MANUAL Location - Area: Francia , magnitude (ML): 1.6
2025-09-15 04:23:23 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-15 08:20:02

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Earthquake info - Manual location
Event - ID :250915042152
Magnitude (ML) :1.6 +/- 0.2
Origin Time :2025-09-15 04:23:23.179 (UTC)
Location : Latitude: 44.492 N, Longitude: 6.445 E
Area :Francia
Depth (km) :2.70
Distances (km) : 40.5 --- Argentera
43.3 --- Acceglio
46.4 --- Bellino
48.4 --- Prazzo
48.5 --- Pontechianale
49.5 --- Pietraporzio
50.7 --- Canosio
50.7 --- Casteldelfino
51.4 --- Elva
51.6 --- Marmora
52.8 --- Sambuco
54.1 --- Stroppo
55.4 --- Claviere
58.2 --- Macra
58.3 --- Cesana Torinese
58.3 --- Celle di Macra
59.8 --- Sauze di Cesana
59.8 --- Sampeyre
61.0 --- Crissolo
61.4 --- Vinadio

Quality location estimate: Erh: 0.8 km, Erz: 0.8 km, Nf: 32, Gap: 170 °, Rms: 0.19


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.
SURFFR2025-09-15 04:23:29.6000.02210.031.552025-09-15 04:23:34.3150.0400-0.051.5229.3
OGAGFR2025-09-15 04:23:30.3800.0251-0.001.602025-09-15 04:23:36.1420.04000.620.1834.0
OGDIFR2025-09-15 04:23:32.6400.02710.061.442025-09-15 04:23:39.0370.0400-0.530.5146.1
RRLGU2025-09-15 04:23:34.0500.0301-0.231.152025-09-15 04:23:42.0670.2376-0.161.0755.2
ISOFR2025-09-15 04:23:34.5500.0351-0.161.342025-09-15 04:23:42.6700.1825-0.001.1559.1
VINDIV2025-09-15 04:23:35.0540.0200-0.111.452025-09-15 04:23:42.7670.0400-0.740.3261.5
BHBGU2025-09-15 04:23:37.3400.0422-0.071.442025-09-15 04:23:47.5560.0400-0.021.2075.2
ENRGU2025-09-15 04:23:38.2500.0472-0.221.182025-09-15 04:23:49.0490.04000.011.1582.8
TURFFR2025-09-15 04:23:40.7760.0200-0.021.362025-09-15 04:23:53.1690.0400-0.141.0894.8
RSPGU2025-09-15 04:23:41.2300.05120.081.232025-09-15 04:23:53.9230.0400-0.011.0797.6
ESCAFR2025-09-15 04:23:42.5400.05720.151.052025-09-15 04:23:57.0560.04001.040.08104.4
SAOFFR2025-09-15 04:23:42.2570.0200-0.370.832025-09-15 04:23:56.5560.04000.370.66104.7
GBOSGU2025-09-15 04:23:43.5000.0623-0.111.272025-09-15 04:23:57.8300.04000.140.93114.3
MGROGU2025-09-15 04:23:44.2820.0200-0.800.262025-09-15 04:24:00.5420.04000.220.82119.5
LATOIV2025-09-15 04:23:44.7130.02000.091.152025-09-15 04:23:59.8830.04000.080.95120.4
LSDGU2025-09-15 04:23:44.4110.0200-0.670.392025-09-15 04:24:00.0340.0400-0.540.64120.6


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
OGAG FRHH1.412.55e-134.013
RRL GUHH1.579.40e-255.230
ISO FRHH0.973.01e-259.1125
BHB GUHH1.364.05e-275.259
ENR GUHH1.618.77e-282.8110
TURF FRHH1.604.54e-294.8127
RSP GUHH1.443.15e-297.641
ESCA FRHH1.623.75e-2104.4134
SAOF FRHH1.664.11e-2104.7122
GBOS GUHH1.892.84e-2114.3104
MGRO GUHH1.864.69e-2119.5114
LSD GUHH1.612.58e-2120.627


