RSNI - Manually revised location

MANUAL Location - Area: Alpi Marittime , magnitude (M_L): 0.4
2026-01-07 09:57:03 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-01-08 07:36:45

Earthquake info - Manual location

Event - ID :	260107095614
Magnitude (M_L) :	0.4 +/- 0.2
Origin Time :	2026-01-07 09:57:03.101 (UTC)
Location :	Latitude: 43.796 N, Longitude: 7.360 E
Area :	Alpi Marittime
Depth (km) :	6.01
Distances (km) :	15.7 --- Olivetta San Michele 17.7 --- Airole 20.0 --- Ventimiglia 21.6 --- Camporosso 22.1 --- Dolceacqua 22.1 --- Rocchetta Nervina 22.5 --- Vallecrosia 23.4 --- San Biagio della Cima 23.9 --- Soldano 24.3 --- Bordighera 24.4 --- Isolabona 24.7 --- Vallebona 25.8 --- Apricale 26.0 --- Perinaldo 27.0 --- Seborga 28.7 --- Ospedaletti 28.8 --- Pigna 29.3 --- Castel Vittorio 31.4 --- Baiardo 33.4 --- San Remo

Quality location estimate: Erh: 0.9 km, Erz: 1.5 km, Nf: 20, Gap: 235 °, 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.
ESCA	FR	2026-01-07 09:57:05.050	0.072	3	-0.12	1.42	2026-01-07 09:57:05.558	0.040	0	-1.07	0.05	7.7
BURY	GU	2026-01-07 09:57:07.067	0.020	0	-0.07	1.80	2026-01-07 09:57:10.086	0.052	1	0.05	1.69	17.0
TURF	FR	2026-01-07 09:57:07.896	0.020	0	0.04	1.80	2026-01-07 09:57:11.442	0.040	0	0.01	1.80	21.0
SAOF	FR	2026-01-07 09:57:09.228	0.020	0	0.03	1.86	2026-01-07 09:57:13.693	0.040	0	-0.09	1.54	27.2
BIGN	GU	2026-01-07 09:57:09.855	0.020	0	0.24	0.41	2026-01-07 09:57:14.526	0.040	0	-0.06	1.62	32.3
MLIG	IV	2026-01-07 09:57:09.953	0.020	0	-0.57	0.29	2026-01-07 09:57:14.648	0.040	0	-1.50	0.01	34.2
IMI	GU	2026-01-07 09:57:11.788	0.020	0	0.14	1.08	2026-01-07 09:57:17.867	0.279	7	-0.24	0.88	45.2
MGRO	GU	2026-01-07 09:57:12.206	0.020	0	-0.09	1.61	2026-01-07 09:57:18.691	0.040	0	-0.56	0.33	45.8
ISO	FR	2026-01-07 09:57:13.216	0.020	0	0.76	0.04	2026-01-07 09:57:20.359	0.040	0	1.06	0.04	50.2
PZZ	GU	2026-01-07 09:57:18.129	0.020	0	-0.09	1.43	2026-01-07 09:57:28.204	0.040	0	-0.70	0.31	81.7

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
BURY	GU	HH	0.36	8.18e-2	17.0	95
TURF	FR	HH	0.26	4.45e-2	21.0	7
BIGN	GU	EH	0.58	4.12e-2	32.3	74
IMI	GU	HH	0.38	1.81e-2	45.2	73
MGRO	GU	HH	0.62	2.26e-2	45.8	53
ISO	FR	HH	0.11	5.79e-3	50.2	330
PZZ	GU	HH	0.69	1.34e-2	81.7	346

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.
(°)

