MANUAL Location - Area: Alpi Apuane , magnitude (ML): 0.3
2025-11-12 21:31:47 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-11-13 08:04:35

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Earthquake info - Manual location
Event - ID :251112213021
Magnitude (ML) :0.3 +/- 0.2
Origin Time :2025-11-12 21:31:47.124 (UTC)
Location : Latitude: 43.947 N, Longitude: 10.469 E
Area :Alpi Apuane
Depth (km) :3.45
Distances (km) : 5.1 --- Pescaglia
6.6 --- Fabbriche di Vallico
7.2 --- Borgo a Mozzano
11.7 --- Lucca
12.0 --- Bagni di Lucca
13.1 --- Gallicano
13.2 --- Massarosa
13.2 --- Camaiore
13.5 --- Vergemoli
13.8 --- Coreglia Antelminelli
14.2 --- Capannori
14.2 --- Barga
14.3 --- Villa Basilica
14.7 --- Molazzana
15.0 --- Stazzema
16.9 --- Porcari
18.5 --- Pescia
18.8 --- Castelnuovo di Garfagnana
18.9 --- Fosciandora
18.9 --- Pietrasanta

Quality location estimate: Erh: 0.5 km, Erz: 0.3 km, Nf: 20, Gap: 104 °, Rms: 0.14


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.
MAIMGU2025-11-12 21:31:48.6700.00300.041.692025-11-12 21:31:49.2990.0200-0.460.455.6
CARDGU2025-11-12 21:31:49.2400.0050-0.021.782025-11-12 21:31:50.5580.0712-0.270.479.6
CMEIT2025-11-12 21:31:50.0750.02000.011.792025-11-12 21:31:52.2420.04000.011.6814.0
BDIIV2025-11-12 21:31:50.6700.0090-0.021.762025-11-12 21:31:52.9000.0541-0.440.5117.0
VLCMN2025-11-12 21:31:51.9330.02000.011.802025-11-12 21:31:55.5690.04000.101.0124.8
PIIIV2025-11-12 21:31:52.0980.0401-0.340.552025-11-12 21:31:55.3250.1002-1.100.0225.6
POPMGU2025-11-12 21:31:52.1200.0140-0.001.822025-11-12 21:31:55.9100.08120.031.2025.8
SARMGU2025-11-12 21:31:52.3440.0200-0.021.692025-11-12 21:31:56.7280.04000.490.0327.3
EQUIGU2025-11-12 21:31:54.0120.02000.270.152025-11-12 21:31:58.4490.2096-0.150.8235.3
GSCLGU2025-11-12 21:31:55.8750.0200-0.340.542025-11-12 21:32:02.1700.2056-0.640.2646.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MAIM GUHH0.233.79e-15.6154
CARD GUHH0.342.11e-19.67
CME ITHN0.662.29e-114.0274
BDI IVHH0.136.07e-217.039
POPM GUHH0.043.73e-225.865
EQUI GUHH0.131.22e-235.3314


