RSNI - Manually revised location

MANUAL Location - Area: Alpi Atesine , magnitude (M_L): 3.7
2025-09-02 07:49:51 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-02 10:57:06

Earthquake info - Manual location

Event - ID :	250902074851
Magnitude (M_L) :	3.7 +/- 0.2
Origin Time :	2025-09-02 07:49:51.395 (UTC)
Location :	Latitude: 46.740 N, Longitude: 10.530 E
Area :	Alpi Atesine
Depth (km) :	6.01
Distances (km) :	5.5 --- Malles Venosta 7.8 --- Glorenza 7.8 --- Curon Venosta 9.2 --- Sluderno 11.5 --- Tubre 14.2 --- Prato Allo Stelvio 15.6 --- Stelvio 18.9 --- Lasa 22.3 --- Silandro 27.3 --- Martello 28.5 --- Laces 29.2 --- Senales 30.9 --- Castelbello-Ciardes 32.1 --- Valfurva 32.3 --- Bormio 33.0 --- Valdidentro 36.6 --- Valdisotto 37.4 --- Livigno 37.5 --- Naturno 40.2 --- Plaus

Quality location estimate: Erh: 1.7 km, Erz: 3.7 km, Nf: 31, Gap: 216 °, 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.
BRMO	IV	2025-09-02 07:49:57.550	0.018	0	0.02	1.45	2025-09-02 07:50:01.729	0.098	2	-0.12	1.48	32.5
DAVOX	CH	2025-09-02 07:50:00.620	0.026	1	-0.33	1.23	2025-09-02 07:50:07.275	0.151	4	-0.72	0.63	50.4
BERNI	CH	2025-09-02 07:50:00.990	0.028	1	-0.04	1.51	2025-09-02 07:50:07.650	0.161	5	-0.30	1.26	53.4
GAGG	ST	2025-09-02 07:50:05.410	0.041	2	-0.32	1.27	2025-09-02 07:50:15.420	0.404	8	-0.23	1.03	80.2
VDL	CH	2025-09-02 07:50:06.605	0.044	2	0.11	1.21	2025-09-02 07:50:17.707	0.040	0	0.30	0.79	87.7
TUE	MN	2025-09-02 07:50:07.890	0.049	2	0.07	1.28	2025-09-02 07:50:19.430	0.287	7	-0.19	1.12	95.3
BAG8	IV	2025-09-02 07:50:09.310	0.053	2	0.09	1.22	2025-09-02 07:50:20.821	0.606	9	-0.65	0.71	102.2
DOSS	ST	2025-09-02 07:50:10.160	0.055	2	-0.49	0.98	2025-09-02 07:50:23.233	0.040	0	-0.91	0.47	108.2
CTI	IV	2025-09-02 07:50:11.190	0.058	2	-0.22	1.37	2025-09-02 07:50:25.390	0.346	7	0.04	0.97	115.4
BALD	NI	2025-09-02 07:50:11.970	0.061	3	-0.13	1.39	2025-09-02 07:50:27.264	0.040	0	0.12	1.03	119.8
MDI	IV	2025-09-02 07:50:12.800	0.064	3	-0.28	1.29	2025-09-02 07:50:27.571	0.040	0	-1.10	0.33	124.8
MUGIO	CH	2025-09-02 07:50:16.070	0.077	3	0.05	1.21	2025-09-02 07:50:32.960	0.040	0	-0.61	0.82	146.1
FUSIO	CH	2025-09-02 07:50:16.130	0.074	3	-0.07	1.31	2025-09-02 07:50:33.126	0.040	0	-0.53	0.90	146.3
VARE	IV	2025-09-02 07:50:21.266	0.020	0	1.56	0.00	2025-09-02 07:50:41.523	0.040	0	1.51	0.00	166.5
FIESA	CH	2025-09-02 07:50:22.876	0.020	0	-0.48	1.00	2025-09-02 07:50:48.622	0.040	0	2.97	0.00	188.1
SERM	IV	2025-09-02 07:50:25.615	0.020	0	0.64	0.38	2025-09-02 07:50:50.891	0.040	0	0.79	0.39	201.3
MMK	CH	2025-09-02 07:50:27.208	0.020	0	0.77	0.28	2025-09-02 07:50:51.068	0.040	0	-0.70	0.70	211.1

