Example 2f (2025-08-01 12:09:01 Vrancea)

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: 2024-08-01 12:09:01
Latitude: 45.663° N
Longitude: 26.720° E
Depth: 129.6 km
Magnitude: 4.5

Results

moment tensor best solution

moment tensor uncertainty

DC-part uncertainty

Centroid location

	absolute	relative
Time	2024-08-01 12:09:01	0.11 s after origin time
Latitude	45.652° N	1186 m south of the epicenter
Longitude	26.720° E	0 m of the epicenter
Depth	129.6 km	0.0 km deeper than location

Moment tensor and its quality

Centroid position
depth	129.6 km
Seismic moment
scalar seismic moment M₀	1.73e+15 Nm
moment magnitude M_w	4.1
Moment tensor components
M_rr	0.64 * 1e+15
M_θθ	0.08 * 1e+15
M_ϕϕ	-0.66 * 1e+15
M_rθ	-0.45 * 1e+15
M_rϕ	1.46 * 1e+15
M_θϕ	-0.19 * 1e+15
Moment tensor decomposition
DC	90 %
CLVD	9 %
ISO	1 %
strike	216 / 346
dip	16 / 80
rake	139 / 78
Quality measures
condition number	5
variance reduction	62 %

Histograms—uncertainty of MT parameters

DC-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:VRI	HH	1.0	1.0	1.0	23	1	0.03	0.09
RO:MLR	HH	1.0	1.0	1.0	63	253	0.03	0.09
Y8:RO07B 00	HH	1.0	---	---	82	23	0.03	0.09
RO:IZVR	HH	1.0	---	---	83	99	0.03	0.09
Y8:RO04A 00	HH	1.0	---	---	86	138	0.03	0.09
RO:TESR	HH	1.0	1.0	---	95	357	0.03	0.09
Y8:RO35A 00	HH	1.0	1.0	---	105	321	0.03	0.09
RO:DOPR	HH	1.0	---	1.0	109	289	0.03	0.09
RO:CFR	HH	1.0	---	---	123	115	0.03	0.09
RO:AMRR	HH	1.0	1.0	---	127	157	0.03	0.09

Mouse detection

RO07B HHN: MOUSE detected, ignoring component in inversion (time of onset: 27.6 s, amplitude: 1.30e-06 m s^-2, fit: 1.00)
RO07B HHE: MOUSE detected, ignoring component in inversion (time of onset: 28.5 s, amplitude: 3.10e-06 m s^-2, fit: 1.00)
IZVR HHN: MOUSE detected, ignoring component in inversion (time of onset: 34.6 s, amplitude: 8.32e-07 m s^-2, fit: 0.91)
IZVR HHE: MOUSE detected, ignoring component in inversion (time of onset: 34.0 s, amplitude: 1.67e-07 m s^-2, fit: 0.88)
RO04A HHN: MOUSE detected, ignoring component in inversion (time of onset: 24.4 s, amplitude: 3.05e-07 m s^-2, fit: 0.97)
RO04A HHE: MOUSE detected, ignoring component in inversion (time of onset: 41.4 s, amplitude: 1.39e-07 m s^-2, fit: 0.99)
TESR HHE: MOUSE detected, ignoring component in inversion (time of onset: 9.2 s, amplitude: 9.90e-08 m s^-2, fit: 0.95)
RO35A HHE: MOUSE detected, ignoring component in inversion (time of onset: 65.8 s, amplitude: 9.70e-08 m s^-2, fit: 0.96)
DOPR HHN: MOUSE detected, ignoring component in inversion (time of onset: 0.3 s, amplitude: 7.35e-08 m s^-2, fit: 0.97)
CFR HHN: MOUSE detected, ignoring component in inversion (time of onset: 33.6 s, amplitude: 1.94e-07 m s^-2, fit: 1.00)
CFR HHE: MOUSE detected, ignoring component in inversion (time of onset: 33.5 s, amplitude: 7.27e-08 m s^-2, fit: 0.99)
AMRR HHE: MOUSE detected, ignoring component in inversion (time of onset: 105.5 s, amplitude: 5.83e-07 m s^-2, fit: 0.63)

Data source

Station coordinates: /home/felix/anaconda3/envs/my_test/BayesISOLA-master/ntw/network.stn
Loading data from fdsnws server(s): https://seismos24.infp.ro/fdsnws/