MANUAL Location - Area: Riviera di ponente , magnitude (ML): 0.6
2025-08-27 01:10:43 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-27 09:07:29

RSNI Logo

Earthquake info - Manual location
Event - ID :250827011023
Magnitude (ML) :0.6 +/- 0.2
Origin Time :2025-08-27 01:10:43.74 (UTC)
Location : Latitude: 44.169 N, Longitude: 8.253 E
Area :Riviera di ponente
Depth (km) :6.01
Distances (km) : 0.9 --- Giustenice
1.5 --- Tovo San Giacomo
2.8 --- Magliolo
3.1 --- Pietra Ligure
4.1 --- Borgio Verezzi
4.4 --- Loano
4.5 --- Boissano
5.3 --- Calice Ligure
5.8 --- Toirano
6.6 --- Borghetto Santo Spirito
6.6 --- Rialto
7.4 --- Finale Ligure
8.0 --- Balestrino
8.2 --- Orco Feglino
8.5 --- Ceriale
9.8 --- Bardineto
11.1 --- Vezzi Portio
11.7 --- Castelvecchio di Rocca Barbena
12.4 --- Erli
12.4 --- Cisano sul Neva

Quality location estimate: Erh: 1.8 km, Erz: 1.7 km, Nf: 28, Gap: 179 °, 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.
ROROGU2025-08-27 01:10:47.3600.00900.151.352025-08-27 01:10:49.5690.0491-0.081.6817.4
QLNOIV2025-08-27 01:10:47.6200.0080-0.580.302025-08-27 01:10:49.9540.1002-1.420.0119.9
PVTIT2025-08-27 01:10:49.5170.02000.041.912025-08-27 01:10:53.4120.0400-0.290.6530.6
DNSPIT2025-08-27 01:10:49.4490.0200-0.021.922025-08-27 01:10:53.8170.04000.181.3231.0
GBOSGU2025-08-27 01:10:50.2100.02000.260.742025-08-27 01:10:54.2730.04000.051.7834.6
MGROGU2025-08-27 01:10:50.8930.0200-0.191.052025-08-27 01:10:55.7490.1063-0.710.2839.0
IMIGU2025-08-27 01:10:51.2500.02000.101.712025-08-27 01:10:56.1900.5729-0.470.6641.2
PCPGU2025-08-27 01:10:52.1500.0271-0.031.862025-08-27 01:10:58.1200.1504-0.131.3047.9
MLIGIV2025-08-27 01:10:52.9520.0200-0.061.762025-08-27 01:10:59.1390.0400-0.710.2950.1
SAOFFR2025-08-27 01:10:54.4670.1205-0.061.572025-08-27 01:11:02.3190.26170.001.1859.7
ENRGU2025-08-27 01:10:55.5120.02000.011.792025-08-27 01:11:04.3510.04000.760.2267.3
BURYGU2025-08-27 01:10:57.6680.02001.760.002025-08-27 01:11:07.6460.04002.950.0070.6
TURFFR2025-08-27 01:10:57.4100.02000.560.322025-08-27 01:11:06.0920.0400-0.081.3472.3
BHBGU2025-08-27 01:11:02.2490.02000.560.382025-08-27 01:11:14.6750.04000.490.63108.1


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
RORO GUHH0.802.17e-117.4247
QLNO IVHH0.416.83e-219.923
PVT ITHN0.827.99e-230.6242
DNSP ITHN0.624.91e-231.0209
GBOS GUHH0.762.81e-234.6284
ENR GUHH0.741.86e-267.3276
BURY GUHH0.294.36e-370.6233
TURF FRHH0.173.07e-372.3253
BHB GUHH0.794.70e-3108.1314


