RSNI - Manually revised location

MANUAL Location - Area: Svizzera , magnitude (M_L): 1.2
2025-10-22 09:27:59 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-23 07:17:12

Earthquake info - Manual location

Event - ID :	251022092750
Magnitude (M_L) :	1.2 +/- 0.2
Origin Time :	2025-10-22 09:27:59.988 (UTC)
Location :	Latitude: 46.339 N, Longitude: 7.033 E
Area :	Svizzera
Depth (km) :	1.84
Distances (km) :	58.2 --- Ollomont 58.4 --- Saint-Rhemy-En-Bosses 58.7 --- Saint-Oyen 59.4 --- Etroubles 59.6 --- Bionaz 60.3 --- Oyace 60.8 --- Courmayeur 61.3 --- Valpelline 61.4 --- Doues 61.8 --- Allein 63.9 --- Pre -Saint-Didier 64.5 --- Morgex 65.0 --- Gignod 65.1 --- Roisan 65.8 --- La Salle 68.5 --- Valtournenche 69.3 --- La Thuile 69.8 --- Saint-Nicolas 70.1 --- Aosta 70.3 --- Saint-Christophe

Quality location estimate: Erh: 1.9 km, Erz: 3.4 km, Nf: 20, Gap: 253 °, Rms: 0.29

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.
SENIN	CH	2025-10-22 09:28:05.415	0.008	0	0.01	1.82	2025-10-22 09:28:09.004	0.040	0	-0.03	1.73	21.0
DIX	CH	2025-10-22 09:28:09.338	0.020	0	0.70	0.39	2025-10-22 09:28:15.086	0.040	0	0.61	0.69	40.7
VANNI	CH	2025-10-22 09:28:10.969	0.020	0	1.37	0.11	2025-10-22 09:28:16.298	0.040	0	0.19	1.51	45.7
BLANC	GU	2025-10-22 09:28:11.258	0.020	0	-0.08	1.51	2025-10-22 09:28:18.399	0.157	4	-0.73	0.08	55.7
REMY	GU	2025-10-22 09:28:11.630	0.025	1	0.33	1.22	2025-10-22 09:28:19.044	0.040	0	0.03	1.55	56.6
LAUCH	CH	2025-10-22 09:28:12.767	0.020	0	1.13	0.09	2025-10-22 09:28:19.788	0.040	0	0.06	1.56	57.4
EMBD	CH	2025-10-22 09:28:14.930	0.020	0	2.63	0.00	2025-10-22 09:28:20.911	0.040	0	0.15	1.52	62.9
MRGE	IV	2025-10-22 09:28:12.778	0.020	0	0.49	0.91	2025-10-22 09:28:20.830	0.273	7	0.08	1.28	63.4
MMK	CH	2025-10-22 09:28:16.565	0.020	0	1.72	0.03	2025-10-22 09:28:25.061	0.040	0	-0.02	1.37	78.6

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
SENIN	CH	HH	1.36	5.50e-1	21.0	82
DIX	CH	HH	1.24	1.21e-1	40.7	135
VANNI	CH	HH	0.99	5.37e-2	45.7	108
BLANC	GU	HH	1.58	1.38e-1	55.7	188
REMY	GU	HH	1.02	3.70e-2	56.6	170
LAUCH	CH	HH	1.33	7.34e-2	57.4	81
EMBD	CH	HH	0.96	2.61e-2	62.9	102
MRGE	IV	HH	1.24	4.10e-2	63.4	178
MMK	CH	HH	1.13	1.26e-2	78.6	114

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.
(°)

