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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 137 for “"landforms"”.
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Periglacial landforms and processes in the southern Kenai Mountains, Alaska
… distribution and characteristics of periglacial landforms in the southern Kenai Mountains, Alaska, were investigated during the summer of 1979. The principal area of study was a 1300-metre high mountain mass which stood as a nunatak during the last general glaciation. Periglacial features in the …
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Object-based image analysis for detecting landforms diagnostic of natural hazards
… the first place, partly based on the diagnostic landforms that they form. To perform this effectively, automatic methods are desirable. Universal detection of natural hazards is challenging due to their differences in spatial impacts, timing and longevity of consequences, and the spatial …
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Aeolian dust emission dynamics across spatial scales: landforms, controls and characteristics
… and standardise testing protocols. Linking landforms with such emission measurements allow for the assessment of two existing dust emission schemes: the Preferential Dust Scheme (PDS; Bullard et al. 2011) and the Sediment Supply Map (SSM; Parajuli et al. 2017). Although these schemes …
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Submarine landforms and past ice flow in the Krossfjorden system, northwest Svalbard
… have been analysed to investigate submarine landforms and their implications for the dynamics and extent of past ice flow in the whole of the Krossfjorden system, northwest Svalbard. The results from this study confirm that ice extended out of the Krossfjorden system (to the shelf edge west …
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PLANT AND ARTHROPOD COMMUNITIES OF ALPINE ICE-RELATED LANDFORMS: ECOLOGICAL AND BIOGEOGRAPHIC IMPORTANCE
This PhD thesis is mainly organised as collection of research papers published, submitted, and in preparation. Chapter 1 outlines the state of the art, the main aims of the PhD project and the approaches used for reaching these objectives on peculiar study areas Chapter 2, “Vanishing habitats”, …
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Submarine Landforms and Late Quaternary Ice Flow in Hinlopen Strait, Northern Svalbard Margin
… is concerned with examining the submarine landforms and acoustic stratigraphy of this palaeo-ice stream with a view to furthering our understanding of past ice-flow dynamics in this area. Establishing the direction and dynamics of ice flow around the margins of palaeo-ice sheets has …
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An Analytical Surfacing Methodology for Application to the Geometric Measurement and Analysis of Landforms
Made available in DSpace on 2014-12-10T23:41:36Z (GMT). No. of bitstreams: 1 7511727.pdf: 9538259 bytes, checksum: 00506c7e683265623208629bc642e3a0 (MD5) Previous issue date: 1974
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An investigation of two periglacial landforms on ignimbrite blockslopes in Kluane National Park and Reserve, Yukon Territory
… introduces two novel forms of periglacial landforms, both occurring on ignimbrite material, and both occurring on other mountains in KNPR of the same geologic unit. Further, the results of these studies underline the knowledge gaps in the solifluction and nivation literature surrounding …
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Evaluating lithologic controls on erosional fluvial landforms using digital topographic data with 1 to 30 meter resolution
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Variations and trends in the sensitivity of machair soils and coastal landforms to erosion, South Uist, Outer Hebrides
… in the erodibility of machair soils and landforms, with no clear relationship between climatic factors and rates of erosion. Considerable short-term variations in beach volume and the position of dynamic shoreline indicators caution against the relaibility of using ‘snap-shot’ historic …
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Small-volume monogenetic igneous landforms and edifices statistics (SMILES) of Earth and Mars: one morphometric framework to classify them all
… volcanoes are the most abundant volcanic landforms on Earth and Mars. The remote classification of these volcanoes remained limited in scope and number due to methodological limitations. This dissertation develops, validates, and applies a dimensionless morphometric framework, known as …
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Studies of Glacial and Periglacial Environments on Mars
… solution to the problems of mapping small landforms over large areas. The approach allows the cataloguing of landform classes, of multiple sizes, efficiently in a single pass. The speed at which the data could be recorded allowed for the first continuous, full resolution mapping of …
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Pedogenesis, Inventory, and Utilization of Subaqueous Soils in Chincoteague Bay, Maryland
… of this study were to identify the subaqueous landforms, evaluate the suitability of existing subaqueous soil-landscape models, develop a soils map, and demonstrate the usefulness of subaqueous soils information. Bathymetric data collected by the Maryland Geological Survey in 2003 were used to …
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Small Scale Aeolian Processes and Landform Response
… motion. The deposited grains produce various landforms from centimeter-scale sand ripples to meter- or kilometer-scale dunes and dune fields on terrestrial and extraterrestrial surfaces. In this dissertation, I investigated three subjects concerning small-scale aeolian processes and landforms: …
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Periglacial Geomorphological Mapping of the Comanche Peak Area . Mummy Range, Larimer County, Colorado
… of wild flowers are the dominant vegetation. All landforms are developed in Precambrian granites, gneiss, and schist of Precambrian X (between 2500 m.y. - 1600 m.y.) and Y (between 1600 m.y. - 900 m.y.) ages. Most of the study area was not glaciated during late Pleistocene time. Headward erosion …
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Geomorphology and ecohydrology of water-limited ecosystems : a modeling approach
The role of vegetation in shaping landforms and how these landforms respond to disturbances are the subjects of this work. A numerical model is developed to help develop a mechanistic understanding of the hydrological, ecological and geomorphic interactions in water-limited ecosystems. The growth …
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Geomorphic Consequences of Hydroelectricity and Transportation Development near Celilo Falls, Lower Mid-Columbia River, Washington
… and hydroelectricity developments to eolian landforms on the floodplains and adjoining slopes have not been studied. Focusing on 2,800 acres near Celilo Falls, this study 1) establishes a baseline condition of eolian landforms from 1805 to 1900; 2) conducts an air photo increment analysis …
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Ecological Drivers of Plant Community Composition in a Patterned Fen at Seney National Wildlife Refuge, Michigan
… variation in geomorphology, vegetation, fen landforms, and water chemistry create a variety of unique peatlands across the Northern Hemisphere. In the Great Lakes region, patterned fens have been extensively studied in northern Minnesota, but largely ignored in Michigan. The purpose of this …
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