MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.4
2025-07-15 06:02:49 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-15 09:01:27

20 km
Lat : Lon
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Earthquake info - Manual location
Event - ID :250715060130
Magnitude (ML) :0.4 +/- 0.2
Origin Time :2025-07-15 06:02:49.636 (UTC)
Location : Latitude: 44.055 N, Longitude: 7.770 E
Area :Alpi Marittime
Depth (km) :8.77
Distances (km) : 3.6 --- Briga Alta
3.7 --- Mendatica
4.0 --- Montegrosso Pian Latte
5.5 --- Cosio di Arroscia
6.9 --- Triora
7.1 --- Molini di Triora
8.0 --- Pornassio
9.0 --- Rezzo
11.6 --- Pieve di Teco
12.0 --- Armo
13.0 --- Carpasio
14.5 --- Aurigo
15.2 --- Montalto Ligure
15.3 --- Vessalico
15.9 --- Castel Vittorio
15.9 --- Pigna
16.0 --- Ormea
16.3 --- Caprauna
16.5 --- Borgomaro
16.6 --- Caravonica

Quality location estimate: Erh: 0.7 km, Erz: 0.6 km, Nf: 16, Gap: 108 °, Rms: 0.28


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.
MGROGU2025-07-15 06:02:52.1600.00300.001.702025-07-15 06:02:52.9460.0400-1.120.0011.0
MLIGIV2025-07-15 06:02:53.1120.02000.371.322025-07-15 06:02:55.0980.0400-0.011.5913.4
PVTIT2025-07-15 06:02:53.2380.02000.411.372025-07-15 06:02:55.2450.0400-0.001.5915.3
GBOSGU2025-07-15 06:02:54.6840.01400.411.392025-07-15 06:02:57.4670.04000.031.4523.5
ROROGU2025-07-15 06:02:55.4800.01200.810.052025-07-15 06:02:58.4500.04000.230.7726.1
TURFFR2025-07-15 06:02:57.3700.01601.160.002025-07-15 06:03:01.2900.09820.451.0532.7
ENRGU2025-07-15 06:02:56.7720.02000.610.322025-07-15 06:03:01.0600.09620.411.1035.5
STVGU2025-07-15 06:02:57.3290.0200-0.011.512025-07-15 06:03:02.4660.1002-0.130.7942.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MGRO GUHH0.784.63e-111.0115
PVT ITHN0.391.06e-115.398
RORO GUHH0.252.87e-226.175
TURF FRHH0.131.43e-232.7254
ENR GUHH0.383.00e-235.5305
STV GUHH0.328.94e-342.4301


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 GUHHZ3.9967e-53.9794e-61.6017e-66.2810e-72.7045e-73.8545e-54.5694e-64.1575e-78.1053e-811.0115
MGRO GUHHN8.8564e-51.0295e-52.0349e-66.8514e-73.4981e-77.6458e-51.2192e-57.9406e-71.8060e-711.0115
MGRO GUHHE7.1207e-59.9538e-63.1895e-61.1432e-67.0139e-71.2424e-41.3987e-51.2232e-62.5359e-711.0115
PVT ITHNZ2.1834e-52.2224e-68.8698e-73.2244e-71.5461e-72.4515e-55.1713e-61.9942e-73.3835e-815.398
PVT ITHNN2.4170e-52.0408e-69.2162e-73.6589e-71.6261e-72.4891e-52.7482e-62.0581e-74.3944e-815.398
PVT ITHNE3.4998e-53.4148e-64.5858e-72.9014e-71.4702e-71.5006e-52.3009e-61.7718e-72.9134e-815.398
GBOS GUHHZ3.2312e-65.6371e-72.2973e-76.4406e-83.3967e-83.7263e-61.2901e-64.7577e-86.9247e-923.515
GBOS GUHHN6.5361e-61.1591e-66.2455e-76.2065e-75.8271e-78.7154e-62.9449e-68.8926e-76.9726e-823.515
GBOS GUHHE1.9598e-63.0117e-71.6960e-75.9848e-83.3852e-84.5344e-67.6330e-75.3289e-88.2937e-923.515
RORO GUHHZ2.1679e-63.7158e-72.0653e-77.8077e-83.9714e-84.4939e-61.2116e-65.9010e-89.2194e-926.175
RORO GUHHN3.8737e-64.9692e-72.5114e-76.9084e-83.5159e-87.9415e-61.2599e-66.3728e-81.1688e-826.175
RORO GUHHE2.7083e-63.5316e-71.6554e-75.8370e-82.6161e-85.5282e-68.3672e-74.2899e-87.9190e-926.175
TURF FRHHZ7.8054e-71.1080e-76.3335e-83.1368e-81.5068e-81.3650e-63.6711e-71.9669e-82.5966e-932.7254
TURF FRHHN2.3010e-63.1180e-71.0965e-73.9551e-81.9958e-83.9981e-64.7777e-73.2567e-88.0440e-932.7254
TURF FRHHE1.0439e-61.7161e-71.0639e-73.9838e-82.0771e-81.8530e-66.8123e-72.6462e-84.5842e-932.7254
ENR GUHHZ3.0845e-63.7755e-72.0695e-77.8462e-83.5802e-84.9434e-61.1707e-65.2244e-87.8716e-935.5305
ENR GUHHN7.3013e-67.2720e-72.6294e-71.0020e-74.0690e-87.4039e-61.4703e-65.8177e-81.2911e-835.5305
ENR GUHHE5.5647e-65.3548e-71.9710e-77.5452e-83.7158e-87.3891e-61.1325e-65.3752e-81.1169e-835.5305
STV GUHHZ7.1217e-71.1573e-78.2857e-83.3254e-81.3433e-81.4802e-65.2439e-71.9171e-82.7643e-942.4301
STV GUHHN7.6483e-71.0209e-76.5076e-82.8715e-81.2106e-81.3352e-63.7875e-71.5787e-82.6505e-942.4301
STV GUHHE9.4801e-71.1999e-78.3334e-82.5050e-81.1682e-82.2670e-64.7036e-71.8225e-83.0615e-942.4301
*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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