RSNI - Manually revised location

MANUAL Location - Area: Alpi Pennine , magnitude (M_L): 0.4
2021-02-25 04:19:47 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-02-25 07:42:14

Earthquake info - Manual location

Event - ID :	210225041813
Magnitude (M_L) :	0.4 +/- 0.2
Origin Time :	2021-02-25 04:19:47.463 (UTC)
Location :	Latitude: 45.711 N, Longitude: 7.797 E
Area :	Alpi Pennine
Depth (km) :	4.55
Distances (km) :	4.8 --- Challand-Saint-Anselme 5.1 --- Issime 6.6 --- Gaby 7.5 --- Challand-Saint-Victor 7.6 --- Brusson 7.7 --- Emarese 8.1 --- Gressoney-Saint-Jean 8.4 --- Fontainemore 9.2 --- Arnad 9.2 --- Lillianes 9.5 --- Montjovet 9.6 --- Verres 10.7 --- Issogne 10.7 --- Perloz 11.2 --- Champdepraz 11.6 --- Hone 11.9 --- Donnas 11.9 --- Bard 12.2 --- Pont-Saint-Martin 12.5 --- Saint-Vincent

Quality location estimate: Erh: 1.1 km, Erz: 0.7 km, Nf: 18, Gap: 171 °, Rms: 0.14

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.
SATI	GU	2021-02-25 04:19:52.133	0.020	0	-0.04	1.73	2021-02-25 04:19:55.461	0.040	0	0.04	1.60	20.6
CIRO	GU	2021-02-25 04:19:52.490	0.011	0	0.05	1.63	2021-02-25 04:19:55.650	0.066	1	-0.11	1.28	22.6
TRAV	GU	2021-02-25 04:19:52.220	0.012	0	-0.00	1.84	2021-02-25 04:19:54.810	0.069	1	-0.53	0.23	23.0
MMK	CH	2021-02-25 04:19:55.545	0.021	1	0.01	1.69	2021-02-25 04:20:00.440	0.122	3	-0.41	0.43	40.6
DIX	CH	2021-02-25 04:19:57.146	0.020	0	-0.13	1.15	2021-02-25 04:20:03.785	0.156	4	-0.30	0.70	51.6
REMY	GU	2021-02-25 04:19:57.835	0.020	0	0.57	0.22	2021-02-25 04:20:04.479	0.155	4	0.20	0.85	52.1
EMBD	CH	2021-02-25 04:19:58.234	0.020	0	0.18	0.79	2021-02-25 04:20:05.118	0.040	0	-0.07	1.19	56.5
MRGE	IV	2021-02-25 04:19:58.643	0.020	0	0.61	0.20	2021-02-25 04:20:05.631	0.040	0	0.16	0.96	57.8
RSP	GU	2021-02-25 04:20:00.811	0.020	0	-0.02	1.42	2021-02-25 04:20:09.065	0.040	0	-0.84	0.10	75.2

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
SATI	GU	HH	-0.03	1.34e-2	20.6	17
CIRO	GU	HH	0.25	2.01e-2	22.6	236
TRAV	GU	HH	0.58	9.24e-2	23.0	190
MMK	CH	HH	0.53	1.26e-2	40.6	19
DIX	CH	HH	0.63	1.83e-2	51.6	324
REMY	GU	HH	0.47	1.25e-2	52.1	286
MRGE	IV	HH	0.25	5.16e-3	57.8	277
RSP	GU	HH	0.47	6.13e-3	75.2	214

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.
(°)

