A comparison of deconvolution techniques

Technical Report · Sat Aug 01 00:00:00 EDT 1992

OSTI ID:6731778

Ammon, C J ^[1]

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1. California Univ., Santa Cruz, CA (United States). Inst. of Tectonics

In the following, I compare several approaches to the deconvolution of a wavelet from a seismogram, when the wavelet can be estimated beforehand. Specifically, I examine the frequency domain waterlevel method, a least-squares, frequency-dependent weighting scheme, and a time-domain approach using the Singular Value Decomposition. I illustrate each deconvolution technique by estimating receiver functions using both high quality and low quality seismic waveforms. Each technique performs well with high quality data, and all have problems with noisy data. In cases where the data do not allow a complete extraction of desired information, the time domain approach is the more useful method to interpret the resulting waveforms. Singular Value Decomposition also permits an optimal combination of information from several deconvolutions or a quantitative comparison of the results from several deconvolutions. Additionally, the time domain approach is readily adaptable to multi-waveform deconvolution.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6731778
• Report Number(s): UCRL-ID-111667; ON: DE93007407
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
SEISMOGRAPHS
ITERATIVE METHODS
COMPARATIVE EVALUATIONS
FREQUENCY DEPENDENCE
NUMERICAL SOLUTION
SEISMIC WAVES
WAVE FORMS
WAVE PROPAGATION
CALCULATION METHODS
EVALUATION
MEASURING INSTRUMENTS
SEISMIC ARRAYS
SEISMIC DETECTORS
580000* - Geosciences
990200 - Mathematics & Computers