MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.5
2025-04-14 23:09:31 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-15 07:25:22

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Earthquake info - Manual location
Event - ID :250414230905
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2025-04-14 23:09:31.675 (UTC)
Location : Latitude: 43.963 N, Longitude: 7.631 E
Area :Alpi Marittime
Depth (km) :8.02
Distances (km) : 4.1 --- Pigna
5.1 --- Castel Vittorio
8.2 --- Rocchetta Nervina
9.3 --- Isolabona
9.3 --- Apricale
9.7 --- Baiardo
10.9 --- Perinaldo
11.3 --- Triora
11.8 --- Airole
11.9 --- Molini di Triora
12.3 --- Dolceacqua
13.0 --- Olivetta San Michele
14.5 --- Ceriana
14.9 --- Soldano
15.9 --- Seborga
16.0 --- San Biagio della Cima
16.3 --- Camporosso
16.4 --- Briga Alta
16.7 --- Vallebona
17.4 --- Montalto Ligure

Quality location estimate: Erh: 0.6 km, Erz: 0.7 km, Nf: 38, Gap: 58 °, 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.
MLIGIV2025-04-14 23:09:34.0540.0200-0.281.122025-04-14 23:09:35.3570.0400-1.000.099.5
SAOFFR2025-04-14 23:09:34.4100.00900.180.642025-04-14 23:09:35.5000.0330-0.650.5310.9
BRDIT2025-04-14 23:09:34.4260.0200-0.121.332025-04-14 23:09:36.1600.0400-0.520.5813.7
BIGNGU2025-04-14 23:09:35.0100.01100.031.482025-04-14 23:09:37.1450.0511-0.271.1616.2
MGROGU2025-04-14 23:09:35.8000.0140-0.141.272025-04-14 23:09:38.4600.0581-0.680.5219.3
TURFFR2025-04-14 23:09:36.2600.01100.111.042025-04-14 23:09:38.9900.0631-0.360.9820.8
SNRMIT2025-04-14 23:09:35.7920.0200-0.011.542025-04-14 23:09:38.6950.0400-0.111.4221.5
BURYGU2025-04-14 23:09:35.8290.0200-0.321.072025-04-14 23:09:38.5800.0661-0.770.4022.4
IMIGU2025-04-14 23:09:36.3000.01500.061.332025-04-14 23:09:39.3400.0701-0.271.1823.5
PVTIT2025-04-14 23:09:36.8610.0200-0.011.542025-04-14 23:09:40.0030.0400-0.720.4726.2
ESCAFR2025-04-14 23:09:37.0900.0130-0.001.532025-04-14 23:09:40.8200.0782-0.191.3226.7
ENRGU2025-04-14 23:09:38.3600.01900.041.402025-04-14 23:09:42.6290.1073-0.221.2635.4
GBOSGU2025-04-14 23:09:38.1490.0200-0.420.812025-04-14 23:09:43.2500.1113-0.011.3036.3
ROROGU2025-04-14 23:09:39.2000.02310.200.642025-04-14 23:09:44.0400.1203-0.151.3239.4
MVIFFR2025-04-14 23:09:39.7860.02000.200.652025-04-14 23:09:44.5100.2186-0.830.4039.9
STVGU2025-04-14 23:09:39.1350.0200-0.071.492025-04-14 23:09:43.8270.0400-0.470.8140.7
ISOFR2025-04-14 23:09:41.8100.02000.380.142025-04-14 23:09:47.9200.2126-0.241.1253.3
VINDIV2025-04-14 23:09:41.3690.0200-0.061.472025-04-14 23:09:47.4590.0400-0.520.7653.6
SURFFR2025-04-14 23:09:47.0520.0200-0.231.242025-04-14 23:09:57.4300.4018-0.610.6687.3


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
SAOF FRHH0.321.63e-110.9294
BRD ITHN0.602.07e-113.7133
BIGN GUEH0.631.64e-116.2140
MGRO GUHH0.204.47e-219.358
TURF FRHH0.497.67e-220.8274
SNRM ITHN0.548.02e-221.5141
BURY GUHH0.598.28e-222.4197
IMI GUHH0.285.01e-223.5105
PVT ITHN0.505.05e-226.270
ESCA FRHH0.162.25e-226.7235
ENR GUHH0.879.22e-235.4330
GBOS GUHH0.802.77e-236.328
RORO GUHH0.119.41e-339.464
STV GUHH0.391.15e-240.7322
ISO FRHH0.348.86e-353.3298


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.
