RSNI - Manually revised location

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): 1.8
2021-04-12 22:14:18 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-04-13 06:38:51

Earthquake info - Manual location

Event - ID :	210412221258
Magnitude (M_L) :	1.8 +/- 0.2
Origin Time :	2021-04-12 22:14:18.494 (UTC)
Location :	Latitude: 44.463 N, Longitude: 7.163 E
Area :	Alpi Cozie
Depth (km) :	14.40
Distances (km) :	2.6 --- Celle di Macra 4.4 --- Macra 5.5 --- Marmora 5.7 --- Stroppo 6.4 --- Canosio 7.0 --- Castelmagno 7.9 --- San Damiano Macra 8.9 --- Prazzo 10.0 --- Cartignano 10.4 --- Pradleves 10.5 --- Elva 13.1 --- Sampeyre 13.8 --- Acceglio 13.9 --- Monterosso Grana 14.3 --- Roccabruna 15.1 --- Frassino 15.4 --- Sambuco 15.9 --- Dronero 16.1 --- Casteldelfino 16.7 --- Melle

Quality location estimate: Erh: 0.8 km, Erz: 1.3 km, Nf: 52, Gap: 46 °, Rms: 0.30

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.
PZZ	GU	2021-04-12 22:14:21.910	0.014	0	0.08	1.25	2021-04-12 22:14:23.829	0.048	1	-0.41	1.26	17.0
STV	GU	2021-04-12 22:14:24.160	0.016	0	0.01	1.49	2021-04-12 22:14:27.640	0.093	2	-0.43	1.19	31.4
SURF	FR	2021-04-12 22:14:24.500	0.017	0	-0.01	1.49	2021-04-12 22:14:28.490	0.095	2	-0.41	1.23	31.4
ISO	FR	2021-04-12 22:14:25.540	0.019	0	0.51	0.27	2021-04-12 22:14:29.330	0.106	3	-0.13	1.42	35.7
ENR	GU	2021-04-12 22:14:24.970	0.019	0	0.04	1.42	2021-04-12 22:14:29.300	0.108	3	-0.11	1.42	36.4
BHB	GU	2021-04-12 22:14:26.380	0.022	1	-0.01	1.47	2021-04-12 22:14:31.830	0.134	4	-0.02	1.31	44.7
TURF	FR	2021-04-12 22:14:29.440	0.030	1	0.17	0.90	2021-04-12 22:14:36.380	0.177	5	-0.56	0.92	59.0
GBOS	GU	2021-04-12 22:14:28.940	0.036	1	-0.20	1.40	2021-04-12 22:14:36.180	0.183	5	-0.38	1.18	61.1
RRL	GU	2021-04-12 22:14:29.370	0.030	1	-0.18	1.41	2021-04-12 22:14:36.929	0.182	5	-0.40	1.15	61.2
OGAG	FR	2021-04-12 22:14:29.660	0.075	3	-0.22	1.41	2021-04-12 22:14:37.330	0.189	5	-0.60	0.86	62.8
SAOF	FR	2021-04-12 22:14:29.880	0.032	1	-0.06	1.44	2021-04-12 22:14:37.242	0.439	9	-0.77	0.67	63.2
MVIF	FR	2021-04-12 22:14:30.630	0.033	1	0.37	0.45	2021-04-12 22:14:38.090	0.194	5	-0.67	0.75	64.5
ESCA	FR	2021-04-12 22:14:32.000	0.038	1	0.13	1.03	2021-04-12 22:14:40.780	0.223	6	-0.51	0.97	74.2
BNI	MN	2021-04-12 22:14:32.190	0.039	1	-0.21	1.41	2021-04-12 22:14:41.520	0.877	9	-0.59	0.60	77.4
RSP	GU	2021-04-12 22:14:31.360	0.039	1	-0.43	1.20	2021-04-12 22:14:40.130	0.423	9	-1.10	0.39	78.2
RORO	GU	2021-04-12 22:14:32.390	0.042	2	-0.31	1.34	2021-04-12 22:14:42.389	0.378	8	-0.39	0.97	83.0
BURY	GU	2021-04-12 22:14:32.790	0.042	2	-0.51	1.03	2021-04-12 22:14:42.700	0.314	7	-1.00	0.44	83.1
MON	FR	2021-04-12 22:14:34.483	0.020	0	0.78	0.09	2021-04-12 22:14:44.482	0.040	0	-0.01	1.20	85.2
OGDI	FR	2021-04-12 22:14:34.670	0.044	2	0.48	0.36	2021-04-12 22:14:45.071	0.040	0	-0.32	1.21	85.6
IMI	GU	2021-04-12 22:14:32.850	0.043	2	-0.38	1.27	2021-04-12 22:14:42.680	0.258	7	-1.11	0.32	85.9
CANO	GU	2021-04-12 22:14:33.870	0.046	2	-0.49	1.07	2021-04-12 22:14:44.324	0.351	7	-1.41	0.19	91.2
MONC	IV	2021-04-12 22:14:34.530	0.046	2	-0.25	1.38	2021-04-12 22:14:46.927	0.040	0	-0.28	1.22	92.0
OGMO	FR	2021-04-12 22:14:34.940	0.046	2	0.15	1.00	2021-04-12 22:14:45.350	0.496	9	-0.81	0.63	92.2
QLNO	GU	2021-04-12 22:14:34.830	0.048	2	-0.13	1.40	2021-04-12 22:14:45.830	0.289	7	-1.07	0.38	96.3
ROTM	GU	2021-04-12 22:14:36.990	0.052	2	0.29	0.68	2021-04-12 22:14:50.380	0.356	7	0.34	0.68	104.4
PCP	GU	2021-04-12 22:14:37.050	0.055	2	0.17	0.95	2021-04-12 22:14:49.755	0.393	8	-0.47	0.88	110.9

