MANUAL Location - Area: Mar Ligure , magnitude (ML): 1.1
2025-08-12 16:46:35 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-13 14:19:09

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Earthquake info - Manual location
Event - ID :250812164618
Magnitude (ML) :1.1 +/- 0.2
Origin Time :2025-08-12 16:46:35.028 (UTC)
Location : Latitude: 43.470 N, Longitude: 8.216 E
Area :Mar Ligure
Depth (km) :37.27
Distances (km) : 47.3 --- San Lorenzo al Mare
48.3 --- Cipressa
48.4 --- Costarainera
48.5 --- Santo Stefano al Mare
48.8 --- Imperia
49.1 --- Riva Ligure
49.8 --- Terzorio
50.2 --- Diano Marina
50.4 --- Pompeiana
50.4 --- Civezza
51.5 --- Cervo
51.9 --- San Bartolomeo al Mare
52.1 --- Diano Castello
52.2 --- Castellaro
52.6 --- Taggia
52.7 --- San Remo
52.8 --- Diano San Pietro
53.1 --- Pietrabruna
53.3 --- Dolcedo
53.9 --- Andora

Quality location estimate: Erh: 3.1 km, Erz: 7.2 km, Nf: 26, Gap: 177 °, Rms: 0.20


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.
IMIGU2025-08-12 16:46:44.8000.0834-0.091.532025-08-12 16:46:52.2300.19250.151.1667.3
BIGNGU2025-08-12 16:46:45.3200.03710.061.612025-08-12 16:46:51.5400.4289-1.150.2270.4
BRDIT2025-08-12 16:46:45.3020.0200-0.530.372025-08-12 16:46:53.8350.04000.141.2872.8
PVTIT2025-08-12 16:46:46.5460.0200-0.171.332025-08-12 16:46:55.0100.0400-0.271.0477.4
MGROGU2025-08-12 16:46:47.2500.0432-0.121.472025-08-12 16:46:56.3600.2366-0.101.1581.5
ROROGU2025-08-12 16:46:47.1580.0200-0.011.642025-08-12 16:46:55.9990.23960.041.1681.6
SAOFFR2025-08-12 16:46:48.2800.07130.061.532025-08-12 16:46:58.1600.25470.270.8887.0
TURFFR2025-08-12 16:46:49.6600.05120.091.452025-08-12 16:46:59.6500.5019-0.610.6094.5
GBOSGU2025-08-12 16:46:48.9820.0200-0.930.182025-08-12 16:47:00.4300.4639-0.210.8498.6
MVIFFR2025-08-12 16:46:51.0640.0200-0.121.432025-08-12 16:47:02.4500.5759-0.770.50104.6
ENRGU2025-08-12 16:46:52.2000.06020.201.132025-08-12 16:47:04.4140.51490.080.78112.7
MORSIFR2025-08-12 16:46:49.8600.0522-2.220.012025-08-12 16:47:00.1520.0400-4.370.00115.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
IMI GUHH0.952.96e-267.3332
BIGN GUEH1.022.34e-270.4319
BRD ITHN1.496.39e-272.8321
MGRO GUHH1.142.20e-281.5333
RORO GUHH0.991.56e-281.6350
SAOF FRHH0.849.49e-387.0317
TURF FRHH0.554.10e-394.5311
GBOS GUHH1.291.03e-298.6341
ENR GUHH1.211.66e-2112.7323
MORSIFRHH0.966.42e-3115.4121


