RSNI - Manually revised location

MANUAL Location - Area: Francia , magnitude (M_L): 0.7
2025-07-17 03:19:25 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-17 07:52:32

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20 km

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Earthquake info - Manual location

Event - ID :	250717031817
Magnitude (M_L) :	0.7 +/- 0.1
Origin Time :	2025-07-17 03:19:25.176 (UTC)
Location :	Latitude: 45.406 N, Longitude: 6.557 E
Area :	Francia
Depth (km) :	5.12
Distances (km) :	38.1 --- Bardonecchia 40.1 --- Moncenisio 43.2 --- Novalesa 44.8 --- Venaus 45.0 --- Exilles 45.1 --- Salbertrand 46.2 --- La Thuile 46.3 --- Chiomonte 46.5 --- Giaglione 46.7 --- Oulx 46.8 --- Valgrisenche 47.2 --- Mompantero 47.4 --- Rhemes-Notre-Dame 48.0 --- Gravere 48.2 --- Sauze d Oulx 48.9 --- Susa 51.0 --- Meana di Susa 52.0 --- Pre -Saint-Didier 52.8 --- Balme 53.0 --- Ceresole Reale

Quality location estimate: Erh: 1.2 km, Erz: 2.4 km, Nf: 20, Gap: 189 °, Rms: 0.26

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.
OGMO	FR	2025-07-17 03:19:30.330	0.016	0	0.32	0.77	2025-07-17 03:19:33.296	0.040	0	-0.03	1.63	24.7
RSL	FR	2025-07-17 03:19:31.574	0.153	7	-0.00	1.50	2025-07-17 03:19:35.710	0.099	2	-0.11	1.35	32.2
LSD	GU	2025-07-17 03:19:34.140	0.040	1	0.26	1.07	2025-07-17 03:19:39.775	0.145	4	0.03	1.42	46.0
MRGE	IV	2025-07-17 03:19:35.981	0.020	0	0.08	1.56	2025-07-17 03:19:42.464	0.040	0	-0.61	0.35	56.7
RRL	GU	2025-07-17 03:19:35.930	0.030	1	-0.00	1.62	2025-07-17 03:19:43.273	0.040	0	-0.15	1.19	57.4
RSP	GU	2025-07-17 03:19:36.800	0.038	1	0.05	1.60	2025-07-17 03:19:44.240	0.192	5	-0.48	0.60	62.7
OGAG	FR	2025-07-17 03:19:36.958	0.020	0	-0.75	0.23	2025-07-17 03:19:47.183	0.040	0	0.53	0.53	69.0
LATO	IV	2025-07-17 03:19:39.253	0.020	0	0.94	0.25	2025-07-17 03:19:47.320	0.040	0	0.04	1.37	71.8
BHB	GU	2025-07-17 03:19:40.130	0.212	8	-0.09	1.22	2025-07-17 03:19:50.580	0.261	7	-0.03	1.09	84.4
CANI	GU	2025-07-17 03:19:42.153	0.020	0	1.05	0.21	2025-07-17 03:19:52.416	0.040	0	0.67	0.44	88.7

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
LSD	GU	HH	0.61	2.21e-2	46.0	82
MRGE	IV	HH	0.54	1.03e-2	56.7	44
RRL	GU	HH	0.72	1.23e-2	57.4	161
RSP	GU	HH	0.82	2.01e-2	62.7	117
OGAG	FR	HH	0.80	1.45e-2	69.0	181
BHB	GU	HH	0.72	7.10e-3	84.4	139
CANI	GU	HH	0.73	7.12e-3	88.7	87