ESCA

HHZ

7.0123e-5

1.4193e-5

9.7011e-6

2.6893e-6

1.4638e-6

3.2352e-4

7.3670e-5

2.1516e-6

3.4682e-7

7.7

ESCA

HHN

1.4162e-4

2.5801e-5

1.6527e-5

4.2158e-6

2.5487e-6

5.8602e-4

9.4706e-5

3.8924e-6

5.5336e-7

7.7

ESCA

HHE

7.1664e-5

1.6264e-5

1.3248e-5

7.4833e-6

5.0023e-6

2.9695e-4

1.2626e-4

6.3598e-6

5.4243e-7

7.7

BURY

HHZ

3.4831e-6

8.3107e-7

5.3135e-7

2.4991e-7

1.3438e-7

1.2050e-5

3.0135e-6

1.6726e-7

2.0057e-8

17.0

BURY

HHN

6.1306e-6

9.5256e-7

6.3760e-7

2.7181e-7

1.9157e-7

1.9123e-5

3.3121e-6

3.1457e-7

3.2471e-8

17.0

BURY

HHE

5.9316e-6

7.4799e-7

4.4996e-7

1.9255e-7

1.0378e-7

1.7585e-5

3.1205e-6

1.3749e-7

2.1629e-8

17.0

TURF

HHZ

1.0575e-6

2.4230e-7

2.1788e-7

1.1573e-7

1.0477e-7

4.7338e-6

1.3140e-6

1.1464e-7

7.8078e-9

21.0

TURF

HHN

1.2844e-6

3.8626e-7

2.8620e-7

1.4537e-7

1.2188e-7

4.3929e-6

1.6199e-6

1.6115e-7

1.3378e-8

21.0

TURF

HHE

1.5850e-6

4.2783e-7

3.8963e-7

1.9585e-7

1.3688e-7

4.0028e-6

2.5577e-6

1.3769e-7

1.1175e-8

21.0

SAOF

HHZ

4.3105e-7

1.2425e-7

1.2307e-7

6.9091e-8

3.1803e-8

9.7901e-7

6.9013e-7

4.8857e-8

4.3027e-9

27.2

SAOF

HHN

4.8354e-7

1.4847e-7

1.0941e-7

6.6506e-8

4.9344e-8

1.8713e-6

6.1181e-7

4.6837e-8

4.7327e-9

27.2

SAOF

HHE

3.2390e-7

9.5753e-8

9.4306e-8

9.0957e-8

4.7108e-8

1.2230e-6

5.2317e-7

5.5132e-8

3.6080e-9

27.2

BIGN

EHZ

7.8418e-7

2.0930e-7

1.3632e-7

9.3938e-8

7.0891e-8

1.9724e-6

7.7598e-7

8.7577e-8

6.8527e-9

32.3

BIGN

EHN

2.2249e-6

5.0404e-7

4.1245e-7

1.6302e-7

9.3754e-8

6.4350e-6

3.4274e-6

1.1653e-7

1.7107e-8

32.3

BIGN

EHE

1.4580e-6

2.6897e-7

2.3936e-7

1.3181e-7

8.0863e-8

4.7218e-6

1.5133e-6

1.1325e-7

1.0122e-8

32.3

IMI

HHZ

4.2884e-7

1.3143e-7

9.6086e-8

8.1870e-8

5.3467e-8

1.4937e-6

5.9179e-7

5.7667e-8

4.5113e-9

45.2

IMI

HHN

8.3232e-7

1.4531e-7

1.4054e-7

1.1833e-7

7.6840e-8

2.8956e-6

5.8245e-7

8.3729e-8

7.4761e-9

45.2

IMI

HHE

5.1703e-7

1.4659e-7

1.1850e-7

1.0035e-7

4.2492e-8

1.9722e-6

7.4508e-7

5.4542e-8

5.9087e-9

45.2

MGRO

HHZ

2.2004e-7

6.4881e-8

5.9136e-8

3.7534e-8

2.1250e-8

9.8730e-7

3.4230e-7

2.6286e-8

2.3168e-9

45.8

MGRO

HHN

3.1405e-7

1.6685e-7

1.1468e-7

1.2601e-7

1.3849e-7

8.6915e-7

5.4160e-7

2.3494e-7

4.1711e-8

45.8

MGRO

HHE

3.8323e-7

8.7654e-8

8.4026e-8

5.7308e-8

3.2335e-8

1.3938e-6

4.0063e-7

4.2229e-8

4.0600e-9

45.8

ISO

HHZ

2.1535e-7

3.6448e-8

2.4813e-8

1.6099e-8

1.0460e-8

8.0913e-7

1.0838e-7

1.3070e-8

1.3365e-9

50.2

330

ISO

HHN

2.7849e-7

5.3886e-8

3.9464e-8

2.3185e-8

1.4030e-8

9.2620e-7

2.9866e-7

1.8020e-8

1.6671e-9

50.2

330

ISO

HHE

2.2463e-7

5.3062e-8

2.9739e-8

2.6697e-8

1.8340e-8

7.5562e-7

1.3787e-7

2.3692e-8

1.5276e-9

50.2

330

PZZ

HHZ

6.7505e-7

1.4002e-7

9.6767e-8

3.7439e-8

2.5118e-8

1.7433e-6

4.8654e-7

3.2746e-8

4.0575e-9

81.7

346

PZZ

HHN

4.9022e-7

1.3466e-7

1.0703e-7

5.5615e-8

3.1663e-8

1.2857e-6

5.7376e-7

4.0046e-8

4.0642e-9

81.7

346

PZZ

HHE

4.5493e-7

1.1404e-7

8.8666e-8

4.0381e-8

2.7129e-8

1.4249e-6

4.7686e-7

3.8526e-8

2.9629e-9

81.7

346

*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): 0.4 2026-01-07 09:57:03 (UTC)

MANUAL Location - Area: Alpi Marittime , magnitude (M_L): 0.4
2026-01-07 09:57:03 (UTC)