RSNI - Manually revised location

MANUAL Location - Area: Francia , magnitude (M_L): 0.7
2025-09-12 23:21:38 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-15 07:52:40

Earthquake info - Manual location

Event - ID :	250912232114
Magnitude (M_L) :	0.7 +/- 0.2
Origin Time :	2025-09-12 23:21:38.546 (UTC)
Location :	Latitude: 45.488 N, Longitude: 6.597 E
Area :	Francia
Depth (km) :	3.48
Distances (km) :	37.5 --- La Thuile 39.7 --- Valgrisenche 41.6 --- Rhemes-Notre-Dame 43.2 --- Pre -Saint-Didier 43.5 --- Moncenisio 44.9 --- Courmayeur 45.5 --- Morgex 46.2 --- Bardonecchia 46.5 --- Novalesa 46.8 --- La Salle 47.3 --- Rhemes-Saint-Georges 48.7 --- Venaus 49.0 --- Avise 49.1 --- Valsavarenche 50.0 --- Ceresole Reale 50.4 --- Arvier 50.5 --- Exilles 50.6 --- Giaglione 50.9 --- Chiomonte 51.0 --- Mompantero

Quality location estimate: Erh: 1.1 km, Erz: 2.2 km, Nf: 24, Gap: 198 °, Rms: 0.21

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.
RSL	FR	2025-09-12 23:21:43.340	0.018	0	0.03	1.33	2025-09-12 23:21:46.320	0.075	2	-0.09	1.34	22.7
OGMO	FR	2025-09-12 23:21:45.070	0.019	0	0.40	0.83	2025-09-12 23:21:48.679	0.178	5	-0.13	1.11	32.0
LSD	GU	2025-09-12 23:21:46.990	0.024	1	0.28	1.01	2025-09-12 23:21:52.130	0.199	5	0.02	1.19	42.4
MRGE	IV	2025-09-12 23:21:47.897	0.020	0	-0.14	1.21	2025-09-12 23:21:54.743	0.040	0	0.43	0.74	48.1
REMY	GU	2025-09-12 23:21:49.866	0.020	0	-0.06	1.36	2025-09-12 23:21:57.737	0.040	0	0.20	1.14	58.6
RSP	GU	2025-09-12 23:21:50.464	0.020	0	-0.06	1.35	2025-09-12 23:21:58.607	0.040	0	-0.01	1.24	64.6
RRL	GU	2025-09-12 23:21:50.620	0.034	1	-0.07	1.33	2025-09-12 23:21:59.010	0.401	8	-0.04	0.85	65.0
LATO	IV	2025-09-12 23:21:51.466	0.020	0	-0.22	0.96	2025-09-12 23:22:00.777	0.040	0	0.29	1.01	70.7
CANI	GU	2025-09-12 23:21:54.254	0.020	0	0.23	1.11	2025-09-12 23:22:04.138	0.040	0	-0.10	1.07	85.6
BHB	GU	2025-09-12 23:21:54.780	0.061	3	0.23	1.12	2025-09-12 23:22:05.981	0.040	0	0.46	0.70	89.4
DIX	CH	2025-09-12 23:21:55.676	0.020	0	0.35	0.92	2025-09-12 23:22:06.606	0.040	0	-0.21	0.90	91.1

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
LSD	GU	HH	0.45	1.81e-2	42.4	94
MRGE	IV	HH	0.48	1.27e-2	48.1	49
REMY	GU	HH	0.47	9.63e-3	58.6	48
RSP	GU	HH	0.71	1.48e-2	64.6	126
RRL	GU	HH	0.70	9.05e-3	65.0	166
CANI	GU	HH	0.54	4.97e-3	85.6	93
BHB	GU	HH	0.72	6.20e-3	89.4	144
DIX	CH	HH	1.05	1.38e-2	91.1	43

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.
(°)

