RSNI - Manually revised location

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): 0.1
2024-12-28 05:22:35 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2024-12-30 09:35:50

Earthquake info - Manual location

Event - ID :	241228052038
Magnitude (M_L) :	0.1 +/- 0.1
Origin Time :	2024-12-28 05:22:35.145 (UTC)
Location :	Latitude: 44.544 N, Longitude: 6.868 E
Area :	Alpi Cozie
Depth (km) :	10.51
Distances (km) :	12.2 --- Acceglio 12.5 --- Bellino 15.4 --- Pontechianale 16.2 --- Prazzo 16.8 --- Casteldelfino 17.2 --- Argentera 17.5 --- Elva 19.5 --- Canosio 20.2 --- Marmora 20.9 --- Stroppo 25.0 --- Macra 25.6 --- Celle di Macra 25.7 --- Pietraporzio 25.8 --- Sampeyre 28.0 --- Sambuco 28.7 --- Crissolo 29.5 --- Oncino 30.3 --- Ostana 31.1 --- Castelmagno 31.2 --- San Damiano Macra

Quality location estimate: Erh: 0.7 km, Erz: 1 km, Nf: 14, Gap: 103 °, Rms: 0.22

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.
SURF	FR	2024-12-28 05:22:37.090	0.004	0	-1.06	0.05	2024-12-28 05:22:37.750	0.016	0	-2.62	0.00	13.4
PZZ	GU	2024-12-28 05:22:39.840	0.011	0	0.01	2.18	2024-12-28 05:22:42.689	0.057	1	-0.55	0.62	23.3
OGAG	FR	2024-12-28 05:22:40.306	0.020	0	-2.21	0.00	2024-12-28 05:22:47.661	0.040	0	-0.11	1.64	39.3
ISO	FR	2024-12-28 05:22:43.320	0.020	0	-0.02	2.12	2024-12-28 05:22:48.226	0.040	0	-0.70	0.57	44.0
RRL	GU	2024-12-28 05:22:43.609	0.020	0	0.10	1.46	2024-12-28 05:22:49.312	0.040	0	-0.12	1.58	44.2
BHB	GU	2024-12-28 05:22:44.243	0.020	0	0.57	0.01	2024-12-28 05:22:49.598	0.040	0	-0.03	1.77	46.3
GBOS	GU	2024-12-28 05:22:49.265	0.100	4	-0.64	0.66	2024-12-28 05:22:59.996	0.100	2	-0.12	1.34	84.9

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
PZZ	GU	HH	0.24	5.92e-2	23.3	102
OGAG	FR	HH	-0.04	6.66e-3	39.3	316
ISO	FR	HH	-0.08	4.97e-3	44.0	160
RRL	GU	HH	0.12	5.25e-3	44.2	352
BHB	GU	HH	0.02	5.13e-3	46.3	44

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

5.6487e-6

7.3405e-7

3.5968e-7

9.3667e-8

4.4278e-8

1.6516e-5

1.7824e-6

7.0542e-8

1.4548e-8

23.3

102

PZZ

HHN

6.3372e-6

9.5089e-7

4.5823e-7

1.0682e-7

5.7024e-8

2.5205e-5

2.3879e-6

9.4591e-8

1.9711e-8

23.3

102

PZZ

HHE

5.0980e-6

8.1436e-7

4.7537e-7

1.5909e-7

8.6928e-8

1.4141e-5

3.4835e-6

1.3024e-7

2.2882e-8

23.3

102

OGAG

HHZ

1.3824e-7

5.0329e-8

3.9909e-8

2.5067e-8

2.2010e-8

5.9123e-7

2.2075e-7

3.8278e-8

3.3844e-9

39.3

316

OGAG

HHN

1.5214e-7

3.2425e-8

3.0963e-8

1.0122e-8

5.6010e-9

4.5965e-7

1.2954e-7

8.7912e-9

8.4175e-10

39.3

316

OGAG

HHE

2.1436e-7

5.2100e-8

3.9334e-8

3.7731e-8

3.3810e-8

5.1085e-7

2.2007e-7

5.2411e-8

3.1830e-9

39.3

316

ISO

HHZ

4.2943e-7

8.5011e-8

3.5243e-8

9.3000e-9

6.3796e-9

1.3350e-6

1.2359e-7

9.7911e-9

1.6613e-9

44.0

160

ISO

HHN

4.3044e-7

5.1716e-8

3.3027e-8

1.0393e-8

5.9242e-9

1.3980e-6

1.7850e-7

9.1298e-9

1.3779e-9

44.0

160

ISO

HHE

4.6504e-7

7.2372e-8

4.1299e-8

1.3816e-8

8.1384e-9

1.1342e-6

2.9005e-7

1.2783e-8

1.8005e-9

44.0

160

RRL

HHZ

2.2112e-7

2.9715e-8

2.1408e-8

1.1192e-8

5.7271e-9

4.0800e-7

1.2128e-7

6.4769e-9

8.4040e-10

44.2

352

RRL

HHN

2.7651e-7

5.2238e-8

4.1276e-8

1.4050e-8

7.3699e-9

8.8217e-7

2.4950e-7

1.2587e-8

1.1951e-9

44.2

352

RRL

HHE

2.7774e-7

5.9761e-8

4.5417e-8

1.7965e-8

7.7704e-9

8.4464e-7

2.0502e-7

1.0931e-8

1.5899e-9

44.2

352

BHB

HHZ

6.1894e-7

8.5314e-8

3.2269e-8

8.2501e-9

5.5456e-9

1.3143e-6

1.8175e-7

8.6937e-9

1.6742e-9

46.3

BHB

HHN

4.2055e-7

8.3007e-8

4.2592e-8

1.3082e-8

7.2044e-9

1.2814e-6

1.5489e-7

1.0923e-8

1.9943e-9

46.3

BHB

HHE

4.1247e-7

6.5852e-8

3.1444e-8

1.0170e-8

5.5992e-9

7.3258e-7

1.3975e-7

7.2587e-9

1.4371e-9

46.3

GBOS

HHZ

1.8780e-7

3.2098e-8

2.9304e-8

1.1152e-8

6.0640e-9

7.3955e-7

1.2152e-7

8.5515e-9

9.3697e-10

84.9

113

GBOS

HHN

6.0140e-7

1.2463e-7

5.9423e-8

4.5516e-8

4.1443e-8

1.1917e-6

2.8239e-7

5.9419e-8

4.1326e-9

84.9

113

GBOS

HHE

1.9101e-7

4.6458e-8

3.8106e-8

1.5858e-8

8.3416e-9

6.5466e-7

3.0290e-7

1.0629e-8

1.2341e-9

84.9

113

*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): 0.1 2024-12-28 05:22:35 (UTC)

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): 0.1
2024-12-28 05:22:35 (UTC)