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 39 for “"Cryosphere"”.
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Multisensor Microwave Remote Sensing in the Cryosphere
<p>Because the earth's cryosphere influences global weather patterns and climate, the scientific community has had great interest in monitoring this important region. Microwave remote sensing has proven to be a useful tool in estimating sea and glacial ice surface characteristics with both …
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Cryosphere processes and hydrogeological systems: analysis and interactions
L'abstract è presente nell'allegato / the abstract is in the attachment
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A Melting Fossil: Constituting Planetary Time In The Cryosphere, 1815-1980
A Melting Fossil traces how, since the nineteenth century, naturalists and scientists have used ice as a natural chronometer to understand the deep past and future of the Earth. Using archival sources that span two centuries and three continents, this project argues that through ice, Earth …
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Design for a mind with many bodies : cybernetic micro-interventions in the cryosphere
… the ongoing degradation of the ice caps in the cryosphere is examined as the setting. The increasing speed at which melting is taking place, and will continue to take place, calls for a focused exploration of intervening directly at such remote and fragile ecosystem in order to mitigate their …
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Evolution of the Geohydrologic Cycle During the Past 700 Million Years
… hydrosphere (exosphere) includes the atmosphere, cryosphere (glacial and polar ice), the biosphere, surface water, groundwater, and the oceans. The amounts of water in these various reservoirs of the hydrologic cycle have likely varied significantly over the past 700 Ma, with the cryosphere and …
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Big Remote Sensing Data and Machine Learning for Assessing 21st Century Flooding and Socioeconomic Exposures
… how climate change affects hydrology and cryosphere to 3) understand cryosphere-climate interaction for hazard risk and water resources management.
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Insights from geodynamic models into ice flow, mantle magmatism, and their interactions
… to study processes within the Earth’s mantle and cryosphere. I begin by quantifying previously unconsidered sources of magmatic CO2. In Chapter 2, I predict how small concentrations of CO2 found in passively upwelling mantle throughout ocean basins may generate low-degree carbonate melting. I find …
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Insights from geodynamic models into ice flow, mantle magmatism, and their interactions
… to study processes within the Earth's mantle and cryosphere. I begin by quantifying previously unconsidered sources of magmatic CO₂. In Chapter 2, I predict how small concentrations of CO₂ found in passively upwelling mantle throughout ocean basins may generate low-degree carbonate melting. I find …
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Triple oxygen isotope measurements in chert: insights into the Snowball Earth glaciations
… regarding the relationship between the cryosphere and hydrosphere during this time. This study analyzes silica precipitates within a carbonate sequence immediately underlying a Cryogenian diamictite to better understand this relationship, particularly the chemistry of subglacial …
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Impacts of Synoptic Weather on the Ice Phenology of Maine Lakes, 1955-2005
The cryosphere has been shown to be particularly adept as a proxy for climate change by various studies. Accordingly, historical records from the field of ice phenology have been harvested by climate scientists for the express purpose of studying the temporal variation of ice phenomena, namely …
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An investigation on humpback whales' distribution in relation to Antarctic sea ice in the IDCR/SOWER dataset
… to the seasonal sea ice. The changing Antarctic cryosphere in response to climate change threatens not only their habitat but also their prey resources. Understanding the interaction between the changing Antarctic Sea ice and its influence on the recovering humpback whales' distribution and …
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Glacier surging in the West Kunlun Shan
The cryosphere of High Mountain Asia represents the third-largest glacial system on Earth, with a glacierised area of ~40 800 km2 (Bolch et al., 2012) and a mass balance of -26 ± 12 Gt a-1: ~10% of the global contribution of the cryosphere to sea level rise (Vaughan et al., 2013). The glaciers of …
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Exploration of natural climate variability and changes in future events using observations, proxy data and model simulations
… of the atmosphere,biosphere, hydrosphere, and cryosphere—in response to two main drivers: externally forced changes, such as those caused by human activities, volcanic eruptions, and the planet’s orbital configuration; and internally generated changes arising from the natural interactions among …
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Multi-parameter estimation in glacier models with adjoint and algorithmic differentiation
The cryosphere is comprised of about 33 million km³ of ice, which corresponds to 70 meters of global mean sea level equivalent [30]. Simulating continental ice masses, such as the Antarctic or Greenland Ice Sheets, requires computational models capturing abrupt changes in ice sheet dynamics, which …
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Quantifying Supraglacial Debris Thickness and the Glaciological Controls on its Spatial Distribution in High Mountain Asia
… more prominent feature of the shrinking mountain cryosphere (Shukla et al., 2009; Thakuri et al., 2014; Gaddam et al. 2016; Tielidze et al., 2019), there is an increasing need to understand how they will respond to climate change. In particular, there is a requirement to improve our understanding …
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Fermentation of organic waste for bioplastic production : A potential sustainable alternative to fossil-fuel plastic
… aquatic, and terrestrial ecosystems, the cryosphere, and the atmosphere. One of the solutions proposed by the Arctic Council is to improve waste management by using renewable and sustainable materials. This is where bioplastics reveal their importance. They can be bio-produced by …
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Fermentation of organic waste for bioplastic production. A potential sustainable alternative to fossil-fuel plastic
… aquatic, and terrestrial ecosystems, the cryosphere, and the atmosphere. One of the solutions proposed by the Arctic Council is to improve waste management by using renewable and sustainable materials. This is where bioplastics reveal their importance. They can be bio-produced by …
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Planetary Seismology using Single-Station and Small-Aperture Arrays: Implications for Mars and Ocean Worlds
… Next, I used environmental analogs in Earth's cryosphere to quantify how seismometer placement on a mock-lander would affect instrument performance and seismic science results for a future surface mission to an icy ocean world. If mock-lander instruments were unprotected from the wind, noise …
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Diversity and Activity of Bacteria in Basal Ice Environments
… active and cycle elements within the cryosphere.
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Using Archived Aerial Photography to Measure Long-term Change in the Surface Elevation of Larsen A Tributary Glaciers from 1957 to 2020
… areas have contributed approximately 30% to cryosphere driven Sea Level Rise (SLR) (Hock et al., 2009). Therefore, monitoring ice loss in this region is key to improving our understanding of glaciological behaviour and responses to AW. The rate of AP ice mass loss significantly increased from …
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