MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.7
2025-10-17 02:21:41 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-17 07:44:30

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Earthquake info - Manual location
Event - ID :251017022115
Magnitude (ML) :0.7 +/- 0.2
Origin Time :2025-10-17 02:21:41.653 (UTC)
Location : Latitude: 44.268 N, Longitude: 7.356 E
Area :Alpi Marittime
Depth (km) :15.71
Distances (km) : 3.5 --- Valdieri
4.5 --- Entracque
6.6 --- Moiola
7.2 --- Demonte
7.9 --- Roaschia
8.1 --- Valloriate
8.7 --- Gaiola
10.0 --- Rittana
10.7 --- Roccasparvera
11.3 --- Roccavione
12.0 --- Aisone
12.8 --- Borgo San Dalmazzo
12.8 --- Robilante
13.8 --- Vignolo
14.4 --- Vernante
14.7 --- Bernezzo
15.2 --- Vinadio
15.7 --- Cervasca
16.0 --- Monterosso Grana
16.2 --- Valgrana

Quality location estimate: Erh: 0.9 km, Erz: 0.6 km, Nf: 42, Gap: 76 °, Rms: 0.31


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.
STVGU2025-10-17 02:21:44.8200.01000.002.032025-10-17 02:21:46.7000.0471-0.301.0417.0
ENRGU2025-10-17 02:21:45.1400.01000.111.412025-10-17 02:21:47.3640.0541-0.011.9418.1
VINDIV2025-10-17 02:21:44.4320.0200-1.330.152025-10-17 02:21:46.7390.0400-1.830.1121.8
ISOFR2025-10-17 02:21:47.3300.01700.002.012025-10-17 02:21:50.6110.0902-0.580.3830.9
TURFFR2025-10-17 02:21:48.8800.02110.350.412025-10-17 02:21:53.3540.1063-0.081.6336.2
PZZGU2025-10-17 02:21:47.6200.0221-0.940.232025-10-17 02:21:51.8240.5889-1.630.2336.9
SAOFFR2025-10-17 02:21:49.2200.02210.310.532025-10-17 02:21:53.8100.1474-0.211.3238.6
GBOSGU2025-10-17 02:21:49.2000.02110.041.872025-10-17 02:21:54.5100.12530.230.9742.1
MLIGIV2025-10-17 02:21:49.6550.0200-0.251.212025-10-17 02:21:54.8960.0400-0.870.3043.5
MVIFFR2025-10-17 02:21:50.5180.02000.001.882025-10-17 02:21:56.2400.1384-0.700.4047.0
MGROGU2025-10-17 02:21:50.1900.0251-0.251.232025-10-17 02:21:55.9020.0400-0.750.3447.2
ESCAFR2025-10-17 02:21:51.1820.02000.151.242025-10-17 02:21:57.5740.1554-0.051.4551.2
PVTIT2025-10-17 02:21:51.3120.0200-0.051.832025-10-17 02:21:58.1780.0400-0.081.6054.2
BIGNGU2025-10-17 02:21:51.6930.0200-0.071.792025-10-17 02:21:58.6500.1655-0.171.3356.2
IMIGU2025-10-17 02:21:52.3900.05620.021.742025-10-17 02:21:59.9600.1805-0.021.3560.7
ROROGU2025-10-17 02:21:52.2730.0200-0.251.242025-10-17 02:21:59.8800.1835-0.171.2961.3
BHBGU2025-10-17 02:21:51.1300.0311-1.550.152025-10-17 02:21:57.5140.0400-2.920.0465.6
QLNOIV2025-10-17 02:21:55.5830.0200-0.171.492025-10-17 02:22:05.2860.0400-0.450.7880.7
RRLGU2025-10-17 02:21:55.4570.0200-1.410.202025-10-17 02:22:05.1800.0400-2.450.0687.2
RSPGU2025-10-17 02:21:55.8650.0200-2.020.102025-10-17 02:22:06.0630.0400-3.430.0299.6
PCPGU2025-10-17 02:21:58.6300.04920.051.522025-10-17 02:22:10.7340.04000.091.18100.6


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
STV GUHH0.942.09e-117.0224
ISO FRHH0.746.44e-230.9249
TURF FRHH0.653.84e-236.2175
PZZ GUHH0.615.78e-236.9325
SAOF FRHH0.371.82e-238.6153
GBOS GUHH0.802.07e-242.194
MGRO GUHH0.541.79e-247.2125
ESCA FRHH0.732.37e-251.2178
PVT ITHN1.084.69e-254.2119
BIGN GUEH0.933.03e-256.2145
IMI GUHH1.085.01e-260.7133
RORO GUHH0.671.39e-261.3107
BHB GUHH0.578.88e-365.6353
QLNO IVHH0.535.60e-380.785
RRL GUHH0.563.35e-387.2329
RSP GUHH0.614.41e-399.6356
PCP GUHH0.523.60e-3100.672