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.
(°)
RORO GUHHZ2.9869e-52.7073e-65.0664e-71.6395e-71.0378e-74.1938e-51.8838e-62.3138e-75.5064e-817.4247
RORO GUHHN3.5985e-54.5584e-61.3585e-63.8983e-72.4659e-77.7786e-54.8707e-64.4849e-79.2405e-817.4247
RORO GUHHE2.7794e-54.1117e-69.9123e-72.8757e-71.8137e-77.0697e-53.1539e-63.5066e-78.0829e-817.4247
QLNO IVHHZ7.8701e-68.0018e-72.1353e-76.1852e-82.9106e-85.3821e-61.1203e-65.7412e-81.5543e-819.923
QLNO IVHHN9.7781e-69.6336e-72.8462e-77.2729e-83.9833e-81.0274e-51.1262e-68.4370e-82.0068e-819.923
QLNO IVHHE1.7972e-51.7003e-64.7959e-71.6277e-79.0314e-81.3837e-52.1929e-61.4344e-73.0347e-819.923
PVT ITHNZ6.5543e-68.5946e-73.6865e-73.3723e-71.5907e-78.6070e-61.8189e-62.2562e-72.0962e-830.6242
PVT ITHNN1.2799e-51.2016e-64.1808e-74.4815e-74.3952e-71.9840e-51.7688e-67.6443e-74.8363e-830.6242
PVT ITHNE1.2561e-51.1598e-64.3459e-72.9042e-71.7270e-79.9482e-62.2867e-62.0475e-72.5912e-830.6242
DNSP ITHNZ3.3069e-64.8308e-74.1502e-73.3499e-71.6610e-74.5610e-61.9786e-62.5473e-71.7651e-831.0209
DNSP ITHNN2.7103e-64.1643e-73.4978e-73.3606e-72.2481e-75.4659e-61.8991e-62.7818e-71.5904e-831.0209
DNSP ITHNE2.7943e-64.1355e-73.6270e-72.9968e-71.4202e-75.9081e-61.9163e-61.8509e-71.3809e-831.0209
GBOS GUHHZ1.4308e-61.9420e-77.2955e-82.7219e-81.1731e-83.9140e-62.8620e-71.7059e-83.7630e-934.6284
GBOS GUHHN1.7875e-62.2116e-71.9492e-71.3451e-76.4138e-83.5001e-61.1789e-68.8002e-89.4703e-934.6284
GBOS GUHHE1.2443e-61.5383e-76.1438e-82.4008e-81.0126e-82.8524e-62.7986e-71.6162e-82.7632e-934.6284
MGRO GUHHZ6.5841e-78.3645e-86.5185e-82.7701e-81.1033e-81.7895e-63.3228e-71.6558e-82.4635e-939.0249
MGRO GUHHN1.1979e-61.8467e-78.2498e-82.3699e-81.2121e-83.5779e-65.8419e-72.1057e-84.0641e-939.0249
MGRO GUHHE1.0522e-61.8946e-78.8267e-82.8006e-81.5125e-82.5132e-64.1314e-72.3043e-83.9275e-939.0249
IMI GUHHZ6.5418e-77.5844e-84.7820e-82.0900e-81.1433e-81.4462e-62.2240e-71.9791e-82.3014e-941.2225
IMI GUHHN1.8018e-62.3137e-79.7206e-83.1340e-81.3361e-82.9698e-63.8266e-72.2713e-84.8985e-941.2225
IMI GUHHE1.0026e-61.6083e-77.9938e-82.8854e-81.4848e-82.8000e-63.0000e-71.8107e-83.3396e-941.2225
PCP GUHHZ2.3760e-62.1382e-75.8817e-81.7739e-81.2106e-83.2940e-62.7235e-72.1971e-84.1401e-947.929
PCP GUHHN1.4405e-61.5139e-74.6582e-81.4109e-87.5731e-92.0759e-61.9703e-71.1984e-82.7646e-947.929
PCP GUHHE1.8117e-61.7571e-75.6496e-81.7800e-89.7154e-92.5791e-62.1822e-71.4832e-83.0557e-947.929
SAOF FRHHZ1.5492e-72.1498e-81.8431e-89.8244e-95.2514e-94.2759e-79.9585e-86.9936e-97.2529e-1059.7250
SAOF FRHHN2.6279e-73.2029e-81.9523e-81.3593e-88.9124e-94.6459e-71.1803e-71.0447e-89.5911e-1059.7250
SAOF FRHHE2.4681e-73.2668e-81.9349e-81.2555e-89.3167e-94.3435e-79.7557e-81.2828e-89.1211e-1059.7250
ENR GUHHZ1.7097e-62.5633e-79.6088e-83.1653e-82.5401e-83.4082e-63.4584e-74.4584e-85.6354e-967.3276
ENR GUHHN3.6781e-63.8848e-71.3357e-74.1334e-82.3441e-87.2162e-64.7037e-74.9066e-88.7504e-967.3276
ENR GUHHE3.6126e-63.7225e-79.3000e-82.9569e-81.6921e-85.1556e-64.1761e-72.7615e-86.7849e-967.3276
BURY GUHHZ8.9575e-71.0401e-74.2527e-82.4936e-81.1840e-89.6077e-73.3943e-71.5403e-81.8471e-970.6233
BURY GUHHN6.9659e-78.0111e-83.8230e-82.5339e-81.4505e-81.1194e-62.0392e-71.9406e-81.8848e-970.6233
BURY GUHHE6.3552e-77.2789e-83.6883e-81.7507e-81.0170e-81.3203e-62.0951e-71.3524e-81.5174e-970.6233
TURF FRHHZ2.2700e-72.4747e-81.5100e-88.1824e-96.9594e-94.4475e-77.2823e-81.0391e-87.3442e-1072.3253
TURF FRHHN4.8452e-76.8252e-82.9359e-81.0758e-87.6445e-99.9185e-71.1700e-71.2903e-81.6046e-972.3253
TURF FRHHE3.1774e-73.6909e-82.2584e-81.0280e-87.2635e-98.3879e-77.5998e-81.1633e-89.7209e-1072.3253
BHB GUHHZ4.2149e-76.7122e-82.3155e-81.5335e-85.4269e-95.8512e-78.6783e-87.4373e-99.0763e-10108.1314
BHB GUHHN2.1996e-73.3254e-82.2737e-81.4258e-85.1377e-94.4610e-71.0737e-77.0571e-98.7211e-10108.1314
BHB GUHHE2.4598e-74.0679e-83.3778e-82.4151e-88.8624e-96.0796e-71.1776e-71.1586e-81.4937e-9108.1314
*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