Discrimination of induced seismicity by full moment tensor inversion and decomposition

Cesca, Simone; Rohr, Andreas; Dahm, Torsten

doi:10.1007/s10950-012-9305-8

Cited by 112 publications

(77 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For the regional MT inversion, we use the Kiwi tools inversion platform (Heimann, 2011) and follow the inversion procedure described in Cesca et al (2013), which is based on full waveform displacements and spectra in the frequency range, in our case filtered between 0.07 and 0.1 Hz. We further decompose the MT solution into DC, CLVD, and isotropic components.…”

Section: The 19 March 2013 Event In a Regional Viewmentioning

confidence: 99%

“…Nevertheless, most of them exhibit significant non-DC components (e.g., Dreger et al, 2008;Ford et al, 2009). Among the physical processes that can be described by non-DC sources, we have tensional cracks, rockfalls, collapses, and pillar bursts (Hasegawa et al, 1989;Cesca et al, 2013). A full MT (Jost and Hermann, 1989), able to reproduce both the effect of DC and non-DC source models, is a more general and proper representation for seismic sources in mines.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Complex Rupture Process of the 19 March 2013, Rudna Mine (Poland) Induced Seismic Event and Collapse in the Light of Local and Regional Moment Tensor Inversion

Rudziński¹,

Cesca²,

Lizurek³

2016

Seismological Research Letters

Self Cite

View full text Add to dashboard Cite

On 19 March 2013, a strong, shallow, induced seismic event struck a mining panel in the room-and-pillar Rudna copper mine in southeastern Poland. The event caused important damage at the mining tunnel and trapped 19 miners, who were safely rescued a few hours later. Although mining-induced seismicity is frequent at this mine, the 19 March event was unusual because of its larger magnitude, its occurrence far from the mining stopes, and because it was accompanied by a strong hazardous rockburst. The mining inspections following the event verified the occurrence of a rockfall with tunnel floor uplift but also recognized the presence of a faulting structure at the hypocentral location. The availability of three monitoring networks (including local and regional data, short-period and broadband seismometers, and surface and in-mine installation) presented an optimal setup to determine rupture parameters and to compare the performance and results from different installations. We performed waveform and spectral-based analysis to infer source properties, with a particular interest to the determination of the rupture processes, using different moment tensor (MT) inversion techniques. Our results are surprisingly different, ranging from a dominant thrust mechanism, resolved at closest distances, to a collapse-type rupture, resolved at regional distances. We demonstrate that a complex rupture model is needed to explain all observations and to justify these discrepancies. The final scenario indicates that the rupture nucleated as a weaker thrust mechanism along a pre-existing weakened surface and then continued in a more energetic collapse event. The local LUMINEOS surface network has the potential to resolve both subevents but not using a standard MT decomposition. Here, we propose a new MT decomposition and an alternative MT fitting procedure that can be used to analyze the MT of collapse sources.Online Material: Tables of regional stations and source parameters, and figure of displacement seismograms.

show abstract

Section: The 19 March 2013 Event In a Regional Viewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Complex Rupture Process of the 19 March 2013, Rudna Mine (Poland) Induced Seismic Event and Collapse in the Light of Local and Regional Moment Tensor Inversion

Rudziński¹,

Cesca²,

Lizurek³

2016

Seismological Research Letters

Self Cite

View full text Add to dashboard Cite

show abstract

“…That work shares some similarities with that of Eisner et al (2009). A recent overview of MTI methods can be found in Cesca et al (2013) or Gu (2016).…”

Section: Introductionmentioning

confidence: 64%

What moved where?: The impact of velocity uncertainty on microseismic location and moment-tensor inversion

2017

View full text Add to dashboard Cite

With the rise of unconventional resources, microseismic monitoring is becoming increasingly important because of its cost-effectiveness. This has led to significant research activity on how best to locate events and characterize their moment tensors. Locations tell us where fracturing is occurring, allow the tracking of fluid movement, and fracture propagation. Moment tensors help to determine the type of failure occurring, which is beneficial in planning and interpreting the results of hydraulic-fracturing jobs and in monitoring production. The rising number of methods to determine parameters raises important questions about how uncertainties in the input parameters are translated into uncertainties in the final locations and moment tensors. We present a framework for assessing these uncertainties and use it to demonstrate how velocity uncertainty -as well as uncertainties in arrival times and amplitudes -translates into uncertainties on the recovered quantities of location and moment-tensor parameters.

