MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.6
2025-04-27 14:45:29 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-28 07:40:52

20 km
Lat : Lon
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Earthquake info - Manual location
Event - ID :250427144503
Magnitude (ML) :0.6 +/- 0.2
Origin Time :2025-04-27 14:45:29.777 (UTC)
Location : Latitude: 44.049 N, Longitude: 7.625 E
Area :Alpi Marittime
Depth (km) :5.35
Distances (km) : 10.6 --- Briga Alta
12.8 --- Triora
13.1 --- Pigna
13.5 --- Molini di Triora
13.8 --- Castel Vittorio
14.7 --- Mendatica
15.4 --- Montegrosso Pian Latte
16.8 --- Cosio di Arroscia
17.4 --- Limone Piemonte
17.5 --- Rocchetta Nervina
17.8 --- Baiardo
18.7 --- Apricale
18.8 --- Isolabona
19.6 --- Pornassio
20.0 --- Rezzo
20.3 --- Perinaldo
20.4 --- Airole
20.6 --- Olivetta San Michele
21.6 --- Carpasio
21.8 --- Dolceacqua

Quality location estimate: Erh: 0.8 km, Erz: 0.7 km, Nf: 28, Gap: 74 °, Rms: 0.21


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.
MLIGIV2025-04-27 14:45:32.1030.0200-0.290.912025-04-27 14:45:33.3060.0400-1.100.119.8
SAOFFR2025-04-27 14:45:32.7700.00700.560.052025-04-27 14:45:33.9890.0400-0.061.6210.7
MGROGU2025-04-27 14:45:33.2000.0080-0.400.822025-04-27 14:45:35.4400.0902-0.990.1216.2
TURFFR2025-04-27 14:45:34.7600.01200.350.302025-04-27 14:45:37.8100.07120.051.5421.1
ENRGU2025-04-27 14:45:35.0200.01400.081.432025-04-27 14:45:38.2750.0792-0.231.1526.8
IMIGU2025-04-27 14:45:35.1600.01400.051.712025-04-27 14:45:38.7590.1414-0.271.1127.1
GBOSGU2025-04-27 14:45:35.3050.0200-0.011.822025-04-27 14:45:39.0570.0400-0.031.6428.1
STVGU2025-04-27 14:45:35.9550.0200-0.021.792025-04-27 14:45:40.0100.0992-0.201.2433.0
MVIFFR2025-04-27 14:45:37.6490.0200-0.440.702025-04-27 14:45:44.1900.18950.151.0541.8
VINDIV2025-04-27 14:45:38.3370.0200-0.041.672025-04-27 14:45:43.7910.0400-0.380.8646.4
PZZGU2025-04-27 14:45:42.0310.02000.230.752025-04-27 14:45:49.7660.0400-0.350.9265.4
SURFFR2025-04-27 14:45:44.3900.04120.041.412025-04-27 14:45:54.1250.0400-0.291.0380.7
PCPGU2025-04-27 14:45:46.7340.02001.190.002025-04-27 14:45:58.7220.04002.170.0091.6
BHBGU2025-04-27 14:45:45.5400.04620.161.072025-04-27 14:45:56.0370.1002-0.021.1692.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
SAOF FRHH0.151.13e-110.7220
ENR GUHH0.588.00e-226.8321
IMI GUHH0.304.08e-227.1126
GBOS GUHH0.492.24e-228.139
STV GUHH0.764.01e-233.0313
PZZ GUHH0.692.15e-265.4322
PCP GUHH0.737.30e-391.653
BHB GUHH0.756.17e-392.2342


