RSNI - Manually revised location

MANUAL Location - Area: Alpi Marittime , magnitude (M_L): 0.3
2025-06-13 07:36:25 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-06-13 09:10:30

Earthquake info - Manual location

Event - ID :	250613073512
Magnitude (M_L) :	0.3 +/- 0.2
Origin Time :	2025-06-13 07:36:25.675 (UTC)
Location :	Latitude: 43.952 N, Longitude: 7.241 E
Area :	Alpi Marittime
Depth (km) :	11.12
Distances (km) :	23.4 --- Olivetta San Michele 26.6 --- Airole 29.6 --- Rocchetta Nervina 32.6 --- Dolceacqua 32.9 --- Isolabona 33.9 --- Pigna 34.3 --- Apricale 34.4 --- Ventimiglia 34.4 --- Camporosso 34.5 --- Entracque 34.8 --- Castel Vittorio 35.4 --- Perinaldo 35.8 --- Soldano 35.9 --- San Biagio della Cima 36.8 --- Vallecrosia 37.3 --- Vallebona 38.3 --- Valdieri 38.5 --- Limone Piemonte 38.6 --- Bordighera 38.8 --- Baiardo

Quality location estimate: Erh: 0.8 km, Erz: 1.2 km, Nf: 20, Gap: 101 °, Rms: 0.18

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.
MVIF	FR	2025-06-13 07:36:27.200	0.006	0	-1.76	0.00	2025-06-13 07:36:28.579	0.040	0	-2.85	0.00	14.6
TURF	FR	2025-06-13 07:36:29.250	0.012	0	-0.02	2.00	2025-06-13 07:36:32.113	0.132	4	0.13	1.28	16.6
ESCA	FR	2025-06-13 07:36:29.922	0.020	0	-0.00	2.07	2025-06-13 07:36:32.626	0.040	0	-0.39	0.80	20.8
SAOF	FR	2025-06-13 07:36:31.698	0.020	0	0.08	1.63	2025-06-13 07:36:35.762	0.040	0	-0.15	1.21	27.9
ISO	FR	2025-06-13 07:36:31.749	0.020	0	0.01	2.02	2025-06-13 07:36:35.620	0.040	0	-0.49	0.62	32.3
STV	GU	2025-06-13 07:36:32.035	0.020	0	-0.35	0.82	2025-06-13 07:36:36.840	0.040	0	-0.23	1.03	35.4
ENR	GU	2025-06-13 07:36:32.490	0.020	0	0.05	1.86	2025-06-13 07:36:37.483	0.040	0	0.30	0.48	36.1
MLIG	IV	2025-06-13 07:36:33.341	0.020	0	-0.05	1.72	2025-06-13 07:36:38.260	0.040	0	-0.64	0.35	37.3
MGRO	GU	2025-06-13 07:36:35.299	0.020	0	0.22	0.72	2025-06-13 07:36:41.530	0.040	0	-0.20	1.21	48.2
PZZ	GU	2025-06-13 07:36:38.630	0.020	0	1.10	0.00	2025-06-13 07:36:44.870	0.040	0	-0.84	0.18	63.7

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
TURF	FR	HH	0.04	4.09e-2	16.6	78
ESCA	FR	HH	0.24	4.24e-2	20.8	142
STV	GU	HH	0.28	1.17e-2	35.4	12
ENR	GU	HH	0.63	5.10e-2	36.1	25
MGRO	GU	HH	0.20	7.91e-3	48.2	77
PZZ	GU	HH	0.51	1.51e-2	63.7	351

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.
(°)