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.
(°)
MAIM GUHHZ2.4385e-52.8311e-61.3997e-67.1366e-73.8789e-74.2098e-58.6644e-65.4857e-76.5131e-85.6154
MAIM GUHHN3.4155e-55.1050e-62.6038e-69.1737e-75.0538e-78.0904e-51.2258e-58.1501e-71.3416e-75.6154
MAIM GUHHE2.5060e-53.7355e-62.7927e-69.9792e-75.4671e-77.4120e-51.5547e-58.1508e-71.1980e-75.6154
CARD GUHHZ7.6802e-69.6615e-75.5948e-72.9115e-71.2225e-71.6108e-52.2360e-61.7367e-72.4516e-89.67
CARD GUHHN2.5271e-53.0262e-61.8270e-64.1701e-72.1304e-74.6018e-59.5053e-63.8326e-77.3485e-89.67
CARD GUHHE2.1695e-53.2817e-61.5783e-65.0829e-72.5444e-74.2870e-58.8484e-63.5406e-76.3848e-89.67
CME ITHNZ1.4800e-52.3160e-61.0229e-63.5638e-72.2289e-72.0318e-54.2534e-64.2633e-75.3758e-814.0274
CME ITHNN2.4411e-53.2769e-62.1294e-65.5870e-73.1114e-71.9276e-51.0924e-54.8100e-77.9005e-814.0274
CME ITHNE2.1851e-53.0721e-61.4801e-65.6971e-72.6715e-72.7428e-57.5607e-64.2236e-76.3926e-814.0274
BDI IVHHZ2.4505e-63.7897e-72.0258e-77.1294e-83.5491e-84.1754e-61.2112e-65.0624e-88.7722e-917.039
BDI IVHHN2.6460e-65.0431e-75.3707e-71.7685e-78.1251e-89.9946e-64.6992e-61.2086e-71.6650e-817.039
BDI IVHHE3.3585e-65.5508e-73.2845e-71.4165e-76.1587e-87.6331e-61.7442e-68.6222e-81.4164e-817.039
VLC MNHHZ1.9928e-62.4716e-77.0601e-83.5701e-82.1322e-81.9796e-62.5412e-72.6805e-84.1560e-924.8344
VLC MNHHN1.8429e-62.0693e-78.8351e-84.2926e-82.7020e-84.2387e-63.4829e-73.3190e-83.8364e-924.8344
VLC MNHHE1.4224e-61.7103e-78.6904e-83.5998e-82.4089e-82.9177e-63.9334e-72.7646e-84.0685e-924.8344
PII IVHHZ1.6615e-61.9628e-71.1800e-74.8152e-82.1999e-82.1786e-65.3780e-72.7659e-85.2523e-925.6170
PII IVHHN1.1614e-61.8594e-71.1316e-73.4547e-81.3644e-83.3143e-65.6498e-71.9585e-83.8965e-925.6170
PII IVHHE1.5497e-62.4873e-71.4902e-74.5106e-82.4254e-84.7866e-66.3781e-73.4868e-85.4145e-925.6170
POPM GUHHZ1.3926e-62.5577e-71.6868e-77.1536e-84.0054e-84.5339e-68.7965e-76.1970e-86.1629e-925.865
POPM GUHHN2.2703e-64.9179e-73.5437e-78.4414e-85.0456e-86.3888e-61.7159e-67.4067e-81.2659e-825.865
POPM GUHHE1.7547e-63.1575e-72.7163e-79.4940e-85.1220e-83.1430e-61.6715e-67.2487e-89.7683e-925.865
SARM GUEHZ5.4901e-77.1467e-84.5093e-82.4113e-81.3781e-81.1749e-62.2143e-71.6774e-82.0258e-927.3348
SARM GUEHN7.0035e-71.0664e-78.3158e-86.5824e-82.9733e-82.5228e-64.1743e-73.7854e-82.9595e-927.3348
SARM GUEHE6.7086e-79.7393e-85.0544e-83.9126e-82.0900e-81.0231e-62.9898e-72.3902e-81.8848e-927.3348
EQUI GUHHZ9.0151e-71.7250e-78.6376e-84.4332e-82.3990e-83.5681e-64.1430e-73.0910e-84.5985e-935.3314
EQUI GUHHN1.2819e-61.9995e-71.0594e-75.3341e-84.1161e-84.2930e-64.3928e-73.9609e-84.4457e-935.3314
EQUI GUHHE1.1969e-61.5931e-71.1321e-76.1248e-83.1150e-82.9922e-65.9580e-73.1588e-83.9362e-935.3314
GSCL GUHHZ3.7502e-76.9281e-85.7439e-83.1671e-82.0373e-81.0773e-64.3392e-71.9744e-81.9442e-946.012
GSCL GUHHN1.2649e-63.2411e-73.0477e-71.1675e-75.0607e-83.0961e-61.7619e-66.4805e-81.1917e-846.012
GSCL GUHHE7.5954e-72.0806e-72.2014e-71.0162e-74.2231e-81.8228e-61.4074e-65.0837e-85.7661e-946.012
*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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