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 FRHHZ2.9289e-66.4758e-77.3916e-74.8606e-72.1224e-77.5770e-64.4782e-63.3515e-72.2104e-810.7220
SAOF FRHHN4.1952e-66.2861e-76.4750e-74.7976e-73.6602e-78.6038e-64.4099e-64.1935e-72.7080e-810.7220
SAOF FRHHE4.7132e-68.7270e-77.0000e-76.3933e-73.3818e-78.1426e-63.8059e-64.3231e-72.9665e-810.7220
MGRO GUHHZ1.3177e-63.0117e-73.4098e-71.7486e-77.4791e-83.6184e-62.4382e-69.8815e-81.0458e-816.293
MGRO GUHHN3.4836e-65.5379e-74.5814e-72.0152e-71.2317e-71.4814e-52.5271e-61.5492e-71.4341e-816.293
MGRO GUHHE1.6527e-64.7699e-73.5249e-71.6595e-78.2532e-85.6677e-61.4488e-61.1814e-71.4301e-816.293
TURF FRHHZ1.0484e-61.2376e-79.7651e-86.0086e-83.1393e-81.4275e-68.5318e-73.7761e-84.5150e-921.1246
TURF FRHHN1.9598e-62.5051e-71.7388e-77.4908e-84.6887e-84.9030e-61.2021e-65.9005e-87.6250e-921.1246
TURF FRHHE1.5437e-62.2584e-71.4121e-75.5662e-83.9275e-82.5526e-61.4853e-64.8802e-85.6293e-921.1246
ENR GUHHZ4.1780e-67.0669e-74.3610e-71.4561e-78.5817e-87.5403e-62.5684e-61.3648e-72.1533e-826.8321
ENR GUHHN1.1000e-51.3506e-66.8539e-72.5821e-71.3713e-71.4929e-52.9195e-62.1862e-73.3497e-826.8321
ENR GUHHE1.2772e-51.1686e-66.0101e-71.9286e-71.0043e-71.9281e-51.9856e-61.5432e-72.2740e-826.8321
IMI GUHHZ1.6525e-62.4391e-72.2027e-79.3340e-84.2776e-87.6412e-61.3222e-65.5475e-86.0700e-927.1126
IMI GUHHN2.7020e-65.8002e-73.9420e-71.5794e-77.2103e-87.1205e-61.4747e-61.0160e-71.5787e-827.1126
IMI GUHHE1.9146e-63.8361e-72.3299e-78.6901e-85.4994e-86.7022e-61.0264e-67.2089e-89.0058e-927.1126
GBOS GUHHZ7.9759e-71.6145e-71.1927e-75.5312e-83.1721e-82.4152e-65.5614e-73.5620e-84.8670e-928.139
GBOS GUHHN8.1000e-71.6657e-71.4484e-71.2164e-76.4773e-82.6360e-65.5357e-79.3997e-88.4458e-928.139
GBOS GUHHE1.0845e-61.5326e-71.4555e-78.5044e-83.0046e-82.3493e-65.6771e-73.8878e-85.0045e-928.139
STV GUHHZ2.0316e-64.5393e-72.6560e-79.0447e-84.5223e-84.4397e-61.6055e-66.8158e-89.9517e-933.0313
STV GUHHN2.2038e-63.7219e-71.5275e-74.4758e-82.3792e-85.2626e-66.9723e-73.6074e-88.2286e-933.0313
STV GUHHE2.4622e-65.1606e-73.1150e-71.0593e-75.9998e-86.4827e-62.0236e-69.3231e-81.3244e-833.0313
PZZ GUHHZ7.1741e-71.7455e-71.5730e-76.3975e-82.5268e-82.6553e-67.9110e-73.8862e-84.6996e-965.4322
PZZ GUHHN8.3951e-72.0817e-71.8768e-79.0851e-83.4435e-82.7042e-68.5667e-74.3781e-85.6813e-965.4322
PZZ GUHHE7.9116e-72.0453e-71.6229e-75.4934e-82.2130e-82.0129e-66.9344e-73.8867e-85.8997e-965.4322
PCP GUHHZ4.1658e-77.3717e-84.6724e-82.4906e-81.6520e-85.6567e-72.2317e-72.7492e-81.7296e-991.653
PCP GUHHN2.3211e-76.0214e-85.5616e-82.8299e-81.3897e-85.6666e-73.4376e-71.9204e-81.8291e-991.653
PCP GUHHE2.9527e-75.0839e-86.0590e-83.8988e-82.3545e-86.3609e-72.6463e-73.0432e-82.2372e-991.653
BHB GUHHZ5.3224e-76.7170e-84.2542e-81.7644e-81.7407e-81.6739e-61.7589e-74.0862e-82.1844e-992.2342
BHB GUHHN4.5259e-79.1831e-85.3255e-82.1075e-81.4577e-81.1977e-63.0774e-72.9717e-81.9421e-992.2342
BHB GUHHE3.8045e-77.7801e-86.3358e-82.8425e-81.7119e-81.3791e-62.4247e-73.6005e-82.1069e-992.2342
*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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