RSNI - Manually revised location

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): 0.6
2025-09-06 21:48:22 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-08 09:54:59

Earthquake info - Manual location

Event - ID :	250906214756
Magnitude (M_L) :	0.6 +/- 0.2
Origin Time :	2025-09-06 21:48:22.734 (UTC)
Location :	Latitude: 44.805 N, Longitude: 6.704 E
Area :	Alpi Cozie
Depth (km) :	4.95
Distances (km) :	15.5 --- Claviere 18.0 --- Cesana Torinese 19.6 --- Sauze di Cesana 22.0 --- Sestriere 27.5 --- Oulx 27.8 --- Sauze d Oulx 28.8 --- Prali 29.8 --- Pragelato 30.5 --- Bardonecchia 31.4 --- Salza di Pinerolo 32.6 --- Pontechianale 32.7 --- Massello 32.7 --- Bobbio Pellice 33.1 --- Salbertrand 35.0 --- Bellino 35.7 --- Villar Pellice 35.7 --- Perrero 37.2 --- Exilles 37.4 --- Usseaux 37.4 --- Casteldelfino

Quality location estimate: Erh: 0.5 km, Erz: 0.6 km, Nf: 22, Gap: 98 °, Rms: 0.18

Manual location results

Station	Net	P arrival time	P pick err	P pick weight	P res	Nll weight	S arrival time	S pick err	S pick weight	S res	Nll weight	Dist.
OGAG	FR	2025-09-06 21:48:25.860	0.008	0	0.00	2.08	2025-09-06 21:48:27.550	0.043	1	-0.47	0.44	14.5
RRL	GU	2025-09-06 21:48:26.420	0.009	0	-0.00	2.08	2025-09-06 21:48:28.943	0.107	3	-0.02	1.60	16.3
SURF	FR	2025-09-06 21:48:30.070	0.020	1	0.01	1.89	2025-09-06 21:48:34.780	0.113	3	-0.63	0.39	37.3
BHB	GU	2025-09-06 21:48:31.330	0.076	3	-0.05	1.60	2025-09-06 21:48:37.360	0.323	7	-0.02	0.95	44.6
OGMO	FR	2025-09-06 21:48:31.524	0.020	0	0.05	1.68	2025-09-06 21:48:37.200	0.251	7	-0.36	0.80	45.1
PZZ	GU	2025-09-06 21:48:31.560	0.025	1	-0.00	1.80	2025-09-06 21:48:37.140	0.141	4	-0.81	0.26	46.9
RSP	GU	2025-09-06 21:48:34.051	0.020	0	0.37	0.22	2025-09-06 21:48:41.137	0.040	0	-0.14	1.20	58.7
ISO	FR	2025-09-06 21:48:37.178	0.020	0	0.88	0.14	2025-09-06 21:48:45.762	0.040	0	-0.03	1.18	74.5
LSD	GU	2025-09-06 21:48:37.300	0.040	2	-0.08	1.39	2025-09-06 21:48:46.640	0.241	6	-0.85	0.31	80.6
LATO	IV	2025-09-06 21:48:38.013	0.020	0	0.88	0.14	2025-09-06 21:48:47.391	0.040	0	0.19	0.89	81.3
CIRO	GU	2025-09-06 21:48:42.686	0.020	0	-0.28	0.90	2025-09-06 21:48:55.345	0.040	0	-1.52	0.04	111.8

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
OGAG	FR	HH	0.61	1.93e-1	14.5	262
RRL	GU	HH	0.59	1.00e-1	16.3	28
BHB	GU	HH	0.28	1.01e-2	44.6	85
PZZ	GU	HH	0.39	2.18e-2	46.9	135
RSP	GU	HH	0.53	1.18e-2	58.7	49
LSD	GU	HH	0.79	1.02e-2	80.6	25
CIRO	GU	HH	1.05	4.63e-3	111.8	37

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

Station

Net

Channel

PGA
(g)

PGV
(m/s)

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.
(°)