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
PZZ	GU	HH	2.19	9.26e+0	17.0	323
STV	GU	HH	2.12	1.01e+0	31.4	152
ISO	FR	HH	1.53	3.04e-1	35.7	196
ENR	GU	HH	2.11	1.52e+0	36.4	142
GBOS	GU	HH	2.15	2.19e-1	61.1	114
RRL	GU	HH	1.59	7.85e-2	61.2	330
RSP	GU	HH	1.47	5.61e-2	78.2	6
RORO	GU	HH	1.93	1.42e-1	83.0	118
BURY	GU	HH	1.60	6.15e-2	83.1	157
IMI	GU	HH	1.66	8.71e-2	85.9	136
CANO	GU	HH	1.97	1.17e-1	91.2	108
MONC	IV	HH	1.60	7.11e-2	92.0	41
QLNO	GU	HH	1.80	6.86e-2	96.3	99
ROTM	GU	HH	1.68	1.64e-1	104.4	65
PCP	GU	HH	1.77	5.03e-2	110.9	85

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.
(°)

PZZ

HHZ

5.0861e-4

9.3551e-5

4.4990e-5

1.1824e-5

5.1422e-6

1.6818e-3

2.2609e-4

8.3924e-6

1.7764e-6

17.0

323

PZZ

HHN

1.0118e-3

1.4946e-4

5.3843e-5

1.7558e-5

9.2783e-6

1.9051e-3

1.9884e-4

1.6114e-5

3.5647e-6

17.0

323

PZZ

HHE

1.0749e-3

1.6429e-4

7.2206e-5

2.0575e-5

1.2621e-5

3.2222e-3

2.4126e-4

2.0177e-5

3.3589e-6

17.0

323

STV

HHZ

9.3351e-5

1.2069e-5

5.7730e-6

1.6079e-6

9.2367e-7

1.1916e-4

2.7391e-5

1.3698e-6

2.6626e-7

31.4

152

STV

HHN

1.3734e-4

1.6628e-5

5.3694e-6

1.1417e-6

6.4988e-7

1.6118e-4

1.5686e-5

1.4150e-6

3.6705e-7

31.4

152

STV

HHE

1.3625e-4

1.9609e-5

7.9384e-6

2.7156e-6

1.7453e-6

2.5815e-4

2.8388e-5

2.8307e-6

5.1774e-7

31.4

152

ISO

HHZ

3.5487e-5

5.3734e-6

2.1930e-6

6.7196e-7

3.8698e-7

5.0868e-5

8.1993e-6

6.0229e-7

1.0300e-7

35.7

196

ISO

HHN

3.8607e-5

4.0800e-6

1.4687e-6

4.9577e-7

2.5801e-7

4.6087e-5

6.1525e-6

4.1363e-7

7.9475e-8

35.7

196

ISO

HHE

3.6978e-5

6.7749e-6

2.1862e-6

7.2857e-7

4.6375e-7

1.0141e-4

8.2102e-6

8.1309e-7

1.6568e-7

35.7

196

ENR

HHZ

1.8094e-4

1.6932e-5

3.9471e-6

1.5381e-6

7.6781e-7

1.9994e-4

1.4352e-5

1.2709e-6

2.8939e-7

36.4

142

ENR

HHN

5.1210e-4

5.0722e-5

7.8895e-6

2.5791e-6

1.3911e-6

4.8319e-4

3.0532e-5

3.3937e-6

9.0577e-7

36.4

142

ENR

HHE

5.9346e-4

5.0155e-5

8.3316e-6

2.8927e-6

1.7136e-6

4.0736e-4

2.7174e-5

3.8715e-6

1.0202e-6

36.4

142

BHB

HHZ

2.2694e-5

3.5832e-6

1.6292e-6

4.4296e-7

2.1142e-7

6.9783e-5

4.3721e-6

3.6305e-7

8.0812e-8

44.7

BHB

HHN

1.3980e-5

2.6512e-6

1.3303e-6

4.1260e-7

1.7114e-7

3.5172e-5

5.7492e-6

2.7890e-7

6.0865e-8

44.7

BHB

HHE

