RSNI - Manually revised location

MANUAL Location - Area: Francia , magnitude (M_L): 1.4
2025-02-03 21:38:28 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-02-04 08:55:56

Earthquake info - Manual location

Event - ID :	250203213804
Magnitude (M_L) :	1.4 +/- 0.2
Origin Time :	2025-02-03 21:38:28.887 (UTC)
Location :	Latitude: 45.496 N, Longitude: 6.636 E
Area :	Francia
Depth (km) :	6.01
Distances (km) :	34.6 --- La Thuile 36.5 --- Valgrisenche 38.4 --- Rhemes-Notre-Dame 40.4 --- Pre -Saint-Didier 42.2 --- Moncenisio 42.2 --- Courmayeur 42.6 --- Morgex 43.8 --- La Salle 44.1 --- Rhemes-Saint-Georges 45.1 --- Novalesa 45.9 --- Avise 45.9 --- Valsavarenche 46.7 --- Bardonecchia 47.1 --- Ceresole Reale 47.3 --- Arvier 47.5 --- Venaus 48.0 --- Introd 48.0 --- Saint-Nicolas 49.4 --- Giaglione 49.7 --- Mompantero

Quality location estimate: Erh: 1.3 km, Erz: 2 km, Nf: 32, Gap: 172 °, Rms: 0.28

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	2025-02-03 21:38:33.490	0.011	0	-0.00	1.38	2025-02-03 21:38:35.897	0.141	4	-0.64	0.39	22.2
OGMO	FR	2025-02-03 21:38:35.400	0.016	0	0.34	1.30	2025-02-03 21:38:39.490	0.102	3	0.21	1.37	32.8
LSD	GU	2025-02-03 21:38:36.830	0.035	1	0.38	1.20	2025-02-03 21:38:41.860	0.123	3	0.33	1.21	39.9
MRGE	IV	2025-02-03 21:38:37.824	0.020	0	0.17	1.33	2025-02-03 21:38:43.450	0.137	4	-0.04	1.26	45.5
BLANC	GU	2025-02-03 21:38:38.130	0.024	1	0.35	1.26	2025-02-03 21:38:43.922	0.179	5	0.18	1.30	46.1
RSP	GU	2025-02-03 21:38:40.600	0.032	1	0.25	1.36	2025-02-03 21:38:47.768	0.100	2	-0.43	0.65	63.0
RRL	GU	2025-02-03 21:38:40.870	0.033	1	-0.00	1.37	2025-02-03 21:38:48.932	0.040	0	-0.26	0.90	65.6
LATO	IV	2025-02-03 21:38:41.400	0.020	0	0.00	1.37	2025-02-03 21:38:49.079	0.040	0	-0.75	0.31	68.3
CIRO	GU	2025-02-03 21:38:42.590	0.038	1	-0.14	1.12	2025-02-03 21:38:50.920	0.225	6	-0.97	0.20	74.0
OGAG	FR	2025-02-03 21:38:43.080	0.039	1	-0.04	1.30	2025-02-03 21:38:53.100	0.323	7	-0.16	0.97	79.4
DIX	CH	2025-02-03 21:38:44.920	0.045	2	-0.04	1.29	2025-02-03 21:38:56.127	0.040	0	0.11	1.25	88.5
BHB	GU	2025-02-03 21:38:44.990	0.045	2	0.45	0.92	2025-02-03 21:38:55.014	0.040	0	-0.30	0.87	88.6
ORO	IV	2025-02-03 21:38:48.050	0.054	2	0.48	0.84	2025-02-03 21:39:00.087	0.040	0	0.09	1.19	105.9
SURF	FR	2025-02-03 21:38:49.340	0.057	2	0.42	0.98	2025-02-03 21:39:02.951	0.040	0	-0.34	0.82	113.9
PZZ	GU	2025-02-03 21:38:49.050	0.058	2	-0.12	1.14	2025-02-03 21:39:04.289	0.040	0	0.82	0.38	116.5
MMK	CH	2025-02-03 21:38:50.545	0.061	3	1.08	0.00	2025-02-03 21:39:06.262	0.040	0	2.37	0.00	120.4

