RSNI - Manually revised location

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): 0.7
2025-10-05 14:38:50 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-06 08:44:12

Earthquake info - Manual location

Event - ID :	251005143731
Magnitude (M_L) :	0.7 +/- 0.2
Origin Time :	2025-10-05 14:38:50.007 (UTC)
Location :	Latitude: 45.065 N, Longitude: 7.143 E
Area :	Alpi Cozie
Depth (km) :	7.32
Distances (km) :	6.4 --- Mattie 6.9 --- Roure 7.6 --- San Giorio di Susa 7.8 --- Fenestrelle 8.3 --- Bussoleno 8.5 --- Villar Focchiardo 8.6 --- Meana di Susa 9.2 --- Usseaux 9.6 --- Bruzolo 9.7 --- Chianocco 9.7 --- San Didero 9.9 --- Borgone Susa 10.8 --- Susa 11.4 --- Sant Antonino di Susa 11.6 --- Gravere 12.3 --- Perosa Argentina 12.4 --- Vaie 12.4 --- Pomaretto 12.4 --- Coazze 12.5 --- Mompantero

Quality location estimate: Erh: 1 km, Erz: 1.9 km, Nf: 18, Gap: 115 °, Rms: 0.25

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.
RSP	GU	2025-10-05 14:38:53.720	0.013	0	0.36	0.37	2025-10-05 14:38:55.658	0.100	2	0.02	1.69	15.8
BHB	GU	2025-10-05 14:38:55.500	0.019	0	-0.04	1.84	2025-10-05 14:38:58.609	0.070	2	-0.72	0.51	28.4
RRL	GU	2025-10-05 14:38:56.505	0.020	0	0.01	1.96	2025-10-05 14:39:00.604	0.040	0	-0.34	0.58	33.4
LATO	IV	2025-10-05 14:38:56.784	0.020	0	0.02	1.94	2025-10-05 14:39:01.122	0.040	0	-0.36	0.59	36.9
LSD	GU	2025-10-05 14:38:58.214	0.020	0	0.02	1.86	2025-10-05 14:39:03.297	0.040	0	-0.55	0.59	44.9
PZZ	GU	2025-10-05 14:39:01.258	0.020	0	0.24	0.82	2025-10-05 14:39:08.980	0.100	2	0.16	1.16	62.7
CIRO	GU	2025-10-05 14:39:01.974	0.020	0	-0.73	0.51	2025-10-05 14:39:09.825	0.040	0	-1.58	0.08	69.0
MRGE	IV	2025-10-05 14:39:04.104	0.020	0	0.04	1.55	2025-10-05 14:39:12.445	0.040	0	-1.21	0.19	79.1
DIX	CH	2025-10-05 14:39:09.874	0.020	0	-0.08	1.30	2025-10-05 14:39:22.983	0.040	0	-0.86	0.46	115.1

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
RSP	GU	HH	0.47	1.27e-1	15.8	46
BHB	GU	HH	0.65	5.66e-2	28.4	160
RRL	GU	HH	0.25	1.23e-2	33.4	240
LSD	GU	HH	0.74	3.11e-2	44.9	359
PZZ	GU	HH	0.91	3.97e-2	62.7	182
CIRO	GU	HH	0.95	1.11e-2	69.0	29
MRGE	IV	HH	0.63	6.32e-3	79.1	355

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.
(°)

