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GL5308: TIME SERIES ANALYSIS AND SIGNAL PROCESSING (2016-2017)

Last modified: 16 Nov 2016 18:00


Course Overview

An introduction to the theory of time series analysis applied to geophysical data acquisition and real and synthetic seismic signals, including an understanding of the underlying philosophy and mathematical foundations. The main focus will be on signal processing and 1D-2D filtering techniques with consideration to Fourier analysis, seismic travel times and geomagnetism problems. Familiarisation with practical application in a computational laboratory using commercial computational software (such as Matlab and Mathematica).

Course Details

Study Type Postgraduate Level 5
Session First Sub Session Credit Points 15 credits (7.5 ECTS credits)
Campus None. Sustained Study No
Co-ordinators
  • Dr Luca De Siena

What courses & programmes must have been taken before this course?

  • Any Postgraduate Programme (Studied)
  • Geology And Petroleum Geology (GL) (Studied)

What other courses must be taken with this course?

None.

What courses cannot be taken with this course?

None.

Are there a limited number of places available?

No

Course Description

I. Processing
1. Mathematical preliminaries: the z- and discrete Fourier transform (DFT), properties of the DFT, DFT of random sequences, practical exercises (commercial software)
2. Practical estimation of spectra: aliasing, spectral leakage and tapering, analogue-digital conversion, design example, practical exercises (commercial software)
3. Processing of time sequences: filtering and transfer functions, FIR-IIR filter, time domian response, standard response, deconvolution, practical exercises (commercial software)
4. Processing two dimensional data: the 2D Fourier transform, 2D filtering, travelling waves.
II. Application
1. Fourier analysis as an inverse problem: Wiener filter, Hilbert filter, multi tape spectral analysis
2. Seismic covariance, resolution and averaging problem in seismic image processing: pre conditioning filter, semblance, dip-azi steering filters, eigenstructures
3. Geomagnetism-gravity: the forward problem, the inverse problem, damping covarience, resolution and averaging problem

Degree Programmes for which this Course is Prescribed

  • MSc Geophysics

Contact Teaching Time

Sorry, we don't have that information available.

Teaching Breakdown


Assessment

There are in-course exercises for formative feedback. The summative element consists of two exercises, totalling 60% of the assessment, and an examination (40%). The exercises are: 1. a workbook recording practical work throughout the whole course (40%), and 2. an assigned exercise (20%) The examination will be by multiple choice and computer-marked.

Formative Assessment

None.

Feedback

None.

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