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 17 of 17 for “"Geomorphic Processes"”.
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The Influence of Fluvial Geomorphic Processes on Spatial Patterns of Forest Primary Succession
… in the southeastern US. I hypothesized that geomorphic processes associated with river planform cause patterns of tree species to vary predictably along point bars as well as with increasing age of land during forest primary succession. By mapping trees and seedlings I determined that common …
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Analysis of Paleoindian Site Structure and Toolstone Procurement at the Overlook Site (26CH3413), Churchill County, Nevada
… (2) components of the lithic assemblage; and (3) geomorphic processes. These data suggest that cultural and geomorphic processes affect the horizontal distribution of artifacts, eliminating observable internal structure at the site. The assemblage at the site suggests that the manufacture of …
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Distribution of Invasive Plant Species on Debris Cones at Mount Rainier National Park
… the debris cone disturbances and associated geomorphic processes to facilitate movement within the park. Vegetation transects were performed along Stevens Canyon Road (to observe the roadside community composition) and on the debris cone features (to observe species movement from the …
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Signatures of land-ocean interactions in coastal morphology
… populated regions on Earth. Quantifying surface processes is essential for understanding large-scale landscape development and source-to-sink models, which rely on parameterized representations of environmental factors. Recent studies increasingly integrate empirical datasets into predictive …
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Select geomorphological components of wildlife habitat in the ridge and valley province of Virginia
… for use by natural resource professionals. Most geomorphic processes operate on longer time scales than the life spans of organisms that inhabit a landscape. So, it is the shape of the land surface, not formative processes that are considered in most environmental sciences. Terrain molds and is …
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Effect of Urbanization on the Hyporheic Zone: Lessons from the Virginia Piedmont
… use sediment hydraulic conductivity and stream geomorphic complexity (vertical undulation of thalweg, channel sinuosity) as metrics of the potential for hyporheic exchange (hyporheic potential). Our results include bivariate plots that relate urbanization (e.g., total percent impervious) with …
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Using high-resolution topography for advancing the understanding of mass and energy transfer across landscapes
… in the observation and analysis of these processes, especially as the resolution of these data is proportionate to channel and hillslope process scales. Channel feature extraction algorithms supply a method with which to analyze hydrologic and geomorphic processes; automatic, open-source …
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Multibeam echosounding as a tool for mapping geologic features, bathymetry and modern vents, Yellowstone National Park, Wyoming
… for study due to the broad range of geologic and geomorphic agents that have sculpted this terrain over time. This research employed a multibeam echosounder (MBES) in Lewis Lake and Yellowstone Lake, in August 2011, to describe and interpret the geologic and geomorphic processes that have shaped …
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The impact of dams, droughts, and tributary drainages on channel form and process : Rio Grande and Rio Chama, NM
… and related parameters. Over the last century, geomorphic processes along the Middle Rio Grande and one of its major tributaries, the Rio Chama, NM, have been altered by intensified land and water management and climate change. Using a GIS, channel characteristics were digitized from …
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Dynamic river networks drive landscape change and biological evolution
… they flow through. My thesis investigates the processes that govern the dynamics of river basins and the ways in which these processes may influence the evolution of aquatic life. In Chapters 1-3 of my thesis I investigate river network reorganization, a phenomenon that occurs when some river …
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Biogeomorphic processes and archaeological site formation in Absaroka Mountains of northwestern Wyoming
… with pocket gopher behavioral patterns and geomorphic processes to better understand the affect of burrowing and sediment relocation on cultural material. Geospatial analysis was used to identify topographic controls on burrow placement. The physical characteristics of flaked stone recovered …
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GEOARCHAEOLOGICAL AND PALAEOENVIRONMENTAL RECONSTRUCTION OF THE HOLOCENE CLIMATE-ENVIRONMENTAL-HUMAN NEXUS IN THEKURDISTAN REGION OF IRAQ
… between active tectonic and climatic-driven processes that affected landforms and fluvial development during the Neogene and the Quaternary. Moreover, a detail geomorphological investigation performed on the historical imagery permits to reconstruct the dynamic of local rivers and the …
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Overcoming unrealistic behavior of landscape evolution models attributed to the stream power incision model: Scale invariance and ultra-sensitivity to initial conditions
… these models were conceptual ideas of how geomorphic processes create the landscapes we see today. Now, we predominantly use numerical models of landscape evolution to investigate how large-scale landforms behave over long timescales. These models are typically reduced in complexity, where …
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Denudation processes in a tectonically active rift on different time scales
… or geothermal systems. The study of extensional processes and the factors that further modify the mainly climate-driven surface process regime helps to identify changes in past and present tectonic and geomorphic processes that are ultimately recorded in rift landscapes. The Cenozoic East African …
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Bio-physical controls on tidal network geomorphology
… and thus are seen to depict similar erosional processes. To the contrary, meandering networks clearly depart from this relationship, and show particular segregation in their aspect ratios with respect to dendritic networks. Globally, differentiation on network morphometric properties has been …
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Remote sensing for geomorphic and hydrodynamic modeling and process understanding
River discharge and geomorphic processes controlling floodplain-river interactions are fundamental measures of fluvial geomorphology and important inputs and considerations for hydrodynamic modeling. Due to our anthropogenic dependency and interconnection with rivers, humans have developed …