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Book Synopsis Storm-induced Slope Failure Susceptibility Mapping by : Omid Mohseni
Download or read book Storm-induced Slope Failure Susceptibility Mapping written by Omid Mohseni and published by . This book was released on 2018 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: A pilot study was conducted to characterize and map the areas susceptible to slope failure using state-wide available data. The objective was to determine whether it would be possible to provide slope-failure susceptibility mapping that could be used by local road and highway officials to understand better where slope failure may occur. This would allow the possibility of taking preventative measures where indicated, or developing contingency plans for areas of likely failure. As a first step, a review of pertinent slope-failure literature was conducted to determine which past studies could offer information or guidance useful for developing the mapping. The review helped identify which methods and factors could be most effectively used in assessing susceptibility to slope failure. Then, using physics-based concepts, and making use of publicly-available topographic, soils, and hydrologic information, an approach was developed for using the data to identify conditions under which slope failure would be likely. This approach was incorporated into a GIS-based model that produced mapping wherein slopes were identified and assigned one of five levels (very high to very low) of slopefailure susceptibility. The model was tested against a relatively small area in Carlton County to confirm that the indicated susceptibility to failure correlated well with locations in which there was observable or documented slope failure. The method was then validated by applying it to small areas in Sibley and Carver Counties where slope failures had occurred. Having validated the underlying physics-based approach, the mapping was then expanded to two Carlton and Sibley Counties.
Book Synopsis Rainfall-induced Slope Failure by : Md Aminul Islam (Ph.D.)
Download or read book Rainfall-induced Slope Failure written by Md Aminul Islam (Ph.D.) and published by . This book was released on 2022 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Globally, slope failures cause substantial death tolls and economic loss. Embankments constructed on high plasticity clay are vulnerable to cyclic swelling and shrinkage when subjected to climate. Thus, over time, soil softens and reduces effective shear strength, and shrinkage cracks on slopes can act as pathways for rainfall infiltration, which increases pore water pressure and lowers the shear strength below critical levels, resulting in slope failure. This study aims to develop early warning criteria for rainfall-induced slope failure. Study areas were Tarrant, Dallas, Johnson, and Ellis, where soil types and a humid subtropical climate result in frequent slope failures. The field study was conducted on a 260 ft section of a highway slope (3H:1V) located over US 287 near Midlothian, TX. The test slope sections were instrumented using moisture sensors, temperature sensors, water potential sensors, and a rain gauge. According to the geotechnical investigation, there are two distinct soil strata: top 22 feet high plasticity clay (CH), followed by Eagle Ford Shale. Hydraulic conductivity and shear strength of soils fluctuated seasonally. Field tests using the Guelph Permeameter and Mini-Disk Infiltrometer showed 100 times higher permeability at the surface than at two feet below ground due to loosen and porous soil at the surface. As measured by Dynamic Cone Penetration (DPC) tests, soil shear strength was higher in the dry season and lower in the wet season. According to field instrumentation, soil moisture content and soil matric suction change with depth throughout the year: surface soil experiences more changes than deeper soils. Water content fluctuates most at the top sensors (10%) than at the deeper levels (3%). During the dry season, soil matric suction increased, but decreased after each rainfall. A slope failure inventory map for the DFW area was developed based on previous literature, thesis, and Google Earth analyses. Seventy percent of failure events were observed on highways built in high plasticity clay soils in Tarrant and Dallas counties, where the Eagle Ford Shale predominates. A susceptibility map was developed for the study area based on the slope failure inventory, geology, and topography data. Based on the frequency ratio (FR) method, slope, soil, elevation, aspect, curvature, profile curvature, plan curvature, normalized vegetation index, and soil moisture index were weighted. According to the map, there are five levels of susceptibility: very low, low, moderate, high, and very high. The slope failure susceptibility model demonstrated a success rate of 71.54% and a prediction rate of 70.12%. Slope failures tend to increase with increased rainfall. Empirical thresholds such as Intensity-duration (ID), Event rainfall-duration (ED), Event rainfall-intensity (EI), daily rainfall-antecedent rainfall (3, 5, 10, and 30 days) were established. The numerical study (seepage and slope stability) demonstrated that rainfall duration has a significant impact on rainfall-induced slope failure. A high-intensity rainfall can lead to a drastic drop in pore-water pressure in a short period of time, resulting in slope failure much faster than a low-intensity rain. The slope becomes more vulnerable to failure if it cracks and faces a higher rainfall intensity. Based on a numerical simulation of a field slope section, site-specific thresholds of rainfall intensity and duration were developed and can be used to prevent slope failure caused by rainfall. The numerical model successfully replicated the failed field section at the edge of the study area which failed in 2020. Empirical thresholds predicted the failure as well. Therefore, the established thresholds may be a useful tool for regional slope failure warning systems to predict rainfall-induced slope failure.
