Applied seismology focuses on time series analysis (filtering, fourier transform analysis, etc.) to allow seismic data processing. The most common passive and active techniques for seismic exploration of the shallow subsurface are described and discussed (seismic refraction, seismic reflection, downhole, crosshole, seimic noise tomography) as well as the procedures adopted for microzoning analysis (HVSR, SSR).
Burger and Burger, Exploration geohysics of teh shallow subsurface;
Lay and Wallace, Modern Global Seismology;
Hatton et al., Seismic data processing;
Learning Objectives
Provide an overview of the most common techniques for active and passive shallow seismic exploration geophysics.
Prerequisites
Mathematics, physics and geophysics.
Teaching Methods
Lectures and laboratory.
Type of Assessment
Oral exam
Course program
- Elasticity:
stress, strain, elastic constant, Huygens principle, Snell law.
- Time series analysis:
A/D conversion, sampling rate, Nyquist, dynamic excursion, decibels.
- Seismic refraction:
Travel time from a single horizontal layer, crossover distance, critical distance, travel time from 2 horizontal layers, travel time from multiple horizontal layers,
Travel time for an inclined layer, lateral variation of velocity, hidden layer, deep topography, vertical inversion of velocity, delay times, datum.
- Seismic reflection:
travel time for a single horizontal layer, travel time for a single inclined layer, Green method, Dix equation, normal move out (NMO), deep move out (CDP), common depth point (CDP).
- Downhole/crosshole.
- Seismic noise tomography.
- Seismic microzoning:
HVSR, SSR.