(°)
SAOF FRHHZ2.2762e-52.0511e-67.6120e-72.9685e-71.4122e-72.2008e-54.7835e-62.0511e-74.3334e-810.9294
SAOF FRHHN4.3513e-54.9224e-69.8428e-74.0870e-72.4096e-74.8897e-54.3956e-64.8128e-71.0304e-710.9294
SAOF FRHHE5.9098e-55.4384e-68.2708e-72.8358e-71.6612e-74.3811e-53.3677e-63.9810e-71.1271e-710.9294
BRD ITHNZ1.9248e-51.5423e-67.5786e-72.7834e-71.2850e-72.6945e-53.2018e-61.8949e-73.0966e-813.7133
BRD ITHNN1.8491e-52.9692e-61.7916e-67.7550e-73.6454e-73.0062e-51.1021e-56.0164e-78.0569e-813.7133
BRD ITHNE1.6833e-52.7873e-61.7486e-65.1284e-72.6033e-73.3421e-56.3858e-64.5493e-76.3081e-813.7133
BIGN GUEHZ1.4151e-51.4072e-66.7940e-71.4575e-78.6762e-81.8403e-52.1817e-61.4302e-72.9623e-816.2140
BIGN GUEHN3.1305e-53.6709e-61.3750e-63.9097e-72.5584e-75.5981e-55.2140e-65.1139e-78.1727e-816.2140
BIGN GUEHE3.7449e-53.7428e-67.4440e-72.0956e-71.3752e-73.4017e-52.2280e-62.8986e-77.6050e-816.2140
MGRO GUHHZ1.0634e-51.0277e-61.7544e-74.6075e-82.9400e-84.9366e-65.6347e-74.8525e-87.4453e-919.358
MGRO GUHHN6.6765e-69.2924e-73.1618e-79.2430e-85.9641e-81.3309e-51.2367e-61.1378e-72.4418e-819.358
MGRO GUHHE6.9339e-68.1226e-73.6157e-71.0942e-75.1450e-87.7480e-61.1727e-67.4761e-81.6351e-819.358
TURF FRHHZ3.4107e-65.9474e-72.4165e-79.8699e-83.8702e-87.0488e-61.0875e-66.1558e-81.3112e-820.8274
TURF FRHHN7.3376e-61.0005e-63.8935e-71.5527e-77.3451e-81.1913e-51.6966e-61.1058e-71.7902e-820.8274
TURF FRHHE1.1295e-51.4221e-65.8315e-71.3391e-77.8860e-82.5024e-52.3262e-61.5005e-73.5506e-820.8274
SNRM ITHNZ5.0702e-67.7769e-74.5950e-73.3421e-71.8082e-79.8924e-61.6776e-62.5860e-71.6488e-821.5141
SNRM ITHNN7.9176e-68.9096e-77.1800e-73.6112e-72.3190e-71.8596e-53.6162e-63.1579e-72.6321e-821.5141
SNRM ITHNE7.8247e-61.0645e-66.7865e-73.7593e-71.9677e-72.0196e-53.1726e-62.4503e-72.6979e-821.5141
BURY GUHHZ8.4758e-66.7443e-73.9916e-71.7549e-79.4606e-81.1584e-52.5896e-61.1757e-71.6266e-822.4197
BURY GUHHN1.1925e-51.5145e-66.6882e-72.0507e-71.0403e-71.4367e-52.7005e-61.3309e-73.0757e-822.4197
BURY GUHHE1.1305e-51.6570e-65.8835e-72.3033e-79.4794e-82.2058e-52.6608e-61.5788e-73.8201e-822.4197
IMI GUHHZ2.3677e-63.7181e-72.0378e-79.2448e-84.5116e-86.9286e-61.1021e-66.2833e-88.7485e-923.5105
IMI GUHHN9.0032e-61.2435e-65.0716e-71.1270e-76.0771e-81.5101e-52.4819e-69.7973e-82.5780e-823.5105
