MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.8
2025-05-07 07:40:50 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-05-07 07:53:31

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Earthquake info - Manual location
Event - ID :250507074022
Magnitude (ML) :0.8 +/- 0.2
Origin Time :2025-05-07 07:40:50.448 (UTC)
Location : Latitude: 44.486 N, Longitude: 7.267 E
Area :Alpi Cozie
Depth (km) :11.02
Distances (km) : 1.0 --- San Damiano Macra
1.8 --- Cartignano
6.0 --- Roccabruna
6.9 --- Celle di Macra
7.2 --- Macra
7.4 --- Pradleves
7.9 --- Dronero
9.0 --- Valmala
9.0 --- Villar San Costanzo
9.5 --- Castelmagno
9.5 --- Melle
9.6 --- Monterosso Grana
9.6 --- Frassino
10.2 --- Montemale di Cuneo
11.4 --- Stroppo
12.0 --- Sampeyre
12.0 --- Brossasco
12.1 --- Valgrana
13.3 --- Venasca
14.0 --- Marmora

Quality location estimate: Erh: 0.9 km, Erz: 0.8 km, Nf: 32, Gap: 86 °, Rms: 0.30


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.
PZZGU2025-05-07 07:40:53.8640.0130-0.001.552025-05-07 07:40:56.2700.0561-0.041.4117.4
VINDIV2025-05-07 07:40:54.6670.0200-0.311.352025-05-07 07:40:57.7150.0400-0.431.2323.6
STVGU2025-05-07 07:40:55.8820.02710.031.442025-05-07 07:40:59.2220.0942-0.381.2629.7
ENRGU2025-05-07 07:40:56.4700.02910.021.442025-05-07 07:41:00.4220.1093-0.191.3233.3
SURFFR2025-05-07 07:40:57.5870.02000.021.402025-05-07 07:41:01.7500.1123-1.010.3237.7
ISOFR2025-05-07 07:40:58.0450.02000.380.142025-05-07 07:41:02.4510.1193-0.121.3039.6
BHBGU2025-05-07 07:40:57.2070.0200-0.351.382025-05-07 07:41:01.9070.0400-0.510.9740.5
GBOSGU2025-05-07 07:41:00.0400.02000.071.122025-05-07 07:41:06.0040.1705-0.580.8554.3
TURFFR2025-05-07 07:41:01.0880.0200-0.031.342025-05-07 07:41:07.8430.1303-0.910.4158.7
RRLGU2025-05-07 07:41:01.1800.0200-0.421.212025-05-07 07:41:08.8550.1885-0.650.7662.7
MGROGU2025-05-07 07:41:01.9000.0452-0.391.262025-05-07 07:41:09.6800.2056-1.120.3066.7
MVIFFR2025-05-07 07:41:02.5520.0602-0.111.312025-05-07 07:41:10.7840.2026-0.740.6567.1
ROROGU2025-05-07 07:41:03.4270.0200-0.241.312025-05-07 07:41:12.5020.3928-0.500.8576.8
IMIGU2025-05-07 07:41:04.1490.0200-0.401.222025-05-07 07:41:13.7000.2507-0.980.4382.0
CANOGU2025-05-07 07:41:05.1460.0200-0.151.312025-05-07 07:41:14.4100.4098-1.410.2183.9
PCPGU2025-05-07 07:41:08.1090.02000.480.162025-05-07 07:41:20.0400.31470.090.79102.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.712.98e-117.4281
STV GUHH0.917.01e-229.7170
ISO FRHH0.442.01e-239.6207
BHB GUHH0.371.48e-240.5360
GBOS GUHH1.012.02e-254.3121
TURF FRHH0.491.02e-258.7170
RRL GUHH0.699.39e-362.7322
MGRO GUHH0.791.54e-266.7139
RORO GUHH0.861.34e-276.8123
IMI GUHH0.961.93e-282.0142
CANO GUHH1.142.08e-283.9112
PCP GUHH0.989.92e-3102.286


