RsniPicker2 Automatic Earthquake Location

AUTOMATIC Location - Area: Riviera di ponente , magnitude (M_L): 0.3
2025-12-11 11:12:50 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-12-11 11:17:36

Earthquake info - RsniPicker₂ automatic location

Event - ID :	251211111227
Magnitude (M_L) :	0.3 +/- 0.6
Origin Time :	2025-12-11 11:12:50.669 (UTC)
Location :	Latitude: 44.089 N, Longitude: 8.074 E
Area :	Riviera di ponente
Depth (km) :	2.12
Distances (km) :	1.2 --- Vendone (SV) 2.7 --- Onzo (SV) 2.9 --- Castelbianco (SV) 2.9 --- Arnasco (SV) 4.2 --- Ortovero (SV) 4.3 --- Zuccarello (SV) 4.3 --- Nasino (SV) 5.6 --- Aquila di Arroscia (IM) 5.8 --- Ranzo (IM) 5.8 --- Cisano sul Neva (SV) 5.9 --- Castelvecchio di Rocca Barbena (SV) 6.0 --- Erli (SV) 6.1 --- Alto (CN) 6.2 --- Garlenda (SV) 6.5 --- Casanova Lerrone (SV) 7.2 --- Villanova d Albenga (SV) 8.1 --- Borghetto d Arroscia (IM) 9.0 --- Balestrino (SV) 9.7 --- Testico (SV) 9.8 --- Stellanello (SV)

Quality location estimate:
Erh: 1.7 km, Erz: 0.6 km, Nf: 7, Gap: 177°, Rms: 0.072 s
Stazioni validate: 5

RsniPicker₂ - Automatic location results

Station	Net	P arrival times	P pick err	P pick weight	P res	Nll weight	S arrival time	S pick err	S pick weight	S res	Nll weight	Dist.
RORO	GU	2025-12-11 11:12:51.650	0.001	0	-0.01	1.61	2025-12-11 11:12:52.360	0.010	0	0.00	1.63	3.4
MGRO	GU	2025-12-11 11:12:55.490	0.012	0	0.01	1.61	--:--	-.---	-	-.--	-.--	21.9
GBOS	GU	2025-12-11 11:12:55.740	0.051	1	0.01	1.43	2025-12-11 11:12:58.389	0.313	2	-0.78	0.16	25.4
SAOF	FR	--:--	-.---	-	-.--	-.--	2025-12-11 11:13:04.830	0.344	2	-0.67	0.22	43.1
MSSA	IV	--:--	-.---	-	-.--	-.--	2025-12-11 11:13:24.530	0.409	2	-0.34	0.34	117.8

RsniPicker₂ - Automatic magnitude (M_L) calculation results

Station	Net	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth	Used
RORO	GU	-0.40	2.21e-1	3.4	347	SI
MGRO	GU	0.00	2.36e-2	21.9	257	SI
GBOS	GU	0.20	1.52e-2	25.4	312	SI
SAOF	FR	0.20	9.76e-3	43.1	255	SI
MSSA	IV	1.50	2.15e-2	117.8	77	SI

Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation

Station

Net

Channel

PGA
(g)

PGV
(m/s)

PGD
(m)

IH 0*
(m)

IH 1*
(m)

IH 2*
(m)

Sa(T=0.10)
(g)

Sa(T=0.30)
(g)

Sa(T=1.00)
(g)

Sa(T=3.00)
(g)

Dist.
(km)

Azim.
(°)

RORO

HHZ

2.4922e-5

3.6812e-6

0.0000e+0

1.8261e-6

3.5518e-6

5.1595e-6

5.1604e-5

6.6191e-6

3.8909e-7

7.0661e-8

3.4

347

RORO

HHN

3.4701e-5

4.1940e-6

0.0000e+0

1.8970e-6

3.5656e-6

6.0959e-5

1.0130e-5

5.2684e-7

9.9443e-8

3.4

347

RORO

HHE

4.0810e-5

4.3629e-6

0.0000e+0

1.9749e-6

3.7224e-6

5.4366e-6

4.4531e-5

7.4481e-6

3.9182e-7

7.5467e-8

3.4

347

MGRO

HHZ

3.4684e-6

2.9942e-7

0.0000e+0

1.3319e-7

2.5103e-7

3.6912e-7

1.8155e-6

6.4916e-7

1.3430e-7

5.9174e-9

21.9

257

MGRO

HHN

2.4053e-6

2.0879e-7

0.0000e+0

1.7337e-7

3.1523e-7

1.5303e-6

1.2935e-6

1.6035e-7

7.7113e-9

21.9

257

MGRO

HHE

3.5834e-6

3.3068e-7

0.0000e+0

1.3005e-7

2.6078e-7

3.8708e-7

1.7679e-6

6.7478e-7

1.0856e-7

7.1055e-9

21.9

257

GBOS

HHZ

7.6054e-7

1.1879e-7

0.0000e+0

7.8834e-8

1.4919e-7

2.2952e-7

1.8411e-6

1.9750e-7

9.1805e-8

6.2760e-9

25.4

312

GBOS

HHN

8.5653e-7

1.6265e-7

0.0000e+0

9.8196e-8

2.0881e-7

1.4367e-6

3.7411e-7

8.6214e-8

6.5255e-9

25.4

312

GBOS

HHE

9.6091e-7

1.4829e-7

0.0000e+0

8.1881e-8

1.4738e-7

2.0856e-7

2.1926e-6

2.1880e-7

3.2921e-8

3.5079e-9

25.4

312

SAOF

HHE

9.6091e-7

1.4829e-7

0.0000e+0

8.1881e-8

1.4738e-7

2.0856e-7

2.1926e-6

2.1880e-7

3.2921e-8

3.5079e-9

43.1

255

MSSA

HHZ

3.1793e-8

3.4889e-8

0.0000e+0

3.9612e-9

3.8356e-8

1.1479e-7

4.1832e-8

3.0999e-8

6.9207e-8

5.1194e-9

117.8

MSSA

HHN

1.2089e-7

2.9324e-8

0.0000e+0

4.2507e-9

3.2112e-8

5.9559e-8

2.7263e-8

6.2112e-8

3.6367e-9

117.8

MSSA

HHE

5.9665e-8

2.9518e-8

0.0000e+0

3.7571e-9

2.8609e-8

7.8264e-8

4.9368e-8

2.4655e-8

6.4665e-8

6.4196e-9

117.8

*IH (Housner Intensity) calculated on the velocity spectrum (SV) between 0.1 and 0.5 s (IH0), 0.1 and 1.0 s (IH1), 0.1 and 1.5 s (IH2)

AUTOMATIC Location - Area: Riviera di ponente , magnitude (ML): 0.3 2025-12-11 11:12:50 (UTC)

AUTOMATIC Location - Area: Riviera di ponente , magnitude (M_L): 0.3
2025-12-11 11:12:50 (UTC)