IMI GUHHE5.6524e-68.9694e-73.8344e-71.2337e-77.2533e-81.0230e-51.7335e-61.0334e-71.7574e-823.5105
PVT ITHNZ5.9477e-64.6845e-73.6907e-72.9490e-71.6799e-75.0109e-62.0808e-62.4986e-71.7224e-826.270
PVT ITHNN7.6444e-66.7258e-73.7075e-72.6694e-71.5051e-75.0391e-61.4841e-62.3536e-71.8193e-826.270
PVT ITHNE8.7203e-67.3530e-73.4252e-72.6446e-71.4340e-76.4537e-61.7484e-61.8603e-71.7122e-826.270
ESCA FRHHZ2.4596e-62.4631e-71.0546e-76.4823e-87.7675e-82.5430e-65.4594e-79.5220e-81.6407e-826.7235
ESCA FRHHN3.4035e-65.2982e-71.8766e-74.9597e-83.1999e-86.4987e-66.9122e-76.1028e-89.5728e-926.7235
ESCA FRHHE2.6281e-62.9819e-71.5270e-74.2178e-82.1982e-87.7728e-66.2931e-73.6738e-87.5164e-926.7235
ENR GUHHZ9.6434e-68.1199e-71.4366e-74.9293e-82.9817e-87.7655e-65.9045e-76.6966e-81.4132e-835.4330
ENR GUHHN4.2338e-53.7488e-63.6744e-71.2664e-77.8784e-82.0893e-51.6221e-62.2613e-76.9442e-835.4330
ENR GUHHE4.5241e-53.6558e-63.1601e-71.2003e-78.6302e-82.0337e-51.5559e-62.3789e-76.5086e-835.4330
GBOS GUHHZ2.8241e-63.8142e-71.5785e-74.1985e-82.4541e-86.5726e-65.7168e-74.3211e-88.2240e-936.328
GBOS GUHHN2.8512e-63.0183e-71.0928e-73.4896e-81.8867e-86.8760e-64.3882e-72.9275e-86.1525e-936.328
GBOS GUHHE2.7800e-65.4812e-72.0143e-76.1216e-83.9417e-87.5881e-68.5369e-76.2499e-81.1014e-836.328
RORO GUHHZ4.4660e-64.8672e-77.9848e-82.2452e-81.6669e-83.8978e-63.2364e-72.9659e-85.3257e-939.464
RORO GUHHN2.0218e-61.9479e-78.7096e-82.7522e-81.8285e-83.3991e-62.7163e-72.7821e-84.0747e-939.464
RORO GUHHE2.8571e-62.9441e-77.2754e-82.0932e-81.4693e-82.8423e-63.0605e-72.4844e-83.8127e-939.464
STV GUHHZ1.6945e-62.1589e-77.5363e-82.7526e-81.9340e-82.7440e-63.5961e-73.3384e-84.1633e-940.7322
STV GUHHN2.9286e-62.7920e-78.9687e-83.1338e-81.6728e-82.9907e-64.8235e-72.2945e-85.4330e-940.7322
STV GUHHE3.7320e-63.4602e-77.7862e-82.0205e-81.3973e-84.1936e-62.6456e-72.4904e-86.1586e-940.7322
ISO FRHHZ3.5826e-74.8073e-82.9466e-89.6478e-99.2347e-91.0437e-61.4423e-71.3136e-81.4824e-953.3298
ISO FRHHN6.4752e-71.1862e-75.7933e-82.4120e-81.3766e-81.8795e-63.0448e-71.8236e-82.9375e-953.3298
ISO FRHHE4.6651e-75.5769e-83.2100e-81.3439e-81.0441e-86.8624e-71.4355e-71.4328e-81.4500e-953.3298
*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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