MANUAL Location - Area: Alpi Graie , magnitude (ML): 0.9
2025-09-13 18:59:44 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-15 08:09:32

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Earthquake info - Manual location
Event - ID :250913185921
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2025-09-13 18:59:44.883 (UTC)
Location : Latitude: 45.436 N, Longitude: 7.750 E
Area :Alpi Graie
Depth (km) :22.55
Distances (km) : 0.8 --- Vidracco
1.4 --- Issiglio
1.7 --- Vistrorio
2.0 --- Strambinello
2.7 --- Baldissero Canavese
2.7 --- Quagliuzzo
2.7 --- Lugnacco
2.9 --- Pecco
3.2 --- Parella
3.6 --- Alice Superiore
3.8 --- Rueglio
3.9 --- Colleretto Giacosa
4.2 --- Castelnuovo Nigra
4.8 --- Torre Canavese
4.8 --- Cintano
4.8 --- Loranze
5.4 --- Bairo
5.7 --- Colleretto Castelnuovo
6.2 --- Trausella
6.5 --- Castellamonte

Quality location estimate: Erh: 1.6 km, Erz: 1.4 km, Nf: 28, Gap: 169 °, 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.
CANIGU2025-09-13 18:59:49.4190.02000.450.632025-09-13 18:59:51.7430.04000.021.8023.8
CIROGU2025-09-13 18:59:50.9540.0170-0.031.792025-09-13 18:59:54.6500.1003-0.420.6534.2
LATOIV2025-09-13 18:59:51.3270.02000.220.982025-09-13 18:59:55.2660.0400-0.031.6835.3
OROIV2025-09-13 18:59:51.1570.06020.051.722025-09-13 18:59:54.7500.1083-0.660.3436.5
LSDGU2025-09-13 18:59:54.5280.02000.330.892025-09-13 19:00:00.4100.1665-0.091.3654.1
RSPGU2025-09-13 18:59:53.9600.03210.021.752025-09-13 19:00:00.0600.1785-0.261.0855.0
SATIGU2025-09-13 18:59:53.6620.0200-0.970.262025-09-13 19:00:00.0240.1625-1.450.2555.9
REMYGU2025-09-13 18:59:57.0800.03610.400.802025-09-13 19:00:04.7420.04000.051.4768.9
MRGEIV2025-09-13 18:59:57.2450.02000.470.622025-09-13 19:00:04.8900.10020.151.3469.5
MMKCH2025-09-13 18:59:57.2920.02000.031.662025-09-13 19:00:04.7470.3517-1.080.3974.6
BHBGU2025-09-13 18:59:57.4900.0401-0.091.512025-09-13 19:00:05.3620.6009-1.250.3780.3
DIXCH2025-09-13 18:59:58.2560.0200-0.251.032025-09-13 19:00:06.7920.1002-1.330.3080.5
RRLGU2025-09-13 19:00:01.0790.02000.121.482025-09-13 19:00:11.8820.0400-0.470.7497.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
CANI GUHH0.931.64e-123.8270
LSD GUHH0.681.86e-254.1273
RSP GUHH0.812.60e-255.0230
SATI GUHH1.132.83e-255.911
REMY GUHH0.619.44e-368.9314
MRGE IVHH0.971.80e-269.5305
MMK CHHH0.969.50e-374.614
BHB GUHH0.768.66e-380.3210
DIX CHHH1.263.04e-280.5340
RRL GUHH0.582.69e-397.7233