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.
(°)
PZZ GUHHZ3.5126e-56.3019e-62.3342e-66.4697e-73.4284e-78.2988e-51.0485e-56.3696e-71.4453e-717.4281
PZZ GUHHN3.4860e-55.2144e-62.2045e-66.5304e-74.0821e-79.6719e-57.8741e-66.8303e-71.2560e-717.4281
PZZ GUHHE3.2327e-54.5468e-62.0041e-66.6147e-73.6505e-75.7170e-59.0634e-65.9812e-71.0780e-717.4281
STV GUHHZ9.5354e-61.3236e-63.8210e-71.5139e-77.9203e-81.7609e-51.4149e-61.1995e-72.5059e-829.7170
STV GUHHN1.1158e-51.2575e-63.9375e-71.2879e-76.1379e-81.3764e-51.4978e-61.1648e-72.6797e-829.7170
STV GUHHE1.4745e-51.5751e-65.5231e-71.1218e-77.2981e-84.6668e-51.6320e-61.4861e-73.4339e-829.7170
ENR GUHHZ3.9576e-53.7203e-61.2501e-65.9613e-72.7281e-73.1506e-56.9336e-64.2122e-76.9585e-833.3157
ENR GUHHN1.0453e-41.1175e-51.9667e-66.3308e-73.4994e-79.4849e-57.7806e-68.1583e-71.9618e-733.3157
ENR GUHHE1.1449e-41.0292e-53.1027e-68.7875e-75.0347e-79.5661e-51.4943e-59.8469e-72.1071e-733.3157
ISO FRHHZ1.8397e-62.9049e-71.1341e-73.5084e-82.1740e-83.9528e-65.4460e-73.5665e-86.4492e-939.6207
ISO FRHHN2.2901e-62.7017e-78.1059e-82.8041e-81.5978e-83.3367e-64.1939e-72.5928e-85.7465e-939.6207
ISO FRHHE2.1666e-64.2441e-71.5872e-74.4258e-82.4751e-84.1907e-66.4470e-73.9666e-89.1698e-939.6207
BHB GUHHZ3.5950e-63.9255e-71.2606e-74.4914e-82.1847e-87.1048e-65.0874e-74.8016e-88.1407e-940.5360
BHB GUHHN2.8105e-63.6651e-71.4590e-74.3358e-82.0177e-85.5910e-64.5759e-73.1958e-87.7062e-940.5360
BHB GUHHE3.4611e-63.6922e-71.1638e-74.7551e-83.0075e-85.4487e-63.8946e-76.3229e-88.5051e-940.5360
GBOS GUHHZ1.9470e-63.1652e-71.4790e-73.4916e-82.6529e-86.7007e-66.3263e-74.7354e-88.3697e-954.3121
GBOS GUHHN1.5435e-62.7264e-71.5979e-77.2381e-83.2104e-83.6805e-66.5986e-74.4636e-87.1297e-954.3121
GBOS GUHHE1.8608e-63.5634e-71.9660e-74.5939e-82.2940e-84.7455e-69.6497e-73.8235e-88.2614e-954.3121
TURF FRHHZ8.1100e-79.1892e-85.8298e-82.3329e-81.7021e-81.9130e-62.0252e-72.6771e-82.2860e-958.7170
TURF FRHHN1.0811e-61.3842e-77.2567e-84.4353e-85.4955e-82.3387e-62.7037e-77.1242e-81.5952e-858.7170
TURF FRHHE7.3647e-79.4459e-86.2130e-82.6476e-81.8359e-82.5387e-63.0599e-72.6899e-82.9610e-958.7170
RRL GUHHZ5.9460e-79.3142e-86.1964e-82.7675e-81.4921e-81.5745e-64.1184e-71.8387e-82.1621e-962.7322
RRL GUHHN6.4022e-71.1972e-71.0330e-73.8816e-81.6483e-82.9209e-66.0054e-72.1883e-83.0349e-962.7322
RRL GUHHE7.6740e-71.2926e-79.6684e-84.3314e-81.6351e-82.3644e-65.4797e-72.2760e-82.9510e-962.7322
MGRO GUHHZ6.6044e-71.0824e-79.3150e-86.6429e-82.4577e-81.1606e-64.3678e-73.4475e-83.2067e-966.7139
MGRO GUHHN7.7851e-71.7661e-71.1584e-77.0734e-83.0844e-82.3863e-63.5997e-73.5171e-84.3957e-966.7139
MGRO GUHHE7.3834e-71.5190e-71.3246e-76.6049e-83.2182e-81.7421e-67.5327e-74.9400e-84.8586e-966.7139
RORO GUHHZ9.0419e-71.5379e-77.7562e-82.1852e-81.3909e-82.6297e-62.5065e-71.9108e-83.1034e-976.8123
RORO GUHHN1.1293e-61.8148e-71.2105e-73.7650e-81.9867e-82.8582e-67.3628e-73.0303e-84.6078e-976.8123
RORO GUHHE1.2473e-62.2894e-71.1092e-73.0915e-81.7516e-83.9538e-65.4176e-72.7056e-84.8027e-976.8123
IMI GUHHZ9.8589e-71.6177e-79.5985e-84.0997e-82.5566e-81.7651e-67.7636e-73.4927e-84.0416e-982.0142
IMI GUHHN2.1030e-62.8959e-71.7602e-76.5927e-84.1828e-83.2369e-67.6156e-76.3596e-87.8602e-982.0142
IMI GUHHE1.5872e-62.7469e-71.2930e-74.6845e-82.8468e-83.6160e-65.6138e-73.5836e-87.1354e-982.0142
CANO GUHHZ1.1175e-61.8387e-78.2834e-83.3869e-83.0600e-82.2432e-63.4658e-75.3848e-84.7233e-983.9112
CANO GUHHN1.2538e-62.3829e-71.4962e-76.8351e-82.6786e-83.0803e-68.7254e-73.2917e-85.6112e-983.9112
CANO GUHHE1.9012e-63.0658e-71.9847e-78.5727e-84.7544e-86.0346e-69.9031e-77.2158e-89.1322e-983.9112
PCP GUHHZ1.1335e-61.2869e-76.5675e-84.9023e-82.1318e-81.2172e-63.2171e-72.9599e-83.0464e-9102.286
PCP GUHHN7.4614e-71.6357e-71.0937e-73.2561e-82.5148e-82.1360e-66.8397e-73.4364e-84.4032e-9102.286
PCP GUHHE8.8252e-71.4978e-79.6131e-83.7013e-82.1948e-82.0668e-64.2692e-73.6592e-84.2780e-9102.286
*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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