MANUAL Location - Area: Alpi Graie , magnitude (ML): 0.4
2025-11-05 13:11:00 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-11-05 16:56:03

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Earthquake info - Manual location
Event - ID :251105130939
Magnitude (ML) :0.4 +/- 0.1
Origin Time :2025-11-05 13:11:00.073 (UTC)
Location : Latitude: 45.192 N, Longitude: 7.426 E
Area :Alpi Graie
Depth (km) :7.98
Distances (km) : 4.3 --- Val della Torre
5.4 --- Varisella
6.5 --- Givoletto
6.6 --- Viu
6.7 --- Vallo Torinese
6.7 --- Rubiana
7.2 --- La Cassa
8.2 --- Fiano
8.4 --- Almese
8.6 --- Germagnano
8.8 --- Villar Dora
8.8 --- Traves
9.4 --- Cafasse
10.0 --- San Gillio
10.3 --- Lanzo Torinese
10.4 --- Caselette
10.8 --- Caprie
11.0 --- Pessinetto
11.2 --- Robassomero
11.2 --- Lemie

Quality location estimate: Erh: 1.8 km, Erz: 1.8 km, Nf: 10, Gap: 185 °, Rms: 0.20


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.
LATOIV2025-11-05 13:11:03.5310.02000.281.152025-11-05 13:11:05.3960.0400-0.001.4114.8
RSPGU2025-11-05 13:11:03.6100.00900.271.142025-11-05 13:11:05.6200.04210.011.3916.4
LSDGU2025-11-05 13:11:07.5800.02010.320.962025-11-05 13:11:12.2430.14840.011.1238.9
BHBGU2025-11-05 13:11:07.6100.03610.011.362025-11-05 13:11:12.1260.0400-0.830.0942.5
RRLGU2025-11-05 13:11:10.5080.0200-0.081.082025-11-05 13:11:17.4020.3557-0.600.3159.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
RSP GUHH0.481.22e-116.4249
LSD GUHH0.371.77e-238.9323
BHB GUHH0.199.02e-342.5198
RRL GUHH0.486.56e-359.2239


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.
(°)
RSP GUHHZ1.4136e-51.5970e-65.0233e-71.1971e-77.2013e-82.8052e-51.8679e-61.3793e-72.9548e-816.4249
RSP GUHHN1.3498e-52.2641e-69.7776e-73.0162e-71.8538e-73.1743e-54.3236e-63.0405e-75.8140e-816.4249
RSP GUHHE1.6289e-52.1924e-68.4142e-72.1354e-71.3305e-74.9009e-52.7341e-62.4735e-75.1970e-816.4249
LSD GUHHZ2.2437e-62.1603e-79.4842e-83.6195e-81.7911e-82.3339e-63.4249e-73.0422e-85.6228e-938.9323
LSD GUHHN6.2605e-65.9642e-71.1708e-73.2692e-81.7672e-85.9620e-64.2035e-74.1450e-81.1885e-838.9323
LSD GUHHE3.0971e-63.1160e-71.3178e-73.8631e-81.9101e-82.6037e-66.2141e-73.1958e-85.7292e-938.9323
BHB GUHHZ9.8606e-71.2287e-77.0428e-85.0262e-82.4767e-81.8371e-62.5247e-74.5819e-82.8391e-942.5198
BHB GUHHN9.8121e-71.0493e-77.5609e-82.6001e-81.6266e-81.7177e-62.5997e-72.8622e-82.7394e-942.5198
BHB GUHHE9.5583e-71.1088e-77.3984e-84.0796e-84.0739e-82.1208e-62.5415e-79.8114e-85.1959e-942.5198
RRL GUHHZ4.1484e-75.3674e-83.2946e-81.5466e-87.8909e-98.3795e-71.7479e-71.2466e-81.3753e-959.2239
RRL GUHHN3.9143e-77.4842e-85.4465e-81.8075e-81.2465e-89.7589e-73.0372e-71.6731e-82.4626e-959.2239
RRL GUHHE3.3372e-78.0863e-85.9923e-81.7544e-89.2493e-91.0484e-65.0610e-71.5933e-81.6652e-959.2239
*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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