RSNI - Manually revised location

MANUAL Location - Area: Alpi Pennine , magnitude (M_L): 0.3
2025-05-05 01:12:16 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-05-05 12:19:31

Earthquake info - Manual location

Event - ID :	250505011138
Magnitude (M_L) :	0.3 +/- 0.1
Origin Time :	2025-05-05 01:12:16.767 (UTC)
Location :	Latitude: 45.805 N, Longitude: 7.439 E
Area :	Alpi Pennine
Depth (km) :	8.02
Distances (km) :	6.9 --- Oyace 7.2 --- Quart 7.3 --- Nus 7.9 --- Bionaz 8.2 --- Saint-Marcel 8.6 --- Verrayes 8.9 --- Fenis 8.9 --- Brissogne 9.0 --- Saint-Christophe 9.1 --- Valpelline 10.0 --- Roisan 10.2 --- Torgnon 10.4 --- Doues 10.6 --- Chambave 10.7 --- Saint-Denis 10.8 --- Pollein 11.3 --- Ollomont 11.3 --- Gignod 11.9 --- Antey-Saint-Andre 12.2 --- Aosta

Quality location estimate: Erh: 0.5 km, Erz: 1.2 km, Nf: 20, Gap: 94 °, Rms: 0.54

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.
CIRO	GU	2025-05-05 01:12:22.180	0.003	0	-0.09	1.19	2025-05-05 01:12:25.153	0.040	0	-0.93	1.06	26.8
MRGE	IV	2025-05-05 01:12:22.692	0.020	0	0.01	1.49	2025-05-05 01:12:26.006	0.040	0	-0.88	0.97	31.1
DIX	CH	2025-05-05 01:12:23.119	0.020	0	0.01	1.48	2025-05-05 01:12:26.629	0.040	0	-0.99	0.97	32.5
SATI	GU	2025-05-05 01:12:22.862	0.020	0	-0.95	1.12	2025-05-05 01:12:27.915	0.040	0	-1.02	0.89	35.9
LSD	GU	2025-05-05 01:12:25.195	0.020	0	0.03	1.38	2025-05-05 01:12:30.032	0.040	0	-0.87	0.88	46.3
MMK	CH	2025-05-05 01:12:25.840	0.020	0	0.10	1.04	2025-05-05 01:12:31.303	0.040	0	-0.82	0.75	50.1
EMBD	CH	2025-05-05 01:12:26.745	0.020	0	-0.02	1.36	2025-05-05 01:12:32.674	0.040	0	-1.16	0.51	55.7
LATO	IV	2025-05-05 01:12:27.157	0.020	0	0.28	0.27	2025-05-05 01:12:33.702	0.040	0	0.08	1.00	56.7
RSL	FR	2025-05-05 01:12:28.320	0.020	0	-0.12	1.01	2025-05-05 01:12:36.325	0.040	0	-0.23	0.64	64.9
SIMPL	CH	2025-05-05 01:12:28.533	0.020	0	-0.06	1.23	2025-05-05 01:12:36.084	0.040	0	-0.90	0.77	66.7

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
CIRO	GU	HH	0.47	2.45e-2	26.8	156
MRGE	IV	HH	0.17	1.46e-2	31.1	263
SATI	GU	HH	0.25	9.07e-3	35.9	77
LSD	GU	HH	0.42	1.40e-2	46.3	212
MMK	CH	HH	0.33	5.28e-3	50.1	56
EMBD	CH	HH	0.11	4.76e-3	55.7	33
SIMPL	CH	HH	0.15	3.54e-3	66.7	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.
(°)

