MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.5
2025-08-28 15:47:02 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-29 08:38:38

RSNI Logo

Earthquake info - Manual location
Event - ID :250828154618
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2025-08-28 15:47:02.092 (UTC)
Location : Latitude: 44.268 N, Longitude: 7.405 E
Area :Alpi Marittime
Depth (km) :13.23
Distances (km) : 1.4 --- Valdieri
2.9 --- Entracque
4.0 --- Roaschia
6.1 --- Moiola
7.7 --- Gaiola
8.1 --- Roccavione
8.4 --- Valloriate
8.8 --- Roccasparvera
9.1 --- Robilante
9.4 --- Rittana
9.8 --- Borgo San Dalmazzo
10.2 --- Demonte
10.6 --- Vernante
11.6 --- Vignolo
13.4 --- Bernezzo
13.6 --- Boves
13.9 --- Cervasca
15.5 --- Limone Piemonte
15.7 --- Aisone
16.2 --- Valgrana

Quality location estimate: Erh: 1.2 km, Erz: 0.9 km, Nf: 30, Gap: 135 °, Rms: 0.32


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.
ENRGU2025-08-28 15:47:04.9600.0060-0.031.422025-08-28 15:47:06.6300.0340-0.371.4215.0
STVGU2025-08-28 15:47:05.0700.01200.001.482025-08-28 15:47:06.7390.0400-0.381.4315.7
VINDIV2025-08-28 15:47:06.5170.02000.041.332025-08-28 15:47:09.0070.0400-0.461.2923.0
ISOFR2025-08-28 15:47:08.5000.01600.290.372025-08-28 15:47:12.0600.1183-0.301.1932.9
TURFFR2025-08-28 15:47:08.9000.10350.041.152025-08-28 15:47:13.0800.1895-0.600.8435.1
SAOFFR2025-08-28 15:47:09.2430.02000.260.452025-08-28 15:47:13.3650.0400-0.471.1936.1
GBOSGU2025-08-28 15:47:08.9300.01800.021.372025-08-28 15:47:13.4400.1073-0.091.1537.5
PZZGU2025-08-28 15:47:08.8000.0200-0.431.372025-08-28 15:47:13.3440.1203-0.940.3138.1
MLIGIV2025-08-28 15:47:09.5630.0200-0.311.182025-08-28 15:47:14.3670.0400-1.040.2240.4
MGROGU2025-08-28 15:47:09.7100.0884-0.550.942025-08-28 15:47:14.3800.4369-1.680.0743.4
MVIFFR2025-08-28 15:47:11.1180.0200-0.011.302025-08-28 15:47:16.9500.1394-0.720.6347.8
ESCAFR2025-08-28 15:47:11.3890.0200-0.011.292025-08-28 15:47:17.5600.2957-0.381.0150.5
SURFFR2025-08-28 15:47:11.6500.0281-0.371.312025-08-28 15:47:18.3900.4208-0.690.7054.3
ROROGU2025-08-28 15:47:12.1810.0200-0.121.072025-08-28 15:47:18.8300.1755-0.530.9457.1
IMIGU2025-08-28 15:47:12.4790.02000.200.662025-08-28 15:47:18.9630.1655-0.550.9257.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
ENR GUHH0.894.70e-115.0166
TURF FRHH0.241.59e-235.1182
SAOF FRHH0.171.28e-236.1159
GBOS GUHH0.732.23e-237.595
PZZ GUHH0.262.43e-238.1319
MGRO GUHH0.271.14e-243.4128
ESCA FRHH0.491.38e-250.5183
RORO GUHH0.581.31e-257.1108
IMI GUHH0.601.85e-257.4135


