MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.7
2025-08-16 13:11:08 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-16 20:59:19

RSNI Logo

Earthquake info - Manual location
Event - ID :250816131045
Magnitude (ML) :0.7 +/- 0.2
Origin Time :2025-08-16 13:11:08.853 (UTC)
Location : Latitude: 44.538 N, Longitude: 6.879 E
Area :Alpi Cozie
Depth (km) :20.59
Distances (km) : 11.1 --- Acceglio
12.0 --- Bellino
15.2 --- Pontechianale
15.2 --- Prazzo
16.2 --- Casteldelfino
16.3 --- Argentera
16.7 --- Elva
18.4 --- Canosio
19.1 --- Marmora
19.9 --- Stroppo
24.1 --- Macra
24.6 --- Celle di Macra
24.7 --- Pietraporzio
25.1 --- Sampeyre
27.0 --- Sambuco
28.5 --- Crissolo
29.1 --- Oncino
30.0 --- Castelmagno
30.0 --- Ostana
30.3 --- San Damiano Macra

Quality location estimate: Erh: 1 km, Erz: 1.1 km, Nf: 22, Gap: 96 °, Rms: 0.71


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.
SURFFR2025-08-16 13:11:11.8400.0090-1.510.012025-08-16 13:11:12.6600.0250-3.900.0022.2
PZZGU2025-08-16 13:11:14.2600.01000.012.412025-08-16 13:11:16.9100.0621-1.170.0129.1
VINDIV2025-08-16 13:11:16.2420.0200-0.042.152025-08-16 13:11:21.3570.0400-0.041.8440.2
OGAGFR2025-08-16 13:11:16.8900.02000.012.272025-08-16 13:11:22.5020.04000.011.8444.4
ISOFR2025-08-16 13:11:18.1900.04120.810.732025-08-16 13:11:23.1970.10020.071.5946.8
RRLGU2025-08-16 13:11:18.4810.02000.690.542025-08-16 13:11:24.0080.04000.021.7548.8
BHBGU2025-08-16 13:11:18.6100.02710.910.572025-08-16 13:11:23.9920.18350.201.1249.6
TURFFR2025-08-16 13:11:24.6100.02001.980.792025-08-16 13:11:33.1100.46090.780.7177.5
RSPGU2025-08-16 13:11:24.2200.02001.920.822025-08-16 13:11:33.4700.22361.720.6277.5
SAOFFR2025-08-16 13:11:25.8110.02002.290.272025-08-16 13:11:35.6700.27071.830.6384.2
GBOSGU2025-08-16 13:11:25.0200.02001.800.752025-08-16 13:11:34.5700.46491.260.5985.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.931.91e-129.1100
OGAG FRHH0.692.88e-244.4316
ISO FRHH0.218.46e-346.8161
RRL GUHH0.571.22e-248.8351
BHB GUHH0.621.76e-249.642
TURF FRHH0.526.01e-377.5147
RSP GUHH0.741.06e-277.524
SAOF FRHH0.605.95e-384.2138
GBOS GUHH1.037.78e-385.8113


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 GUHHZ1.2921e-51.5940e-69.6283e-72.4315e-71.1286e-72.9013e-53.8538e-61.9455e-74.0458e-829.1100
PZZ GUHHN1.6242e-52.3531e-61.5875e-65.3707e-73.2660e-73.6614e-59.4380e-64.6001e-76.2604e-829.1100
PZZ GUHHE1.6619e-53.1887e-61.8093e-64.7956e-72.4275e-73.1418e-59.3951e-63.4990e-76.9841e-829.1100
OGAG FRHHZ5.9649e-71.3596e-71.3056e-77.6350e-83.1306e-81.5608e-68.5572e-73.7548e-83.6157e-944.4316
OGAG FRHHN7.0891e-71.4393e-71.2804e-75.7699e-82.3474e-82.2762e-65.5772e-73.4518e-84.1995e-944.4316
OGAG FRHHE6.5222e-72.7532e-72.1439e-71.5598e-76.7691e-81.5912e-61.6305e-67.8401e-89.3716e-944.4316
ISO FRHHZ8.5482e-71.3167e-76.1425e-81.5039e-88.6259e-92.1079e-62.3174e-71.5564e-83.1127e-946.8161
ISO FRHHN1.0851e-61.4243e-75.5929e-81.2690e-87.0605e-91.7601e-62.3908e-71.2008e-82.9671e-946.8161
ISO FRHHE1.0340e-61.6961e-77.3083e-82.0404e-81.2568e-82.1841e-64.4801e-72.2080e-83.8889e-946.8161
RRL GUHHZ7.4144e-71.1101e-78.1280e-83.6397e-81.8051e-81.8841e-63.4370e-72.4968e-83.3109e-948.8351
RRL GUHHN1.0355e-61.9234e-71.2374e-74.1903e-81.9250e-83.1877e-65.3489e-72.7770e-84.8442e-948.8351
RRL GUHHE9.0869e-71.7098e-71.2535e-74.7093e-82.0901e-82.6681e-67.3590e-72.8257e-84.1806e-948.8351
BHB GUHHZ2.1094e-63.1250e-71.6666e-75.2501e-82.5066e-85.7697e-61.0060e-64.0856e-87.7600e-949.642
BHB GUHHN1.6680e-62.4850e-71.6667e-74.9075e-82.2741e-84.8489e-69.7607e-73.2636e-85.9579e-949.642
BHB GUHHE1.9721e-62.5114e-71.1946e-74.5099e-81.9659e-85.8030e-65.8460e-73.1482e-86.2955e-949.642
TURF FRHHZ3.8755e-75.8470e-84.4280e-81.5411e-81.0755e-81.0335e-62.8299e-71.5503e-81.4169e-977.5147
TURF FRHHN4.8914e-79.3394e-85.0601e-81.4548e-81.0953e-81.5165e-62.4297e-71.4810e-82.0895e-977.5147
TURF FRHHE6.5854e-78.2857e-85.6811e-82.1273e-89.8530e-91.4325e-63.4549e-71.6173e-81.9966e-977.5147
RSP GUHHZ8.2809e-71.1619e-75.1342e-81.9876e-89.2387e-91.7813e-62.0669e-71.3165e-82.2504e-977.524
RSP GUHHN9.9856e-71.6185e-79.3097e-82.8968e-81.4649e-82.6172e-63.6057e-72.3675e-83.9441e-977.524
RSP GUHHE9.1020e-71.5963e-78.6140e-82.5589e-81.0752e-83.4164e-62.6583e-71.6058e-83.7696e-977.524
SAOF FRHHZ2.6623e-76.4783e-86.2246e-82.5781e-89.0453e-96.8262e-73.5809e-71.1929e-82.0310e-984.2138
SAOF FRHHN2.6499e-76.2301e-83.8111e-82.1175e-82.0583e-87.8356e-72.0539e-72.9109e-82.3197e-984.2138
SAOF FRHHE2.7805e-74.8029e-85.0691e-81.9086e-89.2901e-95.4713e-73.3269e-71.4502e-81.4966e-984.2138
GBOS GUHHZ5.6097e-79.5011e-87.8202e-82.3118e-81.1022e-81.8543e-63.9098e-71.6804e-82.3500e-985.8113
GBOS GUHHN4.7691e-78.9700e-86.8049e-83.0216e-81.5120e-81.1131e-63.0435e-72.1958e-82.8350e-985.8113
GBOS GUHHE5.8038e-71.2174e-76.4487e-82.3509e-81.0782e-81.1295e-62.8571e-71.8734e-83.0250e-985.8113
*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)

rsni