Book Synopsis Leonardo by : Leonhard Johannes Blesius
Download or read book Leonardo written by Leonhard Johannes Blesius and published by . This book was released on 2002 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Landslide Susceptibility Mapping Through Enhanced Dynamic Slope Stability Analysis Using Earth Observing Satellite Measurements by : Ram Lakhan Ray
Download or read book Landslide Susceptibility Mapping Through Enhanced Dynamic Slope Stability Analysis Using Earth Observing Satellite Measurements written by Ram Lakhan Ray and published by . This book was released on 2009 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Earthquake-Induced Landslides by : Keizo Ugai
Download or read book Earthquake-Induced Landslides written by Keizo Ugai and published by Springer Science & Business Media. This book was released on 2012-10-25 with total page 955 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismicity is a major trigger for landslides with often devastating effects. The Japan Landslide Society (JLS) therefore organized a meeting fully dedicated to the research area of earthquake induced landslides. The symposium covers all aspects of earthquake-induced landslides including the phenomena occurred in manmade embankments as well as in natural slopes in mountainous areas. In this comprehensive volume on landslide science the JLS presents the Proceedings of this First International Symposium on Earthquake-Induced Landslides, held in November 2012 in Kiryu, Japan.
Book Synopsis Rainfall-Induced Soil Slope Failure by : Lulu Zhang
Download or read book Rainfall-Induced Soil Slope Failure written by Lulu Zhang and published by CRC Press. This book was released on 2018-09-03 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rainfall-induced landslides are common around the world. With global climate change, their frequency is increasing and the consequences are becoming greater. Previous studies assess them mostly from the perspective of a single discipline—correlating landslides with rainstorms, geomorphology and hydrology in order to establish a threshold prediction value for rainfall-induced landslides; analyzing the slope’s stability using a geomechanical approach; or assessing the risk from field records. Rainfall Induced Soil Slope Failure: Stability Analysis and Probabilistic Assessment integrates probabilistic approaches with the geotechnical modeling of slope failures under rainfall conditions with unsaturated soil. It covers theoretical models of rainfall infiltration and stability analysis, reliability analysis based on coupled hydro-mechanical modelling, stability of slopes with cracks, gravels and spatial heterogenous soils, and probabilistic model calibration based on measurement. It focuses on the uncertainties involved with rainfall-induced landslides and presents state-of-the art techniques and methods which characterize the uncertainties and quantify the probabilities and risk of rainfall-induced landslide hazards. Additionally, the authors cover: The failure mechanisms of rainfall-induced slope failure Commonly used infiltration and stability methods The infiltration and stability of natural soil slopes with cracks and colluvium materials Stability evaluation methods based on probabilistic approaches The effect of spatial variability on unsaturated soil slopes and more
Book Synopsis Spatial Modeling in GIS and R for Earth and Environmental Sciences by : Hamid Reza Pourghasemi
Download or read book Spatial Modeling in GIS and R for Earth and Environmental Sciences written by Hamid Reza Pourghasemi and published by Elsevier. This book was released on 2019-01-18 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatial Modeling in GIS and R for Earth and Environmental Sciences offers an integrated approach to spatial modelling using both GIS and R. Given the importance of Geographical Information Systems and geostatistics across a variety of applications in Earth and Environmental Science, a clear link between GIS and open source software is essential for the study of spatial objects or phenomena that occur in the real world and facilitate problem-solving. Organized into clear sections on applications and using case studies, the book helps researchers to more quickly understand GIS data and formulate more complex conclusions. The book is the first reference to provide methods and applications for combining the use of R and GIS in modeling spatial processes. It is an essential tool for students and researchers in earth and environmental science, especially those looking to better utilize GIS and spatial modeling. Offers a clear, interdisciplinary guide to serve researchers in a variety of fields, including hazards, land surveying, remote sensing, cartography, geophysics, geology, natural resources, environment and geography Provides an overview, methods and case studies for each application Expresses concepts and methods at an appropriate level for both students and new users to learn by example
Book Synopsis GIS-based Approaches to Slope Stability Analysis and Earthquake-induced Landslide Hazard Zonation by : Huayang Luo
