MANUAL Location - Area: Riviera di ponente , magnitude (ML): 0.2
2025-08-14 08:40:55 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-14 19:14:44

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Earthquake info - Manual location
Event - ID :250814083952
Magnitude (ML) :0.2 +/- 0.2
Origin Time :2025-08-14 08:40:55.975 (UTC)
Location : Latitude: 43.809 N, Longitude: 7.403 E
Area :Riviera di ponente
Depth (km) :11.49
Distances (km) : 12.1 --- Olivetta San Michele
14.0 --- Airole
16.6 --- Ventimiglia
18.0 --- Camporosso
18.3 --- Dolceacqua
18.4 --- Rocchetta Nervina
19.1 --- Vallecrosia
19.8 --- San Biagio della Cima
20.2 --- Soldano
20.6 --- Isolabona
20.9 --- Bordighera
21.1 --- Vallebona
22.0 --- Apricale
22.2 --- Perinaldo
23.4 --- Seborga
25.1 --- Pigna
25.2 --- Ospedaletti
25.6 --- Castel Vittorio
27.6 --- Baiardo
29.8 --- San Remo

Quality location estimate: Erh: 1.4 km, Erz: 0.9 km, Nf: 16, Gap: 193 °, Rms: 0.26


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.
ESCAFR2025-08-14 08:40:57.7800.0030-0.960.002025-08-14 08:40:58.3900.0170-2.360.0012.5
BURYGU2025-08-14 08:40:59.8100.00800.022.292025-08-14 08:41:02.5700.0481-0.012.2117.1
TURFFR2025-08-14 08:41:00.7100.0110-0.012.402025-08-14 08:41:04.1990.0792-0.061.9221.8
MVIFFR2025-08-14 08:41:02.2310.02000.880.512025-08-14 08:41:05.2780.0400-0.071.9425.1
SAOFFR2025-08-14 08:41:01.4230.0200-0.250.552025-08-14 08:41:05.9440.04000.081.6526.2
IMIGU2025-08-14 08:41:04.0140.02000.280.272025-08-14 08:41:10.6840.04001.270.0442.7
MGROGU2025-08-14 08:41:03.9060.0200-0.540.042025-08-14 08:41:10.5460.0400-0.151.4643.6
ENRGU2025-08-14 08:41:05.7610.02000.900.532025-08-14 08:41:11.6330.04000.560.1948.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
BURY GUHH0.225.86e-217.1103
TURF FRHH0.193.54e-221.8357
SAOF FRHH0.011.65e-226.231
IMI GUHH0.241.48e-242.774
MGRO GUHH0.087.33e-343.651
ENR GUHH0.522.24e-248.51


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 FRHHZ7.7560e-51.1442e-58.1852e-62.7880e-61.8309e-69.5007e-55.0034e-52.6555e-63.1662e-712.5317
ESCA FRHHN1.8226e-42.9142e-51.8564e-56.8980e-63.0047e-63.3399e-41.0780e-44.3779e-66.7050e-712.5317
ESCA FRHHE1.1653e-41.6848e-51.4297e-53.8083e-62.1557e-61.9860e-41.0678e-42.8552e-64.5721e-712.5317
BURY GUHHZ3.2970e-68.2268e-74.8425e-71.6324e-78.0216e-87.8433e-64.0746e-61.0991e-71.9583e-817.1103
BURY GUHHN2.6606e-65.8461e-74.5691e-71.9302e-79.4189e-86.5035e-62.8787e-61.3646e-71.7904e-817.1103
BURY GUHHE3.4170e-66.8044e-74.8908e-71.4953e-77.0327e-87.2135e-63.3094e-69.5136e-81.6041e-817.1103
TURF FRHHZ1.0316e-62.1959e-72.0567e-71.0386e-75.5498e-83.1222e-61.2480e-67.2532e-85.7710e-921.8357
TURF FRHHN1.6235e-63.6444e-73.6259e-71.3716e-78.1113e-83.6191e-62.7388e-61.0465e-71.0269e-821.8357
TURF FRHHE1.2416e-63.3010e-73.0360e-71.3008e-75.0779e-82.6573e-61.4579e-66.2968e-89.0016e-921.8357
SAOF FRHHZ3.6673e-79.4008e-81.1458e-75.8014e-81.9483e-88.2815e-71.0822e-62.6288e-83.1269e-926.231
SAOF FRHHN5.1042e-71.5134e-71.3900e-78.1484e-84.7428e-81.0229e-61.3082e-67.3278e-85.1136e-926.231
SAOF FRHHE3.9342e-71.0069e-78.7217e-87.4118e-85.9149e-81.0131e-65.0278e-71.1245e-73.9019e-926.231
IMI GUHHZ4.9803e-78.6987e-86.2677e-84.2870e-82.1021e-88.5570e-74.0535e-72.5635e-82.1868e-942.774
IMI GUHHN1.8985e-61.6864e-71.2313e-76.5075e-83.8177e-81.5156e-61.1147e-65.0036e-85.2240e-942.774
IMI GUHHE6.4223e-71.2635e-78.9642e-84.8381e-82.8789e-81.1125e-67.0965e-73.8532e-83.7184e-942.774
MGRO GUHHZ1.6499e-73.2113e-83.5456e-82.7146e-81.4291e-84.8404e-72.4373e-72.1095e-81.4912e-943.651
MGRO GUHHN2.4373e-75.9337e-86.3557e-84.2331e-82.3741e-85.8336e-73.7702e-73.5227e-82.2386e-943.651
MGRO GUHHE2.8246e-75.6526e-85.3261e-83.6023e-81.8020e-88.4361e-72.9926e-72.5370e-81.7248e-943.651
ENR GUHHZ5.1954e-71.8309e-71.5407e-76.8275e-83.1433e-81.8670e-61.3535e-64.3659e-84.9210e-948.51
ENR GUHHN1.3998e-62.7730e-72.3658e-79.1943e-85.8933e-84.1791e-61.5933e-61.2151e-77.2061e-948.51
ENR GUHHE1.3621e-62.4552e-72.0460e-76.6184e-82.7780e-83.4213e-61.4495e-63.6420e-86.1930e-948.51
*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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