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

2.3260e-6

3.0933e-7

1.5963e-7

5.9457e-8

2.3707e-8

3.9234e-6

4.9714e-7

3.7243e-8

7.3036e-9

46.0

LSD

HHN

4.6090e-6

5.5743e-7

1.8489e-7

4.2044e-8

2.3195e-8

1.0154e-5

5.8615e-7

4.8822e-8

1.2260e-8

46.0

LSD

HHE

2.6888e-6

3.8611e-7

1.8317e-7

5.4613e-8

2.4132e-8

3.9719e-6

8.1609e-7

3.8923e-8

8.6141e-9

46.0

MRGE

HHZ

6.2755e-7

1.0658e-7

6.9881e-8

3.3864e-8

1.1319e-8

9.5072e-7

4.0024e-7

1.5083e-8

2.3995e-9

56.7

MRGE

HHN

1.2536e-6

1.4864e-7

8.6732e-8

4.5056e-8

2.5824e-8

2.8737e-6

4.1472e-7

2.4546e-8

3.8331e-9

56.7

MRGE

HHE

1.1016e-6

1.3022e-7

8.2241e-8

4.3269e-8

1.7110e-8

2.0239e-6

3.3895e-7

2.8786e-8

3.6944e-9

56.7

RRL

HHZ

5.1440e-7

8.4271e-8

7.9810e-8

4.6199e-8

1.6760e-8

1.0469e-6

5.4109e-7

2.4696e-8

2.7581e-9

57.4

161

RRL

HHN

5.3531e-7

1.4175e-7

1.1941e-7

5.3454e-8

1.9110e-8

1.5612e-6

6.6669e-7

2.8647e-8

3.8147e-9

57.4

161

RRL

HHE

5.8140e-7

1.0197e-7

1.0516e-7

5.2132e-8

1.7319e-8

1.6999e-6

6.6543e-7

2.0136e-8

2.7245e-9

57.4

161

RSP

HHZ

1.3034e-6

1.7478e-7

9.0328e-8

3.9648e-8

2.0038e-8

2.5758e-6

3.9556e-7

3.0971e-8

3.9281e-9

62.7

117

RSP

HHN

1.4162e-6

3.1902e-7

1.9447e-7

5.5235e-8

2.7100e-8

4.6304e-6

7.2413e-7

3.6840e-8

7.4765e-9

62.7

117

RSP

HHE

1.6612e-6

2.9843e-7

1.8414e-7

4.4984e-8

2.0801e-8

4.9494e-6

7.5398e-7

3.2482e-8

6.9318e-9

62.7

117

OGAG

HHZ

2.1742e-7

6.1997e-8

6.0441e-8

3.1548e-8

1.5103e-8

1.1373e-6

4.1274e-7

1.7662e-8

1.6405e-9

69.0

181

OGAG

HHN

2.8489e-7

1.0015e-7

8.1881e-8

6.7788e-8

5.4944e-8

5.9104e-7

4.9151e-7

7.5539e-8

4.7628e-9

69.0

181

OGAG

HHE

2.8553e-7

1.0838e-7

7.6409e-8

9.1348e-8

8.8180e-8

7.2169e-7

3.6248e-7

1.0795e-7

5.6319e-9

69.0

181

BHB

HHZ

5.8356e-7

1.0137e-7

7.4064e-8

2.9510e-8

1.1839e-8

2.2404e-6

2.9208e-7

1.7013e-8

2.6133e-9

84.4

139

BHB

HHN

4.1736e-7

7.7571e-8

5.9326e-8

3.9240e-8

1.4323e-8

1.5575e-6

2.1373e-7

1.7954e-8

1.9921e-9

84.4

139

BHB

HHE

3.6768e-7

8.3756e-8

7.3266e-8

3.2511e-8

1.1253e-8

9.8904e-7

3.0666e-7

1.4704e-8

1.9273e-9

84.4

139

CANI

HHZ

5.2172e-7

8.3598e-8

4.7830e-8

2.5227e-8

9.5037e-9

1.4037e-6

2.4402e-7

1.2774e-8

2.0534e-9

88.7

CANI

HHN

5.4976e-7

9.4999e-8

6.4756e-8

2.7179e-8

9.4038e-9

1.8881e-6

2.9853e-7

1.1881e-8

2.1421e-9

88.7

CANI

HHE

6.3265e-7

9.4368e-8

5.9150e-8

3.5355e-8

1.4389e-8

1.7142e-6

2.7522e-7

1.9209e-8

2.4338e-9

88.7

*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 2025-07-17 03:19:25 (UTC)

MANUAL Location - Area: Francia , magnitude (M_L): 0.7
2025-07-17 03:19:25 (UTC)