show abstract

“…The advantage of the amplitude spectra inversion relies on its stability and lower dependence on precise trace alignment, which results in a more stable inversion of the DC component of the MT at the cost of losing the phase information. To check for the presence of non-DC MT components, we also inverted for full MTs (for details, see Cesca et al, 2013). In general, the full MT inversion reveals minor non-DC components (below 30%), most likely related to seismic noise, asymmetry of the network, and inaccuracy of the used 1D velocity model.…”

Section: Methodsmentioning

confidence: 99%

“…Even for the remaining 17 events, for which larger non-DC components were obtained, the misfit improvement for the full MT solution, in comparison to the corresponding DC one, is not significant. The significance of the misfit improvement from a DC to a full MT source in view of the different number of free source parameters has been discussed in Cesca et al (2013) through the adoption of different statistical information criteria. Upon these considerations, we consider our DC solutions to be more reliable and do not further discuss the full MT inversions.…”

Section: Methodsmentioning

confidence: 99%

Systematic Changes of Earthquake Rupture with Depth: A Case Study from the 2010M_w 8.8 Maule, Chile, Earthquake Aftershock Sequence

Sen

Cesca

Lange

et al. 2015

Bulletin of the Seismological Society of America

Self Cite

View full text Add to dashboard Cite

The very shallow part of subduction megathrusts occasionally hosts tsunami earthquakes, with unusually slow rupture propagation. The aftershock sequence of the 2010 M w 8.8 Maule earthquake, offshore Chile, provides us with the opportunity to study systematic changes in source properties for smaller earthquakes within a single segment of a subduction zone. We invert amplitude spectra for double-couple moment tensors and centroid depths of 71 aftershocks of the Maule earthquake down to magnitudes M w 4.0. In addition, we also derive average source durations. We find that shallower earthquakes tend to have longer normalized source durations on average, similar to the pattern observed previously for larger magnitude events. This depth dependence is observable for thrust and normal earthquakes. The normalized source durations of normal-faulting earthquakes are at the lower end of those for thrust earthquakes, probably because of the higher stress drops of intraplate earthquakes compared to interplate earthquakes. We suggest from the similarity of the depth dependence of normal and thrust events and between smaller and larger magnitude earthquakes that the depth-dependent variation of rigidity, rather than frictional conditional stability at the plate interface, is primarily responsible for the observed pattern. Tsunami earthquakes probably require both low rigidity and conditionally stable frictional conditions; the presence of longduration moderate-magnitude events is therefore a helpful but not sufficient indicator for areas at risk of tsunami earthquakes.Online Material: Table of earthquake inversion results for the 2010 M w 8.8 Maule, Chile, aftershock sequence.

show abstract

Discrimination of induced seismicity by full moment tensor inversion and decomposition

Cited by 112 publications

References 31 publications

Complex Rupture Process of the 19 March 2013, Rudna Mine (Poland) Induced Seismic Event and Collapse in the Light of Local and Regional Moment Tensor Inversion

Complex Rupture Process of the 19 March 2013, Rudna Mine (Poland) Induced Seismic Event and Collapse in the Light of Local and Regional Moment Tensor Inversion

What moved where?: The impact of velocity uncertainty on microseismic location and moment-tensor inversion

Systematic Changes of Earthquake Rupture with Depth: A Case Study from the 2010M_w 8.8 Maule, Chile, Earthquake Aftershock Sequence

Contact Info

Product

Resources

About

Discrimination of induced seismicity by full moment tensor inversion and decomposition

Cited by 112 publications

References 31 publications

Complex Rupture Process of the 19 March 2013, Rudna Mine (Poland) Induced Seismic Event and Collapse in the Light of Local and Regional Moment Tensor Inversion

Complex Rupture Process of the 19 March 2013, Rudna Mine (Poland) Induced Seismic Event and Collapse in the Light of Local and Regional Moment Tensor Inversion

What moved where?: The impact of velocity uncertainty on microseismic location and moment-tensor inversion

Systematic Changes of Earthquake Rupture with Depth: A Case Study from the 2010Mw 8.8 Maule, Chile, Earthquake Aftershock Sequence

Contact Info

Product

Resources

About

Systematic Changes of Earthquake Rupture with Depth: A Case Study from the 2010M_w 8.8 Maule, Chile, Earthquake Aftershock Sequence