RSNI - Manually revised location

MANUAL Location - Area: Francia , magnitude (M_L): 0.9
2024-04-30 21:39:46 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2024-05-02 07:51:17

Earthquake info - Manual location

Event - ID :	240430213855
Magnitude (M_L) :	0.9 +/- 0.2
Origin Time :	2024-04-30 21:39:46.93 (UTC)
Location :	Latitude: 44.321 N, Longitude: 6.255 E
Area :	Francia
Depth (km) :	6.01
Distances (km) :	54.9 --- Argentera 60.8 --- Acceglio 61.9 --- Pietraporzio 65.2 --- Sambuco 66.1 --- Prazzo 67.0 --- Bellino 67.4 --- Canosio 68.4 --- Marmora 69.9 --- Pontechianale 70.6 --- Elva 71.2 --- Casteldelfino 72.2 --- Stroppo 73.1 --- Vinadio 75.6 --- Celle di Macra 76.0 --- Macra 76.7 --- Castelmagno 76.7 --- Aisone 79.2 --- Claviere 79.5 --- Sampeyre 81.6 --- San Damiano Macra

Quality location estimate: Erh: 3.3 km, Erz: 4.1 km, Nf: 20, Gap: 198 °, 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.
OGDI	FR	2024-04-30 21:39:52.020	0.013	0	0.00	1.68	2024-04-30 21:39:55.736	0.245	6	-0.15	1.17	24.5
SURF	FR	2024-04-30 21:39:56.941	0.020	0	0.65	0.29	2024-04-30 21:40:02.970	0.155	4	0.01	1.38	48.1
OGAG	FR	2024-04-30 21:39:57.890	0.033	1	0.00	1.62	2024-04-30 21:40:05.370	0.172	5	-0.14	1.20	57.0
ISO	FR	2024-04-30 21:39:59.755	0.020	0	0.39	0.76	2024-04-30 21:40:07.875	0.040	0	-0.23	1.06	65.5
PZZ	GU	2024-04-30 21:40:00.258	0.020	0	-0.11	1.42	2024-04-30 21:40:09.020	0.040	0	-0.84	0.19	71.8
RRL	GU	2024-04-30 21:40:01.830	0.040	2	0.03	1.52	2024-04-30 21:40:11.250	0.349	7	-1.03	0.21	79.4
STV	GU	2024-04-30 21:40:02.714	0.020	0	0.31	0.96	2024-04-30 21:40:12.978	0.040	0	0.01	1.30	85.9
ENR	GU	2024-04-30 21:40:03.692	0.080	3	-0.07	1.40	2024-04-30 21:40:15.571	0.160	4	0.27	1.05	93.4
BHB	GU	2024-04-30 21:40:04.970	0.051	2	0.34	0.94	2024-04-30 21:40:16.415	0.308	7	-0.56	0.60	98.4
TURF	FR	2024-04-30 21:40:05.959	0.120	5	1.00	0.10	2024-04-30 21:40:18.182	0.160	4	0.11	1.14	98.7

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
OGAG	FR	HH	0.80	2.20e-2	57.0	23
ISO	FR	HH	0.35	5.83e-3	65.5	103
PZZ	GU	HH	0.86	2.62e-2	71.8	73
RRL	GU	HH	0.73	6.17e-3	79.4	32
STV	GU	HH	0.93	8.13e-3	85.9	95
ENR	GU	HH	1.12	2.15e-2	93.4	96
BHB	GU	HH	1.07	1.11e-2	98.4	54
TURF	FR	HH	0.98	9.83e-3	98.7	113

