Using Digital Elevation Models Derived from Airborne LiDAR and Other Remote Sensing Data to Model Channel Networks and Estimate Fluvial Geomorphological Metrics

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (94 download)

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Book Synopsis Using Digital Elevation Models Derived from Airborne LiDAR and Other Remote Sensing Data to Model Channel Networks and Estimate Fluvial Geomorphological Metrics by : Noah Slovin

Download or read book Using Digital Elevation Models Derived from Airborne LiDAR and Other Remote Sensing Data to Model Channel Networks and Estimate Fluvial Geomorphological Metrics written by Noah Slovin and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in remote-sensing technologies and analysis methods, specifically airborne-LiDAR elevation data and corresponding geographical information system (GIS) tools, present new opportunities for automated and rapid fluvial geomorphic (FGM) assessments that can cover entire watersheds. In this thesis, semi-automated GIS tools are used to extract channel centerlines and bankfull width values from digital elevation models (DEM) for five New England watersheds. For each study site, four centerlines are mapped. LiDAR and NED lines are delineated using ArcGIS spatial analyst tools with high-resolution (1-m to 2-m) LiDAR DEMs or USGS National Elevation Dataset (NED) DEMs, respectively. Resampled LiDAR decreases LiDAR DEM resolution and then runs spatial analyst tools. National Hydrography Dataset (NHD) lines are mapped by the USGS. All mapped lines are compared to centerlines delineated from photography and LiDAR DEMs. Bankfull widths at each site are determined through three methods. Regional regression equations are applied using variables derived from LiDAR and NED DEMs separately, producing two sets of width results. Additionally, the Hydrogeomorphological Geoprocessing Toolset (HGM) is used to extract widths from LiDAR data. Widths are also estimated visually from aerial photos and LiDAR DEMs. Widths measured directly in the field or derived from field-data are used as a baseline for comparison. I find that with a minimal amount of preprocessing, specifically through DEM resampling, LiDAR data can be used to model a channel that is highly correlated with the shape and location of the mapped channel. NED-derived channels model the mapped channel shape with even greater accuracy, and model the channel location only minimally less accurately. No tool used in this study accurately extracted bankfull width values, but analysis of LiDAR data by the HGM toolset did capture details that could not be resolved using regression equations. Overall, I conclude that automated, computerized LiDAR interpretation needs to improve significantly for the expense of data collection to be cost-effective at a watershed scale.

Digital Terrain Modeling

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Publisher : CRC Press
ISBN 13 : 0203486749
Total Pages : 337 pages
Book Rating : 4.2/5 (34 download)

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Book Synopsis Digital Terrain Modeling by : Zhilin Li

Download or read book Digital Terrain Modeling written by Zhilin Li and published by CRC Press. This book was released on 2004-11-29 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by experts, Digital Terrain Modeling: Principles and Methodology provides comprehensive coverage of recent developments in the field. The topics include terrain analysis, sampling strategy, acquisition methodology, surface modeling principles, triangulation algorithms, interpolation techniques, on-line and off-line quality control in data a

Digital Elevation Model Technologies and Applications

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Publisher : American Society for Photogrammetry & Remote Sensing
ISBN 13 :
Total Pages : 688 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Digital Elevation Model Technologies and Applications by : David Francis Maune

Download or read book Digital Elevation Model Technologies and Applications written by David Francis Maune and published by American Society for Photogrammetry & Remote Sensing. This book was released on 2007 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: This DE Users Manual is designed to help potential users of digital elevation data understand and articulate their requirements in a way that their expectations are satisfied. if you have a dream that DEM's can help you do a better job, or you need to know more about DEM technologies and applications then this manual is for you.

Generating Digital Terrain Models From Aerial LIDAR Using Convolutional Neural Networks

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (951 download)

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Book Synopsis Generating Digital Terrain Models From Aerial LIDAR Using Convolutional Neural Networks by : Brian Pugh

Download or read book Generating Digital Terrain Models From Aerial LIDAR Using Convolutional Neural Networks written by Brian Pugh and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Presently, airborne LIDAR data measures the elevation of the highest point observed rather than the underlying bare-earth elevation. Digital Terrain Model generation from LIDAR poses an important problem in remote sensing. Many solutions rely on labeling and removing non-ground data points and interpolating the unmeasured ground from the surrounding ground points. In this paper we show that a feed-forward convolutional neural network can be successfully trained and used to directly discover the underlying terrain model from collected LIDAR data.

