Landslide Hazard Modeling in Ventura and Santa Barbara Counties, California Using Multi-tiered Geospatial Data Analysis

Landslide Hazard Modeling in Ventura and Santa Barbara Counties, California Using Multi-tiered Geospatial Data Analysis
Author: Reni Bibriven Lila
Publisher:
Total Pages: 260
Release: 2018
Genre: Geographic information systems
ISBN:

Population growth and sprawling urbanization have resulted in higher perturbations of susceptible landscapes and more people and infrastructure exposed to hazardous landslides in southern California. This, in turn, has resulted in an increase in both frequency and magnitude of landslide disasters in the region. Landslides impact thousands of people and damage billions of dollars of infrastructure each year. Mitigation and response to these disasters can be difficult and expensive especially when reliable, high-resolution risk and hazard exposure maps are rarely available to local planners and managers at scales that can be efficiently utilized for local decision-making. Several methods for assessing landslide hazards have been proposed and implemented over the years. However, a portable, high-resolution method of assessing and visualizing landslide risk and hazard exposure remains elusive. This research provides a two-step method, enabled by geographic information systems (GIS) and multi-criteria quantitative analysis, to produce a high-resolution spatial analysis of both geophysical landslide risk and landslide hazard exposure for the built environment. Phase I of this study develops and deploys a GIS-based method for landslide risk assessment using selected geophysical attributes, including past landslide and wildfire experience, to model landslide risk within the study area of Ventura County and Santa Barbara County, California. Phase II leverages the high-resolution quantitative risk results from Phase I to develop a landslide hazard exposure model that illustrates the likelihood of landslides interacting with features of the built environment within the study area. The resulting hazard exposure model provides a reliable, efficient ranking of potential landslide hazard exposure for each building parcel within the study area based on the integrated geophysical risk model, the geomorphological attributes of the study area and the spatial density of the built environment. This research demonstrates that, by leveraging a multi-tiered modeling process that involved both primary and secondary data, Geoscientists and hazards managers can develop high-resolution landslide risk and hazard assessments suitable for land-use and settlement planning at the local scale. In applying this approach, hazard exposure mapping can play a renewed role in assessing areas with high landslide hazards and helping mitigate the associated risks.

Annual Report

Annual Report
Author: California. Landslide Hazard Identification Program
Publisher:
Total Pages: 12
Release: 1986
Genre: Geological mapping
ISBN:

Partnerships for Reducing Landslide Risk

Partnerships for Reducing Landslide Risk
Author: National Research Council
Publisher: National Academies Press
Total Pages: 143
Release: 2004-03-15
Genre: Science
ISBN: 0309166322

Landslides occur in all geographic regions of the nation in response to a wide range of conditions and triggering processes that include storms, earthquakes, and human activities. Landslides in the United States result in an estimated average of 25 to 50 deaths annually and cost $1 to 3 billion per year. In addition to direct losses, landslides also cause significant environmental damage and societal disruption. Partnerships for Reducing Landslide Risk reviews the U.S. Geological Survey's (USGS)National Landslide Hazards Mitigation Strategy, which was created in response to a congressional directive for a national approach to reducing losses from landslides. Components of the strategy include basic research activities, improved public policy measures, and enhanced mitigation of landslides. This report commends the USGS for creating a national approach based on partnerships with federal, state, local, and non-governmental entities, and finds that the plan components are the essential elements of a national strategy. Partnerships for Reducing Landslide Risk recommends that the plan should promote the use of risk analysis techniques, and should play a vital role in evaluating methods, setting standards, and advancing procedures and guidelines for landslide hazard maps and assessments. This report suggests that substantially increased funding will be required to implement a national landslide mitigation program, and that as part of a 10-year program the funding mix should transition from research and guideline development to partnership-based implementation of loss reduction measures.