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.
(°)
STV GUHHZ2.5675e-52.0543e-65.4932e-71.3230e-77.4302e-81.6836e-52.0614e-61.4664e-73.6061e-817.0224
STV GUHHN2.6589e-52.5598e-68.0101e-72.9762e-71.8479e-73.1244e-53.2822e-63.1814e-75.4683e-817.0224
STV GUHHE5.8766e-55.7817e-61.2899e-64.1364e-72.7219e-76.3606e-54.3755e-65.6416e-71.2053e-717.0224
ENR GUHHZ2.3439e-42.3813e-52.4611e-68.7209e-75.6704e-71.8000e-49.4199e-61.3428e-63.8547e-718.1130
ENR GUHHN6.1412e-46.8173e-58.8398e-63.2980e-62.1074e-64.3854e-43.5997e-55.0185e-61.1896e-618.1130
ENR GUHHE9.0437e-46.8927e-56.4711e-62.3367e-61.5091e-65.4683e-43.2646e-53.6781e-61.0149e-618.1130
ISO FRHHZ7.8614e-67.7397e-72.6785e-79.1894e-84.6285e-86.8685e-61.2717e-67.0900e-81.5130e-830.9249
ISO FRHHN1.6631e-51.4709e-63.9843e-71.2736e-76.9767e-86.9897e-61.8530e-61.3416e-73.0956e-830.9249
ISO FRHHE1.4028e-51.2014e-62.3777e-76.9603e-83.7897e-81.2613e-51.1611e-68.1991e-82.2011e-830.9249
TURF FRHHZ2.6899e-63.9628e-71.3886e-73.5691e-82.2285e-83.4774e-65.6639e-73.4858e-85.7785e-936.2175
TURF FRHHN3.6882e-64.8495e-72.0323e-75.8731e-82.6797e-87.5631e-66.8393e-73.9564e-88.9532e-936.2175
TURF FRHHE2.8341e-65.6628e-73.2220e-79.8624e-85.1605e-86.2747e-61.9355e-67.7133e-81.2465e-836.2175
PZZ GUHHZ6.0653e-69.7351e-74.1254e-71.2583e-76.2488e-81.9677e-51.9946e-61.0353e-72.2062e-836.9325
PZZ GUHHN7.1632e-61.1929e-64.7166e-71.4715e-78.4743e-81.6582e-51.7951e-61.2783e-72.5878e-836.9325
PZZ GUHHE6.4103e-69.2472e-74.4410e-71.6389e-76.6640e-81.7591e-52.1848e-69.9594e-81.8074e-836.9325
SAOF FRHHZ2.2867e-62.7419e-71.9603e-77.3129e-83.5571e-84.5095e-68.9929e-74.5767e-86.6225e-938.6153
SAOF FRHHN2.7860e-63.2359e-71.3978e-75.1791e-82.4871e-84.4308e-68.3525e-73.3930e-86.6757e-938.6153
SAOF FRHHE2.5775e-63.5173e-71.6571e-75.7572e-83.0899e-86.0365e-64.6318e-75.7600e-89.4845e-938.6153
GBOS GUHHZ3.1408e-64.7312e-71.9668e-74.6027e-82.7609e-81.0672e-55.1199e-75.2234e-81.0795e-842.194
GBOS GUHHN2.0180e-62.3878e-71.4111e-74.6334e-81.9589e-84.5408e-64.9510e-73.1151e-85.7154e-942.194
GBOS GUHHE2.7087e-64.5425e-71.9488e-76.0975e-82.7963e-89.4410e-67.7314e-74.1837e-89.4527e-942.194
MGRO GUHHZ1.3899e-61.4437e-71.2699e-76.6488e-82.7037e-82.1912e-65.5554e-74.0385e-84.5004e-947.2125
MGRO GUHHN2.1693e-63.4214e-71.7002e-76.4466e-82.7320e-85.7366e-65.7713e-73.9290e-87.2059e-947.2125
MGRO GUHHE2.7711e-63.7810e-71.4981e-75.6608e-82.5127e-87.0947e-66.8584e-73.8689e-87.3312e-947.2125
ESCA FRHHZ2.4385e-63.2892e-71.5446e-74.9661e-82.0987e-83.5371e-67.8819e-73.1291e-86.3268e-951.2178
ESCA FRHHN4.5740e-65.1534e-71.8127e-75.1904e-82.6848e-85.9455e-65.4092e-75.3844e-81.2828e-851.2178
ESCA FRHHE2.9959e-64.2119e-72.3243e-75.5496e-83.0509e-86.7390e-61.0679e-64.9491e-89.1835e-951.2178
