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.
Results
Showing 1 to 20 of 64 for “"Inner core"”.
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Three Dimensional Inner Core Anisotropy, Lowermost Mantle Structure, and Inner Core Rotation
… explain the BC-DF time change over years, so the inner core rotation observation is valid.
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New insights into the differential rotation of the inner core
… travel times of seismic waves traversing the inner core (IC) from repeating earthquakes provided compelling evidence for an IC differential motion. In this dissertation, we conducted a systematic search for strong repeating earthquakes in the last three decades to examine the global and …
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Temporal change of the earth’s inner core from repeating earthquakes
This Thesis was approved for publication on 2017-04-24 at 15:38.
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Structure of the earth’s topmost inner core from seismic waveform inversion
The Earth’s solid inner core was formed from crystallization of liquid iron in the fluid outer core as the Earth slowly cools. The understanding of the structure of the inner core, combined with high pressure and temperature experiments at core condition, and dynamic simulation, will enable us to …
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Earth Inner Core Anisotropy as Observed by PKiKP and PKIIKP Reflected Waves
The idea of Earth inner core anisotropy is well-established, and it is a very important topic in understanding the planet’s core growth, magnetic dynamo, and evolution. Most data analysis techniques used to measure the anisotropy use the differential traveltimes between transmitted wave pairs, …
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The role of inner-core and boundary layer dynamics on tropical cyclone structure and intensification
Inner-core and boundary layer dynamics play a vital role in the tropical cyclone life cycle. This study makes use of analytical solutions and numerical models to gain insight into the role of dynamical processes involved with the incipient, rapidly intensifying, and eyewall replacement stages. A …
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Study of the average shear velocity of the inner-core of the earth using isolation filters
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1994.
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Density, magnetic properties and sound velocities of iron-rich materials at high temperature and high pressure
Understanding the composition of Earth’s inner core is crucial for revealing the mechanisms of core formation and the evolution of Earth. The presence of light elements in the Earth’s inner core has been indicated in recent studies, based on the mismatch between the observed density of the inner …
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The influence of core crystallization and mantle overturn on ancient dynamos
… the physical processes active during asteroid core crystallization. We model inward crystallization as well as crystal settling and the compaction of a possible cumulate inner core. We then explore the potential strength and longevity of a dynamo in the planetesimal's early history. We find …
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Understanding Mercury's Thermochemical Evolution Using a Geochemical and Geophysical Lens
Mercury is the most mysterious planet in the inner Solar System, suggested by observations from the MESSENGER mission. These observations shine a light on potential processes occurring within Mercury as it evolved over time. Scientific instruments aboard MESSENGER indicate that Mercury has a very …
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Characterization of the role of precipitation in tropical cyclone intensification
… transitions within its ascent branch in the TC inner-core. Disparate paradigms regarding the importance in TC intensification of solely liquid versus combined liquid and frozen hydrometeors have been put forth based upon space-borne passive microwave records. Furthermore, studies have suggested …
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Primary influencers of Indiana K-12 public educational decisions and methods of influencing : a Delphi technique
… Seven persons were identified as constituting an inner core of the power structure, however, none were identified for all five of the selected decisions and nonprimary influentials were identified in the peripheral of the power structure for each decision.2. In three of the five selected decisions …
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Formation and maintenance of tropical cyclone spiral bands in idealized numerical simulations
… of atmospheric waves emanating from the TC inner core, boundary layer instabilities, and the interaction between surface cold pools and low-level vertical wind shear. Despite much effort, no consensus has yet been reached on the underlying physical mechanism responsible for TC bands. We …
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Midlevel ventilation's constraint on tropical cyclone intensity
… or the flux of low-entropy air into the inner core of a tropical cyclone (TC), is a hypothesized mechanism by which environmental vertical wind shear can constrain a TC's intensity. An idealized framework is developed to assess how ventilation affects TC intensity via two pathways: …
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A museum about the city: an air rights proposal for Boston
… become available for development in Boston’s inner core. This thesis explores one possible way of using a specific air-rights parcel above the proposed tunnel.
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Bringing Together Earth and Sky: Project Vehicle - Gymnasium
… entities representative of these two core elements â earth and sky. Throughout this investigation I have come to define these elements as follows. The earth is hard, heavy, robust, solid, and stout. Its strength is massive, overpowering, and heroic. The sky is light, delicate, soft, …
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Counterbending in a flagellum macromodel
… of the flagellum is far from simple. The inner core consists of a 9+2 microtubular structure where nine pairs of microtubules are arranged circumferentially with the last pair running down the center. The interstitial space consists of springy proteins and nexin bridges which radially …
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Observation and Tracking of Tropical Cyclones Using Resolution Enhanced Scatterometry
… to provide additional storm structure such as inner core size and structure and the presence of multiple eyewalls compared with standard resolution winds. The 2.5~km winds are also able to observe storms nearer to the shore than 25~km winds. An analysis of circulation center locatability with …
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The impact of high frequency/low energy seismic waves on unreinforced masonry
… and densification of the loose granular inner core of some unreinforced masonry walls. Preliminary results of a series of static and dynamic tests, as well as of numerical models, demonstrate the potentially destructive effects of high frequency/low energy seismic waves on unreinforced …
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The Anamorphic Library
… with three main corridors, which wrap around the inner core, an open-air courtyard. The corridors contain the illusion while the "reality" resides adjacent to these corridors. This gives the spectator a chance to witness the stage of the illusion and the behind-the-scenes of the illusion, the …
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