Example 2f (2013-12-12 00:59:18 Sargans)
- Method
- Waveform inversion for full moment tensor (6 components)
with the data covariance matrix based on real noise
with crosscovariance between components.
- Reference
- Vackář, Gallovič, Burjánek, Zahradník, and Clinton. Bayesian ISOLA: new tool for automated centroid moment tensor inversion, in preparation, PDF
Hypocenter location
- Agency
- SED
- Origin time
- 2013-12-12 00:59:18
- Latitude
- 47.063° N
- Longitude
- 9.478° E
- Depth
- 6.1 km
- Magnitude
- 4.2
Results
moment tensor best solution
moment tensor uncertainty
DC-part uncertainty
Centroid location
|
absolute |
relative |
| Time |
2013-12-12 00:59:18 |
0.07 s before origin time |
| Latitude |
47.063° N |
0 m of the epicenter |
| Longitude |
9.478° E |
0 m of the epicenter |
| Depth |
6.8 km |
0.7 km deeper than location |
Moment tensor and its quality
| Centroid position |
|---|
| depth | 6.8 km |
|---|
| Seismic moment |
|---|
| scalar seismic moment M0 | 3.01e+14 Nm |
|---|
| moment magnitude Mw | 3.6 |
|---|
| Moment tensor components |
|---|
| Mrr | 0.64 * 1e+14 |
|---|
| Mθθ | 0.29 * 1e+14 |
|---|
| Mϕϕ | 0.56 * 1e+14 |
|---|
| Mrθ | 0.18 * 1e+14 |
|---|
| Mrϕ | -0.42 * 1e+14 |
|---|
| Mθϕ | -2.42 * 1e+14 |
|---|
| Moment tensor decomposition |
|---|
| DC | 78 % |
|---|
| CLVD | -5 % |
|---|
| ISO | 17 % |
|---|
| strike | 182 / 91 |
|---|
| dip | 85 / 80 |
|---|
| rake | 10 / 175 |
|---|
| Quality measures |
|---|
| condition number | 3 |
|---|
| variance reduction | 81 % |
|---|
Histograms—uncertainty of MT parameters
DC-part
CLVD-part
CLVD-part
moment magnitude
Histograms—uncertainty of centroid position and time
centroid depth
position east-west
position north-south
centroid time
Data used
stations used
Components used in inversion and their weights
| station | component | distance * | azimuth | fmin | fmax |
|---|
| code | channel | Z | N | E | (km) | (deg) | (Hz) | (Hz) |
|---|
| CH:LIENZ | HH | 1.0 | 1.0 | 1.0 | 26 | 2 | 0.02 | 0.15 |
| CH:SGT04 | HH | 1.0 | 1.0 | 1.0 | 33 | 343 | 0.02 | 0.15 |
| CH:PANIX | HH | 1.0 | 1.0 | 1.0 | 38 | 227 | 0.02 | 0.15 |
| CH:SGT03 | HH | 1.0 | 1.0 | 1.0 | 40 | 328 | 0.02 | 0.15 |
| CH:SGT05 | HH | 1.0 | 1.0 | 1.0 | 42 | 358 | 0.02 | 0.15 |
| CH:SGT01 | HH | 1.0 | --- | --- | 43 | 344 | 0.02 | 0.15 |
| CH:LLS | HH | 1.0 | 1.0 | 1.0 | 43 | 236 | 0.02 | 0.15 |
| CH:DAVOX | HH | 1.0 | 1.0 | 1.0 | 44 | 136 | 0.02 | 0.15 |
Mouse detection
SGT01 HHN: MOUSE detected, ignoring component in inversion (time of onset: 31.9 s, amplitude: 8.91e-08 m s^-2, fit: 0.94)
SGT01 HHE: MOUSE detected, ignoring component in inversion (time of onset: 18.5 s, amplitude: 7.67e-08 m s^-2, fit: 0.91)
Data source
Station coordinates: input/example_2_fdsnws/network.stn
Loading data from fdsnws server(s):
host: http://eida.ethz.ch/fdsnws/
waveform fit
(filtered)
waveform fit
(non-filtered)
waveform spectra
before-event noise
data covariance matrix
Stability and uncertainty of the solution
Posterior probability density function (PPD)
PPD: top view
PPD: north-south view
PPD: west-east view
Stability in space (top view)
Stability in space (side view)
Calculation parameters
Grid-search over space
- number of points
- 481
- horizontal step
- 664 m
- vertical step
- 664 m
- grid radius
- 2.326 km
- minimal depth
- 1.774 km
- maximal depth
- 10.426 km
- rupture length (estimated)
- 1.326 km
Grid-search over time
- min
- -1.00 s (-39 samples)
- max
- 2.33 s ( 93 samples)
- step
- 0.07 s ( 3 samples)
Green's function calculation
- Crustal model
- input/example_2_fdsnws/crustal.dat
- npts
- 64
- tl
- 52.80
- freq
- 33
- npts for inversion
- 55
- source time function
- step in displacement
Sampling frequencies
- Data sampling
- 120.0 Hz, 200.0 Hz
- Common sampling
- 40.0 Hz
- Decimation factor
- 33 x
- Sampling used
- 1.2 Hz