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
LSD	GU	HH	1.23	1.21e-1	39.9	96
MRGE	IV	HH	0.93	3.99e-2	45.5	47
BLANC	GU	HH	1.19	8.32e-2	46.1	31
RSP	GU	HH	1.01	3.09e-2	63.0	128
RRL	GU	HH	1.44	4.86e-2	65.6	169
CIRO	GU	HH	1.56	3.86e-2	74.0	80
OGAG	FR	HH	1.35	3.80e-2	79.4	186
DIX	CH	HH	1.64	5.76e-2	88.5	42
BHB	GU	HH	1.34	2.64e-2	88.6	146
ORO	IV	EH	1.69	4.25e-2	105.9	82
PZZ	GU	HH	1.50	3.71e-2	116.5	161
MMK	CH	HH	1.56	1.22e-2	120.4	59

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

7.0025e-6

1.0285e-6

7.5022e-7

2.6928e-7

1.0069e-7

2.1480e-5

2.9806e-6

1.3768e-7

2.3406e-8

39.9

LSD

HHN

1.0982e-5

1.8882e-6

9.8947e-7

4.0335e-7

1.9463e-7

2.4523e-5

4.4378e-6

2.9202e-7

4.9852e-8

39.9

LSD

HHE

8.1241e-6

1.2479e-6

8.9743e-7

3.5045e-7

1.3545e-7

1.4896e-5

4.4562e-6

1.9925e-7

2.5640e-8

39.9

MRGE

HHZ

3.3077e-6

3.8126e-7

3.0323e-7

1.5253e-7

4.9039e-8

4.4625e-6

1.2293e-6

6.5298e-8

9.9740e-9

45.5

MRGE

HHN

6.2571e-6

7.8815e-7

3.8766e-7

1.4739e-7

7.1566e-8

1.5694e-5

2.0161e-6

9.7836e-8

1.5032e-8

45.5

MRGE

HHE

4.9666e-6

5.4285e-7

3.2945e-7

1.5975e-7

6.0785e-8

1.3747e-5

1.4575e-6

8.7916e-8

1.2672e-8

45.5

BLANC

HHZ

3.3793e-6

5.4350e-7

4.0551e-7

1.4960e-7

6.4323e-8

1.2781e-5

2.5916e-6

8.8961e-8

1.5468e-8

46.1

BLANC

HHN

7.6581e-6

1.1213e-6

5.9163e-7

1.7941e-7

8.5615e-8

1.3548e-5

1.9101e-6

1.4767e-7

2.9150e-8

46.1

BLANC

HHE

6.0781e-6

1.1806e-6

8.8328e-7

2.9983e-7

1.3921e-7

1.4158e-5

3.4005e-6

1.7595e-7

2.9920e-8

46.1

RSP

HHZ

1.4018e-6

2.6867e-7

1.7041e-7

7.4859e-8

2.8827e-8

4.8273e-6

6.8536e-7

4.0130e-8

6.1478e-9

63.0

128

RSP

HHN

1.8193e-6

3.7197e-7

2.9919e-7

1.1646e-7

4.7176e-8

7.0196e-6

1.2136e-6

6.0637e-8

9.6676e-9

63.0

128

RSP

HHE

2.3160e-6

4.2387e-7

2.8747e-7

7.5485e-8

3.9803e-8

7.9931e-6

1.4038e-6

5.5495e-8

9.2079e-9

63.0

128

RRL

HHZ

1.7716e-6

3.4897e-7

2.1163e-7

9.9555e-8

4.4494e-8

4.8784e-6

9.7958e-7

5.0302e-8

7.1513e-9

65.6

169

RRL

HHN

1.5778e-6

3.7926e-7

3.5114e-7

1.5996e-7

6.6962e-8

8.4493e-6

1.6606e-6

8.7707e-8

1.1141e-8

65.6

169

RRL

HHE

1.6407e-6

5.6833e-7

4.0126e-7

1.6532e-7

7.1345e-8

3.3119e-6

2.8424e-6

7.9655e-8

1.5053e-8

65.6

169

CIRO

HHZ

1.0182e-6

2.6619e-7

2.1589e-7

9.7047e-8

3.3196e-8

3.3870e-6

1.2374e-6

4.3919e-8

6.9696e-9

74.0

CIRO

HHN

1.1707e-6

3.4845e-7

3.2119e-7

1.6037e-7

6.0644e-8

3.4280e-6