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

8.9520e-7

2.5940e-7

2.1338e-7

8.3495e-8

3.7738e-8

2.7514e-6

1.5493e-6

4.9274e-8

7.9957e-9

57.0

OGAG

HHN

7.6574e-7

2.2169e-7

1.7205e-7

6.2071e-8

2.7978e-8

1.4234e-6

1.2622e-6

4.2509e-8

6.5192e-9

57.0

OGAG

HHE

6.2817e-7

1.9282e-7

1.7160e-7

6.0366e-8

2.8624e-8

1.6779e-6

7.7664e-7

3.8958e-8

5.0119e-9

57.0

ISO

HHZ

5.4519e-7

8.5278e-8

5.0770e-8

1.7296e-8

8.3089e-9

1.4120e-6

1.8342e-7

1.2647e-8

2.0359e-9

65.5

103

ISO

HHN

8.2514e-7

1.0603e-7

6.1719e-8

2.4637e-8

1.1426e-8

1.5306e-6

2.1333e-7

1.6215e-8

2.3045e-9

65.5

103

ISO

HHE

6.4117e-7

1.0140e-7

5.3182e-8

1.8356e-8

1.0804e-8

1.8136e-6

2.2730e-7

2.1258e-8

2.3686e-9

65.5

103

PZZ

HHZ

1.1580e-6

2.6742e-7

2.1676e-7

6.5115e-8

2.9973e-8

4.9734e-6

1.3704e-6

4.2866e-8

6.5013e-9

71.8

PZZ

HHN

1.4995e-6

3.1639e-7

1.8763e-7

7.2157e-8

4.2449e-8

6.3024e-6

7.0471e-7

6.3398e-8

9.1018e-9

71.8

PZZ

HHE

1.3546e-6

3.4172e-7

2.3646e-7

7.9745e-8

4.6998e-8

4.0650e-6

1.1507e-6

6.2284e-8

8.5620e-9

71.8

RRL

HHZ

3.3489e-7

4.8251e-8

2.9240e-8

1.5044e-8

8.2075e-9

8.0623e-7

1.3530e-7

1.3550e-8

1.2880e-9

79.4

RRL

HHN

2.7610e-7

6.0559e-8

4.9736e-8

2.4880e-8

1.0728e-8

1.3135e-6

3.0384e-7

1.5928e-8

1.5752e-9

79.4

RRL

HHE

2.9375e-7

6.8640e-8

5.2049e-8

2.5218e-8

9.3992e-9

6.8187e-7

2.7136e-7

1.2127e-8

1.8088e-9

79.4

STV

HHZ

6.0944e-7

8.2210e-8

7.1316e-8

2.3895e-8

9.5112e-9

1.4133e-6

4.2108e-7

1.5177e-8

2.1732e-9

85.9

STV

HHN

4.3370e-7

8.0067e-8

6.5053e-8

3.3698e-8

2.6583e-8

1.3280e-6

2.9372e-7

4.1092e-8

4.7463e-9

85.9

STV

HHE

4.8831e-7

1.0205e-7

6.4746e-8

3.0369e-8

2.3838e-8

1.3030e-6

3.4450e-7

3.8412e-8

5.5379e-9

85.9

ENR

HHZ

1.4148e-6

1.5992e-7

1.0457e-7

3.4377e-8

1.8986e-8

2.0307e-6

5.2838e-7

3.5094e-8

3.2162e-9

93.4

ENR

HHN

4.7051e-6

5.0902e-7

2.0195e-7

7.1663e-8

4.7377e-8

7.2101e-6

1.2362e-6

8.2374e-8

1.0856e-8

93.4

ENR

HHE

4.4115e-6

4.3951e-7

1.6012e-7

5.5726e-8

2.8003e-8

3.7259e-6

9.8890e-7

4.7053e-8

7.4531e-9

93.4

BHB

HHZ

6.3530e-7

1.2328e-7

1.0331e-7

3.6938e-8

1.3635e-8

2.1866e-6

6.1092e-7

1.9894e-8

3.3438e-9

98.4

BHB

HHN

5.9270e-7

1.6147e-7

9.6763e-8

3.6750e-8

2.0597e-8

1.3677e-6

5.1571e-7

3.4480e-8

4.3726e-9

98.4

BHB

HHE

3.4659e-7

8.1227e-8

7.8699e-8

3.9982e-8

1.4508e-8

8.6546e-7

3.4766e-7

1.8000e-8

2.2833e-9

98.4

TURF

HHZ

6.6710e-7

1.0113e-7

6.3884e-8

3.3418e-8

2.0107e-8

1.7086e-6

2.5002e-7

2.9388e-8

2.7722e-9

98.7

113

TURF

HHN

6.8768e-7

1.3857e-7

7.5285e-8

3.1757e-8

1.8898e-8

1.5390e-6

3.3295e-7

2.5544e-8

3.0045e-9

98.7

113

TURF

HHE

8.1032e-7

1.3925e-7

9.1351e-8

4.1512e-8

1.9393e-8

1.9283e-6

3.8016e-7

2.5544e-8

3.3547e-9

98.7

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: Francia , magnitude (ML): 0.9 2024-04-30 21:39:46 (UTC)

MANUAL Location - Area: Francia , magnitude (M_L): 0.9
2024-04-30 21:39:46 (UTC)