Treatise on Geomorphology

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Publisher : Academic Press
ISBN 13 : 0080885225
Total Pages : 6392 pages
Book Rating : 4.0/5 (88 download)

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Book Synopsis Treatise on Geomorphology by :

Download or read book Treatise on Geomorphology written by and published by Academic Press. This book was released on 2013-02-27 with total page 6392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changing focus and approach of geomorphic research suggests that the time is opportune for a summary of the state of discipline. The number of peer-reviewed papers published in geomorphic journals has grown steadily for more than two decades and, more importantly, the diversity of authors with respect to geographic location and disciplinary background (geography, geology, ecology, civil engineering, computer science, geographic information science, and others) has expanded dramatically. As more good minds are drawn to geomorphology, and the breadth of the peer-reviewed literature grows, an effective summary of contemporary geomorphic knowledge becomes increasingly difficult. The fourteen volumes of this Treatise on Geomorphology will provide an important reference for users from undergraduate students looking for term paper topics, to graduate students starting a literature review for their thesis work, and professionals seeking a concise summary of a particular topic. Information on the historical development of diverse topics within geomorphology provides context for ongoing research; discussion of research strategies, equipment, and field methods, laboratory experiments, and numerical simulations reflect the multiple approaches to understanding Earth’s surfaces; and summaries of outstanding research questions highlight future challenges and suggest productive new avenues for research. Our future ability to adapt to geomorphic changes in the critical zone very much hinges upon how well landform scientists comprehend the dynamics of Earth’s diverse surfaces. This Treatise on Geomorphology provides a useful synthesis of the state of the discipline, as well as highlighting productive research directions, that Educators and students/researchers will find useful. Geomorphology has advanced greatly in the last 10 years to become a very interdisciplinary field. Undergraduate students looking for term paper topics, to graduate students starting a literature review for their thesis work, and professionals seeking a concise summary of a particular topic will find the answers they need in this broad reference work which has been designed and written to accommodate their diverse backgrounds and levels of understanding Editor-in-Chief, Prof. J. F. Shroder of the University of Nebraska at Omaha, is past president of the QG&G section of the Geological Society of America and present Trustee of the GSA Foundation, while being well respected in the geomorphology research community and having won numerous awards in the field. A host of noted international geomorphologists have contributed state-of-the-art chapters to the work. Readers can be guaranteed that every chapter in this extensive work has been critically reviewed for consistency and accuracy by the World expert Volume Editors and by the Editor-in-Chief himself No other reference work exists in the area of Geomorphology that offers the breadth and depth of information contained in this 14-volume masterpiece. From the foundations and history of geomorphology through to geomorphological innovations and computer modelling, and the past and future states of landform science, no "stone" has been left unturned!

Environmental Applications of Digital Terrain Modeling

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Publisher : John Wiley & Sons
ISBN 13 : 1118936213
Total Pages : 290 pages
Book Rating : 4.1/5 (189 download)

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Book Synopsis Environmental Applications of Digital Terrain Modeling by : John P. Wilson

Download or read book Environmental Applications of Digital Terrain Modeling written by John P. Wilson and published by John Wiley & Sons. This book was released on 2018-04-23 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: A digital elevation model (DEM) is a digital representation of ground surface topography or terrain. It is also widely known as a digital terrain model (DTM). A DEM can be represented as a raster (a grid of squares) or as a vector based triangular irregular network (TIN). DEMs are commonly built using remote sensing techniques, but they may also be built from land surveying. DEMs are used often in geographic information systems, and are the most common basis for digitally-produced relief maps. The terrain surface can be described as compromising of two different elements; random and systematic. The random (stochastic) elements are the continuous surfaces with continuously varying relief. It would take an endless number of points to describe exactly the random terrain shapes, but these can be described in practice with a network of point. It is usual to use a network that creates sloping triangles or regular quadrants. This book examines how the methods and data sources used to generate DEMs and calculate land surface parameters have changed over the past 25 years. The primary goal is to describe the state-of-the-art for a typical digital terrain modeling workflow that starts with data capture, continues with data preprocessing and DEM generation, and concludes with the calculation of one or more primary and secondary land surface parameters. Taken as a whole, this book covers the basic theory behind the methods, the instrumentation, analysis and interpretation that are embedded in the modern digital terrain modeling workflow, the strengths and weaknesses of the various methods that the terrain analyst must choose among, typical applications of the results emanating from these terrain modeling workflows, and future directions. This book is intended for researchers and practitioners who wish to use DEMs, land surface parameters, land surface objects and landforms in environmental projects. The book will also be valuable as a reference text for environmental scientists who are specialists in related fields and wish to integrate these kinds of digital terrain workflows and outputs into their own specialized work environments.

