MANUAL Location - Area: Riviera di ponente , magnitude (ML): 0.5
2026-09-16 01:38:13 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-09-16 09:47:48

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Earthquake info - Manual location
Event - ID :260916013649
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2026-09-16 01:38:13.241 (UTC)
Location : Latitude: 43.676 N, Longitude: 7.738 E
Area :Riviera di ponente
Depth (km) :11.12
Distances (km) : 13.4 --- Bordighera
14.2 --- Ospedaletti
14.7 --- Vallecrosia
16.3 --- San Remo
16.5 --- Vallebona
16.6 --- Ventimiglia
17.2 --- Seborga
17.5 --- San Biagio della Cima
18.0 --- Camporosso
18.4 --- Soldano
21.5 --- Riva Ligure
21.7 --- Dolceacqua
22.2 --- Santo Stefano al Mare
22.2 --- Perinaldo
22.7 --- Taggia
23.2 --- Ceriana
23.3 --- Pompeiana
23.6 --- Castellaro
23.6 --- Terzorio
23.8 --- Apricale

Quality location estimate: Erh: 1.2 km, Erz: 2.1 km, Nf: 28, Gap: 257 °, Rms: 0.16


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.
BURYGU2026-09-16 01:38:16.7910.0200-0.720.022026-09-16 01:38:20.6710.30770.050.9821.8
BRDIT2026-09-16 01:38:18.4290.0200-0.240.722026-09-16 01:38:22.6840.04000.031.5227.7
IMIGU2026-09-16 01:38:19.3200.01500.450.292026-09-16 01:38:23.5860.15840.590.2631.3
ESCAFR2026-09-16 01:38:20.3800.02110.041.572026-09-16 01:38:25.4800.1033-0.021.3535.9
MLIGIV2026-09-16 01:38:20.1950.0200-0.330.472026-09-16 01:38:25.9680.04000.091.3236.7
SAOFFR2026-09-16 01:38:20.8590.0200-0.081.402026-09-16 01:38:26.3450.1404-0.210.9639.4
DNSPIT2026-09-16 01:38:20.0760.0200-0.051.512026-09-16 01:38:26.2180.04001.120.0240.4
MGROGU2026-09-16 01:38:21.2200.05720.021.542026-09-16 01:38:27.3700.20960.290.7943.1
TURFFR2026-09-16 01:38:21.9370.02000.121.282026-09-16 01:38:28.0040.0400-0.051.3444.7
ROROGU2026-09-16 01:38:23.1100.02610.210.932026-09-16 01:38:30.1710.35970.360.6656.3
GBOSGU2026-09-16 01:38:24.4850.02000.011.492026-09-16 01:38:32.5900.23160.260.8364.6
ENRGU2026-09-16 01:38:25.3800.04010.151.152026-09-16 01:38:33.6900.29870.120.8867.8
STVGU2026-09-16 01:38:25.9630.0200-0.051.402026-09-16 01:38:34.6920.0400-0.190.9872.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
BRD ITHN0.433.87e-227.7358
IMI GUHH0.262.79e-231.325
DNSP ITHN0.865.07e-240.443
MGRO GUHH0.371.44e-243.18
RORO GUHH0.357.94e-356.328
GBOS GUHH0.871.03e-264.67
ENR GUHH0.701.67e-267.8338
STV GUHH0.484.24e-372.4333


