MANUAL Location - Area: Alpi Marittime , magnitude (ML): -0.1
2025-07-19 11:24:50 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-21 07:25:38

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Earthquake info - Manual location
Event - ID :250719112424
Magnitude (ML) :-0.1 +/- 0.1
Origin Time :2025-07-19 11:24:50.664 (UTC)
Location : Latitude: 44.247 N, Longitude: 7.165 E
Area :Alpi Marittime
Depth (km) :4.67
Distances (km) : 7.0 --- Vinadio
8.6 --- Aisone
12.5 --- Sambuco
13.0 --- Demonte
15.1 --- Pietraporzio
18.5 --- Castelmagno
18.5 --- Entracque
18.7 --- Valdieri
19.5 --- Valloriate
19.6 --- Moiola
21.3 --- Pradleves
21.6 --- Gaiola
21.9 --- Rittana
22.0 --- Monterosso Grana
23.2 --- Roaschia
24.3 --- Canosio
24.3 --- Roccasparvera
24.3 --- Marmora
24.6 --- Argentera
25.1 --- Valgrana

Quality location estimate: Erh: 0.5 km, Erz: 0.4 km, Nf: 16, Gap: 137 °, Rms: 0.08


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.
VINDIV2025-07-19 11:24:52.8960.02000.061.402025-07-19 11:24:54.2660.0400-0.021.548.4
ISOFR2025-07-19 11:24:53.3200.00700.011.652025-07-19 11:24:54.5010.0942-0.600.1012.8
STVGU2025-07-19 11:24:53.6000.00800.120.902025-07-19 11:24:55.3500.0441-0.011.5614.0
ENRGU2025-07-19 11:24:54.8500.0110-0.021.602025-07-19 11:24:57.6000.0621-0.120.9321.1
PZZGU2025-07-19 11:24:56.7890.0200-0.031.512025-07-19 11:25:00.6300.0832-0.490.1529.8
SURFFR2025-07-19 11:24:58.1600.02010.071.312025-07-19 11:25:03.1800.1163-0.110.9138.5
GBOSGU2025-07-19 11:25:00.3010.0200-0.180.622025-07-19 11:25:07.1720.04000.100.9154.0
BHBGU2025-07-19 11:25:03.1220.10040.780.002025-07-19 11:25:10.3720.04000.040.9266.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
ISO FRHH-0.213.66e-212.8233
STV GUHH-0.192.23e-214.091
ENR GUHH0.073.94e-221.195
PZZ GUHH0.112.75e-229.8352


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.
(°)
ISO FRHHZ5.7685e-67.8013e-73.5831e-71.4585e-78.9123e-81.0735e-51.8509e-61.4144e-72.3722e-812.8233
ISO FRHHN3.4167e-63.6814e-71.8030e-74.8832e-83.2152e-88.8186e-67.7766e-75.1904e-89.6348e-912.8233
ISO FRHHE4.7887e-68.4192e-72.7360e-78.5225e-83.9535e-89.6112e-61.3200e-67.8062e-81.7945e-812.8233
STV GUHHZ9.0118e-67.8265e-72.1353e-76.9293e-84.2116e-84.4937e-69.6696e-76.9825e-81.3032e-814.091
STV GUHHN4.0453e-65.7451e-71.5660e-75.0420e-82.9969e-86.8984e-66.3423e-75.4441e-81.1885e-814.091
STV GUHHE3.2392e-63.8194e-71.1741e-74.0947e-82.1055e-83.8128e-65.3410e-72.8798e-85.1552e-914.091
ENR GUHHZ5.3183e-65.3684e-71.9649e-75.8420e-83.4596e-87.4702e-68.7221e-74.6289e-81.2329e-821.195
ENR GUHHN1.5317e-51.3583e-62.6723e-79.9981e-85.6540e-81.2097e-51.2798e-61.0226e-72.2940e-821.195
ENR GUHHE9.7034e-69.3762e-72.0286e-76.6769e-83.9052e-81.0360e-57.0437e-79.1792e-81.8697e-821.195
PZZ GUHHZ1.4512e-62.9083e-71.7813e-74.2888e-82.3270e-83.8727e-68.4548e-73.4324e-86.3649e-929.8352
PZZ GUHHN1.7425e-63.5032e-72.2396e-77.2895e-83.4760e-84.6679e-68.0895e-74.5433e-88.9917e-929.8352
PZZ GUHHE1.7535e-63.2532e-72.4519e-77.2908e-83.4360e-84.3728e-61.1988e-64.7133e-88.8011e-929.8352
GBOS GUHHZ2.9032e-75.5517e-83.1338e-81.2248e-87.2947e-98.5326e-78.4635e-81.1006e-81.4574e-954.090
GBOS GUHHN3.7892e-76.2285e-84.7922e-82.7088e-81.2175e-88.8273e-72.1381e-71.7692e-81.9005e-954.090
GBOS GUHHE2.6384e-74.6695e-83.1422e-81.2325e-86.9529e-97.3073e-71.4105e-78.9348e-91.2693e-954.090
BHB GUHHZ5.4214e-77.5992e-83.1922e-82.0050e-82.4686e-81.3907e-61.2247e-75.6142e-82.1299e-966.07
BHB GUHHN3.7368e-76.6342e-83.6212e-82.8489e-85.3558e-88.4865e-71.7435e-71.2497e-74.5179e-966.07
BHB GUHHE4.6831e-77.3977e-83.9228e-83.3406e-85.7722e-81.1202e-62.1577e-71.3474e-76.0681e-966.07
*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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