MANUAL Location - Area: Francia , magnitude (ML): 0.8
2025-08-07 02:17:27 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-07 08:09:31

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Earthquake info - Manual location
Event - ID :250807021704
Magnitude (ML) :0.8 +/- 0.2
Origin Time :2025-08-07 02:17:27.122 (UTC)
Location : Latitude: 44.240 N, Longitude: 6.703 E
Area :Francia
Depth (km) :7.98
Distances (km) : 25.6 --- Argentera
28.7 --- Pietraporzio
31.6 --- Sambuco
34.8 --- Acceglio
38.3 --- Vinadio
38.7 --- Canosio
39.0 --- Prazzo
39.5 --- Marmora
41.9 --- Aisone
44.7 --- Castelmagno
44.9 --- Stroppo
45.4 --- Elva
45.5 --- Bellino
46.6 --- Celle di Macra
47.7 --- Macra
48.0 --- Demonte
48.7 --- Casteldelfino
49.8 --- Pontechianale
50.1 --- Pradleves
52.0 --- San Damiano Macra

Quality location estimate: Erh: 0.8 km, Erz: 0.6 km, Nf: 40, Gap: 112 °, Rms: 0.22


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.
SURFFR2025-08-07 02:17:33.0100.0190-0.071.302025-08-07 02:17:37.6520.04000.311.1129.3
ISOFR2025-08-07 02:17:33.4600.02000.191.392025-08-07 02:17:37.4500.0892-0.051.3229.7
VINDIV2025-08-07 02:17:34.9350.0200-0.011.412025-08-07 02:17:39.9590.0400-0.250.8539.2
OGDIFR2025-08-07 02:17:35.5100.07430.241.282025-08-07 02:17:41.4210.04000.071.4141.6
PZZGU2025-08-07 02:17:35.9800.02210.021.442025-08-07 02:17:41.9000.1334-0.290.8045.3
STVGU2025-08-07 02:17:36.7700.02510.370.922025-08-07 02:17:42.9700.15140.380.9150.4
MVIFFR2025-08-07 02:17:37.4100.02710.121.452025-08-07 02:17:44.7240.2517-0.111.0353.0
ENRGU2025-08-07 02:17:37.9900.02910.251.282025-08-07 02:17:45.5300.17350.630.4657.7
TURFFR2025-08-07 02:17:39.0700.03210.131.432025-08-07 02:17:47.2400.3027-0.230.8762.9
OGAGFR2025-08-07 02:17:38.5720.0200-0.250.832025-08-07 02:17:46.4220.0400-0.540.4063.0
ESCAFR2025-08-07 02:17:40.5500.16070.331.032025-08-07 02:17:49.4510.0400-0.121.1070.8
SAOFFR2025-08-07 02:17:40.9880.0200-0.051.302025-08-07 02:17:50.6910.0400-0.111.1174.0
RRLGU2025-08-07 02:17:41.1900.0432-0.041.312025-08-07 02:17:51.1000.3918-0.010.9076.7
BHBGU2025-08-07 02:17:41.6500.04010.141.392025-08-07 02:17:51.5540.04000.061.2380.2
MLIGIV2025-08-07 02:17:41.9260.0200-0.830.132025-08-07 02:17:53.5500.0400-0.101.0983.5
GBOSGU2025-08-07 02:17:43.4700.04520.261.202025-08-07 02:17:54.5290.37180.460.7191.0
MGROGU2025-08-07 02:17:43.4100.0462-0.540.372025-08-07 02:17:55.2400.5499-0.370.6291.4
IMIGU2025-08-07 02:17:45.2200.2008-0.131.062025-08-07 02:17:58.6100.04000.580.58102.2
ROROGU2025-08-07 02:17:46.6800.05520.201.252025-08-07 02:17:59.4640.4128-0.290.72109.9
RSPGU2025-08-07 02:17:47.2240.02000.500.652025-08-07 02:18:01.1740.04000.800.32110.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.755.28e-245.348
STV GUHH0.922.56e-250.489
ENR GUHH1.024.97e-257.791
TURF FRHH0.437.71e-362.9118
OGAG FRHH0.651.26e-263.0348
ESCA FRHH0.629.19e-370.8130
SAOF FRHH0.496.12e-374.0112
RRL GUHH0.848.55e-376.75
BHB GUHH0.717.77e-380.234
MGRO GUHH0.879.27e-391.4104
IMI GUHH1.121.67e-2102.2111
RORO GUHH1.201.25e-2109.997
RSP GUHH0.825.51e-3110.724


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.
(°)
ISO FRHHZ3.0463e-63.6299e-71.3984e-75.0331e-82.2093e-86.1481e-66.3061e-73.6039e-87.5537e-929.7102
ISO FRHHN4.3591e-65.9609e-71.8704e-75.5802e-82.6319e-87.6730e-64.9945e-74.8578e-81.2630e-829.7102
ISO FRHHE2.4925e-63.8111e-71.6740e-74.2827e-82.4813e-86.1281e-69.7741e-74.2154e-87.8210e-929.7102
PZZ GUHHZ4.3275e-66.1621e-73.5819e-79.6884e-84.5401e-81.6689e-51.5571e-67.1993e-81.4499e-845.348
PZZ GUHHN6.1810e-69.3130e-74.2157e-71.3188e-77.1162e-82.6471e-51.3619e-61.1932e-72.3224e-845.348
PZZ GUHHE6.3728e-61.1673e-64.6279e-71.7603e-78.1374e-82.2876e-52.4076e-61.3047e-72.3890e-845.348
STV GUHHZ2.2064e-63.2980e-71.8560e-76.3716e-83.0921e-85.8215e-61.0198e-64.2709e-86.9947e-950.489
STV GUHHN1.9196e-63.2077e-72.3312e-77.5885e-83.9986e-86.0842e-61.1858e-65.6855e-88.1179e-950.489
STV GUHHE2.1336e-63.3763e-71.8283e-76.7494e-82.4031e-84.4905e-69.8150e-73.6344e-87.3042e-950.489
ENR GUHHZ4.6420e-66.6615e-73.0653e-71.2234e-74.3667e-81.2820e-51.4070e-66.6338e-81.4920e-857.791
ENR GUHHN9.0624e-61.1249e-64.8071e-71.6577e-78.3877e-81.6925e-52.6807e-61.3845e-72.2457e-857.791
ENR GUHHE8.4052e-68.2056e-73.7750e-71.0303e-74.7215e-81.6060e-51.5718e-68.2936e-81.7425e-857.791
TURF FRHHZ6.9575e-79.5562e-88.6969e-83.2688e-81.4221e-81.4632e-63.9262e-72.1803e-82.7136e-962.9118
TURF FRHHN6.7256e-71.0689e-77.9903e-82.2072e-81.1839e-82.1218e-63.2440e-71.6023e-82.4605e-962.9118
TURF FRHHE6.9376e-71.0550e-78.1892e-82.7881e-81.2374e-82.1048e-64.4882e-71.7833e-82.6881e-962.9118
OGAG FRHHZ5.4343e-71.3664e-78.9679e-85.1564e-81.6709e-81.2879e-63.9609e-72.0074e-82.1185e-963.0348
OGAG FRHHN5.0252e-71.0047e-78.9640e-84.6410e-82.0016e-81.0820e-64.9358e-72.8357e-82.6441e-963.0348
OGAG FRHHE3.2300e-71.0767e-79.1763e-85.9456e-83.2321e-88.1780e-75.5117e-73.1816e-83.8509e-963.0348
ESCA FRHHZ1.1869e-61.5655e-77.5288e-82.1742e-89.7077e-91.8247e-63.7645e-71.5406e-82.2971e-970.8130
ESCA FRHHN8.9202e-71.3775e-78.9587e-82.9741e-81.5392e-83.9221e-63.8707e-71.9096e-83.0747e-970.8130
ESCA FRHHE9.7452e-71.4834e-71.0352e-73.0507e-81.4384e-82.4400e-64.3003e-72.1826e-83.1166e-970.8130
SAOF FRHHZ2.8600e-77.2803e-85.8687e-82.7765e-81.2773e-88.0546e-74.2664e-71.8997e-82.0328e-974.0112
SAOF FRHHN4.3530e-75.6803e-84.8897e-82.3149e-81.1391e-81.0141e-63.3634e-71.5213e-81.6600e-974.0112
SAOF FRHHE4.1155e-76.5647e-85.3899e-82.2351e-81.1423e-81.2704e-64.7092e-71.4181e-81.7298e-974.0112
RRL GUHHZ4.6609e-77.9324e-84.4418e-82.4020e-89.3961e-91.0497e-62.3804e-71.3255e-81.6899e-976.75
RRL GUHHN4.5545e-79.6223e-87.4024e-83.6532e-81.4003e-81.3567e-64.0291e-71.9221e-82.8118e-976.75
RRL GUHHE4.4266e-77.6046e-85.7503e-83.1582e-81.2498e-81.5791e-63.5016e-71.5527e-82.0854e-976.75
BHB GUHHZ9.4133e-71.7617e-79.5424e-83.2063e-81.1902e-83.9140e-63.7909e-72.0259e-84.3656e-980.234
BHB GUHHN6.0050e-71.2487e-77.3781e-82.5978e-81.1634e-82.3668e-62.9649e-71.6458e-82.7929e-980.234
BHB GUHHE6.8077e-79.6641e-86.9737e-83.5566e-81.2943e-82.2587e-63.1467e-71.6072e-82.8974e-980.234
GBOS GUHHZ1.3662e-62.5357e-71.5395e-75.1298e-82.4857e-83.2741e-68.1369e-73.3299e-85.9391e-991.089
GBOS GUHHN9.5007e-71.7686e-71.3739e-74.9028e-82.4145e-83.7091e-66.4763e-73.2676e-84.7580e-991.089
GBOS GUHHE1.6100e-62.7773e-71.8696e-75.9667e-82.5180e-86.0255e-66.6839e-73.5389e-85.7075e-991.089
MGRO GUHHZ5.1198e-76.4913e-84.8370e-82.3912e-89.7033e-91.2321e-62.9045e-71.4896e-81.7391e-991.4104
MGRO GUHHN5.4624e-71.1141e-77.5350e-82.8162e-81.3570e-81.3343e-64.6678e-71.8403e-83.0485e-991.4104
MGRO GUHHE4.8578e-79.1444e-86.8892e-82.5791e-81.0715e-81.5646e-63.7353e-71.5487e-81.9853e-991.4104
IMI GUHHZ1.4350e-61.8513e-78.2582e-83.1269e-81.4465e-82.7375e-64.0338e-72.2068e-84.5380e-9102.2111
IMI GUHHN2.5385e-62.8516e-71.3730e-74.2550e-82.5319e-84.3652e-69.4192e-73.8597e-86.4494e-9102.2111
IMI GUHHE1.2373e-62.1449e-71.1745e-73.4931e-81.6613e-84.2848e-66.0499e-72.4262e-85.1014e-9102.2111
RORO GUHHZ7.0941e-79.3131e-87.7400e-83.0681e-82.8153e-81.8183e-63.2362e-74.6159e-85.9479e-9109.997
RORO GUHHN7.4084e-71.3384e-79.3803e-82.4116e-81.1838e-81.6645e-63.2603e-71.6635e-83.5110e-9109.997
RORO GUHHE5.5223e-71.3740e-78.7447e-82.4378e-81.8948e-81.4664e-64.2886e-72.9713e-83.5593e-9109.997
RSP GUHHZ4.6972e-77.3035e-83.6550e-81.9495e-88.1972e-97.8194e-71.7327e-71.0773e-81.3651e-9110.724
RSP GUHHN4.1408e-76.1856e-85.1944e-82.1846e-89.8149e-99.1550e-71.9885e-71.3076e-81.7455e-9110.724
RSP GUHHE3.8687e-76.9796e-85.6079e-82.1399e-89.1507e-91.0985e-63.1441e-71.3316e-81.6049e-9110.724
*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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