RSNI - Manually revised location

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): 0.5
2024-12-27 06:55:51 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2024-12-27 11:11:58

Earthquake info - Manual location

Event - ID :	241227065529
Magnitude (M_L) :	0.5 +/- 0.2
Origin Time :	2024-12-27 06:55:51.758 (UTC)
Location :	Latitude: 44.686 N, Longitude: 6.827 E
Area :	Alpi Cozie
Depth (km) :	3.99
Distances (km) :	17.4 --- Pontechianale 18.9 --- Bellino 21.9 --- Casteldelfino 26.2 --- Crissolo 26.3 --- Elva 26.6 --- Acceglio 26.8 --- Bobbio Pellice 28.5 --- Sauze di Cesana 28.6 --- Ostana 28.7 --- Prali 28.7 --- Oncino 28.7 --- Prazzo 28.9 --- Claviere 29.4 --- Villar Pellice 29.8 --- Cesana Torinese 30.6 --- Sestriere 30.9 --- Stroppo 31.1 --- Sampeyre 31.8 --- Rora 32.5 --- Canosio

Quality location estimate: Erh: 0.7 km, Erz: 0.9 km, Nf: 20, Gap: 112 °, Rms: 0.23

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	2024-12-27 06:55:56.610	0.011	0	0.05	1.68	2024-12-27 06:55:59.297	0.276	7	-0.77	0.52	23.1
OGAG	FR	2024-12-27 06:55:56.990	0.013	0	-0.01	1.91	2024-12-27 06:56:00.300	0.079	2	-0.35	0.65	25.9
RRL	GU	2024-12-27 06:55:57.295	0.014	0	-0.01	1.91	2024-12-27 06:56:00.722	0.083	2	-0.39	0.63	27.0
PZZ	GU	2024-12-27 06:55:57.804	0.034	1	-0.05	1.65	2024-12-27 06:56:01.440	0.089	2	-0.82	0.49	30.8
BHB	GU	2024-12-27 06:55:59.440	0.020	0	0.03	1.72	2024-12-27 06:56:03.905	0.129	3	-0.76	0.54	38.5
ISO	FR	2024-12-27 06:56:02.597	0.020	0	-0.08	1.43	2024-12-27 06:56:09.960	0.245	6	-0.30	0.93	58.7
RSP	GU	2024-12-27 06:56:03.470	0.032	1	0.13	1.07	2024-12-27 06:56:10.443	0.503	9	-0.96	0.42	62.1
STV	GU	2024-12-27 06:56:02.414	0.020	0	-0.71	0.56	2024-12-27 06:56:10.953	0.100	2	-0.19	1.06	63.1
ENR	GU	2024-12-27 06:56:04.670	0.020	0	0.60	0.05	2024-12-27 06:56:12.982	0.100	2	0.22	0.74	69.3
LSD	GU	2024-12-27 06:56:07.920	0.020	0	-0.02	1.33	2024-12-27 06:56:18.611	0.040	0	-0.51	0.74	89.6

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
OGAG	FR	HH	0.20	2.62e-2	25.9	297
RRL	GU	HH	0.45	2.91e-2	27.0	354
PZZ	GU	HH	0.70	1.01e-1	30.8	131
BHB	GU	HH	0.36	1.61e-2	38.5	64
ISO	FR	HH	0.27	6.08e-3	58.7	162
STV	GU	HH	0.69	9.41e-3	63.1	141
LSD	GU	HH	0.64	5.70e-3	89.6	16

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.
(°)