1.9007e-6

7.9036e-8

1.0295e-8

74.0

CIRO

HHE

8.4035e-7

1.6472e-7

1.3551e-7

1.1127e-7

7.7635e-8

2.7764e-6

7.8581e-7

9.2023e-8

6.4596e-9

74.0

OGAG

HHZ

8.7328e-7

2.7224e-7

2.2913e-7

1.3739e-7

5.3092e-8

2.8029e-6

1.6415e-6

6.7373e-8

8.9236e-9

79.4

186

OGAG

HHN

1.1575e-6

3.7011e-7

3.0714e-7

1.3340e-7

5.8889e-8

2.1823e-6

1.5700e-6

8.1475e-8

1.1928e-8

79.4

186

OGAG

HHE

6.6519e-7

2.5405e-7

2.2379e-7

1.9418e-7

9.5261e-8

1.4183e-6

9.7855e-7

9.9999e-8

8.2426e-9

79.4

186

DIX

HHZ

3.0308e-6

7.7747e-7

6.7306e-7

3.1187e-7

1.4806e-7

9.7290e-6

3.9799e-6

1.8780e-7

2.1236e-8

88.5

DIX

HHN

2.6196e-6

6.0390e-7

5.8092e-7

2.3140e-7

9.1129e-8

9.1156e-6

3.7197e-6

1.2497e-7

1.7676e-8

88.5

DIX

HHE

3.7998e-6

7.5278e-7

6.2642e-7

2.1008e-7

9.7298e-8

1.0934e-5

3.3930e-6

1.4536e-7

1.9885e-8

88.5

BHB

HHZ

3.9806e-6

7.6245e-7

3.0771e-7

1.5918e-7

5.4425e-8

7.8470e-6

1.2992e-6

8.2755e-8

1.0006e-8

88.6

146

BHB

HHN

3.6561e-6

5.7030e-7

3.1231e-7

1.3540e-7

5.3961e-8

5.8042e-6

1.5343e-6

7.3397e-8

9.1760e-9

88.6

146

BHB

HHE

2.2556e-6

4.3006e-7

2.1870e-7

8.4222e-8

4.0215e-8

5.2386e-6

7.9601e-7

6.6649e-8

1.1055e-8

88.6

146

ORO

EHZ

1.8128e-6

4.2474e-7

3.7953e-7

1.1577e-7

5.7562e-8

5.2381e-6

1.3816e-6

7.5119e-8

1.3401e-8

105.9

ORO

EHN

2.4266e-6

4.0949e-7

4.2222e-7

1.6795e-7

5.6741e-8

5.2982e-6

2.7625e-6

7.4526e-8

1.0520e-8

105.9

ORO

EHE

1.9861e-6

4.8367e-7

4.1473e-7

1.6576e-7

6.5154e-8

5.2827e-6

1.9215e-6

8.2112e-8

1.2037e-8

105.9

PZZ

HHZ

1.5724e-6

3.7838e-7

2.8782e-7

8.5216e-8

4.4229e-8

4.5835e-6

1.6968e-6

6.6746e-8

9.0821e-9

116.5

161

PZZ

HHN

1.2405e-6

2.9196e-7

2.8666e-7

1.1071e-7

5.9388e-8

3.3188e-6

2.0929e-6

7.7207e-8

8.5164e-9

116.5

161

PZZ

HHE

1.9228e-6

4.1287e-7

3.2190e-7

9.5387e-8

4.5887e-8

4.7073e-6

1.5919e-6

6.9130e-8

1.0490e-8

116.5

161

MMK

HHZ

3.7443e-7

7.1993e-8

6.6726e-8

2.7931e-8

1.2669e-8

1.4678e-6

3.1682e-7

1.6254e-8

1.8392e-9

120.4

MMK

HHN

3.4705e-7

7.2593e-8

6.9124e-8

4.3401e-8

2.8504e-8

1.0569e-6

3.1527e-7

3.4974e-8

3.4709e-9

120.4

MMK

HHE

2.4426e-7

6.3757e-8

5.1370e-8

2.7138e-8

1.1130e-8

6.1059e-7

3.1643e-7

1.2423e-8

1.5386e-9

120.4

*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): 1.4 2025-02-03 21:38:28 (UTC)

MANUAL Location - Area: Francia , magnitude (M_L): 1.4
2025-02-03 21:38:28 (UTC)