RSNI - Manually revised location

MANUAL Location - Area: Alpi Pennine , magnitude (M_L): 0.5
2025-10-07 02:35:19 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-07 07:06:10

Earthquake info - Manual location

Event - ID :	251007023453
Magnitude (M_L) :	0.5 +/- 0.2
Origin Time :	2025-10-07 02:35:19.286 (UTC)
Location :	Latitude: 45.912 N, Longitude: 7.012 E
Area :	Alpi Pennine
Depth (km) :	6.66
Distances (km) :	13.5 --- Courmayeur 16.3 --- Saint-Rhemy-En-Bosses 16.5 --- Pre -Saint-Didier 17.2 --- Morgex 18.2 --- Saint-Oyen 18.9 --- La Salle 19.6 --- Etroubles 22.1 --- La Thuile 23.2 --- Allein 24.0 --- Ollomont 24.6 --- Avise 24.7 --- Saint-Nicolas 25.0 --- Doues 26.0 --- Arvier 26.1 --- Valpelline 26.3 --- Gignod 27.2 --- Roisan 27.8 --- Villeneuve 28.0 --- Saint-Pierre 28.0 --- Introd

Quality location estimate: Erh: 1 km, Erz: 0.4 km, Nf: 26, Gap: 82 °, Rms: 0.30

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.
COURM	FR	2025-10-07 02:35:22.260	0.009	0	0.01	2.23	2025-10-07 02:35:23.620	0.024	0	-0.57	0.60	13.6
BLANC	GU	2025-10-07 02:35:22.440	0.008	0	0.03	2.10	2025-10-07 02:35:23.771	0.040	0	-0.73	0.59	13.9
REMY	GU	2025-10-07 02:35:23.019	0.038	1	-0.01	2.16	2025-10-07 02:35:25.152	0.040	0	-0.39	0.22	16.6
MRGE	IV	2025-10-07 02:35:23.070	0.011	0	-0.13	0.95	2025-10-07 02:35:25.030	0.238	6	-0.80	0.64	18.3
DIX	CH	2025-10-07 02:35:26.775	0.020	0	-0.03	1.98	2025-10-07 02:35:31.102	0.040	0	-0.86	0.60	36.8
RSL	FR	2025-10-07 02:35:26.840	0.022	1	-0.02	1.98	2025-10-07 02:35:31.090	0.103	3	-0.93	0.57	39.5
LSD	GU	2025-10-07 02:35:28.899	0.100	4	0.17	0.93	2025-10-07 02:35:34.175	0.134	4	-1.03	0.49	52.0
SENIN	CH	2025-10-07 02:35:29.967	0.020	0	0.00	1.71	2025-10-07 02:35:36.786	0.040	0	-0.64	0.68	55.5
CIRO	GU	2025-10-07 02:35:28.674	0.020	0	-1.20	0.27	2025-10-07 02:35:35.386	0.100	2	-1.92	0.00	56.0
LATO	IV	2025-10-07 02:35:32.977	0.020	0	0.11	1.22	2025-10-07 02:35:41.021	0.040	0	-1.02	0.50	76.8

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
BLANC	GU	HH	0.44	1.39e-1	13.9	219
MRGE	IV	HH	0.72	1.38e-1	18.3	166
DIX	CH	HH	0.82	5.55e-2	36.8	58
LSD	GU	HH	0.56	1.54e-2	52.0	169
SENIN	CH	HH	0.27	6.80e-3	55.5	24
CIRO	GU	HH	0.22	3.26e-3	56.0	128

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.
(°)