PVT ITHNZ4.2507e-64.6713e-73.5727e-72.2132e-71.4906e-76.7067e-61.8507e-62.0744e-71.5377e-854.2119
PVT ITHNN5.5034e-67.0010e-74.6809e-73.4457e-71.7167e-71.1623e-51.9493e-62.1158e-71.9012e-854.2119
PVT ITHNE6.6777e-66.0684e-73.4927e-72.6924e-71.3007e-76.3697e-61.8335e-61.5307e-71.5088e-854.2119
BIGN GUEHZ1.3439e-62.2671e-71.1432e-73.9976e-82.6327e-82.0421e-63.6486e-73.5473e-86.0661e-956.2145
BIGN GUEHN5.6502e-66.4687e-72.5767e-79.9295e-85.2600e-88.8853e-69.5918e-71.0942e-71.5855e-856.2145
BIGN GUEHE6.3062e-68.1004e-71.9080e-76.4279e-84.4395e-89.3357e-67.7133e-79.6632e-81.9290e-856.2145
IMI GUHHZ2.1020e-63.1507e-71.7753e-79.4841e-87.6413e-87.7790e-66.8210e-71.0770e-79.1257e-960.7133
IMI GUHHN9.4957e-61.2036e-64.6717e-71.4965e-76.7823e-81.9063e-51.6128e-61.2002e-72.6437e-860.7133
IMI GUHHE4.1574e-66.1731e-73.0547e-79.1520e-85.1943e-89.0564e-61.2665e-68.4270e-81.5601e-860.7133
RORO GUHHZ1.3463e-61.6844e-78.4426e-82.4461e-81.6204e-83.5833e-64.0422e-72.4960e-84.1491e-961.3107
RORO GUHHN1.5614e-61.8354e-71.3012e-73.5192e-81.9821e-82.2633e-67.8155e-72.7362e-84.5609e-961.3107
RORO GUHHE1.5553e-62.0414e-78.0389e-82.0261e-81.2518e-82.7735e-63.7504e-72.1192e-84.0995e-961.3107
BHB GUHHZ1.4807e-61.6480e-76.5755e-82.2556e-82.0687e-83.4832e-62.4586e-74.8983e-83.7592e-965.6353
BHB GUHHN1.2544e-61.5245e-77.8540e-82.1331e-81.5350e-82.5005e-62.4043e-73.3207e-83.2644e-965.6353
BHB GUHHE1.6321e-62.2475e-77.4003e-82.6973e-81.7007e-82.2956e-62.5119e-73.9338e-85.0566e-965.6353
QLNO IVHHZ5.9627e-77.4813e-83.7418e-81.9803e-81.3791e-89.8001e-72.1545e-71.8921e-81.8327e-980.785
QLNO IVHHN1.0669e-61.3635e-74.7685e-82.3581e-81.6995e-82.1289e-62.0485e-72.0424e-82.6452e-980.785
QLNO IVHHE1.0770e-61.2259e-74.5331e-82.0350e-81.3425e-81.5407e-61.8852e-72.3358e-82.9027e-980.785
RRL GUHHZ2.5716e-72.8077e-81.9728e-88.6744e-97.6633e-95.6461e-71.2899e-71.3083e-81.0523e-987.2329
RRL GUHHN2.6948e-74.4054e-83.4708e-81.3943e-88.2140e-96.8059e-71.7789e-71.1671e-81.1393e-987.2329
RRL GUHHE2.5666e-75.1142e-83.0352e-81.5416e-86.6468e-96.2141e-71.0909e-71.0088e-81.1378e-987.2329
RSP GUHHZ4.6358e-75.0212e-82.3426e-81.3375e-86.0906e-97.9426e-78.7344e-89.7400e-91.0714e-999.6356
RSP GUHHN4.2802e-75.4496e-83.2330e-81.3514e-88.5488e-99.3170e-71.2551e-71.1589e-81.6184e-999.6356
RSP GUHHE4.2855e-77.4067e-83.7931e-81.6358e-88.3118e-91.4276e-61.4016e-71.2970e-81.9562e-999.6356
PCP GUHHZ3.7298e-74.4384e-82.5134e-81.4608e-81.0964e-86.6514e-71.2974e-71.8840e-81.1345e-9100.672
PCP GUHHN2.8897e-74.0036e-83.2569e-82.0059e-81.0811e-86.9922e-71.5794e-71.7398e-81.1353e-9100.672
PCP GUHHE4.4098e-76.0874e-82.5570e-81.4355e-81.1369e-81.1340e-61.0609e-71.9896e-81.5257e-9100.672
*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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