RSNI - Manually revised location

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): -0.0
2021-04-12 02:46:56 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-04-12 08:47:36

Earthquake info - Manual location

Event - ID :	210412024542
Magnitude (M_L) :	-0.0 +/- 0.2
Origin Time :	2021-04-12 02:46:56.778 (UTC)
Location :	Latitude: 44.846 N, Longitude: 6.662 E
Area :	Alpi Cozie
Depth (km) :	2.12
Distances (km) :	12.5 --- Claviere 15.8 --- Cesana Torinese 18.9 --- Sauze di Cesana 21.1 --- Sestriere 24.8 --- Oulx 25.5 --- Sauze d Oulx 26.0 --- Bardonecchia 28.7 --- Pragelato 30.7 --- Salbertrand 30.8 --- Prali 32.4 --- Salza di Pinerolo 33.5 --- Massello 35.0 --- Exilles 36.2 --- Bobbio Pellice 36.6 --- Usseaux 37.1 --- Perrero 37.3 --- Fenestrelle 38.1 --- Pontechianale 39.1 --- Villar Pellice 39.7 --- Chiomonte

Quality location estimate: Erh: 0.9 km, Erz: 1 km, Nf: 14, Gap: 127 °, Rms: 0.15

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.
OGAG	FR	2021-04-12 02:46:59.530	0.025	1	0.00	1.68	2021-04-12 02:47:00.817	0.040	0	-0.62	0.20	12.1
RRL	GU	2021-04-12 02:47:00.380	0.027	1	0.27	0.18	2021-04-12 02:47:02.405	0.040	0	0.02	1.61	13.7
BNI	MN	2021-04-12 02:47:01.715	0.020	0	-0.02	1.62	2021-04-12 02:47:04.654	0.040	0	-0.41	0.42	23.1
OGMO	FR	2021-04-12 02:47:05.078	0.020	0	0.08	1.30	2021-04-12 02:47:10.062	0.040	0	-0.44	0.47	40.3
BHB	GU	2021-04-12 02:47:06.220	0.045	2	0.03	1.40	2021-04-12 02:47:12.364	0.040	0	-0.19	0.83	47.5
PZZ	GU	2021-04-12 02:47:06.753	0.020	0	-0.02	1.40	2021-04-12 02:47:13.739	0.040	0	-0.06	1.10	52.2
RSP	GU	2021-04-12 02:47:08.060	0.020	0	0.08	1.24	2021-04-12 02:47:15.259	0.040	0	-0.39	0.56	58.2

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
RRL	GU	HH	-0.27	1.90e-2	13.7	50
BHB	GU	HH	0.07	5.42e-3	47.5	91
PZZ	GU	HH	0.12	9.33e-3	52.2	136
RSP	GU	HH	-0.09	2.92e-3	58.2	55

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.
(°)

RRL

HHZ

2.3374e-6

3.3849e-7

1.0204e-7

2.9948e-8

1.6746e-8

5.9541e-6

3.4728e-7

2.6094e-8

6.2616e-9

13.7

RRL

HHN

1.1123e-6

2.9186e-7

1.5012e-7

5.1627e-8

2.8857e-8

2.7005e-6

6.4201e-7

4.1476e-8

6.9296e-9

13.7

RRL

HHE

2.7186e-6

2.3263e-7

8.8770e-8

3.7863e-8

1.8468e-8

4.3316e-6

3.2181e-7

3.1067e-8

5.6746e-9

13.7

BHB

HHZ

6.5783e-7

8.5474e-8

4.3790e-8

2.7625e-8

1.0782e-8

1.5588e-6

1.2023e-7

1.7597e-8

2.1471e-9

47.5

BHB

HHN

3.9467e-7

5.5561e-8

2.7980e-8

2.4782e-8

3.1229e-8

1.0057e-6

1.0494e-7

5.7015e-8

3.9374e-9

47.5

BHB

HHE

4.4301e-7

6.2341e-8

3.7963e-8

2.2542e-8

9.1492e-9

1.0815e-6

1.2077e-7

1.3070e-8

1.8425e-9

47.5

PZZ

HHZ

4.1266e-7

5.2807e-8

3.9202e-8

1.8607e-8

1.1984e-8

7.8134e-7

1.6562e-7

1.5531e-8

1.8080e-9

52.2

136

PZZ

HHN

3.3967e-7

5.6040e-8

3.5487e-8

2.0678e-8

1.9246e-8

1.0636e-6

1.7605e-7

3.5041e-8

1.6491e-9

52.2

136

PZZ

HHE

4.6075e-7

9.7716e-8

5.1786e-8

3.5670e-8

4.8674e-8

1.4638e-6

1.8842e-7

8.4276e-8

4.8635e-9

52.2

136

RSP

HHZ

2.6570e-7

3.2801e-8

1.6965e-8

1.0731e-8

7.1165e-9

4.2755e-7

6.7079e-8

9.3981e-9

8.9333e-10

58.2

RSP

HHN

3.0609e-7

4.0785e-8

2.2928e-8

1.1560e-8

7.4954e-9

7.5668e-7

8.6309e-8

1.0988e-8

1.0812e-9

58.2

RSP

HHE

3.9257e-7

4.6976e-8

2.5676e-8

1.3373e-8

6.6157e-9

8.6787e-7

9.1703e-8

9.1695e-9

1.1938e-9

58.2

*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): -0.0 2021-04-12 02:46:56 (UTC)

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): -0.0
2021-04-12 02:46:56 (UTC)