SATI

HHZ

3.8162e-6

3.3266e-7

5.6932e-8

2.5910e-8

1.0626e-8

2.1941e-6

3.0077e-7

2.0948e-8

6.1317e-9

20.6

SATI

HHN

4.3479e-6

4.2881e-7

7.9893e-8

2.5592e-8

1.6049e-8

3.8607e-6

3.1402e-7

3.6618e-8

6.9078e-9

20.6

SATI

HHE

4.3352e-6

4.3432e-7

9.6698e-8

2.9650e-8

1.8848e-8

8.4215e-6

3.3121e-7

3.3295e-8

8.7252e-9

20.6

CIRO

HHZ

4.0834e-6

5.1181e-7

1.2249e-7

4.0382e-8

2.0980e-8

6.1579e-6

5.2119e-7

3.5053e-8

8.6410e-9

22.6

236

CIRO

HHN

6.7230e-6

5.9813e-7

1.5207e-7

4.4088e-8

2.2381e-8

6.1074e-6

6.7791e-7

4.0984e-8

1.1183e-8

22.6

236

CIRO

HHE

6.1528e-6

5.2257e-7

1.1020e-7

3.2886e-8

1.8934e-8

4.3840e-6

5.9406e-7

3.7296e-8

1.0843e-8

22.6

236

TRAV

HHZ

8.9570e-6

1.0417e-6

3.1134e-7

9.0625e-8

5.2918e-8

1.0329e-5

9.7980e-7

9.8959e-8

2.2921e-8

23.0

190

TRAV

HHN

1.7656e-5

2.0358e-6

5.7542e-7

1.7107e-7

1.0044e-7

2.3658e-5

1.6583e-6

1.8514e-7

4.0757e-8

23.0

190

TRAV

HHE

1.0505e-5

1.3955e-6

5.3238e-7

1.3734e-7

7.2837e-8

1.6678e-5

2.9608e-6

1.3109e-7

3.1376e-8

23.0

190

MMK

HHZ

1.6528e-6

1.7845e-7

6.2421e-8

2.1270e-8

1.2193e-8

2.7627e-6

3.3245e-7

1.7336e-8

4.3772e-9

40.6

MMK

HHN

2.3738e-6

2.3559e-7

7.2844e-8

1.9967e-8

1.1836e-8

2.4229e-6

3.3718e-7

2.2212e-8

4.2486e-9

40.6

MMK

HHE

3.3308e-6

3.7079e-7

7.5425e-8

2.2215e-8

1.3326e-8

4.4810e-6

2.4496e-7

2.8971e-8

8.0377e-9

40.6

DIX

HHZ

3.5826e-6

3.2048e-7

1.1237e-7

3.6062e-8

1.9059e-8

5.2185e-6

5.1387e-7

3.5477e-8

7.4881e-9

51.6

324

DIX

HHN

6.1656e-6

5.7228e-7

1.5632e-7

5.4043e-8

2.7487e-8

7.6539e-6

6.8864e-7

5.0379e-8

1.1463e-8

51.6

324

DIX

HHE

4.3634e-6

4.2727e-7

1.2249e-7

3.9592e-8

2.0906e-8

6.8033e-6

3.7013e-7

3.9590e-8

9.2516e-9

51.6

324

REMY

HHZ

1.1003e-6

1.6034e-7

6.5655e-8

2.3178e-8

2.1764e-8

2.8513e-6

2.8137e-7

3.6504e-8

6.9782e-9

52.1

286

REMY

HHN

1.6920e-6

2.1278e-7

8.9431e-8

3.5920e-8

1.9897e-8

3.3578e-6

3.1996e-7

3.4172e-8

4.8893e-9

52.1

286

REMY

HHE

1.6483e-6

2.0455e-7

7.5764e-8

2.2422e-8

1.1975e-8

4.2031e-6

3.7267e-7

2.2308e-8

4.4691e-9

52.1

286

MRGE

HHZ

7.6435e-7

6.7749e-8

1.9506e-8

9.9326e-9

5.5915e-9

6.1571e-7

8.6575e-8

8.3131e-9

1.2446e-9

57.8

277

MRGE

HHN

1.7175e-6

1.4628e-7

3.6722e-8

1.4862e-8

8.9961e-9

3.2069e-6

1.3135e-7

1.6468e-8

2.7944e-9

57.8

277

MRGE

HHE

1.4107e-6

1.4610e-7

2.9185e-8

1.1073e-8

7.8317e-9

1.5799e-6

1.0942e-7

1.4510e-8

2.5592e-9

57.8

277

RSP

HHZ

5.3856e-7

6.8249e-8

3.2799e-8

1.3101e-8

7.1141e-9

1.8458e-6

1.3846e-7

1.1499e-8

1.9162e-9

75.2

214

RSP

HHN

8.8919e-7

1.1860e-7

5.8032e-8

2.2129e-8

1.2111e-8

2.4164e-6

2.0024e-7

1.2870e-8

2.4445e-9

75.2

214

RSP

HHE

6.5659e-7

1.0293e-7

5.7562e-8

2.2573e-8

1.1053e-8

2.5992e-6

2.0127e-7

1.5597e-8

2.1364e-9

75.2

214

*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): 0.4 2021-02-25 04:19:47 (UTC)

MANUAL Location - Area: Alpi Pennine , magnitude (M_L): 0.4
2021-02-25 04:19:47 (UTC)