Download or read book GIS-based Approaches to Slope Stability Analysis and Earthquake-induced Landslide Hazard Zonation written by Huayang Luo and published by . This book was released on 2006 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This dissertation presents newly developed GIS-based deterministic and probabilistic approaches for slope stability analysis and earthquake-induced landslide hazard zonation. The described approaches combine numerical slope stability analysis with GIS spatial analysis to evaluate earthquake-induced slope failures, both shallow and deep-seated. The study has four major research components. The first component is a GIS-based procedure which was developed based on one-, two-, and three-dimensional (1D, 2D, and 3D) deterministic approaches to slope stability analysis and landslide hazard zonation. Slope stability methods in the GIS-based procedure included the infinite slope model, the block sliding model, the ordinary method of slices, the Bishop simplified method, and the Hovland's column method. The second component focuses on causative factors analysis of earthquake-induced landslide hazards. This component also discusses the determination of peak ground acceleration for slope stability analysis. The third component consists of an evaluation of the topographic effect of ground motion and the seismic response in the Balsamo Ridge area in Nueva San Salvador. The fourth component is concerned with the regional and site-specific landslide hazard zonation, using newly developed models for landslide hazard assessment in Nueva San Salvador. The slope stability and landslide susceptibility were mapped in terms of slope stability index (factor of safety, critical acceleration, Newmark displacement, failure probability, and reliability index). The landslides triggered by an earthquake on January 13, 2001 in El Salvador provide a setting for the calibration of results from GIS-based approaches. The procedures developed in this research proved to be feasible and cost-effective for slope stability analysis and earthquake-induced landslide hazard zonation"--Leaf iii.
Book Synopsis Rainfall-Induced Soil Slope Failure by : Lulu Zhang
Download or read book Rainfall-Induced Soil Slope Failure written by Lulu Zhang and published by CRC Press. This book was released on 2018-09-03 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rainfall-induced landslides are common around the world. With global climate change, their frequency is increasing and the consequences are becoming greater. Previous studies assess them mostly from the perspective of a single discipline—correlating landslides with rainstorms, geomorphology and hydrology in order to establish a threshold prediction value for rainfall-induced landslides; analyzing the slope’s stability using a geomechanical approach; or assessing the risk from field records. Rainfall Induced Soil Slope Failure: Stability Analysis and Probabilistic Assessment integrates probabilistic approaches with the geotechnical modeling of slope failures under rainfall conditions with unsaturated soil. It covers theoretical models of rainfall infiltration and stability analysis, reliability analysis based on coupled hydro-mechanical modelling, stability of slopes with cracks, gravels and spatial heterogenous soils, and probabilistic model calibration based on measurement. It focuses on the uncertainties involved with rainfall-induced landslides and presents state-of-the art techniques and methods which characterize the uncertainties and quantify the probabilities and risk of rainfall-induced landslide hazards. Additionally, the authors cover: The failure mechanisms of rainfall-induced slope failure Commonly used infiltration and stability methods The infiltration and stability of natural soil slopes with cracks and colluvium materials Stability evaluation methods based on probabilistic approaches The effect of spatial variability on unsaturated soil slopes and more
Book Synopsis Landslides and Engineered Slopes. Experience, Theory and Practice by : Stefano Aversa
Download or read book Landslides and Engineered Slopes. Experience, Theory and Practice written by Stefano Aversa and published by CRC Press. This book was released on 2018-04-17 with total page 2224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Landslides and Engineered Slopes. Experience, Theory and Practice contains the invited lectures and all papers presented at the 12th International Symposium on Landslides, (Naples, Italy, 12-19 June 2016). The book aims to emphasize the relationship between landslides and other natural hazards. Hence, three of the main sessions focus on Volcanic-induced landslides, Earthquake-induced landslides and Weather-induced landslides respectively, while the fourth main session deals with Human-induced landslides. Some papers presented in a special session devoted to "Subareal and submarine landslide processes and hazard” and in a “Young Session” complete the books. Landslides and Engineered Slopes. Experience, Theory and Practice underlines the importance of the classic approach of modern science, which moves from experience to theory, as the basic instrument to study landslides. Experience is the key to understand the natural phenomena focusing on all the factors that play a major role. Theory is the instrument to manage the data provided by experience following a mathematical approach; this allows not only to clarify the nature and the deep causes of phenomena but mostly, to predict future and, if required, manage similar events. Practical benefits from the results of theory to protect people and man-made works. Landslides and Engineered Slopes. Experience, Theory and Practice is useful to scientists and practitioners working in the areas of rock and soil mechanics, geotechnical engineering, engineering geology and geology.
