MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.1
2025-07-13 03:36:26 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-14 07:38:17

20 km
Lat : Lon
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Earthquake info - Manual location
Event - ID :250713033539
Magnitude (ML) :0.1 +/- 0.2
Origin Time :2025-07-13 03:36:26.833 (UTC)
Location : Latitude: 44.066 N, Longitude: 7.785 E
Area :Alpi Marittime
Depth (km) :5.02
Distances (km) : 2.0 --- Mendatica
2.5 --- Montegrosso Pian Latte
3.5 --- Briga Alta
3.9 --- Cosio di Arroscia
6.6 --- Pornassio
8.2 --- Triora
8.3 --- Molini di Triora
8.5 --- Rezzo
10.5 --- Armo
10.5 --- Pieve di Teco
13.3 --- Carpasio
14.2 --- Vessalico
14.2 --- Aurigo
14.2 --- Ormea
14.7 --- Caprauna
15.6 --- Borghetto d Arroscia
15.9 --- Montalto Ligure
16.0 --- Caravonica
16.1 --- Borgomaro
16.3 --- Cesio

Quality location estimate: Erh: 0.9 km, Erz: 1.1 km, Nf: 22, Gap: 60 °, Rms: 0.35


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.
MGROGU2025-07-13 03:36:29.0900.08030.371.022025-07-13 03:36:30.1310.0400-0.041.377.4
PVTIT2025-07-13 03:36:30.0900.02000.481.262025-07-13 03:36:31.7830.04000.041.3712.5
MLIGIV2025-07-13 03:36:30.4440.02000.551.072025-07-13 03:36:32.2970.04000.041.3512.9
GBOSGU2025-07-13 03:36:31.5710.02000.441.172025-07-13 03:36:34.0900.04000.011.3720.9
BIGNGU2025-07-13 03:36:31.7200.12050.200.962025-07-13 03:36:35.2840.04000.300.8422.9
ROROGU2025-07-13 03:36:32.1160.02000.561.042025-07-13 03:36:34.8980.0400-0.021.3323.6
TURFFR2025-07-13 03:36:33.5870.0803-0.110.972025-07-13 03:36:39.0300.04000.471.1233.4
ENRGU2025-07-13 03:36:32.8390.0200-0.580.302025-07-13 03:36:38.6320.04000.630.6635.0
STVGU2025-07-13 03:36:34.5680.0200-0.071.162025-07-13 03:36:39.9730.0400-0.041.1042.1
PZZGU2025-07-13 03:36:40.2280.02000.270.962025-07-13 03:36:49.4930.04000.391.0172.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MGRO GUHH0.323.20e-17.4145
PVT ITHN0.066.98e-212.5104
GBOS GUHH0.051.41e-220.912
BIGN GUEH0.062.39e-222.9190
RORO GUHH-0.091.59e-223.677
TURF FRHH-0.186.71e-333.4252
ENR GUHH0.383.06e-235.0302
STV GUHH0.135.85e-342.1299
PZZ GUHH0.215.68e-372.7313


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 GUHHZ1.7905e-51.7405e-66.6093e-71.6848e-79.2814e-82.9513e-52.4987e-61.5354e-73.8459e-87.4145
MGRO GUHHN3.9939e-54.0398e-61.3448e-64.6052e-72.8750e-77.3061e-54.7182e-64.8948e-78.7027e-87.4145
MGRO GUHHE4.6677e-56.2039e-62.0308e-66.5809e-73.5154e-78.8560e-58.6751e-66.0653e-71.4136e-77.4145
PVT ITHNZ1.0887e-51.2542e-65.2343e-72.8270e-71.4814e-71.2359e-53.1396e-62.0028e-72.3337e-812.5104
PVT ITHNN1.0721e-51.4085e-67.3802e-72.7735e-71.4746e-72.5255e-52.6853e-62.1247e-73.3190e-812.5104
PVT ITHNE2.2154e-52.2749e-65.2533e-72.8135e-71.3587e-72.6118e-51.9509e-61.7955e-73.3606e-812.5104
GBOS GUHHZ1.7843e-62.7000e-79.4318e-83.2985e-81.8903e-82.4006e-63.8061e-72.9089e-85.7342e-920.912
GBOS GUHHN1.2980e-61.5354e-78.0330e-82.5722e-81.3803e-82.3834e-63.1809e-72.0185e-83.3183e-920.912
GBOS GUHHE1.4605e-62.9583e-71.1048e-73.4799e-82.0308e-83.5560e-64.2880e-73.4904e-85.5442e-920.912
BIGN GUEHZ1.6492e-62.4365e-79.5191e-83.8159e-82.4704e-84.3829e-64.4263e-73.7763e-85.7122e-922.9190
BIGN GUEHN4.3504e-63.8474e-71.7081e-77.6940e-89.3667e-85.1824e-65.7441e-71.7735e-71.3701e-822.9190
BIGN GUEHE3.2112e-62.7580e-71.0685e-73.4944e-81.9834e-85.2506e-63.7392e-73.5425e-85.8833e-922.9190
RORO GUHHZ1.6475e-61.8577e-71.0566e-72.8520e-81.5607e-84.5558e-66.1878e-72.3085e-84.0470e-923.677
RORO GUHHN2.0538e-63.1249e-71.4502e-73.6473e-81.8641e-85.3201e-64.6697e-72.9565e-86.5437e-923.677
RORO GUHHE2.0718e-62.7260e-71.4424e-73.4728e-82.0733e-84.9409e-66.8011e-72.9925e-86.2998e-923.677
TURF FRHHZ3.9362e-75.5277e-83.2550e-81.4647e-81.0783e-87.3025e-71.9419e-72.0217e-81.4604e-933.4252
TURF FRHHN6.0362e-71.0022e-75.5948e-82.1058e-81.6594e-81.3211e-63.0867e-72.6073e-82.1571e-933.4252
TURF FRHHE5.9139e-78.4432e-84.4144e-81.7537e-81.4291e-81.6627e-62.3819e-72.1178e-82.0399e-933.4252
ENR GUHHZ3.0445e-63.7528e-79.8077e-82.8549e-81.9521e-84.7624e-63.8744e-73.5092e-87.4049e-935.0302
ENR GUHHN1.1606e-51.0179e-61.9738e-76.3975e-83.3430e-81.1782e-57.4544e-77.3972e-82.1650e-835.0302
ENR GUHHE1.0791e-59.4785e-71.3515e-74.4763e-82.6098e-86.0427e-66.4915e-75.9735e-81.5841e-835.0302
STV GUHHZ9.9891e-71.0661e-74.2249e-81.1606e-88.1315e-91.7188e-61.7799e-71.6138e-82.3196e-942.1299
STV GUHHN1.1913e-61.3354e-74.5951e-81.4394e-81.0783e-82.3366e-61.4401e-72.0337e-82.5969e-942.1299
STV GUHHE1.6286e-61.6064e-74.3485e-81.2822e-88.8918e-92.1357e-61.8643e-71.4077e-83.4901e-942.1299
PZZ GUHHZ3.9021e-77.2417e-84.7405e-82.4694e-82.6877e-88.6342e-72.2052e-74.2519e-85.6216e-972.7313
PZZ GUHHN5.1271e-77.5043e-84.9248e-81.7976e-81.3751e-81.3102e-62.5065e-72.6774e-81.9324e-972.7313
PZZ GUHHE4.7332e-79.2147e-86.2979e-81.7766e-81.2613e-81.1654e-62.7508e-72.2450e-82.3047e-972.7313
*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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