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 74 for “"Siberian"”.
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Thermokarst and thermal erosion : degradation of Siberian ice-rich permafrost
… to the climate system. Vast areas of the east Siberian lowlands, which are underlain by permafrost of the Yedoma-type Ice Complex, are particularly sensitive to climate warming because of the high ice content of these permafrost deposits. Thermokarst and thermal erosion are two major types of …
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Spatiotemporal Distribution of Siberian Wildfires and Impacts from Meteorological and Climatic Factors
Wildfire is a major disturbance affecting carbon cycling, land–atmosphere energy exchange, and ecological security in high-latitude ecosystems. Siberia is one of the most fire-prone regions in the high latitudes of the Northern Hemisphere, and the spatiotemporal variability of its wildfire activity …
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A Cryptic Invasion of the Non-Native Siberian Elm (Ulmus Pumila) to Southwest Missouri
… transform native ecosystems. One such species, Siberian elm, has been shown to have been invading native landscapes across the central and eastern United States since the late 1800s. The natives, American elm and slippery elm, have declined dramatically due to Dutch elm disease throughout the …
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Key factors influencing the reliability of trunk gas pipelines in the West Siberian North
… total Russian production comes from three West Siberian enterprises of RAO Gazprom, Russia's monopolistic gas company. These gas fields are among the largest in the world and lie astride or just north of the Arctic Circle in the Nadym-Pur-Taz gas production complex (located in the …
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An analysis of the role of the Baltic states ports in the trans Siberian railway market
… States' ports as transit gateways for the Trans Siberian container market. This work is divided in two parts, the theoretical and the practical. The first part of the study provides a theoretical presentation of the construct under investigation, starting with an introduction, presenting the …
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Molecular ecological analysis of methanogenic communities in terrestrial and submarine permafrost deposits of Siberian Laptev Sea area
Despite general concern that the massive deposits of methane stored under permafrost underground and undersea could be released into the atmosphere due to rising temperatures attributed to global climate change, little is known about the methanogenic microorganisms in permafrost sediments, their …
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Methanogens from Siberian permafrost as models for life on Mars : response to simulated martian conditions and biosignature characterization
… martian subsurface. Moreover, methanogens from Siberian permafrost are extremely resistant against different types of physiological stresses as well as simulated martian thermo-physical and subsurface conditions, making them promising model organisms for potential life on Mars. The main aims of …
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Predicted and observed free-air gravity anomalies for delamination models of the formation of the Siberian Flood Basalts
… mechanism responsible for the formation of the Siberian Flood Basalts (SFB) has yet to be discovered and adequately quantified. One theory proposes that thinning of the lithosphere due to delamination triggered the eruption. This model is characterized by a drip of denser material within the …
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ReportSiberia : deconstructing spatialized ideologies
The Siberian condition is an exaggerated one with many layers: its history of settlement created unconventional spatial conditions that are emphasized by extreme geography and climate. Observations from a visit describe the urban space as monotonous and depressing, the landscape as an endlessly …
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Siberian imaginaries: evaluating participatory placemaking as a tool for civic development of shared spaces in the postcolonial contexts of Yakutsk and Lensk, north-eastern Siberia
… define its characteristics. The final survey of Siberian Imaginaries built on found local affordances tests further the theory of urban imaginaries through online participatory design workshops. Throughout the research process an optimal 4-stage PP structure was applied based on the heuristic …
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Born to fly - migratory strategies and stopover ecology in the European Wadden Sea of a long-distance migrant, the Bar-tailed Godwit (Limosa lapponica)
… Godwit. In the Wadden Sea a European and an Afro-Siberian population of Bar-tailed Godwits stopover on their migration between wintering and breeding areas. Birds of the European population stayed during spring stopover for 30-40 days in the study area. Birds were extremely site faithful to their …
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Volatiles as a link between planetary interiors and the environment
… coupled systems. The apparently synchronous Siberian Traps eruption and end-Permian mass extinction offer an ideal test case to study the interactions between magmatism and climate. In this thesis, I use experimental petrology, numerical modeling, geochemical measurements, and field …
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The Palaeogenomics of Arctic and Sub-Arctic Peoples: A Study of Population Genetics, Adaptations, and Pathogen Incidence
… led to the early formation of the “Palaeo-Siberians'' in the Late Pleistocene and the “Neo-Siberians'' in the Holocene, the latter being genetically continuous with present-day groups in the region. The North American Arctic was populated by two genetically distinct, …
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Ground-based hyperspectral and spectro-directional reflectance characterization of Arctic tundra vegetation communities : field spectroscopy and field spectro-goniometry of Siberian and Alaskan tundra in preparation of the EnMAP satellite mission
… tundra vegetation communities at representative Siberian and Alaskan tundra sites as basis for the extraction of vegetation parameters, and the normalization of BRDF effects in off-nadir and multi-temporal remote sensing data. Moreover, in preparation for the upcoming German EnMAP (Environmental …
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DETRITAL-ZIRCON GEOCHRONOLOGIC PROVENANCE ANALYSES THAT TEST AND EXPAND THE EAST SIBERIA - WEST LAURENTIA RODINIA RECONSTRUCTION
… SHRIMP and LAICPMS. Data indicate that several Siberian samples contain zircons correlative with Laurentian sources, and several Laurentian samples contain zircons correlative with Siberian sources. The results not only strengthen correlations between the two successions, they also lead to a new …
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DETRITAL-ZIRCON GEOCHRONOLOGIC PROVENANCE ANALYSES THAT TEST AND EXPAND THE EAST SIBERIA - WEST LAURENTIA RODINIA RECONSTRUCTION
… SHRIMP and LAICPMS. Data indicate that several Siberian samples contain zircons correlative with Laurentian sources, and several Laurentian samples contain zircons correlative with Siberian sources. The results not only strengthen correlations between the two successions, they also lead to a new …
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Carbon Dynamics in Northern Marginal Seas
… Sea, the Kattegat and the Skagerrak) and the Siberian Shelf Seas (the Laptev Sea, the East Siberian Sea and the Chukchi Sea) has been studied in this thesis. Results from a study using historical data on Total Alkalinity (TA) from the Baltic Sea shows that there has been a change in the …
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