SENIN

HHZ

2.1882e-5

8.5343e-6

5.6989e-6

3.1407e-6

1.2729e-6

5.3492e-5

3.4470e-5

1.6982e-6

2.1232e-7

21.0

SENIN

HHN

2.0179e-5

6.2413e-6

4.5194e-6

2.0515e-6

9.1828e-7

3.9535e-5

2.4183e-5

1.1473e-6

1.8063e-7

21.0

SENIN

HHE

1.8245e-5

5.4519e-6

3.4900e-6

1.8466e-6

7.6010e-7

4.4750e-5

2.1264e-5

1.0528e-6

1.2514e-7

21.0

DIX

HHZ

3.5948e-6

7.2215e-7

7.1365e-7

3.3045e-7

1.3608e-7

1.0638e-5

5.6893e-6

1.9943e-7

2.7499e-8

40.7

135

DIX

HHN

3.5402e-6

1.1646e-6

1.1260e-6

4.8400e-7

1.9461e-7

9.6282e-6

8.1449e-6

2.4936e-7

3.1210e-8

40.7

135

DIX

HHE

3.4915e-6

9.2976e-7

6.6111e-7

2.8902e-7

1.4576e-7

9.2942e-6

4.4911e-6

1.6178e-7

2.1296e-8

40.7

135

VANNI

HHZ

9.1934e-7

2.7634e-7

2.3899e-7

1.2446e-7

5.4546e-8

1.8119e-6

1.4829e-6

6.5158e-8

7.5766e-9

45.7

108

VANNI

HHN

1.0752e-6

4.1195e-7

2.9503e-7

3.0863e-7

2.2420e-7

1.3330e-6

2.6460e-6

2.7799e-7

1.2813e-8

45.7

108

VANNI

HHE

7.5351e-7

2.3475e-7

2.3015e-7

1.5377e-7

5.3112e-8

1.7219e-6

1.4950e-6

6.3891e-8

7.6137e-9

45.7

108

BLANC

HHZ

3.8944e-5

2.4252e-6

3.7474e-7

1.3647e-7

5.5332e-8

9.0919e-6

2.1750e-6

1.5197e-7

3.9788e-8

55.7

188

BLANC

HHN

7.1019e-5

4.4337e-6

4.4201e-7

1.9000e-7

1.1838e-7

1.8336e-5

2.2543e-6

2.9673e-7

7.9877e-8

55.7

188

BLANC

HHE

8.5312e-5

5.3277e-6

6.2775e-7

2.7150e-7

1.3834e-7

2.4722e-5

3.1651e-6

3.6890e-7

1.0976e-7

55.7

188

REMY

HHZ

1.4816e-6

3.3700e-7

2.9382e-7

1.1568e-7

5.7141e-8

2.8555e-6

1.6673e-6

6.3890e-8

8.0950e-9

56.6

170

REMY

HHN

1.7150e-6

4.3670e-7

3.5984e-7

1.5921e-7

7.1215e-8

4.0815e-6

1.7946e-6

8.2214e-8

1.1201e-8

56.6

170

REMY

HHE

1.6912e-6

3.5341e-7

3.5627e-7

1.7037e-7

6.5573e-8

4.5714e-6

1.2464e-6

8.7489e-8

1.0354e-8

56.6

170

LAUCH

HHZ

1.4597e-6

2.8460e-7

3.1730e-7

2.1395e-7

8.8930e-8

6.9435e-6

1.5861e-6

1.2262e-7

1.1550e-8

57.4

LAUCH

HHN

2.2247e-6

4.6822e-7

4.4316e-7

2.6557e-7

9.5439e-8

8.7838e-6

1.9804e-6

1.2441e-7

1.0997e-8

57.4

LAUCH

HHE

3.3104e-6

7.1181e-7

7.3863e-7

4.4388e-7

2.9159e-7

9.1653e-6

2.6798e-6

3.7202e-7

2.7484e-8

57.4

EMBD

HHZ

8.0144e-7

2.3148e-7

2.0464e-7

1.2241e-7

4.0828e-8

2.2919e-6

9.1161e-7

4.7639e-8

6.4224e-9

62.9

102

EMBD

HHN

5.9252e-7

1.8577e-7

1.9694e-7

1.3634e-7

4.4875e-8

2.1870e-6

7.3953e-7

5.2646e-8

6.5652e-9

62.9

102

EMBD

HHE

6.0924e-7

1.4052e-7

1.4117e-7

1.0106e-7

4.6464e-8

2.7027e-6

5.9796e-7

6.4767e-8

5.0113e-9

62.9

102

MRGE

HHZ

1.2042e-6

2.5519e-7

1.9599e-7

9.6725e-8

4.2748e-8

2.9607e-6

1.0773e-6

5.5775e-8

5.9540e-9

63.4

178

MRGE

HHN

2.0689e-6

3.7258e-7

3.1408e-7

1.7004e-7

7.0556e-8

7.4538e-6

1.8801e-6

9.1616e-8

1.0520e-8

63.4

178

MRGE

HHE

1.8451e-6

3.1643e-7

2.8051e-7

1.2780e-7

5.3846e-8

4.7805e-6

2.0192e-6

6.7868e-8

9.4389e-9

63.4

178

MMK

HHZ

4.3620e-7

8.7521e-8

9.5030e-8

4.8615e-8

1.9832e-8

1.2126e-6

4.7031e-7

2.6024e-8

2.5613e-9

78.6

114

MMK

HHN

4.3969e-7

1.1818e-7

1.2111e-7

6.0911e-8

2.5086e-8

1.3600e-6

6.2782e-7

3.5934e-8

3.9988e-9

78.6

114

MMK

HHE

3.4177e-7

9.3631e-8

7.7124e-8

3.9665e-8

1.8063e-8

1.3671e-6

6.3577e-7

2.0316e-8

2.5824e-9

78.6

114

*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: Svizzera , magnitude (ML): 1.2 2025-10-22 09:27:59 (UTC)

MANUAL Location - Area: Svizzera , magnitude (M_L): 1.2
2025-10-22 09:27:59 (UTC)