RsniPicker2 Automatic Earthquake Location

AUTOMATIC Location - Area: Alpi Pennine , magnitude (M_L): 0.5
2025-04-25 09:10:18 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-25 09:15:13

Earthquake info - RsniPicker₂ automatic location

Event - ID :	250425090958
Magnitude (M_L) :	0.5 +/- 0.1
Origin Time :	2025-04-25 09:10:18.09 (UTC)
Location :	Latitude: 46.230 N, Longitude: 7.827 E
Area :	Alpi Pennine
Depth (km) :	4.75
Distances (km) :	29.1 --- Antrona Schieranco (VB) 29.9 --- Trasquera (VB) 30.9 --- Bognanco (VB) 31.1 --- Macugnaga (VB) 32.7 --- Varzo (VB) 34.3 --- Ceppo Morelli (VB) 34.5 --- Viganella (VB) 35.4 --- Vanzone con San Carlo (VB) 35.6 --- Seppiana (VB) 36.2 --- Montescheno (VB) 36.4 --- Calasca-Castiglione (VB) 36.7 --- Bannio Anzino (VB) 37.7 --- Crevoladossola (VB) 38.0 --- Domodossola (VB) 38.1 --- Baceno (VB) 38.1 --- Villadossola (VB) 38.3 --- Crodo (VB) 39.2 --- Pallanzeno (VB) 39.2 --- Montecrestese (VB) 39.5 --- Carcoforo (VC)

Quality location estimate:
Erh: 1.2 km, Erz: 0.5 km, Nf: 13, Gap: 98°, Rms: 0.235 s
Stazioni validate: 9

RsniPicker₂ - Automatic location results

Station	Net	P arrival times	P pick err	P pick weight	P res	Nll weight	S arrival time	S pick err	S pick weight	S res	Nll weight	Dist.
EMBD	CH	2025-04-25 09:10:19.995	0.003	0	0.43	0.34	2025-04-25 09:10:20.565	0.015	0	0.00	1.93	5.0
SIMPL	CH	2025-04-25 09:10:21.709	0.007	0	0.00	1.94	2025-04-25 09:10:23.430	0.047	0	-0.73	0.47	15.6
VANNI	CH	--:--	-.---	-	-.--	-.--	2025-04-25 09:10:24.629	0.073	1	0.01	1.49	18.5
LAUCH	CH	2025-04-25 09:10:22.745	0.010	0	0.00	1.93	2025-04-25 09:10:25.285	0.088	1	-0.61	0.57	21.5
MMK	CH	2025-04-25 09:10:23.305	0.012	0	0.50	0.33	2025-04-25 09:10:25.965	0.069	1	-0.02	1.47	23.1
DIX	CH	--:--	-.---	-	-.--	-.--	2025-04-25 09:10:29.940	0.110	2	-0.26	0.70	36.6
SATI	GU	--:--	-.---	-	-.--	-.--	2025-04-25 09:10:30.469	0.236	2	-0.63	0.55	39.9
SENIN	CH	--:--	-.---	-	-.--	-.--	2025-04-25 09:10:31.959	0.130	2	-0.41	0.62	43.4
CIRO	GU	--:--	-.---	-	-.--	-.--	2025-04-25 09:10:40.150	0.408	2	-0.42	0.67	72.9

RsniPicker₂ - Automatic magnitude (M_L) calculation results

Station	Net	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth	Used
MMK	CH	0.40	2.86e-2	23.1	152	SI
DIX	CH	0.60	3.37e-2	36.6	243	SI
SATI	GU	0.30	8.26e-3	39.9	175	SI
CIRO	GU	0.50	3.45e-3	72.9	196	SI

Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation

Station

Net

Channel

PGA
(g)

PGV
(m/s)

PGD
(m)

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.
(°)

MMK

HHZ

1.9188e-6

2.5763e-7

0.0000e+0

1.5496e-7

2.8664e-7

4.0919e-7

4.0925e-6

4.8069e-7

2.7573e-8

5.1127e-9

23.1

152

MMK

HHN

4.4113e-6

5.0499e-7

0.0000e+0

1.4283e-7

2.8221e-7

3.6286e-6

3.7814e-7

3.2918e-8

5.4686e-9

23.1

152

MMK

HHE

3.7425e-6

3.5170e-7

0.0000e+0

1.2772e-7

2.4015e-7

3.5632e-7

2.1482e-6

2.9153e-7

2.2834e-8

6.0295e-9

23.1

152

DIX

HHZ

4.9398e-6

7.1365e-7

0.0000e+0

4.9391e-7

8.3762e-7

1.1812e-6

8.8000e-6

1.0055e-6

8.5036e-8

1.7615e-8

36.6

243

DIX

HHN

5.8557e-6

6.8509e-7

0.0000e+0

4.2683e-7

7.4160e-7

1.0565e-5

9.9424e-7

9.4586e-8

1.4188e-8

36.6

243

DIX

HHE

5.4078e-6

5.7160e-7

0.0000e+0

3.4313e-7

6.1094e-7

8.8404e-7

6.4142e-6

1.0993e-6

9.2055e-8

1.4048e-8

36.6

243

SATI

HHZ

1.9767e-6

1.6052e-7

0.0000e+0

7.7035e-8

1.6038e-7

2.3626e-7

1.7913e-6

1.9967e-7

2.3453e-8

3.9828e-9

39.9

175

SATI

HHN

1.8180e-6

1.9175e-7

0.0000e+0

9.0115e-8

1.6846e-7

2.2687e-6

2.0498e-7

4.3836e-8

4.3496e-9

39.9

175

SATI

HHE

2.2124e-6

2.1587e-7

0.0000e+0

1.1896e-7

2.3134e-7

3.3959e-7

4.0777e-6

2.6994e-7

4.5619e-8

5.1115e-9

39.9

175

CIRO

HHZ

5.4803e-7

5.7840e-8

0.0000e+0

3.1667e-8

5.9661e-8

8.6809e-8

1.0624e-6

1.0252e-7

1.4965e-8

2.6205e-9

72.9

196

CIRO

HHN

6.0036e-7

6.1671e-8

0.0000e+0

3.3392e-8

6.7808e-8

7.4525e-7

1.4128e-7

2.2160e-8

2.4655e-9

72.9

196

CIRO

HHE

9.3946e-7

8.9760e-8

0.0000e+0

4.3831e-8

8.7137e-8

1.3336e-7

1.3234e-6

1.3351e-7

1.3492e-8

2.7218e-9

72.9

196

*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)

AUTOMATIC Location - Area: Alpi Pennine , magnitude (ML): 0.5 2025-04-25 09:10:18 (UTC)

AUTOMATIC Location - Area: Alpi Pennine , magnitude (M_L): 0.5
2025-04-25 09:10:18 (UTC)