OGAG

HHZ

4.7937e-6

1.2758e-6

9.7251e-7

1.0143e-6

6.9255e-7

1.9311e-5

3.6270e-6

8.9893e-7

6.1808e-8

14.5

262

OGAG

HHN

7.6883e-6

2.1432e-6

1.2509e-6

5.3028e-7

2.0898e-7

2.2711e-5

6.0696e-6

3.1633e-7

4.4759e-8

14.5

262

OGAG

HHE

6.3542e-6

1.9781e-6

1.2705e-6

1.0527e-6

5.7655e-7

1.5503e-5

5.5420e-6

6.9663e-7

6.7056e-8

14.5

262

RRL

HHZ

8.2853e-6

1.2270e-6

3.9472e-7

1.6662e-7

7.6803e-8

2.6661e-5

1.1168e-6

1.2792e-7

2.6757e-8

16.3

RRL

HHN

1.0488e-5

1.9482e-6

7.5472e-7

1.9384e-7

1.0962e-7

3.2289e-5

3.2417e-6

1.8777e-7

4.1556e-8

16.3

RRL

HHE

9.2502e-6

1.9639e-6

7.4639e-7

2.3744e-7

1.1963e-7

4.3809e-5

2.1116e-6

2.0823e-7

4.3642e-8

16.3

BHB

HHZ

1.6436e-6

2.1170e-7

8.6641e-8

2.7951e-8

3.0613e-8

4.4585e-6

4.3195e-7

7.7016e-8

4.6650e-9

44.6

BHB

HHN

1.2166e-6

1.6711e-7

8.9822e-8

2.4868e-8

1.8736e-8

4.0714e-6

3.8995e-7

3.9127e-8

4.1520e-9

44.6

BHB

HHE

1.8724e-6

1.9749e-7

8.3051e-8

2.7967e-8

2.0543e-8

3.5043e-6

4.6827e-7

4.4898e-8

4.0275e-9

44.6

PZZ

HHZ

1.5954e-6

3.1672e-7

1.6327e-7

4.5117e-8

2.3518e-8

4.5847e-6

8.2561e-7

3.4113e-8

7.0306e-9

46.9

135

PZZ

HHN

1.8083e-6

3.0088e-7

2.0370e-7

6.6830e-8

7.3072e-8

5.2682e-6

1.0725e-6

1.0942e-7

7.9448e-9

46.9

135

PZZ

HHE

2.0934e-6

3.2885e-7

2.0697e-7

5.1080e-8

2.7986e-8

5.6667e-6

9.2447e-7

3.7649e-8

7.3082e-9

46.9

135

RSP

HHZ

8.9188e-7

1.3143e-7

6.4433e-8

2.4412e-8

1.1115e-8

1.8443e-6

1.9042e-7

2.2193e-8

3.1119e-9

58.7

RSP

HHN

1.0157e-6

1.7053e-7

8.4219e-8

2.2173e-8

1.2605e-8

3.0950e-6

2.3310e-7

1.9094e-8

3.7510e-9

58.7

RSP

HHE

1.3306e-6

2.1579e-7

1.1587e-7

3.2968e-8

1.4046e-8

3.8848e-6

4.7527e-7

2.1409e-8

4.2816e-9

58.7

ISO

HHZ

1.8698e-7

3.1525e-8

1.9657e-8

5.6482e-9

3.8192e-9

5.2221e-7

6.7006e-8

6.1361e-9

7.0864e-10

74.5

158

ISO

HHN

2.5486e-7

3.2303e-8

2.0162e-8

9.2298e-9

9.2299e-9

7.4626e-7

9.1931e-8

1.3118e-8

2.7191e-9

74.5

158

ISO

HHE

3.5268e-7

4.5632e-8

2.4270e-8

8.5450e-9

4.5581e-9

8.5612e-7

9.3588e-8

7.4755e-9

1.0728e-9

74.5

158

LSD

HHZ

5.3690e-7

8.9272e-8

7.0411e-8

2.0720e-8

1.2772e-8

1.1582e-6

4.1494e-7

1.9837e-8

3.9721e-9

80.6

LSD

HHN

4.8370e-7

8.1683e-8

5.6137e-8

1.3864e-8

6.5924e-9

1.3565e-6

3.9992e-7

9.6691e-9

1.7595e-9

80.6

LSD

HHE

7.3696e-7

1.2963e-7

1.0732e-7

2.5493e-8

1.2564e-8

1.7516e-6

6.2680e-7

2.1036e-8

3.2117e-9

80.6

CIRO

HHZ

1.7858e-7

5.7105e-8

4.8141e-8

1.8959e-8

8.0412e-9

5.2455e-7

4.3188e-7

1.1088e-8

1.5757e-9

111.8

CIRO

HHN

1.8261e-7

4.3451e-8

3.7864e-8

1.6986e-8

6.9466e-9

5.6130e-7

2.6548e-7

1.1139e-8

1.2350e-9

111.8

CIRO

HHE

3.0226e-7

4.5949e-8

4.0977e-8

1.3743e-8

5.7833e-9

6.4767e-7

2.0644e-7

1.0782e-8

1.3171e-9

111.8

*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)

MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.6 2025-09-06 21:48:22 (UTC)

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): 0.6
2025-09-06 21:48:22 (UTC)