Point Density Effects on Digital Elevation Models Generated from LiDAR Data

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ISBN 13 :
Total Pages : 57 pages
Book Rating : 4.:/5 (424 download)

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Book Synopsis Point Density Effects on Digital Elevation Models Generated from LiDAR Data by :

Download or read book Point Density Effects on Digital Elevation Models Generated from LiDAR Data written by and published by . This book was released on 2009 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of Airborne LiDAR Systems (ALS) to obtain topographical information of the earth's surface and generate Digital Elevation Models (DEMs) has grown extensively in the field of Remote Sensing. Selected areas of point cloud LiDAR data collected from Honduras in 2008 was used to produce DEMs with varying densities to show the effects of lower resolution LiDAR data. An IDL code was utilized to reduce the selected LiDAR point cloud data to 90%, 66%, 50%, 30%, 10%, 5%, 3%, 1%, 0.5%, 0.3%, 0.1%, 0.05%, 0.03%, and 0.01% of its original density to obtain lower resolution data sets. The software Quick Terrain Modeler (QTM) and its ILAP Bare Earth Extractor Plug-in was used to generate DEMs from the varying point cloud density data sets and the software ENVI was used to perform DEM analysis. It was found that LiDAR point cloud density data set of at least 0.6 points per square meter is necessary to generate an accurate Digital Elevation Model for the test environment.

The Need for a High-Accuracy, Open-Access Global Digital Elevation Model

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Publisher : Frontiers Media SA
ISBN 13 : 2889663345
Total Pages : 111 pages
Book Rating : 4.8/5 (896 download)

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Book Synopsis The Need for a High-Accuracy, Open-Access Global Digital Elevation Model by : Guy Jean-Pierre Schumann

Download or read book The Need for a High-Accuracy, Open-Access Global Digital Elevation Model written by Guy Jean-Pierre Schumann and published by Frontiers Media SA. This book was released on 2020-12-31 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.

Elevation Models for Geoscience

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Publisher : Geological Society of London
ISBN 13 : 9781862393134
Total Pages : 158 pages
Book Rating : 4.3/5 (931 download)

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Book Synopsis Elevation Models for Geoscience by : Cory Fleming

Download or read book Elevation Models for Geoscience written by Cory Fleming and published by Geological Society of London. This book was released on 2010 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elevation data are a critical element in most geoscience applications. From geological mapping to modelling Earth systems and processes geologists need to understand the shape of the Earth's surface. Vast amounts of digital elevation data exist, from large-scale global to smaller scale regional datasets, and many datasets have been merged to improve scale and accuracy. For each application, decisions are made on which elevation data to use driven by cost, resolution and accuracy. This publication shows the current status of available digital elevation data and illustrates the key applications. The types of data assessed include: ASTER stereo satellite imagery, Shuttle Radar Topographic Mapping data, airborne laser and radar such as NEXTMap, and Multibeam Bathymetry. Applications covered include: glacial deposits, landslides, coastal erosion and other geological hazards. Technical issues discussed include: accuracy analysis, derived product creation, software comparisons and copyright considerations. This volume is a comprehensive look at elevation models for geoscience.

Remote Sensing and Hydrologic Modeling of Arid Watersheds

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Publisher :
ISBN 13 :
Total Pages : 198 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Remote Sensing and Hydrologic Modeling of Arid Watersheds by : Thomas W. Gardner

Download or read book Remote Sensing and Hydrologic Modeling of Arid Watersheds written by Thomas W. Gardner and published by . This book was released on 1990 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Geomorphological Mapping

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Publisher : Elsevier
ISBN 13 : 0444535365
Total Pages : 635 pages
Book Rating : 4.4/5 (445 download)

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Book Synopsis Geomorphological Mapping by : Mike J. Smith

Download or read book Geomorphological Mapping written by Mike J. Smith and published by Elsevier. This book was released on 2011-10-22 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geomorphological Mapping: a professional handbook of techniques and applications is a new book targeted at academics and practitioners who use, or wish to utilise, geomorphological mapping within their work. Synthesising for the first time an historical perspective to geomorphological mapping, field based and digital tools and techniques for mapping and an extensive array of case studies from academics and professionals active in the area. Those active in geomorphology, engineering geology, reinsurance, Environmental Impact Assessors, and allied areas, will find the text of immense value. - Growth of interest in geomorphological mapping and currently no texts comprehensively cover this topic - Extensive case studies that will appeal to professionals, academics and students (with extensive use of diagrams, potentially colour plates) - Brings together material on digital mapping (GIS and remote sensing), cartography and data sources with a focus on modern technologies (including GIS, remote sensing and digital terrain analysis) - Provides readers with summaries of current advances in methodological/technical aspects - Accompanied by electronic resources for digital mapping