2.3787e-5

2.9091e-6

1.4111e-6

4.0285e-7

2.2785e-7

4.3652e-5

3.9288e-6

3.4244e-7

5.2662e-8

44.7

GBOS

HHZ

1.4976e-5

2.5942e-6

1.7857e-6

4.9307e-7

2.4203e-7

5.2657e-5

7.3523e-6

3.7311e-7

6.9154e-8

61.1

114

GBOS

HHN

1.5061e-5

2.9010e-6

1.7624e-6

4.5895e-7

2.3701e-7

3.6579e-5

7.7222e-6

3.5300e-7

6.8484e-8

61.1

114

GBOS

HHE

1.3647e-5

2.6144e-6

1.9991e-6

6.7696e-7

3.4406e-7

4.2623e-5

8.0134e-6

5.0271e-7

7.7580e-8

61.1

114

RRL

HHZ

4.3963e-6

6.1828e-7

3.4600e-7

1.8970e-7

9.0283e-8

1.0366e-5

1.1967e-6

1.1172e-7

1.3596e-8

61.2

330

RRL

HHN

8.7019e-6

1.4121e-6

9.0205e-7

2.4357e-7

1.0934e-7

2.7875e-5

3.1676e-6

1.5813e-7

3.1860e-8

61.2

330

RRL

HHE

6.5891e-6

1.2786e-6

7.7045e-7

2.5765e-7

1.1344e-7

1.4659e-5

2.8492e-6

1.5293e-7

2.6708e-8

61.2

330

SAOF

HHZ

6.3190e-6

1.0657e-6

7.8633e-7

2.2623e-7

1.0639e-7

1.2475e-5

4.0769e-6

1.5927e-7

2.5511e-8

63.2

149

SAOF

HHN

4.7669e-6

7.3202e-7

5.5946e-7

2.7895e-7

1.8874e-7

1.1117e-5

3.0661e-6

2.1498e-7

3.0392e-8

63.2

149

SAOF

HHE

5.3199e-6

8.8592e-7

5.3358e-7

1.6747e-7

1.0930e-7

1.1548e-5

3.5336e-6

1.7798e-7

1.7995e-8

63.2

149

RSP

HHZ

4.2993e-6

5.3912e-7

3.2748e-7

9.3289e-8

4.0334e-8

1.2180e-5

1.4576e-6

6.7519e-8

1.3623e-8

78.2

RSP

HHN

6.0941e-6

1.0610e-6

5.7562e-7

1.2937e-7

6.4967e-8

1.6783e-5

1.9022e-6

1.0955e-7

2.3239e-8

78.2

RSP

HHE

6.4622e-6

9.7674e-7

4.6988e-7

1.3120e-7

6.1060e-8

2.6739e-5

1.7361e-6

9.4762e-8

2.1372e-8

78.2

RORO

HHZ

1.0663e-5

1.8710e-6

1.1186e-6

3.4089e-7

1.9570e-7

5.2218e-5

4.4839e-6

2.9708e-7

4.5169e-8

83.0

118

RORO

HHN

1.0810e-5

1.9322e-6

1.4266e-6

3.9723e-7

2.0067e-7

2.7326e-5

8.1047e-6

3.1218e-7

4.8041e-8

83.0

118

RORO

HHE

9.3809e-6

1.5931e-6

1.0627e-6

3.3279e-7

1.5522e-7

2.8640e-5

4.6471e-6

2.3573e-7

4.0997e-8

83.0

118

BURY

HHZ

4.4577e-6

5.6353e-7

3.4898e-7

1.8035e-7

7.4282e-8

1.1885e-5

1.8726e-6

9.9348e-8

1.4714e-8

83.1

157

BURY

HHN

8.6201e-6

9.1749e-7

5.5535e-7

2.4054e-7

1.1373e-7

1.4637e-5

2.4183e-6

1.5703e-7

2.5874e-8

83.1

157

BURY

HHE

7.0264e-6

9.5372e-7

5.4415e-7

1.8202e-7

7.2267e-8

2.3809e-5

2.5491e-6

1.0649e-7

2.1797e-8

83.1

157

IMI

HHZ

