MANUAL Location - Area: Appennino modenese , magnitude (ML): 0.1
2025-09-05 01:37:57 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-05 08:48:30

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Earthquake info - Manual location
Event - ID :250905013730
Magnitude (ML) :0.1 +/- 0.2
Origin Time :2025-09-05 01:37:57.264 (UTC)
Location : Latitude: 44.301 N, Longitude: 10.979 E
Area :Appennino modenese
Depth (km) :6.03
Distances (km) : 2.9 --- Castel d Aiano
4.3 --- Montese
5.4 --- Zocca
10.8 --- Vergato
12.1 --- Gaggio Montano
12.2 --- Pavullo nel Frignano
12.6 --- Savigno
14.2 --- Guiglia
14.7 --- Grizzana Morandi
16.0 --- Porretta Terme
16.0 --- Castel di Casio
16.8 --- Lizzano in Belvedere
17.0 --- Camugnano
17.2 --- Castello di Serravalle
17.4 --- Marano sul Panaro
17.9 --- Fanano
18.2 --- Sestola
18.6 --- Marzabotto
19.7 --- Lama Mocogno
20.4 --- Vignola

Quality location estimate: Erh: 2 km, Erz: 2.3 km, Nf: 12, Gap: 214 °, 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.
ZCCAIV2025-09-05 01:37:59.7800.0100-0.011.952025-09-05 01:38:02.5180.30970.730.338.7
GSCLGU2025-09-05 01:38:03.0610.0200-1.130.082025-09-05 01:38:10.2460.04000.910.1632.3
POPMGU2025-09-05 01:38:03.8400.02310.021.942025-09-05 01:38:08.8200.10130.001.5934.1
SARMGU2025-09-05 01:38:06.3180.0200-0.131.232025-09-05 01:38:13.2270.1002-0.081.3448.4
VLCMN2025-09-05 01:38:06.8210.02000.141.272025-09-05 01:38:13.9000.29470.160.9850.2
CARDGU2025-09-05 01:38:05.7430.0200-0.900.082025-09-05 01:38:13.8800.23160.171.0550.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
ZCCA IVHH-0.051.04e-18.7358
GSCL GUHH-0.118.48e-332.3280
SARM GUEH0.107.37e-348.4254
VLC MNHH0.316.62e-350.2252


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.
(°)
ZCCA IVHHZ3.7240e-64.9023e-74.3381e-72.9559e-71.0924e-77.6576e-62.5761e-61.1846e-71.2154e-88.7358
ZCCA IVHHN4.2736e-66.7164e-76.0683e-74.1176e-71.2773e-79.7754e-63.0592e-61.4171e-71.7977e-88.7358
ZCCA IVHHE4.1203e-61.0282e-67.2629e-75.0933e-72.5634e-78.6722e-64.3900e-63.5056e-73.1279e-88.7358
GSCL GUHHZ1.8683e-72.9565e-82.5543e-81.5576e-89.5743e-93.2009e-71.2765e-71.0636e-88.8042e-1032.3280
GSCL GUHHN2.7101e-78.4698e-86.7808e-83.8914e-82.8401e-86.6094e-73.1234e-73.8013e-85.0184e-932.3280
GSCL GUHHE3.0817e-77.1530e-84.7817e-82.5187e-81.3147e-89.1671e-73.0591e-71.2800e-81.8326e-932.3280
POPM GUHHZ6.2732e-61.0557e-67.1484e-71.9639e-78.9017e-81.0664e-54.2275e-61.3104e-72.1539e-834.1212
POPM GUHHN8.2910e-62.0415e-61.4669e-64.1715e-71.9387e-72.1775e-58.3425e-62.8616e-75.0229e-834.1212
POPM GUHHE6.8555e-61.9306e-61.2571e-62.9569e-71.8709e-71.9434e-56.9315e-62.8601e-74.9863e-834.1212
SARM GUEHZ3.3023e-75.7584e-84.7416e-81.9458e-87.9425e-96.3681e-72.7069e-71.1338e-81.2887e-948.4254
SARM GUEHN5.6869e-79.5451e-86.0073e-83.7197e-81.7580e-81.1930e-62.0628e-71.7959e-82.1095e-948.4254
SARM GUEHE4.3702e-76.6315e-85.1441e-83.1894e-81.7160e-88.6971e-73.7770e-72.1248e-82.0096e-948.4254
VLC MNHHZ6.5952e-71.1195e-74.0131e-81.8424e-81.1380e-81.1421e-62.0889e-71.5419e-81.8670e-950.2252
VLC MNHHN5.4693e-78.7651e-85.0390e-82.0496e-81.3279e-81.0380e-62.6052e-71.8051e-82.3621e-950.2252
VLC MNHHE9.3081e-79.4484e-85.2464e-82.2002e-81.1500e-81.0392e-62.4278e-71.5980e-82.0083e-950.2252
CARD GUHHZ6.4881e-71.2478e-77.8905e-84.9978e-82.0753e-82.7831e-64.7858e-72.6223e-83.3378e-950.4233
CARD GUHHN2.0602e-62.6069e-71.8857e-79.7430e-84.8797e-85.4452e-61.0036e-67.5490e-88.7736e-950.4233
CARD GUHHE1.9192e-63.3695e-71.8049e-79.5100e-85.9421e-86.4107e-68.5027e-78.9636e-88.4514e-950.4233
*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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