MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.6
2025-10-01 09:20:59 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-01 10:14:32

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Earthquake info - Manual location
Event - ID :251001091946
Magnitude (ML) :0.6 +/- 0.2
Origin Time :2025-10-01 09:20:59.519 (UTC)
Location : Latitude: 44.504 N, Longitude: 7.239 E
Area :Alpi Cozie
Depth (km) :4.11
Distances (km) : 2.1 --- San Damiano Macra
4.8 --- Cartignano
4.8 --- Macra
5.3 --- Celle di Macra
8.1 --- Frassino
8.6 --- Roccabruna
8.9 --- Stroppo
9.1 --- Melle
9.2 --- Sampeyre
9.5 --- Valmala
9.9 --- Pradleves
10.6 --- Dronero
10.7 --- Castelmagno
11.5 --- Villar San Costanzo
12.2 --- Brossasco
12.4 --- Monterosso Grana
12.5 --- Elva
12.6 --- Marmora
13.1 --- Montemale di Cuneo
13.5 --- Canosio

Quality location estimate: Erh: 1.2 km, Erz: 1.7 km, Nf: 30, Gap: 118 °, Rms: 0.39


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.
PZZGU2025-10-01 09:21:02.0000.0070-0.041.452025-10-01 09:21:03.5100.0340-0.341.3311.2
VINDIV2025-10-01 09:21:03.3600.0200-0.720.732025-10-01 09:21:06.2520.0400-1.020.4322.6
STVGU2025-10-01 09:21:05.3300.01700.021.542025-10-01 09:21:08.9400.0952-0.341.2630.0
ENRGU2025-10-01 09:21:06.0800.01900.061.362025-10-01 09:21:10.2400.1083-0.251.2734.1
SURFFR2025-10-01 09:21:05.9600.0211-0.331.312025-10-01 09:21:10.2500.1013-1.000.5134.2
BHBGU2025-10-01 09:21:06.4670.02910.011.512025-10-01 09:21:10.5620.1875-0.621.0137.1
ISOFR2025-10-01 09:21:07.3650.02000.440.292025-10-01 09:21:11.9200.1203-0.041.2739.0
GBOSGU2025-10-01 09:21:09.7300.05420.021.342025-10-01 09:21:16.2310.2086-0.441.1756.2
RRLGU2025-10-01 09:21:10.4090.02000.061.252025-10-01 09:21:16.7100.3527-1.260.3658.7
TURFFR2025-10-01 09:21:11.1370.02000.350.352025-10-01 09:21:18.2200.1002-0.501.1360.2
SAOFFR2025-10-01 09:21:11.1850.0200-0.031.362025-10-01 09:21:18.7830.0400-0.601.0262.9
MLIGIV2025-10-01 09:21:11.6270.0200-0.441.212025-10-01 09:21:19.6590.0400-1.240.2867.5
MVIFFR2025-10-01 09:21:12.7590.02000.560.202025-10-01 09:21:21.1100.2386-0.171.1868.0
ROROGU2025-10-01 09:21:13.1390.0401-0.401.242025-10-01 09:21:22.5930.1002-0.541.0979.0
IMIGU2025-10-01 09:21:13.7570.0200-0.650.932025-10-01 09:21:23.9790.1002-0.940.6484.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.625.26e-111.2272
ENR GUHH0.747.37e-234.1155
BHB GUHH0.492.32e-237.13
ISO FRHH0.221.24e-239.0203
GBOS GUHH0.831.25e-256.2121
RRL GUHH0.639.55e-358.7323
TURF FRHH0.346.84e-360.2168
RORO GUHH0.841.20e-279.0123
IMI GUHH0.881.51e-284.2141