LSD

HHZ

2.1400e-6

2.3476e-7

9.9218e-8

3.1348e-8

1.2226e-8

4.2644e-6

4.7398e-7

1.7896e-8

4.4003e-9

42.4

LSD

HHN

3.6265e-6

3.9403e-7

1.5115e-7

5.1633e-8

2.4448e-8

8.0075e-6

7.0513e-7

4.3565e-8

7.7660e-9

42.4

LSD

HHE

2.3071e-6

2.7576e-7

1.1883e-7

3.8942e-8

1.5008e-8

4.2434e-6

7.0872e-7

2.5918e-8

5.5167e-9

42.4

MRGE

HHZ

1.3627e-6

1.5494e-7

8.9776e-8

3.7786e-8

1.4968e-8

1.3666e-6

7.4218e-7

1.9788e-8

3.1875e-9

48.1

MRGE

HHN

3.0114e-6

3.4857e-7

8.9200e-8

2.9483e-8

1.6368e-8

5.7039e-6

3.8451e-7

2.8806e-8

6.6271e-9

48.1

MRGE

HHE

2.1877e-6

2.3857e-7

9.0573e-8

3.6015e-8

1.5711e-8

4.8078e-6

4.2435e-7

2.3470e-8

5.4436e-9

48.1

REMY

HHZ

5.7669e-7

6.9572e-8

4.7877e-8

1.9621e-8

1.4274e-8

1.0150e-6

2.6510e-7

1.8326e-8

1.8746e-9

58.6

REMY

HHN

4.3597e-7

8.8830e-8

6.2660e-8

6.0088e-8

5.5306e-8

1.0514e-6

2.9494e-7

8.5510e-8

1.1432e-8

58.6

REMY

HHE

5.2609e-7

9.8591e-8

7.7152e-8

3.9987e-8

1.4171e-8

1.3350e-6

3.9082e-7

1.9764e-8

2.4623e-9

58.6

RSP

HHZ

8.7124e-7

1.3660e-7

7.5970e-8

2.2299e-8

1.3464e-8

2.4109e-6

2.4712e-7

2.1183e-8

3.3016e-9

64.6

126

RSP

HHN

1.1999e-6

2.0646e-7

1.3542e-7

3.3974e-8

1.8068e-8

3.1451e-6

6.1031e-7

3.0448e-8

4.8805e-9

64.6

126

RSP

HHE

1.9409e-6

2.9162e-7

1.3420e-7

3.8877e-8

1.9807e-8

5.8636e-6

5.8423e-7

3.3975e-8

7.0085e-9

64.6

126

RRL

HHZ

2.5352e-7

5.8135e-8

5.0431e-8

2.6220e-8

1.3135e-8

8.6558e-7

3.2070e-7

1.9828e-8

1.7668e-9

65.0

166

RRL

HHN

4.0845e-7

9.2511e-8

8.8768e-8

3.9112e-8

1.6842e-8

1.3225e-6

5.3647e-7

2.2108e-8

3.0471e-9

65.0

166

RRL

HHE

3.4168e-7

8.3847e-8

7.2182e-8

3.5303e-8

2.0123e-8

8.5467e-7

3.9029e-7

3.2842e-8

2.3026e-9

65.0

166

CANI

HHZ

5.4029e-7

7.6172e-8

4.5386e-8

1.9292e-8

1.0065e-8

1.0143e-6

3.3374e-7

1.1463e-8

1.9479e-9

85.6

CANI

HHN

4.3599e-7

6.2661e-8

5.6056e-8

2.5569e-8

9.6691e-9

1.0279e-6

2.9599e-7

1.2816e-8

1.4692e-9

85.6

CANI

HHE

6.0685e-7

9.4480e-8

5.6932e-8

2.3651e-8

1.2034e-8

1.6287e-6

2.9124e-7

1.4152e-8

1.8665e-9

85.6

BHB

HHZ

5.3659e-7

7.7167e-8

5.7047e-8

3.2463e-8

1.8900e-8

1.7515e-6

2.0912e-7

3.8775e-8

2.1947e-9

89.4

144

BHB

HHN

3.6768e-7

8.4254e-8

5.1962e-8

2.4496e-8

1.4328e-8

1.1205e-6

1.9966e-7

2.9182e-8

2.3184e-9

89.4

144

BHB

HHE

3.7371e-7

7.0157e-8

6.0520e-8

3.9425e-8

1.9849e-8

1.0083e-6

1.9975e-7

3.7254e-8

2.4456e-9

89.4

144

DIX

HHZ

6.0405e-7

1.1998e-7

9.1451e-8

3.7362e-8

1.9552e-8

1.6622e-6

5.1319e-7

3.1120e-8

3.6582e-9

91.1

DIX

HHN

7.9299e-7

1.7666e-7

1.2939e-7

5.5529e-8

2.3034e-8

1.8679e-6

6.9480e-7

2.8917e-8

4.2695e-9

91.1

DIX

HHE

7.1715e-7

1.3626e-7

1.0856e-7

3.5860e-8

1.8152e-8

1.5995e-6

5.4187e-7

2.5663e-8

3.8754e-9

91.1

*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: Francia , magnitude (ML): 0.7 2025-09-12 23:21:38 (UTC)

MANUAL Location - Area: Francia , magnitude (M_L): 0.7
2025-09-12 23:21:38 (UTC)