RSP

HHZ

3.5464e-5

3.0591e-6

4.2758e-7

1.2346e-7

7.2169e-8

3.4262e-5

1.3331e-6

1.7379e-7

4.7379e-8

15.8

RSP

HHN

2.6625e-5

2.2723e-6

6.1537e-7

2.1743e-7

1.2445e-7

4.1975e-5

1.8674e-6

2.2802e-7

4.6378e-8

15.8

RSP

HHE

2.7945e-5

2.9231e-6

9.6897e-7

2.3552e-7

1.5350e-7

6.4944e-5

3.7122e-6

2.5164e-7

5.3190e-8

15.8

BHB

HHZ

7.6209e-6

8.3534e-7

3.1889e-7

9.1243e-8

7.1305e-8

1.7028e-5

8.3035e-7

1.4862e-7

1.6712e-8

28.4

160

BHB

HHN

8.1404e-6

9.1798e-7

4.5068e-7

1.1063e-7

6.8563e-8

1.2754e-5

1.5090e-6

1.1587e-7

2.1506e-8

28.4

160

BHB

HHE

7.3297e-6

9.2897e-7

3.0974e-7

6.5342e-8

4.4000e-8

2.3330e-5

1.1274e-6

9.5585e-8

1.7318e-8

28.4

160

RRL

HHZ

1.3398e-6

1.7474e-7

6.6132e-8

2.1607e-8

1.3828e-8

3.6639e-6

2.4831e-7

2.0771e-8

4.3870e-9

33.4

240

RRL

HHN

1.5361e-6

2.0916e-7

9.4257e-8

3.7792e-8

1.9049e-8

3.9248e-6

5.8830e-7

2.2687e-8

4.3622e-9

33.4

240

RRL

HHE

1.2302e-6

1.8080e-7

9.7694e-8

4.0690e-8

2.2605e-8

3.2308e-6

3.5425e-7

3.0558e-8

3.9921e-9

33.4

240

LSD

HHZ

4.1564e-6

3.8752e-7

1.3447e-7

3.8180e-8

2.2943e-8

4.7748e-6

6.1423e-7

3.5142e-8

8.2522e-9

44.9

359

LSD

HHN

5.3352e-6

6.0968e-7

1.5024e-7

4.4474e-8

2.5996e-8

5.4396e-6

6.6377e-7

4.1759e-8

1.0415e-8

44.9

359

LSD

HHE

1.2310e-5

9.0998e-7

2.9208e-7

8.3394e-8

3.9365e-8

8.1271e-6

1.3151e-6

6.3841e-8

1.9003e-8

44.9

359

PZZ

HHZ

2.3790e-6

5.1759e-7

3.4076e-7

8.5625e-8

5.4589e-8

7.7973e-6

1.3848e-6

8.3146e-8

1.2758e-8

62.7

182

PZZ

HHN

3.5530e-6

5.1746e-7

3.1946e-7

7.9326e-8

4.2384e-8

1.0198e-5

1.3539e-6

7.2128e-8

1.4206e-8

62.7

182

PZZ

HHE

2.6687e-6

5.0577e-7

4.1631e-7

1.0256e-7

5.6860e-8

7.3503e-6

1.8816e-6

8.6859e-8

1.2399e-8

62.7

182

CIRO

HHZ

1.6246e-6

1.5073e-7

6.5327e-8

2.4547e-8

1.3320e-8

2.1366e-6

3.8083e-7

1.6980e-8

3.4356e-9

69.0

CIRO

HHN

1.8767e-6

2.3407e-7

7.9707e-8

2.6929e-8

1.3747e-8

5.7356e-6

3.0955e-7

2.2160e-8

4.8425e-9

69.0

CIRO

HHE

2.0262e-6

2.3119e-7

9.8135e-8

3.2601e-8

1.7390e-8

3.9302e-6

2.8425e-7

2.5006e-8

4.9843e-9

69.0

MRGE

HHZ

1.2027e-6

1.0345e-7

2.9035e-8

1.3906e-8

9.1952e-9

1.1436e-6

1.6771e-7

1.3672e-8

2.3139e-9

79.1

355

MRGE

HHN

1.8158e-6

1.4870e-7

4.9481e-8

2.5227e-8

1.3593e-8

2.3866e-6

2.0060e-7

1.8439e-8

3.5610e-9

79.1

355

MRGE

HHE

1.2801e-6

9.6414e-8

4.2101e-8

1.7873e-8

1.6278e-8

1.2804e-6

1.7485e-7

2.6278e-8

2.6551e-9

79.1

355

DIX

HHZ

6.4292e-7

9.7683e-8

5.8067e-8

2.9497e-8

1.6254e-8

1.4360e-6

2.4190e-7

2.4907e-8

3.6562e-9

115.1

DIX

HHN

7.2563e-7

1.2128e-7

7.6693e-8

4.1018e-8

2.6638e-8

1.3566e-6

3.3012e-7

4.5200e-8

3.3315e-9

115.1

DIX

HHE

9.7221e-7

1.1009e-7

8.6895e-8

3.7437e-8

1.8395e-8

1.9789e-6

3.8702e-7

2.6514e-8

4.2741e-9

115.1

*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 Cozie , magnitude (ML): 0.7 2025-10-05 14:38:50 (UTC)

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): 0.7
2025-10-05 14:38:50 (UTC)