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.
(°)
BURY GUHHZ2.0778e-62.5948e-71.0537e-74.9424e-83.5287e-83.6182e-63.4846e-74.8753e-85.1740e-921.8309
BURY GUHHN2.4150e-62.9864e-71.5621e-76.5236e-83.4785e-84.8477e-67.9840e-76.0121e-87.3908e-921.8309
BURY GUHHE2.7999e-63.0266e-71.0061e-74.3059e-83.4362e-84.6315e-66.1004e-74.0835e-85.8321e-921.8309
BRD ITHNZ2.4891e-62.9911e-72.7222e-72.3684e-71.3608e-73.6529e-61.5817e-61.5379e-71.2324e-827.7358
BRD ITHNN1.9772e-63.9577e-73.4036e-72.7032e-72.0661e-73.8028e-61.9465e-63.8474e-71.7655e-827.7358
BRD ITHNE1.5696e-63.3904e-72.6989e-72.3770e-71.3371e-74.0505e-61.5667e-61.4255e-71.2340e-827.7358
IMI GUHHZ4.0628e-64.5831e-79.9161e-83.0861e-81.9336e-87.1381e-63.9446e-73.6400e-89.2850e-931.325
IMI GUHHN7.2755e-68.0842e-71.7805e-74.7145e-83.3163e-81.0762e-55.0715e-76.2132e-81.3609e-831.325
IMI GUHHE3.9812e-65.8962e-71.9184e-75.5036e-82.7669e-89.6197e-61.0532e-65.8782e-81.2127e-831.325
ESCA FRHHZ7.8463e-71.0871e-76.3977e-82.8411e-81.1961e-81.1724e-62.8330e-71.9618e-82.7885e-935.9301
ESCA FRHHN1.3215e-61.6244e-79.2454e-82.5183e-81.4459e-83.5354e-63.9333e-72.2893e-83.1735e-935.9301
ESCA FRHHE1.1929e-61.4136e-77.3921e-83.2198e-81.3602e-82.5417e-62.4758e-72.3856e-83.2329e-935.9301
SAOF FRHHZ5.0059e-75.9091e-83.4757e-81.5969e-88.1574e-91.0195e-62.3246e-71.2946e-81.5596e-939.4337
SAOF FRHHN8.4111e-78.4012e-83.9825e-81.8508e-89.0551e-91.1100e-62.8814e-71.5311e-81.8727e-939.4337
SAOF FRHHE6.6562e-76.7531e-83.0151e-81.6432e-81.1102e-89.3457e-71.2947e-71.5421e-82.1793e-939.4337
DNSP ITHNZ3.1429e-64.1528e-73.6185e-72.5374e-71.6019e-75.0100e-62.2821e-62.3135e-71.3864e-840.443
DNSP ITHNN3.5284e-64.7878e-73.3711e-72.9014e-71.6595e-77.5929e-62.0876e-62.1073e-71.4621e-840.443
DNSP ITHNE3.2354e-64.4418e-73.5403e-72.9870e-71.7161e-77.2943e-62.1587e-62.3854e-71.4761e-840.443
MGRO GUHHZ1.0345e-61.1432e-76.4536e-81.6735e-89.7250e-91.8737e-63.2502e-71.4393e-83.0304e-943.18
MGRO GUHHN1.3842e-61.8751e-77.3003e-81.9904e-81.2334e-83.0621e-64.1441e-72.0934e-83.6343e-943.18
MGRO GUHHE2.7110e-62.7957e-71.2349e-73.6760e-81.9616e-84.8826e-64.1578e-72.8716e-85.8367e-943.18
TURF FRHHZ1.6990e-61.7298e-73.3579e-81.3829e-88.1910e-97.9290e-71.9046e-71.1355e-81.3506e-944.7320
TURF FRHHN1.2260e-61.0524e-74.0857e-81.6247e-81.0158e-88.0606e-71.6960e-71.1214e-81.4915e-944.7320
TURF FRHHE8.4816e-78.5916e-83.1342e-81.5828e-81.0051e-89.9547e-71.4507e-71.1722e-81.9009e-944.7320
RORO GUHHZ1.4297e-61.3829e-76.2678e-81.5769e-89.4634e-91.7452e-62.5126e-71.8527e-83.0263e-956.328
RORO GUHHN1.3074e-61.5782e-77.3947e-81.8491e-81.0171e-83.1173e-63.3459e-71.7759e-83.6994e-956.328
RORO GUHHE1.2698e-61.5620e-77.4451e-81.7963e-88.9083e-92.8142e-62.6836e-71.4629e-83.1396e-956.328
GBOS GUHHZ9.9032e-71.3766e-75.9625e-82.6799e-81.4143e-82.6690e-63.5671e-71.6725e-83.6839e-964.67
GBOS GUHHN6.4776e-78.7818e-84.7065e-81.7794e-81.0728e-81.7494e-62.0732e-71.8011e-82.0142e-964.67
GBOS GUHHE8.7216e-71.5775e-78.9253e-84.2986e-81.8207e-82.8087e-64.2699e-72.1721e-83.4190e-964.67
ENR GUHHZ1.6059e-61.9803e-79.2614e-84.1106e-81.9914e-82.8713e-65.4873e-73.8152e-84.6222e-967.8338
ENR GUHHN5.3456e-64.2170e-71.2163e-74.6883e-82.3008e-84.0704e-64.9616e-73.8855e-88.4013e-967.8338
ENR GUHHE4.1733e-63.2756e-71.1498e-73.7417e-81.8580e-83.4939e-66.5613e-72.9080e-86.3372e-967.8338
STV GUHHZ7.3914e-78.2783e-83.3464e-81.1739e-86.8692e-91.2993e-61.6731e-79.4718e-91.5587e-972.4333
STV GUHHN8.4103e-78.3949e-83.1317e-81.1965e-86.8309e-91.3376e-61.3467e-79.4387e-91.7593e-972.4333
STV GUHHE1.0275e-61.0042e-73.7127e-81.4194e-87.4270e-91.0543e-62.2720e-71.0981e-81.9745e-972.4333
*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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