Book Synopsis Semi-quantitative Approaches for Landslide Assessment and Prediction by : Sujit Mandal
Download or read book Semi-quantitative Approaches for Landslide Assessment and Prediction written by Sujit Mandal and published by Springer. This book was released on 2014-11-07 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the present authors attempted to have a clear insight into the interworking of geotectonic, geomorphic, hydrologic and anthropogenic factors leading to landslide in the Shiv khola Watershed, the most worst affected region of Darjiling Himalaya. This book includes the parameters responsible for landslide events in mountainous areas. It provides knowledge and understanding to the local people, planners, and policy makers about the causes and consequences of landslides as well as provides a suitable method to mitigate the landslips. The book deals with the role of land, water and soil in landslide phenomena. These three attributes have been described in terms of critical rainfall, critical slope, critical height and changes and development of drainage network in landslides. Mitigations and site-specific management options are evaluated considering the roles of local govt., community and other organizations in both pre-slide and post-slide periods. Various scientific methods have been used to assess the landslides that will bring about tremendous help to researchers in the field. In particular, Researchers in Mountain Geomorphology and Geological and Geographical Society will get tremendous help from some topics such as 1-D slope stability model, SCS Curve Number Technique, Assessment of morphological parameters, application of RS & GIS, Application of Analytical Hierarchy Process. Semi-quantitative approach is followed for understanding spatial distribution of cohesion, friction angle slope, lithology and lineaments, drainage, upslope contributing area, land use and land cover types etc. This book also reveals some techniques and models for initiating slope instability.
Book Synopsis Susceptibility to Slope Failure and Development Suitability Near Highway 79 in the Hermosa NW and Hermosa Quadrangles, Pennington County by : Matthew David Minnick
Download or read book Susceptibility to Slope Failure and Development Suitability Near Highway 79 in the Hermosa NW and Hermosa Quadrangles, Pennington County written by Matthew David Minnick and published by . This book was released on 2008 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: A slope stability analysis was performed to create factor-of-safety maps to assess slope failure susceptibility in areas of future land development in the Hermosa NW and Hermosa 7.5 minute quadrangles in Pennington County. Funding was provided by the Penning County Commission in a partnership with the South Dakota School of Mines & Technology, and RESPEC. The slope stability analysis included an existing slide inventory, aerial mapping, soil core sampling, soils laboratory testing, limit equilibrium modeling, and geographic information system (GIS) spatial analysis. The existing slide inventory was required to assess current and past failure conditions in areas prone to slope failure. Digital orthoquad imagery, a low-level plane survey, and extensive field global positioning system (GPS) mapping were used to produce the slide inventory. Eight suitable sampling sites were selected on the basis of geologic formation, accessibility, and land ownership approval. Shelby tube samples were collected up to 25 feet deep at each sample location using a 4"auger on a truck-mounted drilling rig. Geotechnical laboratory tests were performed on soil cores in depth-specific increments yielding 24 analyses including unit weight, plasticity indices, and direct shear tests to acquire cohesion and friction angle values. Limit equilibrium models were built in slope stability analysis software using profiles gathered from field GPS mapping and United States Geological Survey 10-meter digital elevation model data. Models were run for unsaturated and saturated conditions. Factor-of-safety trend models were built to correlate geology and slope. Raster files of the slope angle and geology were created, reclassified, and added together, and correlated with the factor of safety trend models to generate factor of safety maps in GIS. Spatial model accuracy was verified using the existing slide inventory. Results indicated that the Cretaceous Graneros Group rocks were most susceptible to slope failure under current conditions, particularly the Skull Creek and Belle Fourche Shale formations. The Mowry Shale member and the Upper Cretaceous Carlile Formation were less prone to failure but became susceptible with added stresses. Results were used along with the geologic map aquifer susceptibility, surface water, and soil engineering properties data, to create a multivariate development suitability model, named the Black Hills Development Suitability Risk model, or BH-DSR model. The BH-DSR model is in use by the Pennington County Planning Commission to help them make informed decisions on the impact to development from natural hazards and the impact of development on the environment.
