Thesis (M.S.)--California Polytechnic State University, 2008. / Title from PDF title page; viewed on Jan. 7, 2009. "November 20, 2008." "In partial fulfillment of the requirements for the degree [of] Master of Science in Aerospace Engineering." "Presented to the faculty of California Polytechnic State University, San Luis Obispo." Major professor: Daniel J. Biezad, Ph.D. Includes bibliographical references (p. 109-110). Also available on microfiche.

Thesis (M.S.)--Oregon State University, 2004. / Includes bibliographical references (leaves 23-24). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.

Thesis (M.S.)--Oregon State University, 2004. / Includes bibliographical references (leaves 23-24).

abstract: Wildfire is an inescapable feature of Canadian landscapes, burning an average of over two million hectares annually and causing significant repercussions for communities, infrastructure, and resources. Because fire is managed provincially, each jurisdiction has developed a distinctive approach to preparing for, responding to, and recovering from fire on its landscapes. Using a comparative study between seven provinces and four national agencies, this dissertation examines differences in institutional design and policy with respect to the knowledge management systems required to respond to wildfire: How do policies and procedures vary between jurisdictions, how do they affect the practices of each fire management agency, and how can they be improved through a critical analysis of the knowledge management systems in use? And, what is the role of and limits on expertise within these fire management institutions that manage high-risk, highly uncertain socio- environmental challenges? I begin by introducing the 2016 Fort McMurray/Horse River fire as a lens for exploring these questions. I then use the past one hundred years of fire history in Canada to illustrate the continual presence of fire, its human and social dimensions, and the evolution of differing fire management regimes. Drawing on extended ethnographic observation and interviewing of fire managers across Canada, I examine the varied provincial systems of response through following an active fire day in Alberta. I analyze the decision support and geospatial information systems used to guide fire agency decision-making, as well as the factors that limit their effectiveness in both response and hazard reduction modes. I begin Part Two with a discussion of mutual aid arrangements between the provinces, and critically examine the core strategy – interagency fungibility – used to allow this exchange. I analyze forecasting and predictive models used in firefighting, with an emphasis on comparing advantages and disadvantages of attempts at predicting future firefighter capacity requirements. I review organizational learning approaches, considering both fire research strategies and after action reviews. Finally, I consider the implication of changes in climates, politics, and public behaviours and their impacts on fire management. / Dissertation/Thesis / Doctoral Dissertation Human and Social Dimensions of Science and Technology 2018

Postwildfire debris flows are frequently triggered by runoff following high-intensity rainfall, but the physical mechanisms by which water-dominated flows transition to debris flows are poorly understood relative to debris flow initiation from shallow landslides. In this study, we combined a numerical model with high-resolution hydrologic and geomorphic data sets to test two different hypotheses for debris flow initiation during a rainfall event that produced numerous debris flows within a recently burned drainage basin. Based on simulations, large volumes of sediment eroded from the hillslopes were redeposited within the channel network throughout the storm, leading to the initiation of numerous debris flows as a result of the mass failure of sediment dams that built up within the channel. More generally, results provide a quantitative framework for assessing the potential of runoff-generated debris flows based on sediment supply and hydrologic conditions.

A dissertation submitted to the Faculty of Education in fulfilment requirement for the Degree of Master of Education in the Department of Educational Psychology and Special Education at the University of Zululand, South Africa, 2005. / The aim of the study was to conduct a formative investigation into the effectiveness of "Wildfire" as a preventative intervention for HIV/AIDS. "Wildfire" is an experiential activity-based psycho-educational workshop/game that guides participants through the process of 'exposure' to HIV/AIDS, voluntary counseling and testing (VCT). It stimulates discussions and active reflections while imparting knowledge and information that goes beyond preventative awareness campaigns. The target population was Grade 9 learners. A representative sample of rural and township school contexts in the East London area of the Eastern Cape constituted the sites for intervention. The schools selected constituted a convenience sample and learner participation was voluntary, depending on parental permission. A total of 104 learners participated, 95 in the "Wildfire" intervention and 9 in the control group. The methodology applied included a pre- and post-test questionnaire, behavioural observations and verbal responses during the intervention, as well as focus-group notes arising from the debriefing after "Wildfire". The findings indicated that "Wildfire" was an effective and powerful psycho-educational tool for mediating an in-depth understanding of issues around HIV/AIDS and personal vulnerability for adolescents. The triangulation of methods provided evidence that the intended learnings of "Wildfire" were internalized to both group and individual levels. Furthermore, these points of planned learning were sustained over time. "Wildfire" provided psycho-social, emotional and cognitive 'maps' for individuals about how quickly HIV/AIDS can be spread, how to manage 'exposure* and how to treat those infected with the virus. The study was situated within practices of primary health care and prevention of HIV/AIDS. Its relevance to answering research needs and corroborating current research findings has been discussed. The utility of the study for practical purposes, was that it informed the current and future practices of an NGO and provided information for the Education Department which could enrich the effectiveness of its current HIV/AIDS education in a cost-effective way.