TURF

HHZ

2.7432e-6

3.0860e-7

1.9300e-7

2.0188e-7

9.8268e-8

1.8159e-6

1.2601e-6

1.2262e-7

8.3996e-9

16.6

TURF

HHN

1.5231e-6

2.6600e-7

2.9428e-7

1.9013e-7

7.2196e-8

3.9281e-6

1.7448e-6

8.2806e-8

9.5391e-9

16.6

TURF

HHE

1.8696e-6

3.1953e-7

2.6329e-7

2.5937e-7

1.8433e-7

3.5559e-6

1.2674e-6

1.8078e-7

1.3149e-8

16.6

ESCA

HHZ

1.0872e-6

3.4722e-7

3.1844e-7

2.0978e-7

6.7981e-8

1.4676e-6

2.0896e-6

8.9141e-8

1.0810e-8

20.8

142

ESCA

HHN

1.3272e-6

3.1021e-7

3.1489e-7

1.7547e-7

6.1433e-8

2.4294e-6

1.8035e-6

7.7644e-8

9.3740e-9

20.8

142

ESCA

HHE

1.6072e-6

3.2520e-7

3.5944e-7

2.0779e-7

6.0952e-8

1.6888e-6

2.2280e-6

7.9887e-8

1.1024e-8

20.8

142

SAOF

HHZ

3.8078e-7

6.9821e-8

7.5708e-8

5.7194e-8

2.6726e-8

7.0708e-7

5.8148e-7

3.0427e-8

2.5228e-9

27.9

SAOF

HHN

3.2691e-7

8.4188e-8

7.2282e-8

5.4761e-8

2.5714e-8

5.0363e-7

3.8800e-7

2.8602e-8

2.6022e-9

27.9

SAOF

HHE

3.8193e-7

7.7021e-8

7.8323e-8

5.8529e-8

2.8825e-8

8.4230e-7

5.2888e-7

2.9952e-8

3.0699e-9

27.9

ISO

HHZ

5.3624e-7

7.5138e-8

4.8877e-8

2.9728e-8

1.1342e-8

8.3381e-7

3.2477e-7

1.4115e-8

1.7830e-9

32.3

329

ISO

HHN

7.1047e-7

8.6771e-8

5.4180e-8

3.6960e-8

1.6094e-8

1.1567e-6

2.7663e-7

1.8722e-8

2.0369e-9

32.3

329

ISO

HHE

4.1078e-7

6.9159e-8

5.3660e-8

3.0751e-8

1.4025e-8

9.7403e-7

2.0186e-7

1.9979e-8

1.5439e-9

32.3

329

STV

HHZ

6.9807e-7

1.1305e-7

7.7173e-8

5.8699e-8

2.4881e-8

1.5375e-6

2.6526e-7

3.0920e-8

3.1390e-9

35.4

STV

HHN

6.8926e-7

1.1105e-7

8.5972e-8

6.7875e-8

2.6845e-8

1.1552e-6

3.5734e-7

3.1238e-8

3.2682e-9

35.4

STV

HHE

5.7185e-7

1.0069e-7

7.5736e-8

6.0635e-8

5.1129e-8

8.9595e-7

4.0076e-7

8.7157e-8

3.8164e-9

35.4

ENR

HHZ

2.0915e-6

2.8067e-7

1.8930e-7

1.1592e-7

3.7317e-8

2.1943e-6

1.0506e-6

5.1171e-8

6.1585e-9

36.1

ENR

HHN

5.2360e-6

4.9560e-7

2.8142e-7

1.3799e-7

6.4338e-8

5.3527e-6

1.8691e-6

8.9875e-8

1.3423e-8

36.1

ENR

HHE

5.3743e-6

5.5913e-7

3.5780e-7

2.1808e-7

7.8593e-8

5.9015e-6

1.9242e-6

1.0379e-7

1.4557e-8

36.1

MGRO

HHZ

2.5734e-7

7.7920e-8

5.7912e-8

4.6004e-8

1.7015e-8

3.2653e-7

4.1319e-7

1.9930e-8

2.4150e-9

48.2

MGRO

HHN

3.2918e-7

7.2554e-8

5.9959e-8

4.6410e-8

2.1134e-8

4.8701e-7

3.6736e-7

2.6316e-8

2.5133e-9

48.2

MGRO

HHE

3.8216e-7

4.6129e-8

4.7456e-8

2.4450e-8

1.0428e-8

3.3161e-7

3.4402e-7

1.2683e-8

1.3995e-9

48.2

PZZ

HHZ

5.0949e-7

1.2460e-7

9.1192e-8

6.2414e-8

3.6877e-8

8.6315e-7

5.5799e-7

4.1342e-8

4.4734e-9

63.7

351

PZZ

HHN

5.8640e-7

1.2917e-7

1.1765e-7

1.0373e-7

5.4387e-8

1.4278e-6

6.6949e-7

7.6318e-8

5.6605e-9

63.7

351

PZZ

HHE

5.8123e-7

1.4775e-7

1.2377e-7

8.4149e-8

4.4356e-8

1.3246e-6

5.9049e-7

5.0481e-8

5.2420e-9

63.7

351

*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 Marittime , magnitude (ML): 0.3 2025-06-13 07:36:25 (UTC)

MANUAL Location - Area: Alpi Marittime , magnitude (M_L): 0.3
2025-06-13 07:36:25 (UTC)