MANUAL Location - Area: Alpi Apuane , magnitude (ML): 0.8
2025-12-12 05:53:58 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-12-12 07:52:11

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Earthquake info - Manual location
Event - ID :251212055335
Magnitude (ML) :0.8 +/- 0.2
Origin Time :2025-12-12 05:53:58.875 (UTC)
Location : Latitude: 44.209 N, Longitude: 10.219 E
Area :Alpi Apuane
Depth (km) :11.33
Distances (km) : 2.3 --- Giuncugnano
3.5 --- Casola in Lunigiana
4.2 --- Minucciano
6.9 --- Piazza al Serchio
6.9 --- Sillano
8.2 --- Fivizzano
10.8 --- Camporgiano
11.1 --- San Romano in Garfagnana
11.6 --- Vagli Sotto
11.8 --- Comano
12.8 --- Careggine
15.2 --- Villa Collemandina
15.7 --- Ligonchio
15.7 --- Licciana Nardi
16.2 --- Collagna
16.6 --- Castiglione di Garfagnana
17.5 --- Pieve Fosciana
17.8 --- Fosdinovo
18.8 --- Castelnuovo di Garfagnana
19.0 --- Ortonovo

Quality location estimate: Erh: 0.8 km, Erz: 0.3 km, Nf: 28, Gap: 60 °, Rms: 0.30


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.
EQUIGU2025-12-12 05:54:02.0000.00700.470.052025-12-12 05:54:03.4600.03700.011.7013.6
FIVIGU2025-12-12 05:54:01.1370.0200-0.491.062025-12-12 05:54:02.7260.0400-0.860.3514.2
VLCMN2025-12-12 05:54:02.3300.0080-0.021.732025-12-12 05:54:04.4210.1002-0.500.9318.7
SARMGU2025-12-12 05:54:02.3600.0080-0.340.722025-12-12 05:54:04.7300.0421-0.800.3919.3
AULIT2025-12-12 05:54:03.0870.02000.011.772025-12-12 05:54:06.1070.04000.011.5522.6
ERBMIV2025-12-12 05:54:04.6600.0170-0.441.112025-12-12 05:54:08.9900.1494-0.850.4030.6
CMEIT2025-12-12 05:54:04.6520.0200-0.041.592025-12-12 05:54:08.5210.0400-0.460.9931.3
CARDGU2025-12-12 05:54:04.5550.02000.061.422025-12-12 05:54:08.6400.08920.001.2431.5
GSCLGU2025-12-12 05:54:05.6100.0200-0.421.062025-12-12 05:54:10.0400.0912-1.250.0435.5
GRAMGU2025-12-12 05:54:05.3800.02110.001.662025-12-12 05:54:10.1400.10030.270.4135.8
PLMAIV2025-12-12 05:54:05.4820.02000.041.562025-12-12 05:54:09.8300.1153-0.400.9035.9
MAIMGU2025-12-12 05:54:06.1790.0200-0.110.992025-12-12 05:54:11.2560.1002-0.520.8441.1
POPMGU2025-12-12 05:54:07.6000.11450.051.132025-12-12 05:54:13.7800.1364-0.200.9848.1
MSSAIV2025-12-12 05:54:08.8120.0200-0.510.922025-12-12 05:54:16.2870.0400-0.770.5058.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
EQUI GUHH0.602.08e-113.6228
FIVI GUHN1.035.31e-114.2295
VLC MNHH0.791.30e-118.7112
SARM GUEH0.902.67e-119.3101
ERBM IVEH0.665.47e-230.633
CME ITHN1.001.16e-131.3167
CARD GUHH0.776.75e-231.5134
GSCL GUHH0.958.08e-235.562
GRAM GUHH1.021.68e-135.8339
PLMA IVHH0.522.83e-235.9239
MAIM GUHH0.622.50e-241.1146
POPM GUHH0.644.41e-248.1113
MSSA IVHH0.347.29e-358.4282


