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 7 of 7 for “"Waveform modeling"”.
-
Determining the focal mechanisms of earthquakes by full waveform modeling
… earthquakes. This objective is met using a full waveform modeling method in which we generate synthetic seismograms using a discrete wavenumber code to match the observed seismograms. We first calculate Green's functions given an initial estimate of the earthquake's hypocenter, the locations of …
-
Investigating Speaker Features From Very Short Speech Records
… adaptive filtering, the approach is capable of modeling the nonstationarities due to both the vocal tract and vocal cord dynamics. Specifically, the procedure extracts the vocal tract estimate from within the closed glottis interval and uses it to obtain a time-domain glottal signal. This …
-
Joint modeling receiver functions and autocorrelograms to estimate crustal structure in the presence of deep sediments.
… P velocity (Vp) determination. Second, we use waveform matching to consider the full complexity recorded on the receiver functions and autocorrelograms. Waveform modeling takes significant computational power, so non-linear global optimization methods are used to efficiently navigate the …
-
1D shallow sedimentary subsurface imaging using ambient noise and active seismic data
… site effects are often neglected in seismic waveform modeling. First, the conventional frequency-wavenumber (f - k) technique is used to derive the dispersion characteristic of the propagating surface waves recorded using distinct arrays of seismometers in 1D and 2D configurations. Further, …
-
Advances in Simulating Binary Black Holes
… mergers routinely and extract accurate waveforms from these simulations. Meanwhile, there are still numerous open questions in this field awaiting answers. In this thesis, we present our solutions to three important issues in simulating binary black holes. First, we set about improving …
-
Tidal signatures in gravitational waves and systematic biases due to waveform inaccuracies
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-12-01
-
Effects of off-axis melt supply at fast-spreading mid-ocean ridges: A study of the 9-10n region of the East Pacific Rise
… We next present results from thermodynamic modeling that show systematic, along-axis variations in the depth of crystallization and degree of differentiation of magma produce crustal density variations of ∼0.1 g/cm 3 . These density anomalies are on the order inferred from a recent study …