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
BRMO	IV	HH	3.67	5.03e+1	32.5	202
DAVOX	CH	HH	3.86	3.26e+1	50.4	275
VDL	CH	HH	3.16	1.96e+0	87.7	251
CTI	IV	HH	3.97	6.63e+0	115.4	131
BALD	NI	HH	3.94	5.56e+0	119.8	169
MDI	IV	HH	3.59	2.25e+0	124.8	210
MUGIO	CH	HH	3.96	1.61e+0	146.1	232
FUSIO	CH	HH	3.53	1.28e+0	146.3	258
VARE	IV	HH	3.83	1.80e+0	166.5	235
MMK	CH	HH	3.65	3.12e-1	211.1	250

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.
(°)

BRMO

HHZ

1.8373e-3

2.1456e-4

1.8797e-4

8.8196e-5

5.2484e-5

4.4613e-3

7.3462e-4

5.9359e-5

5.8494e-6

32.5

202

BRMO

HHN

2.0132e-3

2.8101e-4

1.6175e-4

9.9687e-5

4.2915e-5

5.0606e-3

6.3313e-4

5.2845e-5

5.6012e-6

32.5

202

BRMO

HHE

1.5803e-3

4.4409e-4

3.0642e-4

2.3561e-4

1.0968e-4

3.1247e-3

1.2899e-3

1.3718e-4

1.3798e-5

32.5

202

DAVOX

HHZ

1.3013e-3

2.2571e-4

1.8098e-4

6.8048e-5

3.6992e-5

5.4606e-3

9.0555e-4

4.4612e-5

5.0323e-6

50.4

275

DAVOX

HHN

1.4649e-3

3.1196e-4

3.1556e-4

1.9309e-4

7.0224e-5

4.7316e-3

1.8840e-3

1.0653e-4

9.3608e-6

50.4

275

DAVOX

HHE

1.8072e-3

3.3574e-4

3.0814e-4

1.2703e-4

4.5198e-5

4.8038e-3

1.3854e-3

5.7159e-5

8.8469e-6

50.4

275

VDL

HHZ

1.1637e-4

2.7444e-5

2.3885e-5

1.0191e-5

5.9187e-6

3.5575e-4

1.6578e-4

6.2325e-6

6.2781e-7

87.7

251

VDL

HHN

1.3649e-4

2.9136e-5

2.2782e-5

6.8940e-6

3.5136e-6

3.1422e-4

1.0805e-4

5.3282e-6

7.2003e-7

87.7

251

VDL

HHE

5.5860e-5

1.2776e-5

1.5336e-5

6.9856e-6

3.3813e-6

1.4076e-4

1.0049e-4

5.1186e-6

4.2865e-7

87.7

251

CTI

HHZ

9.9902e-5

2.4852e-5

2.3045e-5

1.3338e-5

5.6959e-6

4.0684e-4

1.6394e-4

7.1529e-6

7.4071e-7

115.4

131

CTI

HHN

2.5639e-4

7.3326e-5

6.5334e-5

2.9937e-5

1.0782e-5

8.4035e-4

4.6756e-4

1.3174e-5

1.9447e-6

115.4

131

CTI

HHE

2.8614e-4

6.9695e-5

6.2513e-5

2.7321e-5

1.0677e-5

8.6281e-4

4.5837e-4

1.6570e-5

2.0336e-6

115.4

131

BALD

HHZ

4.0432e-5

1.3240e-5

1.2148e-5

9.8493e-6

5.8221e-6

1.3842e-4

7.3781e-5

7.2417e-6

6.9647e-7

119.8

169

BALD

HHN

7.1340e-5

2.1726e-5

2.0875e-5

1.3323e-5

6.8077e-6

2.9990e-4

1.1996e-4

8.0341e-6

6.8876e-7

119.8

169

BALD

HHE

9.0394e-5

3.9135e-5

3.4463e-5

2.0728e-5

1.3187e-5

2.3250e-4

2.3025e-4

1.7654e-5

1.2630e-6

119.8

169

MDI

HHZ

3.4654e-5

9.6377e-6

9.4857e-6

5.9750e-6

3.5115e-6

