Seismic Exploration
A.Y. 2018/2019
Learning objectives
Knowledge and understanding: Learn the basic knowledge of reflection seismic for what concerns seismic data acquisition and processing up to building an image of the subsurface (stack section). Acquire the terminology pertinent to the Exploration Seismology.
Applying knowledge and understanding: The acquired knowledge are used to analyse the problems found in real land and marine seismic data and to propose suitable solutions for the processing and, possibly, for the acquisition.
Applying knowledge and understanding: The acquired knowledge are used to analyse the problems found in real land and marine seismic data and to propose suitable solutions for the processing and, possibly, for the acquisition.
Expected learning outcomes
Making judgements: The acquired knowledge allows to evaluate critically the results at the end of the seismic data processing. For each processing steps the student, autonomously, is able to estimate the correct parameters for obtaining the optimal results from the available seismic data.
Communication skills: The student is able to clearly communicate to third party the topics of Exploration Seismology and the issues inherent to the seismic data processing and acquisition; moreover is able to illustrate to the experts in the field the possible solutions that can be adopted to tackle these issues or problems.
Learning skills: Give the student the ability to learn autonomously topics that can not be dealt with during the lessons due to the limited time available, and also give him/her the ability to deepen the ones discussed.
Communication skills: The student is able to clearly communicate to third party the topics of Exploration Seismology and the issues inherent to the seismic data processing and acquisition; moreover is able to illustrate to the experts in the field the possible solutions that can be adopted to tackle these issues or problems.
Learning skills: Give the student the ability to learn autonomously topics that can not be dealt with during the lessons due to the limited time available, and also give him/her the ability to deepen the ones discussed.
Lesson period: First semester
Assessment methods: Esame
Assessment result: voto verbalizzato in trentesimi
Single course
This course cannot be attended as a single course. Please check our list of single courses to find the ones available for enrolment.
Course syllabus and organization
Single session
Lesson period
First semester
Course syllabus
Seismic Exploration
Seismic Exploration is a methodological course that gives the student the theoretical-practical knowledge on the seismic method up to the production of seismic images of the subsurface starting from field data. The topics considered are the following:
1) Basic principles of reflection seismic
short outline of wave equation and wave propagation; acoustic impedance of a medium; reflection coefficient of an interface; reflectivity trace and convolutional model for 1D synthetic seismogram; Fourier series and Fourier transforms and their properties; the sampling theorem.
2) Acquisition of seismic data
land and marine seismic sources; geophone and hydrophone; source and receiver spread; multifold coverage; kinematic of rays; identification of seismic events (reflection, refraction, multiple etc.) on real data; factors that affect the amplitudes of seismic signals.
3) Realization of seismic images of the subsurface
preliminary operation of gain and visualization on field data; band-pass and time variant filter; short notes on filters in the Frequency-Wavenumber domain (FK); statics corrections; amplitude recovery of seismic signals; deconvolution; CMP (common midpoint) sorting; velocity analysis; Normal Moveout (NMO) correction; stack; circle and Kirchhoff time migration.
Seismic Exploration is a methodological course that gives the student the theoretical-practical knowledge on the seismic method up to the production of seismic images of the subsurface starting from field data. The topics considered are the following:
1) Basic principles of reflection seismic
short outline of wave equation and wave propagation; acoustic impedance of a medium; reflection coefficient of an interface; reflectivity trace and convolutional model for 1D synthetic seismogram; Fourier series and Fourier transforms and their properties; the sampling theorem.
2) Acquisition of seismic data
land and marine seismic sources; geophone and hydrophone; source and receiver spread; multifold coverage; kinematic of rays; identification of seismic events (reflection, refraction, multiple etc.) on real data; factors that affect the amplitudes of seismic signals.
3) Realization of seismic images of the subsurface
preliminary operation of gain and visualization on field data; band-pass and time variant filter; short notes on filters in the Frequency-Wavenumber domain (FK); statics corrections; amplitude recovery of seismic signals; deconvolution; CMP (common midpoint) sorting; velocity analysis; Normal Moveout (NMO) correction; stack; circle and Kirchhoff time migration.
GEO/11 - APPLIED GEOPHYSICS - University credits: 6
Practicals: 36 hours
Lessons: 24 hours
Lessons: 24 hours
Professor:
Stucchi Eusebio Maria