MANUAL Location - Area: Appennino modenese , magnitude (ML): 1.2
2025-10-03 09:39:51 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-03 10:11:36

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Earthquake info - Manual location
Event - ID :251003093820
Magnitude (ML) :1.2 +/- 0.2
Origin Time :2025-10-03 09:39:51.918 (UTC)
Location : Latitude: 44.481 N, Longitude: 10.733 E
Area :Appennino modenese
Depth (km) :18.59
Distances (km) : 3.4 --- Castellarano
5.4 --- Prignano sulla Secchia
7.5 --- Serramazzoni
7.9 --- Sassuolo
9.2 --- Fiorano Modenese
10.5 --- Baiso
10.7 --- Casalgrande
11.5 --- Viano
11.8 --- Maranello
13.5 --- Scandiano
14.0 --- Formigine
15.0 --- Polinago
16.4 --- Montefiorino
16.9 --- Castelvetro di Modena
17.2 --- Carpineti
17.8 --- Toano
18.0 --- Pavullo nel Frignano
18.1 --- Castelnuovo Rangone
18.7 --- Albinea
18.7 --- Casina

Quality location estimate: Erh: 1.1 km, Erz: 1.1 km, Nf: 16, Gap: 215 °, 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.
GSCLGU2025-10-03 09:39:57.1400.0170-0.230.982025-10-03 09:40:01.3230.0842-0.051.4626.7
ZCCAIV2025-10-03 09:39:58.6400.01500.031.482025-10-03 09:40:03.8410.0400-0.001.4530.9
ERBMIV2025-10-03 09:39:58.3400.0150-0.280.792025-10-03 09:40:03.7380.09620.001.3932.8
SARMGU2025-10-03 09:39:59.7200.6089-0.750.352025-10-03 09:40:05.3260.2597-1.470.0346.6
VLCMN2025-10-03 09:40:01.0740.02000.200.792025-10-03 09:40:07.8100.25070.330.6749.0
BDIIV2025-10-03 09:40:01.3800.0251-0.121.392025-10-03 09:40:08.3400.1564-0.250.9451.6
POPMGU2025-10-03 09:40:01.5400.0251-0.061.492025-10-03 09:40:08.9700.15840.131.0552.1
GRAMGU2025-10-03 09:40:02.4000.02710.051.412025-10-03 09:40:10.4320.04000.440.3456.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
ZCCA IVHH1.473.49e-130.9127
ERBM IVEH1.452.96e-132.8255
SARM GUEH0.743.50e-246.6219
VLC MNHH1.104.25e-249.0218
BDI IVHH1.167.83e-251.6193
POPM GUHH1.071.00e-152.1178
GRAM GUHH1.211.06e-156.4271


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.
(°)
GSCL GUHHZ1.4753e-52.4018e-61.5169e-65.3813e-72.3045e-71.9641e-56.3590e-63.7542e-75.5073e-826.7219
GSCL GUHHN4.1598e-51.1496e-57.0853e-62.2693e-61.2089e-61.0702e-43.3530e-51.7783e-62.5293e-726.7219
GSCL GUHHE1.6710e-54.3752e-63.1784e-68.5604e-73.7045e-74.8156e-51.6047e-55.4377e-71.0890e-726.7219
ZCCA IVHHZ1.1969e-52.3358e-61.6966e-61.0934e-64.1918e-72.6710e-51.0589e-55.3063e-76.7602e-830.9127
ZCCA IVHHN9.8971e-61.7906e-62.2175e-61.3795e-65.8515e-71.2187e-51.9088e-57.5882e-77.9026e-830.9127
ZCCA IVHHE1.2535e-52.3579e-62.0747e-62.1459e-68.1652e-71.6540e-58.6376e-69.9286e-78.8254e-830.9127
ERBM IVEHZ9.0748e-61.4383e-67.4807e-73.2357e-72.2160e-73.1014e-53.3712e-62.6341e-73.5362e-832.8255
ERBM IVEHN1.7922e-54.2442e-62.5307e-65.5537e-73.2999e-75.1353e-57.2649e-65.4008e-71.0449e-732.8255
ERBM IVEHE1.3737e-54.0799e-62.1550e-65.8226e-73.2629e-74.7428e-51.0436e-54.5351e-79.7605e-832.8255
SARM GUEHZ1.5481e-62.2761e-71.8954e-78.9354e-83.1831e-83.3722e-61.1533e-64.5170e-86.6905e-946.6219
SARM GUEHN2.3019e-63.4846e-72.8950e-71.5516e-76.8492e-85.1917e-61.2710e-61.0255e-71.2232e-846.6219
SARM GUEHE2.1066e-62.3905e-71.8710e-71.0321e-74.7483e-82.3773e-61.1433e-66.8975e-86.3922e-946.6219
VLC MNHHZ1.6973e-62.9619e-72.1673e-76.3492e-83.8205e-84.1855e-61.0800e-65.1417e-87.3340e-949.0218
VLC MNHHN1.4089e-62.6472e-72.0557e-76.7642e-84.8309e-83.2078e-61.1226e-67.5798e-86.6857e-949.0218
VLC MNHHE1.8686e-64.6404e-73.5075e-71.4957e-79.2436e-84.2222e-62.4259e-61.3986e-71.3167e-849.0218
BDI IVHHZ3.9029e-64.2590e-73.4285e-71.3753e-76.1798e-87.6428e-62.1012e-66.7038e-89.3903e-951.6193
BDI IVHHN2.7975e-67.7430e-76.2481e-72.4813e-71.3739e-71.3212e-54.3570e-62.0470e-72.2152e-851.6193
BDI IVHHE2.8312e-68.3050e-77.1865e-72.9207e-71.2758e-71.1786e-55.6326e-61.4479e-72.0138e-851.6193
POPM GUHHZ3.6076e-65.5700e-73.6925e-71.4123e-75.7392e-81.3129e-51.9116e-67.7675e-81.0488e-852.1178
POPM GUHHN3.5324e-61.0402e-68.2554e-72.9198e-71.4071e-71.0539e-55.2039e-61.9369e-73.0509e-852.1178
POPM GUHHE3.8272e-61.0245e-68.1614e-72.4708e-71.1121e-79.0407e-66.1120e-61.6391e-72.6195e-852.1178
GRAM GUHHZ6.6018e-66.0200e-74.7327e-72.0423e-79.4344e-85.4013e-61.5685e-61.1596e-71.6613e-856.4271
GRAM GUHHN6.7363e-68.9886e-78.7785e-75.0908e-71.9094e-75.8995e-65.8232e-62.2649e-73.0481e-856.4271
GRAM GUHHE4.0268e-68.5566e-78.5567e-74.1783e-71.3147e-74.9344e-65.8960e-61.7194e-72.5927e-856.4271
*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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