No description available.

Remotely sensed MODIS fire detections were used to examine wildfire variability from 2003-2011 in southeast Louisiana, and to determine if the Deepwater Horizon oil spill and hurricanes may have impacted fire frequency and intensity. Despite low wildfire detection rates, around 60% for fires at least 1 km2 or greater, the MODIS fire product provided a consistent and reliable source of wildfire data. As a result of Hurricane Katrina, wildfire detection frequencies doubled their average numbers during the fall of 2005 in inland areas and during the spring of 2006 in inland and coastal marsh areas. Strangely enough, the oil spill may have contributed to lower fire frequencies in the summer of 2010 and spring of 2011 inland. Neither hurricane Katrina nor the oil spill were found to have an effect on fire intensity, and the spatial distribution of wildfires remained relatively constant over the study area after both disasters.

Peat is an accumulation of soil formed from partially decomposed organic matter. Peat can burn, especially in hot, dry weather which is happening more often due to climate change; smouldering releases stored carbon to the atmosphere. Peat that has higher organic bulk density and lower moisture content is more vulnerable to fire: it will burn more severely (more deeply) if ignited. Shallower peat is less able to retain moisture during droughts and is therefore likely more vulnerable to fire; however, mapping peat depths at high spatial resolution is expensive or requires extensive fieldwork. This project uses remote sensing in combination with machine learning to estimate peat depth across a peatland and rock barren landscape. A Random Forest model was used to map peat depths across the landscape at a 1 m spatial resolution using LiDAR data and orthophotography. The resulting map was able to predict peat depths (R2 = 0.73, MAE = 28 cm) and showed that the peat depths which are especially vulnerable to high severity fire are distributed in numerous small patches across the landscape. This project also examined peat bulk density and found that the Von Post scale for peat decomposition can be used as a field method for estimating bulk density (R2 = 0.71). In addition, in this landscape, peat bulk densities at the same depth (within the top 45 cm) are higher in shallower peat because in shallower peat, more decomposed peat was found closer to the surface, and because peat with high mineral content was found close to the bedrock or mineral soil. The findings of this project will be valuable for wildfire managers to determine which areas on the landscape are most vulnerable to fire, allowing them to mobilize resources more rapidly for wildfire suppression. / Thesis / Master of Science (MSc) / Peat is organic soil made from decomposing plant material. Peat can burn, especially in the hot, dry weather which is happening more often due to climate change. Dense, dry peat is more vulnerable to fire: it will burn more deeply. Because it is known that areas with deeper peat can retain moisture better, peat depth can be used as a proxy for vulnerability to fire. Since peat depth is expensive and time consuming to map directly, remotely sensed data such as aerial imagery was used in a model to predict peat depths. The model was able to predict peat depths and displayed that the most vulnerable areas are scattered across the landscape in small patches. This project also found that denser peat is found farther from the surface in deeper peat areas, further supporting the use of peat depth as a proxy for vulnerability to smouldering.

Wildfires result in altered landscape as well as altered soil properties. Wildfires result in conditions that are more susceptible to geotechnical hazards introducing a potential for cascading events in the surrounding area. Shallow landslides are common geohazards that result in a post-wildfire landscape. With an ever-increasing trend in wildfires, the need to better understand the impact wildfire-altered soil properties play on shallow slope instability is critical to evaluating risks to existing or planned development, mitigation of potentially hazardous conditions, prioritization of post-wildfire planning, and post-wildfire response preparation. The primary objective of this study is to provide a comprehensive overview of wildfire-altered geotechnical soil properties and their impact on rainfall-triggered landslides. For this purpose, laboratory and field testing has been performed on soil samples collected from four wildfire areas in California. In-situ hydraulic conductivity tests were performed on both burned and unburned soil. Soil samples collected from burned and unburned areas were tested in for index properties, shear strength, organic content, and pH. Results show that the mean angle of internal friction was reduced in burned soil samples for all study areas, the mean pH, organic content, and hydraulic conductivity were all greater in burned soils in all study areas, and cohesion was found to have contradicting trajectories. Resulting soil properties have been used to compare the factors of safety for representative unburned and burned slopes using a finite element seepage analysis and limit equilibrium slope stability analysis. The unburned and burn soil sample results are used to determine relative factors of safety for slope stability at each of the four wildfire areas. Peak historic and predicted precipitation have been used to further evaluate the relative factors of safety for pre and post-wildfire slope stability conditions. The comparative slope stability analysis has been used to provide a quantitative comparison of the role altered soil properties play on the potential for slope instability. Through this study, it is apparent that although soil properties are altered by wildfire, the impact altered soil properties have on the subsequent slope instability is much less than that of other contributing factors, including precipitation and root support.