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 24 for “"fluvial processes"”.
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Fluvial processes, beaver activity, and climate in the greater Yellowstone ecosystem and rock type control on hillslope morphology and soil development in the Sandia Mountains, New Mexico
… 1 is submitted to the journal Earth Surface Processes and Landforms. Chapter 2 will be submitted to the journal Climatic Change soon after this dissertation is published. Chapter 3 is already published in the journal Quaternary Research (November, 2011). Chapter 1 explores differences between …
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Stratigraphy and Site Formation at the Sanders Site (45 KT 315), Kittitas County, Washinton
… and is the result of the interaction of fluvial, aeolian and colluvial processes. Periods of landform stability are marked by soil formation. Sediments preserved on-site appear to contain a relatively complete record of the Holocene, whereas across the creek at 45KT726, the earlier …
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Periglacial Geomorphological Mapping of the Comanche Peak Area . Mummy Range, Larimer County, Colorado
… and periglacial landforms have been modified by fluvial processes.
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Spatial Drivers of Ecosystem Structure and Function in a Floodplain Riverscape: Springbrook Nutrient Dynamics
On riverine floodplains, reorganization by fluvial processes creates and maintains a mosaic of aquatic and riparian landscape elements across a biophysical gradient of disturbance and succession. I hypothesized that ecosystem processes in spring brooks would differ spatially across biophysical …
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Spatial Drivers of Ecosystem Structure and Function in a Floodplain Riverscape: Springbrook Nutrient Dynamics
On riverine floodplains, reorganization by fluvial processes creates and maintains a mosaic of aquatic and riparian landscape elements across a biophysical gradient of disturbance and succession. I hypothesized that ecosystem processes in spring brooks would differ spatially across biophysical …
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Pre-vegetation alluvium: Geological evidence for river behaviour in the absence of land plants
… of river behaviour and the ways in which fluvial processes operated on ancient Earth and other rocky planets. This study presents five original fieldwork based case studies and an analysis of a holistic database of all of Earth’s pre-vegetation alluvium. Together these research strands …
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Investigating rates and mechanisms of lateral erosion in a small bedrock river using erosion pins, structure-from-motion photogrammetry, and optically stimulated luminescence dating: Konza Prairie, northeast Kansas
… the mechanics of vertical bedrock incision, the fluvial processes driving lateral bedrock erosion and the timescales over which it occurs remain poorly understood. In order to advance our understanding of how bedrock rivers erode laterally over time, I investigated past and present erosion rates …
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Classifying Single-thread Rivers: A European perspective
… rivers, which are free to adjust to fluvial processes. The research involves subdividing rivers along a continuum of geomorphological characteristics to assign river reaches to geomorphologically-meaningful classes according to their channel dimensions and forms, and floodplain …
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Riparian vegetation and the soil seed bank five years after dam removal on the Elwha River, Washington
… profoundly impact riparian areas by altering the fluvial processes that drive riparian vegetation communities. Dam removal may reverse these effects; however, very few studies have examined the response of riparian vegetation to large dam removal and associated disturbances, such as the release of …
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Tectonic and Climatic Controls on Continental River Systems
… and sets the pace of change for other landscape processes. In this thesis, I explore the complexities of landscapes evolving under fluvial processes. I address questions of how rivers respond to climate, geologic substrate, and tectonics across scales, how landscape disequilibrium results from …
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Quaternary to recent drainage evolution of the Rambla de Lucainena, SE Spain
… and active tectonics of this semi-arid area. Fluvial incision during the Quaternary has left a series of terrace fragments from which four important terrace groups have been identified. This study has taken a unique approach by integrating the analysis of contemporary process data and …
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Initial response of riparian vegetation to dam removal on the Elwha River, Washington
… by the damming of rivers that disrupts natural fluvial processes that change the flow regime, trap and reduce sediment transport downstream, and limit the dispersal of seeds in the water column. On some rivers, dams reduce floristic diversity downstream and create fragmented communities. Dam …
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Climate-induced trends in global riverine water discharge and suspended sediment dynamics in the 21st century
… century precipitation distribution, altering fluvial processes such as sediment dynamics and riverine water discharge, worldwide. Changes in the magnitude of fluvial water and sediment fluxes can have profound impacts on the functioning and connectivity of earth’s natural systems. This study …
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Prioritizing the Management of Arundo Donax: Recommendations for Removal and Revegetation in California Riparian Habitats
… allowed this alien species to take advantage of fluvial processes and rapidly spread within California watersheds. <em>A. donax </em>dramatically alters hydrologic regimes, displaces native vegetation, and removes food and habitat for native wildlife. It is widely accepted that removal of this …
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Remote sensing of river kinematics and their expression in the modern and ancient stratigraphic record
… disconnects remain between the mechanisms and processes governing river kinematics in the modern and expression of these processes in the stratigraphic record. This dissertation approaches this enigma from both perspectives via analysis of modern river kinematics using timelapse satellite …
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Landscape scale measurements of wind erosion of volcanic materials in the Hekla area
… 2008. There are interactions between aeolian and fluvial processes within the research area. The most active erosion areas are in the northeast, fed by aeolian sediment sources, but an active pathway for aeolian sand movement runs through the research area from the north-eastern part, along the …
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Simulation of catchment runoff, erosion and sediment transport using a transient numerical model for Mlalazi catchment
… conducted on developing an understanding of the fluvial processes in river catchments and in estuary dynamics. Many of the anthropogenic impacts on estuarine systems are generally derived from subjective expert opinion in South Africa. The Mlalazi Estuary is one of the best conserved estuaries in …
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Constraining tectonic and climatic controls on glacial/postglacial landscape evolution using numerical modeling
… is shaped by the interactions between surface processes, tectonics, and climate. During the Late Cenozoic, repeated glaciations have affected the landscapes of many high-latitude regions and mountain ranges around the world, including both active subduction belts and stable continental …
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The sedimentology, geochemistry and diagenesis of West Rand Group sediments in the Heidelberg area, Transvaal
… and sedimentary structures, the type of processes which were involved in the deposition of the arenaceous units of the West Rand Group, the current dispersal pattern and the probable, equivalent modern day depositional environment. The extent of diagenesis and metamorphism was …
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