Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 143 for “"post-fire"”.
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Post-fire Mechanical Properties of Aluminum Alloys and Aluminum Welds
The focus of this research was to quantify the post-fire mechanical properties of 5083-H116 and 6082-T6 aluminum alloys. Post-fire exposure is considered heating the material to a particular temperature then cooling the material back to room temperature. The research included evaluating parent …
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Stress-induced Damage and Post-fire Response of Aluminum Alloys
… alloys is their mechanical performance in fire scenarios. The material strength may be degraded due to both thermal and mechanical damage during fire exposure. This work emphasizes the stress-induced mechanical (physical) damage and its impact on the residual (post-fire) performance of …
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Post-fire vegetation and bird habitat use in piñon-juniper woodlands
Global climate change has caused fire activity and behavior to shift from historical norms due to hotter and drier conditions. Although the ecological effects of changing fire regimes have been explored in many systems, the resilience of some forest types, such as piñon-juniper, are often …
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Evaluating post-fire woody mulch effects on soil and stream nitrogen
Severe wildfires often increase nitrogen (N) loss from burned watersheds, impacting downstream water quality, water treatability, and aquatic habitat. Woody mulch is commonly applied to mitigate soil erosion and enhance revegetation post-fire, but it also provides a source of labile carbon (C) that …
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Post-Fire Sedimentation and the Risk to Sierra Nevada Water Supply
… by the growing risk of large, severe wildfires and in turn so are the water supplies that they support. This paper addresses how these large fires facilitate sediment transport by removing soil’s vegetative and organic matter layers, changing soil properties, and inducing soil water …
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Risk Assessment of Post-Fire Floods on Dams and Their Floodplains
… their impacts. In Southwest United States, wildfires are increasing in frequency and magnitude. The literature review shows limited studies in evaluating the impacts of post-wildfire floods on civil infrastructures and residential zones. Earth dams are vulnerable to post-wildfire floods. The …
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Flammability traits of fynbos species with different post-fire regeneration strategies
Wild fire is an important disturbance regime that shape global biome distributions and maintain the structure, function and biological diversity of plant communities in fire-prone environments. Physical, chemical and architectural properties are known to affect plant flammability, but few studies …
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Estimating pre-fire forest structure with stereo imagery and post-fire lidar
… attributes including those used as inputs for fire behavior and effects modelling. However, lidar is rarely available to document pre-fire conditions due to its sparse availability. In contrast, aerial imagery is regularly collected in many regions, and advances in stereo image matching have …
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Ecosystem Consequences of Post-Fire Invasive Species in the Great Basin Desert
… United States. Promoted by overgrazing and fire, this invasion is rapidly converting large expanses of native sagebrush to post-fire invasive communities. The objective of this research was to test the general hypothesis that plant cover controls ecosystem function by quantifying the effect …
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Evaluating Post-fire Vegetation Recovery in Canadian Mixed Prairie Using Remote Sensing Approaches
This study investigated a wildfire occurred in April 2013 at Grasslands National Park, aiming to quantify vegetation's post-fire recovery with both field and remote sensing approaches. Biophysical parameters and hyperspectral reflectances were collected through field surveys conducted one year …
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An analysis of 100 years of post-fire streamflow responses of British Columbia watersheds
Wildfires are becoming larger and more severe due to climate change. This trend is destructive to the forest ecosystem, disrupting many eco-hydrologic processes in forested watersheds. Effects can include rapid runoff responses, increased surface runoff, and elevated erosion, leading to lower water …
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The Effects of Wildfire Burn Severity on Bee and Wasp Communities Two Decades Post-Fire
<p>While fire is a natural disturbance in many global ecosystems, anthropogenic changes are affecting fire frequency, severity, and seasonality. Disturbances like wildfire affect bee and wasp communities, but recent meta-analyses are conflicted about whether fire harms or benefits insect …
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EFFECTIVENESS OF STRAW BALE CHECK DAMS AT REDUCING POST-FIRE SEDIMENT YIELDS FROM EPHEMERAL CHANNEL CATCHMENTS
Increased sedimentation caused by post-fire flooding is a risk to people, homes, and buildings. The USDA Forest Service installs straw bale check dams in ephemeral channels to reduce sedimentation rates from small catchments. We set out to study if straw bale check dams effectively reduce …
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EFFECTIVENESS OF STRAW BALE CHECK DAMS AT REDUCING POST-FIRE SEDIMENT YIELDS FROM EPHEMERAL CHANNEL CATCHMENTS
Increased sedimentation caused by post-fire flooding is a risk to people, homes, and buildings. The USDA Forest Service installs straw bale check dams in ephemeral channels to reduce sedimentation rates from small catchments. We set out to study if straw bale check dams effectively reduce …
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Leveraging the Landsat archive to characterize plant species diversity and post-fire recovery in Great Basin shrublands
… ecosystems, driven primarily by increased wildfire activity. Post-fire vegetation recovery trajectories vary spatially and temporally and are influenced by the effects of topography, climate, soils, and pre-fire vegetation. Our study leverages spatially continuous Landsat data alongside spatial …
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Post-fire Response of Little Creek Watershed: Evaluation of Change in Sediment Production and Suspended Sediment Transport
… production the first year following the Lockheed Fire in 2009. The amount and volume of near-stream sediment sources were found to decrease, while an increase in hillslope sediment production was documented. High intensity, short duration rainfall (up to 87 mm/hr for 10 minute duration) initiated …
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