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.
(°)
CANI GUHHZ7.9008e-56.6098e-65.9631e-72.2430e-71.2710e-74.4969e-52.4793e-63.6025e-71.0765e-723.8270
CANI GUHHN8.0943e-57.4057e-68.9032e-72.9337e-71.5866e-75.9206e-53.6452e-64.1660e-71.3067e-723.8270
CANI GUHHE1.0365e-47.9427e-68.4101e-72.1654e-71.3795e-75.4258e-52.5156e-64.2036e-71.2057e-723.8270
CIRO GUHHZ3.3906e-52.6540e-63.8598e-71.0813e-76.3550e-81.6573e-51.4447e-61.4391e-73.2571e-834.2323
CIRO GUHHN3.0025e-53.6015e-65.8150e-71.9472e-71.3583e-71.8423e-51.9446e-62.5203e-76.2309e-834.2323
CIRO GUHHE2.8538e-52.7335e-65.1178e-71.1788e-77.8154e-82.6722e-51.8891e-61.8631e-75.0857e-834.2323
ORO IVEHZ1.3055e-51.3750e-65.6123e-71.9696e-77.2050e-82.5095e-51.8938e-61.2010e-73.2041e-836.540
ORO IVEHN2.4056e-54.1131e-61.3000e-63.0561e-71.8859e-76.7631e-54.3951e-63.4487e-78.4002e-836.540
ORO IVEHE2.9585e-52.5721e-68.7901e-72.8473e-71.3878e-74.0590e-52.9603e-62.3148e-75.5686e-836.540
LSD GUHHZ3.6869e-63.0434e-71.0810e-73.2973e-81.8701e-87.2962e-63.1890e-72.9170e-85.9201e-954.1273
LSD GUHHN4.3346e-64.7638e-71.2478e-75.2171e-82.4986e-88.7231e-64.5267e-74.2263e-88.0940e-954.1273
LSD GUHHE6.0057e-65.3329e-71.2571e-72.8481e-81.7469e-89.2579e-64.0113e-73.9823e-89.4500e-954.1273
RSP GUHHZ2.2136e-63.3600e-71.4655e-73.4293e-82.1679e-85.9052e-64.5773e-74.1809e-87.6412e-955.0230
RSP GUHHN2.5614e-64.5361e-72.3422e-75.0282e-82.8051e-85.9193e-68.4959e-75.0620e-81.0722e-855.0230
RSP GUHHE3.3925e-64.2935e-72.1275e-74.6349e-82.6816e-87.2698e-66.6657e-74.6346e-89.4886e-955.0230
SATI GUHHZ3.2269e-63.2164e-79.2410e-83.9438e-81.9585e-85.2280e-65.7069e-73.5534e-86.6167e-955.911
SATI GUHHN7.4097e-67.4748e-72.4110e-77.4023e-84.5091e-88.8647e-69.0162e-77.4266e-81.4323e-855.911
SATI GUHHE7.4186e-66.7721e-72.1413e-77.9840e-88.4272e-81.1157e-57.6266e-71.3290e-71.9080e-855.911
REMY GUHHZ2.3078e-62.5765e-75.6561e-82.2226e-81.0581e-81.2968e-62.3281e-72.1295e-82.7596e-968.9314
REMY GUHHN1.8435e-61.9522e-77.2684e-83.7421e-81.8156e-82.6341e-63.6251e-72.3971e-83.5538e-968.9314
REMY GUHHE1.7267e-62.0395e-77.8970e-83.0196e-81.4349e-83.1225e-63.8550e-72.2194e-83.6404e-968.9314
MRGE IVHHZ1.8275e-61.8019e-76.0049e-82.1644e-81.0144e-82.4384e-63.1698e-71.5728e-83.5894e-969.5305
MRGE IVHHN4.5788e-64.3903e-79.8134e-84.8033e-82.7596e-85.4324e-64.3844e-74.3236e-88.1341e-969.5305
MRGE IVHHE3.7281e-63.7009e-77.4632e-83.7513e-81.8491e-83.4007e-63.1884e-72.8819e-86.8450e-969.5305
MMK CHHHZ1.1627e-61.4182e-75.9862e-81.9322e-81.0396e-81.9101e-62.8851e-71.8219e-83.5035e-974.614
MMK CHHHN1.6662e-61.6005e-79.1791e-82.4047e-81.1563e-84.3963e-64.5737e-72.0010e-84.2820e-974.614
MMK CHHHE2.1423e-61.9895e-76.9468e-82.2175e-81.0808e-83.5912e-62.9828e-71.7502e-84.4136e-974.614
BHB GUHHZ1.1899e-61.3732e-74.5548e-81.7304e-81.8498e-81.9337e-61.8113e-74.4459e-83.3727e-980.3210
BHB GUHHN7.8329e-71.0990e-75.6690e-82.0347e-81.3607e-82.1579e-61.9467e-72.8391e-82.5689e-980.3210
BHB GUHHE9.4590e-71.2007e-76.1714e-83.2224e-81.8380e-81.9412e-62.1277e-73.6940e-83.1958e-980.3210
DIX CHHHZ6.3174e-64.9912e-71.7868e-75.1075e-82.7788e-89.5902e-68.7530e-75.1017e-89.9490e-980.5340
DIX CHHHN5.2685e-65.2007e-72.4186e-77.9332e-83.8466e-88.9783e-61.3677e-66.0902e-81.2041e-880.5340
DIX CHHHE6.5326e-66.2611e-72.6731e-77.1174e-83.7966e-81.6071e-51.2668e-66.5734e-81.3118e-880.5340
RRL GUHHZ1.7223e-72.2696e-81.2822e-88.1369e-94.9571e-94.9220e-76.6865e-86.4866e-96.7245e-1097.7233
RRL GUHHN1.7971e-73.1507e-82.5661e-81.0014e-86.3313e-96.2183e-71.3878e-79.2475e-99.9736e-1097.7233
RRL GUHHE1.3521e-72.6949e-82.0279e-81.2283e-88.6813e-94.7863e-79.4697e-81.2220e-89.4310e-1097.7233
*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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