Landslide Hazard Assessment Using GIS

Landslide Hazard Assessment Using GIS
Author: Mowen Xie
Publisher: Alpha Science International, Limited
Total Pages: 0
Release: 2014
Genre: Science
ISBN: 9781842657706

Landslide hazard assessment has become a major concern for the mountain area development. Geographic Information Systems (GIS), with its excellent spatial data process ability, has attracted a great attention in natural disaster assessment. This book discusses, the GIS-based landslide hazard assessment, which is one of geotechnical engineering approaches based on the physical term, is considered as an acceptable method for analyzing the safety factor of the landslide and for mapping three-dimensionally and probabilistically landslide hazard. Combining the GIS grid-based data with four proposed column-based models of 3D slope stability analysis, correspondent GIS grid-based 3D deterministic models have been devised to calculate the safety factor of the slope. Based on the four GIS-based 3D slope stability analysis models, a GIS-based program, 3DSlopeGIS, has been developed to implement the algorithm where the whole of the input data is in the same form as the GIS dataset. Using the GIS grid-based 3D deterministic model and taking the slope unit as the mapping unit, the 3D safety factor index and failure probability are used for mapping landslide hazard. The method has been applied to some case study on three-dimensionally and probabilistically mapping landslide hazard.

Landslide Hazard in a Changing Environment

Landslide Hazard in a Changing Environment
Author: Davide Tiranti
Publisher: Frontiers Media SA
Total Pages: 137
Release: 2019-04-03
Genre:
ISBN: 2889457931

Landslides are one of the most dangerous geomorphological processes, responsible for losses of human lives and damages to structures, infrastructures, cultural and natural heritage. During the Anthropocene, impacts of human activity on the environment, including recent climate changes, have caused deep alterations to the natural evolution of surficial geologic processes, causing a progressive increase in in the occurrence of landslides. The goal of this Research Topic is to provide an updated overview of the progress in the field of landslide research, covering all the aspects related to the geological event: geomorphological characterization and understanding of triggering and predisposing factors, new technologies applied to the study of evolution of slope phenomena, new methodologies to foresee and mitigate landslide hazards.

Understanding and Reducing Landslide Disaster Risk

Understanding and Reducing Landslide Disaster Risk
Author: Binod Tiwari
Publisher: Springer Nature
Total Pages: 504
Release: 2020-12-22
Genre: Nature
ISBN: 3030607062

This book is a part of ICL new book series “ICL Contribution to Landslide Disaster Risk Reduction” founded in 2019. Peer-reviewed papers submitted to the Fifth World Landslide Forum were published in six volumes of this book series. This book contains the followings: • Five keynote lectures • Recent development in physical modeling of landslides • Recent development in numerical modeling of landslides • Recent development in soil and rock testing techniques, application and analysis methods • Recent advancements in the methods of slope stability and deformation analyses • Recent development in disaster risk assessment Prof. Binod Tiwari is a Vice President of the International Consortium on Landslides (ICL). He is the Associate Vice President for research and sponsored project and Professor of civil and environmental engineering at the California State University, Fullerton, California, USA. Prof. Kyoji Sassa is the Founding President and the Secretary-General of the International Consortium on Landslides (ICL). He has been the Editor-in-Chief of International Journal Landslides since its foundation in 2004. Prof. Peter Bobrowsky is the President of the International Consortium on Landslides. He is a Senior Scientist of Geological Survey of Canada, Ottawa, Canada. Prof. Kaoru Takara is the Executive Director of the International Consortium on Landslides. He is a Professor and Dean of Graduate School of Advanced Integrated Studies (GSAIS) in Human Survivability (Shishu-Kan), Kyoto University.

Quantitative Landslide Hazard Assessment with Remote Sensing Observations and Statistical Modelling

Quantitative Landslide Hazard Assessment with Remote Sensing Observations and Statistical Modelling
Author: Romy Schlögel
Publisher:
Total Pages: 0
Release: 2015
Genre:
ISBN:

The analysis of landslide inventories is the basis for quantitative hazard assessment. Landslide inventory maps are prepared using conventional methods (field surveys, visual interpretation of aerial photographs) and new remote sensing techniques. One of the most promising techniques for landslide detection and mapping is related to the measurement of the ground deformation by satellite radar interferometry (InSAR).This doctoral thesis is dedicated to the preparation of a multi-date inventory, from multi-source data, including InSAR, for a quantitative assessment of landslide hazard. The methods associate the analysis of Earth Observation products and statistical modelling for the characterization of landslide hazard in a rural and mountainous region of the South French Alps. They have been developed at the slope (1:5000-1:2000) and the regional (1:25.000-1:10.000) scales. For the creation of a multi-date inventory, this study developed a combined interpretation of time series of SAR images, aerial photographs, geomorphological maps, historical reports and field surveys. At the slope-scale, a geomorphologically-guided methodology using InSAR was proposed to identify landslide displacement patterns and measure their kinematic evolution. At regional scale, spatio-temporal distribution of landslides is characterised and hazard is assessed by computing spatial and temporal probabilities of occurrence for a given intensity of the phenomena. The spatial occurrence is evaluated using a multivariate model (logistic regression). The temporal occurrence of landslide is estimated with a Poisson probability model to compute exceedance probabilities for several return periods. Different mapping units were used in the modelling, and their influence on the results is discussed. Analysis of landslide hazard is then proposed for some particular hotspots. Relationships between landslide (re)activations and triggering factors are envisaged.

Understanding and Reducing Landslide Disaster Risk

Understanding and Reducing Landslide Disaster Risk
Author: Fausto Guzzetti
Publisher: Springer Nature
Total Pages: 494
Release: 2020-12-22
Genre: Nature
ISBN: 3030602273

This book is a part of ICL new book series “ICL Contribution to Landslide Disaster Risk Reduction” founded in 2019. Peer-reviewed papers submitted to the Fifth World Landslide Forum were published in six volumes of this book series. This book contains the followings: • Keynotes • Landslide detection, recognition and mapping • Landslide susceptibility assessment and modelling • Landslide size statistics and temporal modelling • Data and information for landslide disaster mitigation • Vulnerability to landslides of people, communities and the built environment Dr. Fausto Guzzetti is General Director of Office III – Technical and Scientific Activities for Risk Forecasting and Prevention, Department of Civil Protection, Italian Presidency of the Council of Ministers, on leave from the Italian National Research Council. Prof. Snježana Mihalić Arbanas is a Full Professor of the Faculty of Mining, Geology and Petroleum Engineering of the University of Zagreb, Croatia. She is the Chair of ICL Network Committee. Paola Reichenbach is a Senior Researcher of the Research Institute for Geo-Hydrological Protection, an institute of the Italian National Research Council (IRPI-CNR), Perugia, Italy. Prof. Kyoji Sassa is the Founding President and the Secretary-General of the International Consortium on Landslides (ICL). He has been the Editor-in-Chief of International Journal Landslides since its foundation in 2004. Prof. Peter Bobrowsky is the President of the International Consortium on Landslides. He is a Senior Scientist of Geological Survey of Canada, Ottawa, Canada. Prof. Kaoru Takara is the Executive Director of the International Consortium on Landslides. He is a Professor and Dean of Graduate School of Advanced Integrated Studies (GSAIS) in Human Survivability (Shishu-Kan), Kyoto University.

Landslide: Susceptibility, Risk Assessment and Sustainability

Landslide: Susceptibility, Risk Assessment and Sustainability
Author: Gopal Krishna Panda
Publisher: Springer
Total Pages: 0
Release: 2024-06-13
Genre: Nature
ISBN: 9783031565908

The book illustrates a geospatial and geostatistical approach to data analysis, modeling, risk assessment, and visualization, as well as landslide hazard management in the hilly region. This book investigates cutting-edge methodologies based on open source software and R statistical programming and modeling in current decision-making procedures, with a particular emphasis on recent advances in data mining techniques and robust modeling in torrential rainfall and earthquake induced landslide hazard.

Landslide Hazard and Risk

Landslide Hazard and Risk
Author: Thomas Glade
Publisher: John Wiley & Sons
Total Pages: 824
Release: 2006-01-04
Genre: Science
ISBN: 0470012641

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.