Monitoring volcanic and geothermal areas by full seismic moment tensor inversion: are non-double-couple components always artefacts of modelling?

Details Monitoring volcanic and geothermal areas by full seismic moment tensor inversion: are non-double-couple components always artefacts of modelling? Monitoring volcanic and geothermal areas by full seismic moment tensor inversion: are non-double-couple components always artefacts of modelling?

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000geoji.143..353p&link_type=abstract

Geophysical Journal International, Volume 143, Issue 2, pp. 353-364.

Astronomy and Astrophysics

Astronomy

8

Earthquake-Source Mechanism, Fault-Plane Solutions, Inverse Problem, Source Time Functions, Volcanic Activity, Waveform Analysis

Scientific paper

Non-double-couple mechanisms in volcanic environments are indicators of local modifications of the stress field induced by dyke injection, high fluid pressure or by thermal cooling. However, the possible biasing effects of wave propagation in structurally complicated regions, the presence of noise, or inappropriate station coverage can make the identification of non-double-couples as true source phenomena uncertain. In this paper we review possible sources of false non-double-couples, and we estimate the reliability of the non-double-couple solutions on the basis of an error analysis that includes the variance of the modelling and of the noise in the data. Our analysis of synthetic and real data shows that we can identify, within confidence levels of 99 and 95 per cent, respectively, spurious non-double-couples due to inadequate station coverage, to noise in the data and to inadequacies of the structural model. Real data analyses must be preceded by synthetic tests in order to define the lower limits from which the non-double-couple components can be considered statistically significant at a given confidence level.

Affiliated with

Also associated with

No associations

Rating

Monitoring volcanic and geothermal areas by full seismic moment tensor inversion: are non-double-couple components always artefacts of modelling? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Monitoring volcanic and geothermal areas by full seismic moment tensor inversion: are non-double-couple components always artefacts of modelling?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monitoring volcanic and geothermal areas by full seismic moment tensor inversion: are non-double-couple components always artefacts of modelling? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1610851