OGAG

HHZ

1.0952e-6

3.1656e-7

2.5985e-7

1.3435e-7

5.4078e-8

3.1339e-6

1.6980e-6

7.3401e-8

1.0280e-8

25.9

297

OGAG

HHN

9.8381e-7

2.4105e-7

1.8211e-7

1.0737e-7

5.2386e-8

3.1293e-6

9.9448e-7

6.3572e-8

8.3071e-9

25.9

297

OGAG

HHE

1.0461e-6

2.3514e-7

2.4540e-7

1.2402e-7

5.2782e-8

1.8181e-6

2.2777e-6

6.3331e-8

7.8271e-9

25.9

297

RRL

HHZ

1.8125e-6

2.3685e-7

1.4544e-7

4.8438e-8

2.0105e-8

3.6150e-6

5.4115e-7

2.9653e-8

6.1168e-9

27.0

354

RRL

HHN

2.6689e-6

4.2588e-7

2.5127e-7

7.2922e-8

3.4802e-8

5.1335e-6

8.0761e-7

5.8891e-8

1.0900e-8

27.0

354

RRL

HHE

2.0308e-6

4.1170e-7

2.5711e-7

8.6611e-8

3.8053e-8

3.9899e-6

1.0324e-6

6.1483e-8

1.1166e-8

27.0

354

PZZ

HHZ

9.0567e-6

1.4535e-6

6.9736e-7

2.2761e-7

1.3105e-7

1.8093e-5

3.9095e-6

1.8408e-7

2.7223e-8

30.8

131

PZZ

HHN

7.1961e-6

1.2663e-6

7.6858e-7

2.1131e-7

1.2710e-7

1.4630e-5

2.6255e-6

1.9965e-7

3.4143e-8

30.8

131

PZZ

HHE

9.0058e-6

1.5606e-6

9.4528e-7

2.5655e-7

1.3601e-7

1.9525e-5

5.9830e-6

2.0327e-7

3.3015e-8

30.8

131

BHB

HHZ

3.9482e-6

5.0057e-7

1.5508e-7

4.2897e-8

2.2067e-8

7.6222e-6

4.7108e-7

4.1261e-8

8.5848e-9

38.5

BHB

HHN

2.0553e-6

2.8098e-7

1.5467e-7

4.7167e-8

2.2333e-8

4.9427e-6

6.7695e-7

3.4756e-8

5.2113e-9

38.5

BHB

HHE

3.3916e-6

3.8638e-7

1.5076e-7

4.7630e-8

1.8806e-8

5.8895e-6

6.6423e-7

3.3713e-8

7.3486e-9

38.5

ISO

HHZ

5.9173e-7

9.4659e-8

4.1360e-8

1.1155e-8

7.7336e-9

1.2869e-6

1.4898e-7

1.1732e-8

1.9352e-9

58.7

162

ISO

HHN

6.0005e-7

7.3620e-8

3.6088e-8

1.0547e-8

7.2018e-9

1.3669e-6

1.3300e-7

1.3801e-8

1.9761e-9

58.7

162

ISO

HHE

9.3556e-7

1.1525e-7

4.9855e-8

1.6936e-8

1.0202e-8

1.9499e-6

2.7848e-7

1.8049e-8

2.5864e-9

58.7

162

RSP

HHZ

3.7577e-7

4.0517e-8

2.2989e-8

9.0498e-9

3.7189e-9

8.0772e-7

1.0537e-7

5.4101e-9

8.5759e-10

62.1

RSP

HHN

4.3898e-7

6.2696e-8

3.2581e-8

8.8038e-9

5.0202e-9

1.0900e-6

1.2089e-7

7.7401e-9

1.3402e-9

62.1

RSP

HHE

5.0277e-7

6.2089e-8

3.4356e-8

1.0797e-8

5.0325e-9

1.2255e-6

1.1692e-7

8.1089e-9

1.4504e-9

62.1

STV

HHZ

6.3387e-7

1.0449e-7

5.5923e-8

2.8762e-8

3.1206e-8

1.2914e-6

1.9975e-7

6.7056e-8

6.0175e-9

63.1

141

STV

HHN

8.2537e-7

9.9040e-8

4.8519e-8

1.5619e-8

1.1885e-8

1.6233e-6

1.8612e-7

1.7304e-8

2.0785e-9

63.1

141

STV

HHE

1.0603e-6

1.7125e-7

7.1282e-8

2.7095e-8

1.3380e-8

2.8610e-6

2.8129e-7

2.2562e-8

3.6228e-9

63.1

141

ENR

HHZ

2.5908e-6

2.8008e-7

1.0164e-7

3.7637e-8

2.8286e-8

4.7052e-6

4.3454e-7

3.9162e-8

5.8071e-9

69.3

137

ENR

HHN

8.1672e-6

9.7074e-7

1.8676e-7

7.0177e-8

4.1415e-8

9.2131e-6

9.8063e-7

7.6831e-8

1.7248e-8

69.3

137

ENR

HHE

1.0272e-5

8.9140e-7

1.8268e-7

5.2853e-8

3.0541e-8

7.5717e-6

7.2353e-7

7.2878e-8

1.9053e-8

69.3

137

LSD

HHZ

2.8471e-7

4.7109e-8

3.9752e-8

1.5857e-8

8.2316e-9

6.9866e-7

1.9697e-7

1.3102e-8

1.5847e-9

89.6

LSD

HHN

4.2641e-7

5.8208e-8

3.7330e-8

1.4513e-8

6.9963e-9

8.0408e-7

1.9548e-7

8.9379e-9

1.2908e-9

89.6

LSD

HHE

6.4316e-7

8.5630e-8

5.9669e-8

1.9430e-8

1.0430e-8

1.5131e-6

3.9074e-7

1.3985e-8

1.8918e-9

89.6

*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): 0.5 2024-12-27 06:55:51 (UTC)

MANUAL Location - Area: Alpi Cozie , magnitude (M_L): 0.5
2024-12-27 06:55:51 (UTC)