced to an acceptable level. These guidelines use the characteristics of alluvial fan deposits as well as drainage-basin and feeder-channel sediment-supply conditions to evaluate debris-flow hazards. The hazard evaluation relies on the geomorphology, sedimentology, and stratigraphy of existing alluvial fan deposits. Analysis of alluvial-fan deposits provides the geologic basis for estimating frequency and potential volume of debris flows and describing debris-flow behavior. Drainage-basin and feeder-channel characteristics determine potential debris-flow susceptibility and the volume of stored channel sediment available for sediment bulking in future flows.

Author : Erk Reimnitz,Stephen C. Wolf,Geological Survey (U.S.)
Publisher : Unknown
Page : 22 pages
File Size : 53,5 Mb
Release : 1998
Category : Alluvial fans
ISBN : UCR:31210020799092

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Are North Slope Surface Alluvial Fans Pre-Holocene Relicts? by Erk Reimnitz,Stephen C. Wolf,Geological Survey (U.S.) Pdf

Author : Charles Storrow Denny
Publisher : Unknown
Page : 72 pages
File Size : 47,5 Mb
Release : 1965
Category : Alluvial fans
ISBN : UCR:31210020749022

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Alluvial Fans in the Death Valley Region, California and Nevada by Charles Storrow Denny Pdf

A survey and interpretation of some aspects of desert geomorphology.

Author : Sylvia R. Nicovich,James G. Schmitt,Harrison J. Gray,Ralph E. Klinger,Shannon A. Mahan
Publisher : Geological Society of America
Page : 59 pages
File Size : 45,6 Mb
Release : 2023-10-19
Category : Science
ISBN : 9780813725611

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Construction and Modification of Debris-Flow Alluvial Fans as Captured in the Geomorphic and Sedimentary Record by Sylvia R. Nicovich,James G. Schmitt,Harrison J. Gray,Ralph E. Klinger,Shannon A. Mahan Pdf

Author : William B. Bull
Publisher : Unknown
Page : 88 pages
File Size : 51,8 Mb
Release : 1964
Category : Alluvial fans
ISBN : UCR:31210020748636

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Alluvial Fans and Near-surface Subsidence in Western Fresno County, California by William B. Bull Pdf

A study of compaction caused by water percolating through certain alluvial-fan deposits for the first time since burial.

Author : D. Ventra,L.E. Clarke
Publisher : Geological Society of London
Page : 351 pages
File Size : 54,5 Mb
Release : 2018-07-04
Category : Science
ISBN : 9781786202673

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Geology and Geomorphology of Alluvial and Fluvial Fans by D. Ventra,L.E. Clarke Pdf

Alluvial and fluvial fans are the most widespread depositional landform bordering the margins of highland regions and actively subsiding continental basins, across a broad spectrum of tectonic and climatic settings. They are significant to the local morphodynamics of mountain regions and also to the evolution of sediment-routing systems, affecting the propagation and preservation of stratigraphic signals of environmental change over vast areas. The volume presents case studies discussing the geology and geomorphology of alluvial and fluvial fans from both active systems and ancient ones preserved in the stratigraphic record. It brings together case studies from a range of continents, climatic and tectonic settings, some introducing innovative monitoring and analysis techniques, and it provides an overview of current debates in the field. This volume will be of particular interest to geologists, geomorphologists, sedimentologists and the general reader with an interest in Earth science.

Author : Dan Bowman
Publisher : Springer
Page : 151 pages
File Size : 55,7 Mb
Release : 2018-11-09
Category : Science
ISBN : 9789402415582

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Principles of Alluvial Fan Morphology by Dan Bowman Pdf

This book offers a comprehensive overview of the alluvial fan phenomena, including all terminology, morphology, sedimentology, controlling factors, processes and the human impact. It combines the knowledge dispersed widely in existing literature with regional case studies, color figures and photographs. The chapters provide a useful basis to understand alluvial fans and a selection of papers attached to each chapter offers additional, more focused reading. This volume is aimed at engineers, planners and especially students in earth sciences.

Author : Christian Büdel
Publisher : BoD – Books on Demand
Page : 146 pages
File Size : 54,6 Mb
Release : 2020-10-05
Category : Science
ISBN : 9783958261143

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Quaternary alluvial fan morphodynamics and basin sedimentation in North Iran by Christian Büdel Pdf

Availability of water and desiccation of important water reservoirs is a vital challenge in semi-arid to arid climates with growing economy and population. Low quantities of precipitation and high evaporation rates leave the water supply vulnerable to human activity and climatic variations. Endorheic basins of Northern Iran were hydrologically landlocked within geological timescales and thus bear evidence of past variations of water resources in generations of water related landforms, like abandoned lake level shorelines, alluvial fans and stream terraces. Understanding the development of these landforms reveals crucial information about past water reservoirs and landscape history. This study offers a comprehensive approach on understanding the geomorphological development of the landscape throughout Late Pleistocene and Holocene times. It integrates remote sensing and geographic information system analysis, with geomorphological and stratigraphical mapping fieldwork and detailed sedimentological investigations. The work shows the importance of analytical geomorphological mapping for delineating stratigraphic units of the Iranian Quaternary. Thus, several phases of drying and lake level retreat were identified in parallel geoarchives and could be dated to a time span from today to Late Pleistocene. The findings link the fate of the citizens of the ancient city of "Tepe Hissar" to their access to water and to the power of geomorphological processes, which started changing their environment.