MANUAL Location - Area: Alpi Marittime , magnitude (ML): -0.1
2025-10-11 14:37:39 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-13 06:30:37

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Earthquake info - Manual location
Event - ID :251011143652
Magnitude (ML) :-0.1 +/- 0.1
Origin Time :2025-10-11 14:37:39.879 (UTC)
Location : Latitude: 43.990 N, Longitude: 7.707 E
Area :Alpi Marittime
Depth (km) :4.02
Distances (km) : 4.7 --- Triora
5.3 --- Molini di Triora
7.1 --- Pigna
7.2 --- Castel Vittorio
9.6 --- Baiardo
10.9 --- Briga Alta
12.3 --- Montegrosso Pian Latte
12.5 --- Mendatica
12.6 --- Apricale
12.9 --- Montalto Ligure
13.1 --- Ceriana
13.1 --- Carpasio
13.3 --- Isolabona
13.8 --- Rezzo
13.8 --- Rocchetta Nervina
13.8 --- Perinaldo
13.8 --- Badalucco
14.0 --- Cosio di Arroscia
15.7 --- Pornassio
16.7 --- Dolceacqua

Quality location estimate: Erh: 0.8 km, Erz: 0.9 km, Nf: 13, Gap: 95 °, Rms: 0.14


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.
MLIGIV2025-10-11 14:37:41.5370.0200-0.021.892025-10-11 14:37:42.0680.0400-0.780.024.4
MGROGU2025-10-11 14:37:42.8200.00500.011.942025-10-11 14:37:44.5400.0340-0.540.0411.5
SAOFFR2025-10-11 14:37:43.5730.02000.650.00--:---.-----.---.-- 12.9
BIGNGU2025-10-11 14:37:43.2910.02000.231.162025-10-11 14:37:45.4540.04000.021.8314.4
IMIGU2025-10-11 14:37:43.9000.00800.231.152025-10-11 14:37:46.5270.0551-0.011.7118.0
GBOSGU2025-10-11 14:37:46.3230.06020.290.862025-10-11 14:37:50.1820.1283-0.160.8730.3
STVGU2025-10-11 14:37:46.0590.0200-1.770.002025-10-11 14:37:53.3520.04000.051.5541.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MGRO GUHH-0.224.34e-211.554
BIGN GUEH-0.074.01e-214.4170
IMI GUHH-0.053.88e-218.0121
GBOS GUHH-0.104.98e-330.321
STV GUHH-0.044.03e-341.9313


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.
(°)
MGRO GUHHZ2.5945e-63.7315e-72.4011e-71.8445e-79.7567e-82.8164e-61.2143e-61.2887e-71.0347e-811.554
MGRO GUHHN2.7397e-63.9742e-73.2229e-71.7220e-76.9768e-83.7785e-61.6184e-61.0784e-79.6912e-911.554
MGRO GUHHE3.2305e-65.8537e-73.7181e-71.2718e-76.8870e-87.7664e-62.1301e-61.0310e-71.3160e-811.554
BIGN GUEHZ2.1265e-62.9766e-71.2842e-75.1170e-83.3498e-84.5447e-65.0543e-74.0989e-85.7189e-914.4170
BIGN GUEHN9.0181e-68.2865e-73.2077e-71.2914e-71.1021e-71.1987e-51.0649e-61.8348e-72.7009e-814.4170
BIGN GUEHE7.3781e-68.3033e-73.4475e-71.0293e-75.4094e-82.0157e-51.1240e-69.2964e-81.7551e-814.4170
IMI GUHHZ1.9858e-62.3242e-71.6544e-75.6545e-82.8033e-83.4076e-61.1863e-64.6648e-85.5803e-918.0121
IMI GUHHN6.0528e-67.1711e-73.4390e-71.0283e-75.1485e-81.2472e-51.4866e-69.1382e-81.8389e-818.0121
IMI GUHHE2.4443e-63.1561e-72.1968e-77.4477e-83.6253e-85.0583e-62.0288e-65.9512e-89.6264e-918.0121
GBOS GUHHZ6.4762e-77.0338e-86.0198e-83.2310e-81.3654e-81.2741e-63.9796e-71.7133e-81.7890e-930.321
GBOS GUHHN1.2077e-61.1853e-76.9136e-84.7199e-82.9942e-87.7799e-73.5025e-74.0164e-84.1383e-930.321
GBOS GUHHE9.3002e-77.4945e-84.6493e-81.6135e-87.6993e-99.7074e-71.6657e-71.1847e-81.8910e-930.321
STV GUHHZ5.9495e-79.8819e-84.2271e-81.5820e-81.9094e-81.4013e-62.1434e-73.4412e-83.1788e-941.9313
STV GUHHN4.7359e-75.8305e-82.9907e-81.1691e-86.9837e-99.4729e-72.0093e-79.8266e-91.3990e-941.9313
STV GUHHE6.8327e-78.5810e-83.8740e-81.1610e-86.4219e-91.3177e-61.3932e-79.8088e-91.6074e-941.9313
*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)

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