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 11 of 11 for “"Ice Properties"”.
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Effect of temperature-dependent ice properties on ice shell convection for icy ocean worlds
Ice shell dynamics are a critical control on the habitability of icy ocean worlds. Here, we present a systematic study evaluating the effect of temperature-dependent material properties on these dynamics. We review the published thermal conductivity data for ice, which demonstrates that the most …
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Assessing the dependence of bulk ice properties from probes with anti-shatter tips on environmental conditions
Ice clouds have significant impacts on the Earth’s radiative budget. Their radiative impact highly depends on ice cloud microphysical properties. Climate and weather prediction models have to make certain assumptions about how the various processes are represented. Observations of how cloud …
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Multisensor Microwave Remote Sensing in the Cryosphere
… be a useful tool in estimating sea and glacial ice surface characteristics with both scatterometers and radiometers exhibiting high sensitivity to important ice properties. This dissertation presents an array of studies focused on extracting key surface features from multisensor microwave data …
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Ultrasonic velocity measurements of simulated lunar regolith with variable ice content: a laboratory and modeling investigation with implications for geophysical lunar resource exploration
… the location and abundance of water ice on the Moon. Water not only provides valuable insight into the Moon’s history but could also be processed into human consumables or rocket propellant for future missions. To date, remote sensing measurements have established the presence of …
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Multi-parameter estimation in glacier models with adjoint and algorithmic differentiation
… 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 are …
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Physical and biogeochemical properties of seasonal sea ice in the Atlantic sector of the Antarctic marginal ice zone
The study of Antarctic sea ice biogeochemistry has largely focused on samples collected from pack ice during summer, with few winter data available. Measurements from the Antarctic marginal ice zone (AMIZ) have proven even more difficult to obtain. The AMIZ is a broad, circumpolar feature of the …
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Investigating the air and liquid porosity of sea ice
Micro-scale sea ice properties have cascading effects onto larger scale climate and ocean systems. Brine and air inclusions are influenced by the growth conditions, which are highly dynamic in the Antarctic Marginal Ice Zone (MIZ) compared to the calmer Arctic. There are varying depths within an …
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Using Radar and Seismic Methods for the Determination of Ice Column Properties and Basal Conditions at Jakobshavn Isbræ and the NEEM Drill Site
… crystal orientation fabrics (COF) within the ice column can have a strong influence on the flow behavior of an ice sheet or glacier. Typically, COF information comes from ice cores. Observations of anisotropic seismic wave propagation and backscatter variation as a function of antenna …
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Design of a Small-Scale System for the Growth of Artificial Sea Ice
Sea ice plays a significant role in global climate systems, reflecting a significant portion of solar energy back into the atmosphere and maintaining ocean circulation currents. The effect of climate change on sea ice extent and seasonal changes is as yet unquantified. This is especially true for …
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Exploring the effects of single and dual phase culturing on the concentrations of Southern Ocean sea-ice algae and transporting living sea-ice algae from the Southern Ocean to land-based research facilities
Sea ice is a complex material with a significant impact on the global climate. Understanding the development of sea-ice properties based on the change in growth conditions is vital for the development of predictive models, which are key to providing forecasts of the influence global warming will …
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Detection and identification of mechanisms and trends of sea ice drift variability in the Southern Ocean
Antarctic sea ice regulates global climate processes by mediating exchanges of heat, momentum, and mass between the Southern Ocean and atmosphere. However, the logistical constraints of acquiring in situ sea-ice observations is challenging. Inferring sea-ice properties, such as concentration and …