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.
(°)
IMI GUHHZ2.8405e-62.9699e-71.4418e-76.1509e-83.6801e-83.9123e-67.1433e-74.9633e-86.6467e-967.3332
IMI GUHHN5.6525e-65.5090e-72.6717e-71.1226e-74.9135e-81.0515e-59.9984e-77.2395e-81.2028e-867.3332
IMI GUHHE5.2356e-66.2731e-72.0562e-76.0454e-82.9770e-81.0597e-57.4203e-75.3356e-81.3566e-867.3332
BIGN GUEHZ3.0103e-62.7330e-71.0456e-73.7191e-82.3037e-82.9921e-64.8106e-73.4613e-85.4637e-970.4319
BIGN GUEHN5.7223e-67.1045e-72.2046e-77.0649e-83.4376e-81.6854e-55.9639e-75.4412e-81.2419e-870.4319
BIGN GUEHE6.0898e-66.0990e-71.8693e-76.4275e-82.8819e-89.0607e-68.0541e-74.5565e-81.2315e-870.4319
BRD ITHNZ2.8786e-63.4998e-72.9402e-71.9122e-71.1097e-75.5087e-61.2658e-61.5709e-79.9247e-972.8321
BRD ITHNN2.4730e-63.8887e-73.1989e-73.0642e-71.8608e-76.1207e-61.6733e-62.7989e-71.4400e-872.8321
BRD ITHNE2.3759e-64.6989e-73.5517e-74.3318e-73.1662e-77.2626e-61.5267e-64.2736e-74.4608e-872.8321
PVT ITHNZ6.0994e-67.0868e-73.6768e-72.4821e-71.1907e-76.9161e-61.8761e-61.4220e-71.6944e-877.4340
PVT ITHNN1.3182e-51.1374e-64.3003e-72.9762e-71.5216e-71.1718e-52.0214e-61.9776e-72.4246e-877.4340
PVT ITHNE1.2720e-51.2571e-64.7457e-72.9617e-71.9339e-71.9069e-52.0204e-62.7149e-72.8399e-877.4340
MGRO GUHHZ2.3243e-62.5809e-78.1391e-83.3127e-81.6475e-83.3178e-63.2197e-72.5568e-85.9655e-981.5333
MGRO GUHHN4.7938e-65.3516e-71.7441e-74.4252e-82.6062e-86.2260e-66.3873e-74.4691e-81.0634e-881.5333
MGRO GUHHE3.8278e-64.1857e-71.5223e-73.9613e-82.2981e-87.1633e-65.8249e-73.5864e-88.5871e-981.5333
RORO GUHHZ2.1761e-62.9386e-79.6198e-82.9072e-81.6309e-86.8360e-63.3404e-72.8113e-86.0830e-981.6350
RORO GUHHN2.2109e-63.6515e-71.1110e-73.0007e-82.0297e-86.7907e-64.0954e-73.8825e-87.9335e-981.6350
RORO GUHHE2.7080e-63.7491e-71.2609e-72.8463e-81.5964e-89.8236e-63.9690e-73.0116e-87.8569e-981.6350
SAOF FRHHZ8.7505e-79.8719e-85.3908e-82.8338e-81.4566e-81.2687e-63.1966e-72.4559e-82.1376e-987.0317
SAOF FRHHN1.2576e-61.3990e-76.7451e-82.5671e-81.2009e-83.3223e-64.0955e-71.6877e-82.5740e-987.0317
SAOF FRHHE1.3584e-61.7315e-79.0708e-83.5940e-81.8262e-82.4536e-63.4530e-72.4892e-83.8985e-987.0317
TURF FRHHZ6.8127e-77.3765e-83.4042e-81.5560e-89.0159e-98.8432e-71.8887e-71.5293e-81.7018e-994.5311
TURF FRHHN1.0653e-69.3609e-83.9186e-81.3368e-89.8410e-91.8637e-61.6541e-71.5754e-81.8698e-994.5311
TURF FRHHE8.9347e-78.2728e-83.4924e-81.5931e-88.7415e-91.1186e-61.5115e-71.3245e-81.6739e-994.5311
GBOS GUHHZ9.2608e-71.4907e-75.1854e-81.9137e-89.7910e-92.2815e-61.7105e-71.6351e-82.7874e-998.6341
GBOS GUHHN8.8106e-71.3569e-77.0510e-85.2276e-84.9165e-81.7686e-63.5719e-76.4210e-84.5439e-998.6341
GBOS GUHHE7.5504e-71.7323e-76.9613e-83.4485e-82.1448e-82.2143e-62.5109e-73.0418e-83.5900e-998.6341
ENR GUHHZ2.3706e-62.4026e-78.7877e-82.3668e-81.3023e-84.6795e-65.4511e-71.9553e-85.0305e-9112.7323
ENR GUHHN4.2867e-64.5091e-71.5471e-74.8292e-82.3210e-89.3166e-65.7815e-74.1238e-88.8903e-9112.7323
ENR GUHHE5.6867e-64.7309e-71.1809e-73.1906e-81.6468e-84.5971e-64.7368e-73.2394e-88.8284e-9112.7323
MORSIFRHHZ9.6017e-71.1460e-75.4099e-81.5821e-81.3400e-82.4060e-62.3446e-72.2007e-82.5848e-9115.4121
MORSIFRHHN1.4192e-61.6123e-75.0140e-81.4734e-81.1139e-82.4162e-61.8751e-71.9063e-83.0056e-9115.4121
MORSIFRHHE9.2407e-71.0396e-74.3085e-81.4212e-89.7816e-91.4744e-62.1431e-71.6375e-82.2047e-9115.4121
*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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