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.
(°)
ENR GUHHZ3.0443e-53.6317e-69.0007e-72.4495e-71.6784e-76.9241e-52.9059e-63.2378e-77.2420e-815.0166
ENR GUHHN1.8198e-41.6215e-52.0752e-68.2820e-75.5023e-71.2499e-49.1965e-61.2941e-62.7520e-715.0166
ENR GUHHE1.4843e-41.2671e-53.1963e-68.3891e-74.6340e-71.1590e-41.1091e-59.2014e-72.6464e-715.0166
STV GUHHZ2.2938e-52.5943e-65.0649e-71.4238e-77.9934e-82.1380e-52.2988e-61.5534e-74.3387e-815.7249
STV GUHHN8.7287e-58.1164e-61.6348e-66.3532e-74.0294e-78.3902e-57.0493e-68.0889e-72.0020e-715.7249
STV GUHHE6.3462e-57.1918e-61.4633e-65.5378e-73.5463e-77.7277e-55.2078e-66.5666e-71.3430e-715.7249
ISO FRHHZ1.3121e-61.9185e-71.0141e-73.6537e-82.2844e-82.3443e-65.4256e-74.1877e-85.2019e-932.9252
ISO FRHHN2.9929e-63.8582e-79.6729e-83.4881e-81.7291e-85.0766e-64.6108e-72.8626e-88.3046e-932.9252
ISO FRHHE2.0930e-62.9487e-79.2081e-82.4550e-81.7521e-84.3981e-63.6509e-72.9357e-85.4625e-932.9252
TURF FRHHZ1.3090e-61.4919e-75.4912e-84.6218e-88.4292e-82.3128e-62.8888e-71.6161e-71.8451e-835.1182
TURF FRHHN1.3954e-61.7101e-78.7550e-82.9667e-81.9302e-83.8036e-63.8882e-72.8151e-84.1972e-935.1182
TURF FRHHE1.2168e-62.0736e-71.1581e-74.4354e-82.6783e-82.5459e-67.6825e-74.2957e-86.2503e-935.1182
SAOF FRHHZ7.8843e-71.1446e-74.3694e-82.2434e-82.1484e-81.8798e-61.6174e-72.3743e-82.8701e-936.1159
SAOF FRHHN8.6330e-71.4231e-75.9207e-84.2737e-87.1618e-82.6476e-62.7092e-71.1325e-72.1767e-836.1159
SAOF FRHHE7.5708e-71.0071e-73.8844e-82.4536e-81.6906e-81.3731e-62.4849e-72.0756e-82.9072e-936.1159
GBOS GUHHZ2.7643e-64.0406e-71.8279e-75.9013e-83.5570e-81.0167e-56.5712e-76.4953e-81.0804e-837.595
GBOS GUHHN2.3281e-63.1194e-71.7955e-76.5635e-82.5736e-85.9642e-66.3649e-73.7762e-87.5443e-937.595
GBOS GUHHE3.0558e-64.4889e-71.9802e-76.2665e-82.8111e-89.9490e-69.7506e-74.5724e-89.3274e-937.595
PZZ GUHHZ3.3891e-64.6229e-72.0525e-75.7577e-82.8681e-88.1989e-68.3044e-74.6528e-89.6300e-938.1319
PZZ GUHHN2.2718e-64.1441e-72.3230e-77.6900e-83.2390e-86.3352e-69.4967e-74.7469e-88.3366e-938.1319
PZZ GUHHE2.0838e-63.8895e-72.1158e-76.4113e-83.1058e-85.4103e-61.0657e-64.2630e-87.9674e-938.1319
MGRO GUHHZ9.0386e-71.0722e-76.4549e-84.0659e-82.1039e-81.6818e-62.5205e-73.6952e-84.2292e-943.4128
MGRO GUHHN1.4203e-61.8778e-78.5850e-83.2113e-82.7519e-82.0111e-64.3794e-74.3557e-84.3037e-943.4128
MGRO GUHHE1.2063e-61.7028e-79.5372e-83.3710e-82.1761e-82.4300e-65.0089e-73.6915e-84.9440e-943.4128
ESCA FRHHZ1.0806e-61.4414e-76.0028e-82.5546e-82.1837e-81.4916e-62.6993e-72.8475e-83.4422e-950.5183
ESCA FRHHN1.7913e-61.9070e-78.8164e-83.0964e-82.1411e-84.0026e-64.1142e-73.3433e-83.9027e-950.5183
ESCA FRHHE1.1959e-62.0273e-71.3365e-74.7336e-82.8058e-83.1926e-65.4490e-73.5667e-85.5916e-950.5183
RORO GUHHZ1.3550e-61.8277e-79.6916e-82.8254e-82.0888e-83.6684e-64.2348e-73.0330e-84.7380e-957.1108
RORO GUHHN1.9536e-62.3499e-71.1844e-74.1174e-82.2404e-84.1962e-66.4641e-72.5592e-85.3432e-957.1108
RORO GUHHE1.7588e-62.3583e-78.7018e-82.3672e-81.9980e-82.9291e-63.5623e-72.5859e-84.3345e-957.1108
IMI GUHHZ1.2316e-61.9410e-78.2711e-86.1105e-88.2813e-82.0471e-63.7540e-71.5961e-72.3777e-857.4135
IMI GUHHN3.3737e-63.8848e-71.6779e-77.7301e-83.9290e-87.1186e-67.2613e-75.0630e-88.9475e-957.4135
IMI GUHHE2.8717e-62.9960e-71.0966e-74.1030e-82.9279e-83.8081e-64.6499e-73.7111e-86.3694e-957.4135
*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