Examining Development-induced Geomorphic Change Using Multi-temporal LiDAR-derived Digital Elevation Models

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Publisher :
ISBN 13 :
Total Pages : 338 pages
Book Rating : 4.:/5 (918 download)

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Book Synopsis Examining Development-induced Geomorphic Change Using Multi-temporal LiDAR-derived Digital Elevation Models by : Daniel Kyle Jones

Download or read book Examining Development-induced Geomorphic Change Using Multi-temporal LiDAR-derived Digital Elevation Models written by Daniel Kyle Jones and published by . This book was released on 2013 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: During development, topography is cut, filled, and graded, altering natural surface drainage patterns. The spatiotemporal characteristics of drainage network and hillslope changes throughout the development process are to date unknown. For this study we used multiple temporal LiDAR-derived DEMs spanning the development of two small agricultural watersheds to examine geomorphic changes caused by urban development. A third forested watershed was also examined to track geomorphic changes not attributable to development. We first present a technique to extract drainage channel heads and drainage networks through time utilizing surface tangential curvature and compare its ability to predict field verified channel heads against two other delineation techniques. Second, subwatersheds of the delineated networks were used to summarize topographic changes in the forested and developing watersheds through time. Finally, simplified hydrologic response functions are generated for each time step utilizing width functions augmented by the curvature delineated networks. Landscape dissection and hydrologicconnectivity increased throughout development, indicating an increased efficiency of water removal from the landscape. Substantial topographic changes manifest as variations in curvature standard deviations through time in first order catchments, highlighting redistribution of high and low gradient regions. Idealized hydrologic responses reflect increased landscape connectivity with a distinct shift toward more rapid storm response shapes throughout the development process. Unexpectedly high temporal variance observed in the forested watershed across analyses indicates inherent differences in temporal digital topographic datasets. Results of this thesis highlight fundamental geomorphic changes caused by development practices while developing methods and rationale for temporal DEM-based geomorphic studies.

The Influence of Post-spacing Density of DEMS Derived from LIDAR on Flood Modeling

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Publisher :
ISBN 13 :
Total Pages : 105 pages
Book Rating : 4.:/5 (616 download)

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Book Synopsis The Influence of Post-spacing Density of DEMS Derived from LIDAR on Flood Modeling by : Pierre Gueudet

Download or read book The Influence of Post-spacing Density of DEMS Derived from LIDAR on Flood Modeling written by Pierre Gueudet and published by . This book was released on 2004 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:

River Science

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Publisher : John Wiley & Sons
ISBN 13 : 1119994349
Total Pages : 430 pages
Book Rating : 4.1/5 (199 download)

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Book Synopsis River Science by : David J. Gilvear

Download or read book River Science written by David J. Gilvear and published by John Wiley & Sons. This book was released on 2016-05-02 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: River Science is a rapidly developing interdisciplinary field at the interface of the natural sciences, engineering and socio-political sciences. It recognises that the sustainable management of contemporary rivers will increasingly require new ways of characterising them to enable engagement with the diverse range of stakeholders. This volume represents the outcome of research by many of the authors and their colleagues over the last 40 years and demonstrates the integral role that River Science now plays in underpinning our understanding of the functioning of natural ecosystems, and how societal demands and historic changes have affected these systems. The book will inform academics, policy makers and society in general of the benefits of healthy functioning riverine systems, and will increase awareness of the wide range of ecosystem goods and services they provide.

Riparian Management Area Guidebook

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Publisher : Forest Service British Columbia
ISBN 13 : 9780772627483
Total Pages : 68 pages
Book Rating : 4.6/5 (274 download)

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Book Synopsis Riparian Management Area Guidebook by : BC Environment

Download or read book Riparian Management Area Guidebook written by BC Environment and published by Forest Service British Columbia. This book was released on 1995-01-01 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Helps managers, planners and field staff set and comply with Forest Practices Code standards for management of riparian management areas (RMAs).

The National Hydrography Dataset

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Publisher :
ISBN 13 :
Total Pages : 2 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis The National Hydrography Dataset by :

Download or read book The National Hydrography Dataset written by and published by . This book was released on 1999 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Generating Stream Maps Using LiDAR Derived Digital Elevation Models and 10-m USGS DEM

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Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (713 download)

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Book Synopsis Generating Stream Maps Using LiDAR Derived Digital Elevation Models and 10-m USGS DEM by : Adam Mouton

Download or read book Generating Stream Maps Using LiDAR Derived Digital Elevation Models and 10-m USGS DEM written by Adam Mouton and published by . This book was released on 2005 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: