MANUAL Location - Area: Alpi Graie , magnitude (ML): 0.4
2025-09-26 05:48:48 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-26 06:26:06

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Earthquake info - Manual location
Event - ID :250926054823
Magnitude (ML) :0.4 +/- 0.2
Origin Time :2025-09-26 05:48:48.788 (UTC)
Location : Latitude: 45.537 N, Longitude: 7.450 E
Area :Alpi Graie
Depth (km) :5.35
Distances (km) : 7.9 --- Valprato Soana
8.5 --- Ronco Canavese
10.8 --- Cogne
12.2 --- Ingria
12.2 --- Ribordone
13.2 --- Locana
14.0 --- Noasca
15.3 --- Sparone
16.4 --- Frassinetto
16.5 --- Champorcher
17.2 --- Pont-Canavese
17.3 --- Alpette
19.7 --- Valsavarenche
20.0 --- Pontboset
20.3 --- Ceresole Reale
20.8 --- Chiesanuova
20.9 --- Chialamberto
21.1 --- Canischio
21.5 --- San Colombano Belmonte
21.6 --- Saint-Marcel

Quality location estimate: Erh: 1 km, Erz: 1.9 km, Nf: 16, Gap: 126 °, Rms: 0.25


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.
CIROGU2025-09-26 05:48:52.8800.05820.500.732025-09-26 05:48:54.7290.0400-0.001.6214.1
LATOIV2025-09-26 05:48:54.0550.1807-0.200.812025-09-26 05:48:57.8410.04000.061.4726.8
LSDGU2025-09-26 05:48:54.3200.0160-0.011.632025-09-26 05:48:57.0000.0772-0.970.0027.2
MRGEIV2025-09-26 05:48:56.8620.02000.340.912025-09-26 05:49:01.7990.04000.181.2240.4
REMYGU2025-09-26 05:48:57.2420.02000.450.872025-09-26 05:49:02.1430.0400-0.021.3641.2
SATIGU2025-09-26 05:48:59.2500.02000.710.252025-09-26 05:49:05.6790.10020.560.7150.4
DIXCH2025-09-26 05:48:59.8850.02000.041.482025-09-26 05:49:07.4490.0400-0.140.9761.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
LSD GUHH0.303.02e-227.2251
MRGE IVHH0.401.49e-240.4311
REMY GUHH0.231.14e-241.2326
SATI GUHH0.591.01e-250.441
DIX CHHH0.671.41e-261.0357


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.
(°)
CIRO GUHHZ5.8250e-64.9007e-71.0414e-73.9142e-81.9744e-83.3761e-64.2300e-73.5578e-86.6926e-914.152
CIRO GUHHN5.2743e-64.1655e-78.3698e-82.9009e-81.8349e-84.6408e-64.1256e-73.4621e-87.5480e-914.152
CIRO GUHHE5.8116e-65.3528e-71.0011e-73.6352e-81.6406e-83.4622e-64.0199e-73.0706e-87.3293e-914.152
LSD GUHHZ3.8784e-65.0001e-71.4465e-74.6214e-82.4430e-86.8804e-64.8552e-73.7814e-87.6331e-927.2251
LSD GUHHN9.8037e-61.0011e-61.7490e-75.7868e-83.5515e-81.1791e-55.2600e-77.8078e-82.2291e-827.2251
LSD GUHHE5.1776e-64.8019e-71.5424e-75.6308e-82.5040e-86.1876e-68.8083e-74.5234e-88.7975e-927.2251
MRGE IVHHZ2.0207e-62.1566e-74.6742e-82.0927e-88.8592e-92.0272e-62.0469e-71.7001e-83.6977e-940.4311
MRGE IVHHN5.5412e-65.3533e-78.6930e-83.3324e-81.7860e-85.0776e-62.7065e-74.0522e-81.0378e-840.4311
MRGE IVHHE4.0175e-63.3008e-75.9665e-82.7330e-81.3841e-82.2603e-62.8238e-71.9616e-85.6225e-940.4311
REMY GUHHZ9.2444e-71.1713e-76.0436e-83.6624e-81.3495e-81.1791e-63.9130e-71.6555e-82.9298e-941.2326
REMY GUHHN1.2788e-61.8282e-79.7228e-85.5257e-82.5114e-82.5376e-63.9902e-73.8205e-84.3970e-941.2326
REMY GUHHE1.1256e-61.5885e-78.7489e-84.3998e-81.8851e-82.8909e-62.7189e-72.5832e-83.7368e-941.2326
SATI GUHHZ1.3873e-61.4758e-74.4271e-81.3401e-88.5075e-92.4879e-61.9137e-71.1225e-82.8145e-950.441
SATI GUHHN2.5596e-62.7154e-76.1660e-82.1535e-81.1160e-83.8501e-63.3382e-71.8210e-84.1164e-950.441
SATI GUHHE3.1471e-63.2039e-77.4168e-82.6327e-81.4167e-85.2543e-62.7548e-72.4095e-85.8139e-950.441
DIX CHHHZ2.4683e-62.1788e-79.2759e-83.2801e-82.1283e-82.6671e-64.5864e-73.6757e-85.3293e-961.0357
DIX CHHHN3.0672e-62.8737e-71.2585e-75.6679e-82.9795e-84.0493e-67.5536e-74.1757e-86.5397e-961.0357
DIX CHHHE3.1660e-63.1897e-71.3093e-74.9300e-81.9082e-85.1943e-65.6635e-73.0803e-87.1572e-961.0357
*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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