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.
(°)
OGAG FRHHZ3.4710e-61.2296e-61.1920e-69.4161e-73.4412e-76.2166e-66.3577e-64.2976e-73.7144e-834.013
OGAG FRHHN3.4472e-61.0214e-61.1351e-68.3786e-73.4000e-78.0641e-66.1617e-63.6620e-73.1459e-834.013
OGAG FRHHE3.5184e-61.6865e-61.5050e-61.6653e-69.9900e-77.0122e-67.5466e-61.3875e-66.1773e-834.013
RRL GUHHZ1.2760e-63.0355e-73.3438e-72.5188e-71.5282e-74.9907e-62.8839e-62.0363e-71.2997e-855.230
RRL GUHHN1.6552e-68.1774e-76.0769e-75.2497e-72.1905e-75.5292e-62.2925e-62.5015e-72.3923e-855.230
RRL GUHHE2.2330e-65.7640e-75.7580e-74.7191e-74.4300e-75.3792e-62.8975e-66.5592e-72.5290e-855.230
ISO FRHHZ9.6572e-72.3629e-72.2785e-71.0750e-74.6266e-83.3682e-61.3813e-65.8397e-85.9716e-959.1125
ISO FRHHN1.2684e-63.1288e-72.6443e-71.5281e-78.1271e-83.7913e-61.1726e-69.2253e-87.9042e-959.1125
ISO FRHHE9.7317e-72.5289e-71.9659e-71.2243e-76.6524e-83.6696e-61.0394e-66.2618e-87.5231e-959.1125
BHB GUHHZ2.5244e-65.9381e-73.9134e-71.5217e-77.5600e-88.5222e-61.9094e-69.4434e-81.5047e-875.259
BHB GUHHN1.3024e-63.9046e-73.0892e-71.6808e-79.8732e-83.9363e-61.6893e-69.2726e-89.3999e-975.259
BHB GUHHE1.0859e-63.4549e-73.1654e-72.1350e-71.0116e-73.5030e-61.5851e-61.0953e-79.9599e-975.259
ENR GUHHZ2.4384e-65.1527e-75.0878e-72.6962e-71.1502e-78.0793e-62.9959e-61.4885e-71.4104e-882.8110
ENR GUHHN3.9524e-66.8862e-77.3079e-74.9534e-72.3113e-71.1071e-54.3164e-62.2777e-72.2911e-882.8110
ENR GUHHE3.2161e-68.2751e-76.6594e-74.1503e-71.9938e-78.0622e-63.8517e-61.8104e-72.2503e-882.8110
TURF FRHHZ1.3406e-63.3657e-73.8247e-71.8865e-77.9546e-83.9072e-61.9345e-61.0694e-71.1028e-894.8127
TURF FRHHN1.1411e-63.2502e-72.8429e-71.3704e-75.8710e-83.5317e-61.3063e-67.2411e-87.9274e-994.8127
TURF FRHHE1.0062e-63.7934e-73.1139e-71.8699e-79.7229e-83.4250e-62.4913e-69.4988e-81.1775e-894.8127
RSP GUHHZ1.1489e-62.6059e-72.6276e-71.3352e-75.2543e-82.7667e-61.1179e-67.5608e-88.1381e-997.641
RSP GUHHN1.1226e-62.9081e-72.5426e-71.3346e-76.6912e-82.3771e-61.2188e-69.5039e-89.8069e-997.641
RSP GUHHE1.2778e-63.4814e-72.6900e-71.3858e-76.0112e-84.2603e-61.8025e-66.7881e-88.5658e-997.641
ESCA FRHHZ1.3317e-63.1298e-72.6170e-71.1015e-75.2113e-82.3610e-61.4880e-66.8772e-87.5678e-9104.4134
ESCA FRHHN1.3648e-63.4227e-72.7521e-71.5982e-76.4149e-82.5435e-61.7858e-66.9487e-88.1671e-9104.4134
ESCA FRHHE1.1332e-63.3196e-73.2423e-71.2871e-74.8655e-83.2759e-62.0030e-66.7574e-88.8403e-9104.4134
SAOF FRHHZ1.5261e-63.1399e-72.9066e-71.5674e-76.5093e-84.6359e-61.4100e-66.6271e-87.9435e-9104.7122
SAOF FRHHN7.8887e-72.2807e-72.2742e-72.0171e-71.0954e-72.0882e-61.4017e-69.8684e-87.8083e-9104.7122
SAOF FRHHE9.5964e-72.0396e-72.1741e-71.1525e-76.0986e-85.7619e-61.6044e-67.7608e-87.4882e-9104.7122
GBOS GUHHZ1.1930e-63.0955e-72.5559e-71.7382e-78.1133e-82.2442e-61.3991e-69.0331e-87.1487e-9114.3104
GBOS GUHHN5.4797e-71.8046e-71.7494e-71.6144e-71.0581e-71.8022e-61.1270e-61.0439e-76.5127e-9114.3104
GBOS GUHHE9.5612e-72.6971e-72.4174e-71.2242e-75.4213e-83.2494e-61.5030e-67.0284e-87.9247e-9114.3104
MGRO GUHHZ1.0837e-62.8274e-72.7752e-71.6079e-76.4831e-83.7628e-61.2841e-67.6468e-88.4433e-9119.5114
MGRO GUHHN8.9529e-73.1159e-73.2633e-71.8193e-78.0457e-82.7093e-62.5957e-61.1354e-71.0840e-8119.5114
MGRO GUHHE1.6654e-63.9173e-73.0703e-71.8919e-77.1080e-84.6682e-61.8051e-67.7856e-81.0220e-8119.5114
LSD GUHHZ6.9662e-72.5777e-72.3217e-71.0456e-77.6036e-81.3532e-62.0317e-61.2002e-78.5183e-9120.627
LSD GUHHN1.0106e-63.1748e-73.0336e-79.2864e-85.4514e-81.2902e-63.6235e-67.9882e-89.1812e-9120.627
LSD GUHHE6.6622e-72.0561e-72.0992e-78.4467e-84.6736e-81.0990e-61.9532e-66.4744e-86.0778e-9120.627
*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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