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 GUHHZ6.1882e-57.6249e-64.6381e-61.3925e-67.4372e-79.8823e-52.1140e-51.1128e-61.9380e-711.2272
PZZ GUHHN5.7444e-56.9594e-63.3728e-68.6457e-74.2836e-77.8955e-51.4689e-57.7191e-71.6842e-711.2272
PZZ GUHHE4.5266e-56.9339e-65.3412e-61.6508e-68.1149e-78.9246e-52.8246e-51.1871e-61.6122e-711.2272
STV GUHHZ2.3284e-62.5265e-71.0484e-72.7264e-81.6025e-85.3280e-64.2437e-72.5639e-85.5493e-930.0167
STV GUHHN3.0363e-62.7732e-78.5852e-82.5454e-81.4283e-84.1654e-63.4712e-72.5462e-86.0175e-930.0167
STV GUHHE2.7327e-63.3187e-79.7846e-83.0147e-81.5722e-84.9569e-64.9690e-72.7179e-86.7252e-930.0167
ENR GUHHZ1.3152e-51.2697e-62.7420e-78.1850e-84.4337e-81.7943e-58.5557e-79.2146e-82.6342e-834.1155
ENR GUHHN2.5351e-52.3304e-64.3140e-71.3457e-77.2755e-82.7936e-51.6693e-61.4741e-74.4055e-834.1155
ENR GUHHE2.4943e-52.4414e-65.0598e-71.3073e-77.2721e-83.5975e-51.7342e-61.5901e-74.3655e-834.1155
BHB GUHHZ4.6099e-66.2781e-72.0358e-76.1808e-82.9399e-81.1452e-56.0543e-74.6994e-81.1963e-837.13
BHB GUHHN3.7916e-64.3891e-71.7042e-74.8563e-82.4643e-88.2975e-66.1551e-74.2962e-89.7357e-937.13
BHB GUHHE4.0840e-64.1139e-71.8808e-76.7621e-83.9201e-88.3547e-68.5834e-76.2581e-89.9244e-937.13
ISO FRHHZ2.5186e-64.3924e-71.5121e-74.9116e-83.0763e-84.8071e-65.6071e-74.5083e-87.9239e-939.0203
ISO FRHHN1.8652e-62.9528e-78.9764e-82.7568e-81.7169e-84.3202e-63.6307e-73.2942e-86.8401e-939.0203
ISO FRHHE2.0979e-62.6979e-79.7684e-82.5957e-81.6892e-82.9098e-64.3760e-72.8426e-85.8064e-939.0203
GBOS GUHHZ1.5942e-62.5699e-71.4248e-73.5023e-82.0771e-83.4533e-68.0344e-73.5950e-85.6488e-956.2121
GBOS GUHHN1.3410e-61.8145e-71.1363e-74.1210e-82.5012e-83.8149e-66.7969e-73.8074e-84.3432e-956.2121
GBOS GUHHE1.0962e-61.6806e-71.2737e-73.1689e-81.8068e-85.0944e-68.7226e-72.4930e-83.9481e-956.2121
RRL GUHHZ8.7358e-71.0307e-73.8542e-82.1891e-81.1260e-81.4958e-61.2660e-71.5280e-82.4099e-958.7323
RRL GUHHN9.0270e-71.2396e-77.8503e-82.7163e-81.3705e-83.5647e-64.2044e-71.8520e-83.3035e-958.7323
RRL GUHHE7.4232e-71.1472e-75.8516e-82.1857e-81.2469e-82.7319e-62.6580e-71.3511e-82.7465e-958.7323
TURF FRHHZ5.2494e-77.0613e-83.7704e-82.0062e-81.5155e-89.8960e-71.4946e-72.0745e-81.6870e-960.2168
TURF FRHHN6.3614e-71.2290e-75.6244e-82.0502e-81.8728e-82.1487e-62.4024e-72.5224e-82.9916e-960.2168
TURF FRHHE4.8989e-76.4379e-84.4235e-82.3879e-81.7123e-81.2541e-61.9697e-72.4973e-81.7648e-960.2168
SAOF FRHHZ3.3994e-74.4455e-83.2518e-81.8163e-81.2767e-88.4594e-71.7286e-71.6366e-81.4721e-962.9156
SAOF FRHHN2.8957e-75.0464e-83.0446e-82.1425e-81.4351e-86.7814e-71.5392e-72.4457e-81.2688e-962.9156
SAOF FRHHE3.7988e-74.8941e-83.4843e-82.2434e-81.3915e-81.0095e-61.6556e-71.9651e-81.2889e-962.9156
RORO GUHHZ1.6989e-62.4054e-78.6714e-82.8589e-81.9850e-83.8043e-63.6485e-73.9776e-84.4905e-979.0123
RORO GUHHN1.2754e-61.8473e-71.1293e-72.7287e-81.8242e-83.4467e-65.6428e-73.0161e-83.8349e-979.0123
RORO GUHHE1.5327e-62.1118e-71.1851e-72.7950e-81.7141e-84.5564e-65.3009e-72.9961e-84.7335e-979.0123
IMI GUHHZ8.4662e-71.1668e-76.3387e-83.8749e-82.1727e-81.6363e-63.5062e-72.2474e-82.8996e-984.2141
IMI GUHHN3.1814e-62.4618e-71.5097e-76.2876e-83.0364e-83.9850e-67.9734e-74.3043e-86.0816e-984.2141
IMI GUHHE1.2523e-61.3983e-77.6752e-83.4021e-82.1444e-82.2783e-63.4778e-73.7495e-84.0179e-984.2141
*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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