Results for the Vrancea event (2022-11-03 04:50:26)

Method
Waveform inversion for full moment tensor (6 components)
with the data covariance matrix based on real noise.
Reference
Vackář, Gallovič, Burjánek, Zahradník, and Clinton. Bayesian ISOLA: new tool for automated centroid moment tensor inversion, in preparation, PDF

Hypocenter location

Agency
RMP
Origin time
2022-11-03 04:50:25
Latitude
45.489° N
Longitude
26.526° E
Depth
149.0 km
Magnitude
5.3

Results

MT
moment tensor best solution
MT
moment tensor uncertainty
MT
DC-part uncertainty

Centroid location

absolute relative
Time 2022-11-03 04:50:26 1.05 s after origin time
Latitude 45.589° N 11024 m north of the epicenter
Longitude 26.479° E 3675 m west of the epicenter
Depth 149.0 km 0.0 km deeper than location

Moment tensor and its quality

Centroid position
depth 149.0 km
Seismic moment
scalar seismic moment M0 7.39e+16 Nm
moment magnitude Mw 5.2
Moment tensor components
Mrr 4.84 * 1e+16
Mθθ 0.31 * 1e+16
Mϕϕ -4.16 * 1e+16
Mrθ 0.33 * 1e+16
Mrϕ 4.91 * 1e+16
Mθϕ 1.99 * 1e+16
Moment tensor decomposition
DC 90 %
CLVD -6 %
ISO 4 %
strike 140 / 357
dip 26 / 68
rake 56 / 105
Quality measures
condition number 4
variance reduction 68 %

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)
RO:GRER HH 1.0 1.0 --- 37 109 0.03 0.15
RO:ISR HH 1.0 1.0 1.0 41 178 0.03 0.15
RO:VRI HH 1.0 1.0 1.0 45 21 0.03 0.15
RO:MLR HH 1.0 1.0 1.0 45 270 0.03 0.15
RO:BOSR HH 1.0 1.0 --- 94 314 0.03 0.15
RO:IZVR HH 1.0 1.0 --- 97 86 0.03 0.15
RO:TESR HH 1.0 1.0 --- 114 5 0.03 0.15
RO:VOIR HH 1.0 1.0 --- 116 268 0.03 0.15
RO:ARR HH 1.0 1.0 1.0 149 265 0.03 0.15
RO:ARCR HH 1.0 1.0 --- 244 317 0.03 0.15

Mouse detection

GRER HHE: MOUSE detected, ignoring component in inversion (time of onset: 31.0 s, amplitude: 3.61e-07 m s^-2, fit: 0.83)
BOSR HHE: MOUSE detected, ignoring component in inversion (time of onset: 35.3 s, amplitude: 4.72e-07 m s^-2, fit: 0.85)
IZVR HHE: MOUSE detected, ignoring component in inversion (time of onset: 35.7 s, amplitude: 1.03e-06 m s^-2, fit: 0.94)
TESR HHE: MOUSE detected, ignoring component in inversion (time of onset: 39.1 s, amplitude: 1.41e-07 m s^-2, fit: 0.83)
VOIR HHE: MOUSE detected, ignoring component in inversion (time of onset: 55.2 s, amplitude: 1.16e-07 m s^-2, fit: 0.82)
ARCR HHE: MOUSE detected, ignoring component in inversion (time of onset: 100.0 s, amplitude: 1.11e-07 m s^-2, fit: 0.85)

Data source

Station coordinates: input/vrancea/2022/nov/network1.stn
Loading data from fdsnws server(s): http://eida-sc3.infp.ro/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)

click to compare different depths

Stability in space (side view)

click to compare different points of view

Calculation parameters

Grid-search over space

number of points
483
horizontal step
3675 m
vertical step
3675 m
grid radius
17.706 km
minimal depth
136.294 km
maximal depth
161.706 km
rupture length (estimated)
4.706 km

Grid-search over time

min
-4.00 s (-399 samples)
max
8.71 s (871 samples)
step
0.07 s ( 7 samples)

Green's function calculation

Crustal model
vel_models/vr_adanci/crustal.dat
npts
512
tl
424.96
freq
257
npts for inversion
353
source time function
step in displacement

Sampling frequencies

Data sampling
100.0 Hz
Common sampling
100.0 Hz
Decimation factor
83 x
Sampling used
1.2 Hz