Book Synopsis New Publications of the U.S. Geological Survey by :
Download or read book New Publications of the U.S. Geological Survey written by and published by . This book was released on 1989 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Landslide Hazard and Risk by : Thomas Glade
Download or read book Landslide Hazard and Risk written by Thomas Glade and published by John Wiley & Sons. This book was released on 2006-01-04 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the increasing need to take an holistic view of landslide hazard and risk, this book overviews the concept of risk research and addresses the sociological and psychological issues resulting from landslides. Its integrated approach offers understanding and ability for concerned organisations, landowners, land managers, insurance companies and researchers to develop risk management solutions. Global case studies illustrate a variety of integrated approaches, and a concluding section provides specifications and contexts for the next generation of process models.
Book Synopsis Geographic Information Systems for Geoscientists by : Graeme F. Bonham-Carter
Download or read book Geographic Information Systems for Geoscientists written by Graeme F. Bonham-Carter and published by Elsevier. This book was released on 2014-05-18 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geographic Information Systems for Geoscientists: Modelling with GIS provides an introduction to the ideas and practice of GIS to students and professionals from a variety of geoscience backgrounds. The emphasis in the book is to show how spatial data from various sources (principally paper maps, digital images and tabular data from point samples) can be captured in a GIS database, manipulated, and transformed to extract particular features in the data, and combined together to produce new derived maps, that are useful for decision-making and for understanding spatial interrelationship. The book begins by defining the meaning, purpose, and functions of GIS. It then illustrates a typical GIS application. Subsequent chapters discuss methods for organizing spatial data in a GIS; data input and data visualization; transformation of spatial data from one data structure to another; and the combination, analysis, and modeling of maps in both raster and vector formats. This book is intended as both a textbook for a course on GIS, and also for those professional geoscientists who wish to understand something about the subject. Readers with a mathematical bent will get more out of the later chapters, but relatively non-numerate individuals will understand the general purpose and approach, and will be able to apply methods of map modeling to clearly-defined problems.
Book Synopsis Terrigenous Mass Movements by : Biswajeet Pradhan
Download or read book Terrigenous Mass Movements written by Biswajeet Pradhan and published by Springer Science & Business Media. This book was released on 2012-04-02 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Terrestrial mass movements (i.e. cliff collapses, soil creeps, mudflows, landslides etc.) are severe forms of natural disasters mostly occurring in mountainous terrain, which is subjected to specific geological, geomorphological and climatological conditions, as well as to human activities. It is a challenging task to accurately define the position, type and activity of mass movements for the purpose of creating inventory records and potential vulnerability maps. Remote sensing techniques, in combination with Geographic Information System tools, allow state-of-the-art investigation of the degree of potential mass movements and modeling surface processes for hazard and risk mapping. Similarly, through statistical prediction models, future mass-movement-prone areas can be identified and damages can to a certain extent be minimized. Issues of scale and selection of morphological attributes for the scientific analysis of mass movements call for new developments in data modeling and spatio-temporal GIS analysis. The book is a product of a cooperation between the editors and several contributing authors, addressing current issues and recent developments in GI technology and mass movements research. Its fundamental treatment of this technology includes data modeling, topography, geology, geomorphology, remote sensing, artificial neural networks, binomial regression, fuzzy logic, spatial statistics and analysis, and scientific visualization. Both theoretical and practical issues are addressed.
Book Synopsis Bibliography of United States Landslide Maps and Reports by : Christopher S. Alger
Download or read book Bibliography of United States Landslide Maps and Reports written by Christopher S. Alger and published by . This book was released on 1985 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