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.
(°)
EQUI GUHHZ3.6593e-53.8156e-69.5613e-73.0303e-71.8148e-74.0336e-54.1910e-62.9967e-76.4798e-813.6228
EQUI GUHHN2.3819e-53.6028e-61.3613e-67.6964e-73.8324e-74.1851e-59.8889e-65.7300e-77.3007e-813.6228
EQUI GUHHE3.4828e-53.5023e-69.9953e-73.1365e-71.4803e-74.4222e-56.8461e-62.5110e-76.1132e-813.6228
FIVI GUHNZ1.7893e-41.8835e-54.2163e-61.0718e-65.5857e-71.4327e-41.3115e-51.0185e-62.1841e-714.2295
FIVI GUHNN5.0361e-58.5026e-64.5983e-61.4510e-67.6525e-71.3427e-41.9446e-51.1744e-62.1564e-714.2295
FIVI GUHNE6.4814e-51.0432e-54.4134e-61.0807e-66.7864e-72.5255e-42.1291e-51.1239e-62.1258e-714.2295
VLC MNHHZ8.3709e-61.0028e-64.9635e-71.3498e-76.7974e-81.6868e-51.8863e-61.0488e-72.2956e-818.7112
VLC MNHHN1.8134e-52.6511e-61.0786e-62.8113e-71.6570e-73.1148e-54.9950e-62.6980e-75.2745e-818.7112
VLC MNHHE1.2431e-51.5879e-66.6432e-72.0724e-71.2390e-72.7083e-52.5386e-61.9133e-73.3196e-818.7112
SARM GUEHZ1.3775e-52.3527e-61.3815e-65.2500e-72.5751e-74.7048e-57.6149e-63.6150e-75.7440e-819.3101
SARM GUEHN1.8912e-54.0962e-62.3074e-68.5758e-74.6345e-75.7040e-58.8306e-67.0773e-71.1517e-719.3101
SARM GUEHE1.8251e-52.7877e-61.4513e-63.8199e-72.2754e-73.6285e-58.3689e-63.3579e-76.2977e-819.3101
ERBM IVEHZ2.6471e-64.6271e-72.6225e-71.2280e-75.8889e-81.2591e-57.7632e-78.5915e-81.1680e-830.633
ERBM IVEHN3.2841e-67.6884e-75.0936e-71.7405e-79.6791e-81.1594e-51.6135e-61.3712e-72.0100e-830.633
ERBM IVEHE3.5011e-67.3587e-74.1611e-71.4509e-79.5393e-81.0794e-51.5615e-61.1881e-71.5353e-830.633
CME ITHNZ6.1958e-66.4320e-75.1571e-72.4053e-71.4531e-71.1437e-52.8728e-61.9684e-71.8282e-831.3167
CME ITHNN9.3533e-61.6498e-61.2669e-63.7311e-72.1201e-72.1839e-56.1859e-62.3807e-73.7952e-831.3167
CME ITHNE1.1177e-51.1973e-67.9160e-72.8346e-71.5170e-72.0255e-53.4843e-62.1242e-72.8204e-831.3167
CARD GUHHZ8.7411e-61.0675e-63.4176e-78.7626e-84.8408e-82.0847e-51.8363e-69.7636e-82.1951e-831.5134
CARD GUHHN1.5426e-51.8994e-67.0369e-71.5439e-78.4807e-82.2810e-52.6667e-61.5452e-73.1646e-831.5134
CARD GUHHE1.8037e-51.7948e-66.1482e-71.4472e-78.1833e-81.9449e-51.7776e-61.4229e-73.4770e-831.5134
GSCL GUHHZ1.1516e-62.8780e-71.9523e-76.5383e-83.4622e-83.9621e-61.1282e-64.3552e-88.6692e-935.562
GSCL GUHHN4.3657e-69.6643e-77.9567e-72.7945e-71.2716e-71.0856e-54.9896e-61.7688e-72.6096e-835.562
GSCL GUHHE1.8464e-66.0269e-74.8803e-71.8400e-79.3530e-84.9820e-62.3304e-61.3604e-71.6399e-835.562
GRAM GUHHZ8.0623e-61.0363e-66.5877e-71.4970e-79.2321e-81.7639e-53.0809e-61.3848e-72.6453e-835.8339
GRAM GUHHN1.2844e-52.3432e-61.5268e-63.7530e-71.9431e-73.5196e-58.7834e-63.0528e-75.9639e-835.8339
GRAM GUHHE8.5140e-62.1313e-61.4997e-63.6529e-71.9609e-72.3766e-59.2869e-62.8672e-74.9407e-835.8339
PLMA IVHHZ3.7704e-64.4216e-71.2633e-76.9014e-83.7334e-83.6574e-66.0953e-76.0855e-81.1473e-835.9239
PLMA IVHHN4.0771e-65.7814e-72.8198e-71.0651e-75.6796e-81.1117e-59.0762e-79.8948e-81.2667e-835.9239
PLMA IVHHE6.5515e-66.1787e-71.9991e-79.0950e-84.6693e-89.4274e-69.7956e-76.5700e-81.3001e-835.9239
MAIM GUHHZ1.4127e-61.9573e-71.2437e-74.9108e-82.1839e-84.6348e-67.6461e-73.1340e-84.2366e-941.1146
MAIM GUHHN1.9389e-62.3670e-72.0954e-71.0960e-74.7470e-85.4943e-61.0022e-65.8137e-88.2187e-941.1146
MAIM GUHHE1.6788e-62.7954e-71.7324e-78.9847e-86.0661e-85.1756e-69.6774e-78.3314e-87.8942e-941.1146
POPM GUHHZ2.1624e-63.9186e-72.0363e-76.6064e-82.7390e-87.1200e-61.2137e-64.1801e-88.3254e-948.1113
POPM GUHHN3.6590e-66.1632e-73.5133e-71.0803e-75.5005e-88.5871e-61.5445e-69.1174e-81.6895e-848.1113
POPM GUHHE3.0774e-65.2638e-74.0129e-71.1587e-76.1837e-87.9081e-61.9003e-68.7841e-81.2349e-848.1113
MSSA IVHHZ5.2235e-76.3953e-83.3741e-82.0651e-82.1134e-81.0362e-61.4686e-73.3908e-81.5889e-958.4282
MSSA IVHHN4.1157e-77.5944e-85.1437e-82.6128e-82.0570e-81.3045e-62.6649e-72.7721e-81.8140e-958.4282
MSSA IVHHE5.2648e-77.1142e-86.4345e-82.5093e-81.3853e-81.2859e-64.0931e-72.4114e-82.3004e-958.4282
*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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