COURM

HHZ

1.0152e-4

1.1030e-5

2.6742e-6

7.0983e-7

4.1674e-7

2.0966e-4

9.5532e-6

8.3735e-7

1.8625e-7

13.6

200

COURM

HHN

1.1561e-4

1.2526e-5

2.9195e-6

8.5858e-7

5.5145e-7

1.8380e-4

9.9389e-6

1.1572e-6

2.6687e-7

13.6

200

COURM

HHE

5.5288e-5

6.6413e-6

1.8842e-6

5.3123e-7

3.2689e-7

1.4393e-4

6.9063e-6

5.9681e-7

1.1847e-7

13.6

200

BLANC

HHZ

1.5707e-5

2.2302e-6

7.1938e-7

1.9561e-7

1.3572e-7

3.6879e-5

3.0725e-6

2.3190e-7

4.3795e-8

13.9

219

BLANC

HHN

2.5795e-5

2.7356e-6

1.1025e-6

3.3160e-7

1.9902e-7

6.7669e-5

3.9542e-6

3.2541e-7

5.3705e-8

13.9

219

BLANC

HHE

1.9566e-5

2.3473e-6

1.0506e-6

3.0364e-7

1.5793e-7

5.5275e-5

5.8685e-6

2.5181e-7

4.5517e-8

13.9

219

REMY

HHZ

4.8890e-6

7.1885e-7

1.1728e-7

4.6571e-8

2.2185e-8

4.5094e-6

6.3432e-7

2.7616e-8

6.6037e-9

16.6

126

REMY

HHN

4.7389e-6

5.3318e-7

1.8075e-7

5.9665e-8

2.8123e-8

8.9977e-6

6.2143e-7

4.3394e-8

9.9345e-9

16.6

126

REMY

HHE

5.4948e-6

6.6789e-7

2.2703e-7

7.8095e-8

3.4771e-8

7.5382e-6

8.6740e-7

4.9391e-8

1.1776e-8

16.6

126

MRGE

HHZ

1.7798e-5

1.8545e-6

3.3407e-7

1.2084e-7

7.0328e-8

1.5788e-5

1.7546e-6

1.4976e-7

4.1674e-8

18.3

166

MRGE

HHN

5.1452e-5

4.5837e-6

6.9663e-7

2.5728e-7

1.3920e-7

4.0490e-5

2.4423e-6

3.3758e-7

9.3444e-8

18.3

166

MRGE

HHE

3.7475e-5

3.7981e-6

8.3936e-7

2.9416e-7

1.7423e-7

2.2908e-5

4.1988e-6

2.9530e-7

6.5723e-8

18.3

166

DIX

HHZ

5.0061e-6

5.7981e-7

2.8132e-7

7.2130e-8

3.2995e-8

6.8354e-6

1.2914e-6

5.8312e-8

1.4354e-8

36.8

DIX

HHN

5.8352e-6

7.0639e-7

4.5388e-7

1.8503e-7

6.4702e-8

1.3200e-5

1.7496e-6

1.1061e-7

1.7258e-8

36.8

DIX

HHE

5.2843e-6

5.4530e-7

2.6694e-7

1.1353e-7

5.3072e-8

7.0938e-6

1.1519e-6

8.2396e-8

1.3002e-8

36.8

LSD

HHZ

1.7280e-6

1.6214e-7

5.6680e-8

2.6377e-8

1.0785e-8

1.5993e-6

1.6334e-7

1.5044e-8

3.4333e-9

52.0

169

LSD

HHN

2.5163e-6

2.1002e-7

5.0949e-8

2.9407e-8

1.7579e-8

1.4349e-6

1.9498e-7

2.9503e-8

4.2140e-9

52.0

169

LSD

HHE

2.5320e-6

2.8857e-7

1.0648e-7

4.1616e-8

2.0178e-8

1.9486e-6

5.5600e-7

3.2108e-8

5.0632e-9

52.0

169

SENIN

HHZ

5.9817e-7

1.0095e-7

6.6475e-8

2.7337e-8

1.6312e-8

1.9275e-6

3.1261e-7

2.6872e-8

2.9971e-9

55.5

SENIN

HHN

5.2375e-7

7.0777e-8

5.2282e-8

2.5379e-8

1.5565e-8

1.3129e-6

3.1512e-7

2.1093e-8

2.6736e-9

55.5

SENIN

HHE

6.2321e-7

1.0012e-7

6.3942e-8

2.6830e-8

1.5274e-8

1.4248e-6

2.5987e-7

2.1921e-8

2.2300e-9

55.5

CIRO

HHZ

4.8692e-7

5.9205e-8

2.3227e-8

1.0088e-8

5.6856e-9

1.1310e-6

1.0267e-7

8.3622e-9

1.2832e-9

56.0

128

CIRO

HHN

9.6469e-7

8.5532e-8

2.4862e-8

8.7600e-9

4.9409e-9

9.7176e-7

8.7398e-8

9.0805e-9

1.7787e-9

56.0

128

CIRO

HHE

6.0919e-7

5.9675e-8

2.1923e-8

7.7292e-9

4.1265e-9

6.9272e-7

7.5456e-8

6.9092e-9

1.2701e-9

56.0

128

*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 Pennine , magnitude (ML): 0.5 2025-10-07 02:35:19 (UTC)

MANUAL Location - Area: Alpi Pennine , magnitude (M_L): 0.5
2025-10-07 02:35:19 (UTC)