CIRO

HHZ

5.5723e-6

4.5345e-7

1.3266e-7

3.7103e-8

1.7399e-8

9.3750e-6

4.2434e-7

3.5577e-8

9.0704e-9

26.8

156

CIRO

HHN

9.0280e-6

9.4555e-7

1.7524e-7

5.5702e-8

3.4027e-8

1.1671e-5

8.9571e-7

7.5641e-8

1.6158e-8

26.8

156

CIRO

HHE

6.5336e-6

8.1287e-7

1.8955e-7

5.4808e-8

3.0357e-8

1.1196e-5

6.9538e-7

4.9882e-8

1.3751e-8

26.8

156

MRGE

HHZ

3.8265e-6

2.9180e-7

5.4278e-8

2.7854e-8

1.4038e-8

2.1474e-6

3.2288e-7

3.0734e-8

6.0306e-9

31.1

263

MRGE

HHN

5.6420e-6

4.9336e-7

9.6125e-8

4.2388e-8

1.9603e-8

7.8501e-6

3.3554e-7

3.2328e-8

1.0575e-8

31.1

263

MRGE

HHE

5.4154e-6

4.5928e-7

7.9499e-8

3.7580e-8

1.5746e-8

3.5731e-6

3.1056e-7

3.3461e-8

8.3521e-9

31.1

263

DIX

HHZ

1.5600e-5

2.2790e-6

1.1507e-6

4.1645e-7

2.1244e-7

5.6491e-5

6.0312e-6

3.4558e-7

6.3172e-8

32.5

355

DIX

HHN

2.3360e-5

3.2168e-6

8.6845e-7

2.5365e-7

1.4098e-7

3.4987e-5

3.8328e-6

2.6628e-7

6.8438e-8

32.5

355

DIX

HHE

2.1565e-5

2.8449e-6

1.2662e-6

3.0675e-7

1.8141e-7

2.8822e-5

4.9220e-6

2.8863e-7

6.5187e-8

32.5

355

SATI

HHZ

8.2466e-7

9.1208e-8

4.1636e-8

2.3987e-8

2.1478e-8

1.7555e-6

1.6274e-7

2.9679e-8

5.7553e-9

35.9

SATI

HHN

2.3182e-6

2.3496e-7

6.4544e-8

2.2615e-8

1.3510e-8

4.0047e-6

2.3914e-7

2.5383e-8

4.3830e-9

35.9

SATI

HHE

1.4706e-6

1.6152e-7

5.3604e-8

1.7667e-8

9.9596e-9

2.7314e-6

1.5960e-7

1.3970e-8

3.3453e-9

35.9

LSD

HHZ

2.5784e-6

3.0443e-7

1.1044e-7

2.8094e-8

1.3685e-8

4.0536e-6

3.6766e-7

2.3607e-8

5.9222e-9

46.3

212

LSD

HHN

2.7925e-6

2.9557e-7

7.6899e-8

2.4810e-8

1.1942e-8

3.4250e-6

3.5178e-7

2.0692e-8

5.0885e-9

46.3

212

LSD

HHE

4.6605e-6

4.4259e-7

1.0946e-7

2.9649e-8

1.5735e-8

4.7188e-6

4.6698e-7

3.2690e-8

7.2694e-9

46.3

212

MMK

HHZ

4.9936e-7

6.2574e-8

3.2677e-8

1.4039e-8

7.2187e-9

1.4466e-6

1.4177e-7

1.4177e-8

1.5856e-9

50.1

MMK

HHN

8.4147e-7

9.4254e-8

4.4859e-8

1.6421e-8

1.5877e-8

2.6440e-6

1.4621e-7

3.2096e-8

4.0168e-9

50.1

MMK

HHE

6.5421e-7

7.1574e-8

2.7244e-8

1.7367e-8

8.2225e-9

9.1521e-7

9.7967e-8

1.0563e-8

1.5110e-9

50.1

EMBD

HHZ

6.3860e-7

8.3538e-8

5.4961e-8

2.9191e-8

1.1658e-8

9.9415e-7

3.4044e-7

1.6896e-8

2.2288e-9

55.7

EMBD

HHN

6.0777e-7

7.7290e-8

4.2034e-8

1.5673e-8

7.6636e-9

1.4005e-6

2.1965e-7

1.0701e-8

1.7483e-9

55.7

EMBD

HHE

5.0893e-7

5.2630e-8

3.5101e-8

1.3888e-8

7.7871e-9

8.3956e-7

1.4570e-7

1.3362e-8

1.3616e-9

55.7

SIMPL

HHZ

3.7631e-7

5.6827e-8

3.2992e-8

9.7289e-9

6.1509e-9

1.3810e-6

1.7182e-7

9.8447e-9

1.3065e-9

66.7

SIMPL

HHN

3.2117e-7

4.1789e-8

2.2157e-8

7.8771e-9

4.8685e-9

9.4489e-7

9.7211e-8

8.0160e-9

9.2435e-10

66.7

SIMPL

HHE

5.2554e-7

6.7414e-8

3.6426e-8

9.9866e-9

5.8165e-9

1.3032e-6

1.4547e-7

1.1709e-8

1.8327e-9

66.7

*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: Alpi Pennine , magnitude (ML): 0.3 2025-05-05 01:12:16 (UTC)

MANUAL Location - Area: Alpi Pennine , magnitude (M_L): 0.3
2025-05-05 01:12:16 (UTC)