6.0054e-6

8.0835e-7

4.4862e-7

1.0830e-7

6.5151e-8

1.4392e-5

2.2306e-6

9.1998e-8

1.9788e-8

85.9

136

IMI

HHN

1.4043e-5

1.8368e-6

8.5560e-7

2.2870e-7

1.0579e-7

3.8245e-5

3.1046e-6

1.8164e-7

3.9391e-8

85.9

136

IMI

HHE

1.1880e-5

1.3649e-6

5.4743e-7

1.4216e-7

6.9266e-8

2.6933e-5

1.9597e-6

1.1806e-7

2.4362e-8

85.9

136

CANO

HHZ

1.0033e-5

1.4377e-6

6.6168e-7

1.6097e-7

1.0702e-7

2.2594e-5

2.7168e-6

1.5166e-7

3.0390e-8

91.2

108

CANO

HHN

8.9683e-6

1.6276e-6

9.8577e-7

3.3102e-7

1.4153e-7

2.8254e-5

4.9853e-6

1.8103e-7

3.6272e-8

91.2

108

CANO

HHE

9.4660e-6

2.0425e-6

1.1006e-6

2.9198e-7

1.5556e-7

3.4087e-5

5.6277e-6

2.5190e-7

4.7270e-8

91.2

108

MONC

HHZ

2.9902e-6

7.8578e-7

6.7172e-7

2.2189e-7

9.2837e-8

1.2943e-5

3.8400e-6

1.3072e-7

1.8565e-8

92.0

MONC

HHN

2.9107e-6

8.0296e-7

6.7238e-7

2.8547e-7

1.0417e-7

1.1177e-5

3.2960e-6

1.4745e-7

2.0658e-8

92.0

MONC

HHE

4.2378e-6

9.0398e-7

7.9311e-7

2.8002e-7

1.0951e-7

1.1767e-5

4.2646e-6

1.4640e-7

2.2183e-8

92.0

QLNO

HHZ

4.8809e-6

6.3449e-7

3.6630e-7

1.3779e-7

6.4068e-8

1.3769e-5

1.4170e-6

7.6680e-8

1.2798e-8

96.3

QLNO

HHN

8.3732e-6

1.0864e-6

5.8526e-7

1.7810e-7

8.0392e-8

3.0557e-5

2.9623e-6

1.3081e-7

2.4379e-8

96.3

QLNO

HHE

8.1671e-6

1.2130e-6

7.6851e-7

2.0338e-7

9.0788e-8

1.7795e-5

4.0901e-6

1.4601e-7

2.9046e-8

96.3

ROTM

HHZ

7.9763e-6

1.0578e-6

6.3240e-7

2.2323e-7

9.4710e-8

2.2340e-5

3.1533e-6

1.4063e-7

2.5131e-8

104.4

ROTM

HHN

1.0820e-5

2.0090e-6

1.5094e-6

6.5372e-7

2.6810e-7

5.4181e-5

5.9714e-6

3.8202e-7

5.7055e-8

104.4

ROTM

HHE

7.6839e-6

1.3040e-6

1.0039e-6

3.4148e-7

1.8713e-7

2.0383e-5

5.4851e-6

2.6338e-7

3.5048e-8

104.4

PCP

HHZ

2.8626e-6

5.1880e-7

4.0872e-7

1.6715e-7

8.6354e-8

6.3425e-6

2.2922e-6

1.1978e-7

1.6523e-8

110.9

PCP

HHN

3.7101e-6

7.0412e-7

4.5364e-7

1.4285e-7

7.2667e-8

1.0200e-5

2.1035e-6

1.0867e-7

1.5889e-8

110.9

PCP

HHE

3.8553e-6

5.6214e-7

3.8750e-7

1.3269e-7

6.6639e-8

1.1290e-5

1.9435e-6

9.2489e-8

1.4729e-8

110.9

*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): 1.8 2021-04-12 22:14:18 (UTC)

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): 1.8
2021-04-12 22:14:18 (UTC)