7.4859e-5

6.9479e-5

5.9189e-6

3.2198e-7

124.8

210

MDI

HHN

4.6857e-5

1.3789e-5

1.4945e-5

1.0599e-5

4.8741e-6

1.4752e-4

1.2247e-4

6.4428e-6

4.8751e-7

124.8

210

MDI

HHE

6.2600e-5

1.8003e-5

1.9535e-5

8.3672e-6

3.5179e-6

1.7792e-4

1.2351e-4

4.5124e-6

5.4281e-7

124.8

210

MUGIO

HHZ

1.8531e-5

6.9104e-6

5.4347e-6

3.7858e-6

1.9126e-6

4.9231e-5

3.6148e-5

2.2862e-6

2.1147e-7

146.1

232

MUGIO

HHN

3.0044e-5

8.7326e-6

8.6513e-6

4.9494e-6

2.3326e-6

6.5603e-5

7.1438e-5

3.3418e-6

3.4978e-7

146.1

232

MUGIO

HHE

2.4802e-5

1.0541e-5

7.7641e-6

6.4607e-6

2.9714e-6

6.8989e-5

4.4367e-5

3.1546e-6

3.8658e-7

146.1

232

FUSIO

HHZ

2.4299e-5

5.8570e-6

4.8262e-6

2.2453e-6

1.1022e-6

5.4378e-5

2.4467e-5

1.1945e-6

1.5151e-7

146.3

258

FUSIO

HHN

1.7556e-5

4.3570e-6

3.9362e-6

3.2378e-6

2.1669e-6

5.0036e-5

1.7442e-5

2.6101e-6

1.9398e-7

146.3

258

FUSIO

HHE

1.7820e-5

4.8392e-6

4.7385e-6

2.0784e-6

1.0130e-6

5.8304e-5

2.3994e-5

1.1605e-6

1.3810e-7

146.3

258

VARE

HHZ

2.3894e-5

6.7102e-6

5.6482e-6

4.0581e-6

1.4112e-6

1.0515e-4

3.2580e-5

2.0274e-6

2.3319e-7

166.5

235

VARE

HHN

2.4850e-5

6.7669e-6

5.5352e-6

3.0974e-6

1.2767e-6

8.1757e-5

4.2200e-5

1.8264e-6

1.8928e-7

166.5

235

VARE

HHE

1.2176e-5

3.6376e-6

3.9056e-6

1.9104e-6

9.5493e-7

4.3821e-5

2.8588e-5

1.0946e-6

9.9562e-8

166.5

235

FIESA

HHZ

1.8421e-5

7.7501e-6

6.5015e-6

8.4256e-6

8.9841e-6

5.7925e-5

3.6084e-5

9.7588e-6

5.0777e-7

188.1

261

FIESA

HHN

1.7060e-5

7.2574e-6

6.8068e-6

5.5726e-6

2.2890e-6

3.0896e-5

2.4219e-5

2.2159e-6

2.4449e-7

188.1

261

FIESA

HHE

1.4696e-5

5.5419e-6

5.5780e-6

4.7296e-6

2.1570e-6

3.2876e-5

3.9989e-5

2.2307e-6

1.6671e-7

188.1

261

MMK

HHZ

3.6577e-6

1.0160e-6

1.0744e-6

5.0542e-7

2.3298e-7

1.1863e-5

6.3122e-6

3.3070e-7

3.1330e-8

211.1

250

MMK

HHN

3.4420e-6

9.7381e-7

1.0053e-6

4.9572e-7

2.1580e-7

1.0584e-5

6.8606e-6

2.4731e-7

2.6828e-8

211.1

250

MMK

HHE

2.6758e-6

9.0601e-7

9.7200e-7

5.5374e-7

2.2813e-7

8.8992e-6

6.4988e-6

2.7259e-7

2.8095e-8

211.1

250

*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 Atesine , magnitude (ML): 3.7 2025-09-02 07:49:51 (UTC)

MANUAL Location - Area: Alpi Atesine , magnitude (M_L): 3.7
2025-09-02 07:49:51 (UTC)