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Media type:
E-Book;
Thesis
Title:
Ground penetration radar wave velocities and their uncertainties
:
global inversion of GPR traveltimes to assess uncertainties in CMP velocity models
Other titles:
Übersetzung des Haupttitels: Georadar-Wellengeschwindigkeiten mit Fehlerrechnung
University thesis:
Dissertation, Universität Potsdam, 2014
Footnote:
kumulative Dissertation
Description:
We develop three new approaches for ground penetration wave velocity calcultaions. The first is based on linear moveout spectra to find the optimum ground wave velocity including uncertainties from multi-offset data gathers. We used synthetic data to illustrate the principles of the method and to investigate uncertainties in ground wave velocity estimates. To demonstrate the applicability of the approach to real data, we analyzed GPR data sets recorded at field sites in Canada over an annual cycle from Steelman & Endres [2010]. The results obtained by this efficient and largely automated procedure agree well with the manual achieved results of Steelman & Endres [2010], derived by a more laborious largely manual analysis strategy. Then we develop a second methodology to global invert reflection traveltimes with a particle swarm optimization approach more precise then conventional spectral NMO-based velocity analysis (e.g., Greaves et al. [1996]). For global optimization, we use particle swarm optimization (PSO; Kennedy & Eberhart ...