MANUAL Location - Area: Alpi Apuane , magnitude (ML): 0.5
2025-03-23 07:28:03 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-03-24 10:04:31

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Earthquake info - Manual location
Event - ID :250323072736
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2025-03-23 07:28:03.396 (UTC)
Location : Latitude: 44.180 N, Longitude: 10.186 E
Area :Alpi Apuane
Depth (km) :3.48
Distances (km) : 2.0 --- Minucciano
2.7 --- Casola in Lunigiana
6.0 --- Giuncugnano
8.3 --- Fivizzano
9.0 --- Piazza al Serchio
10.6 --- Sillano
10.6 --- Vagli Sotto
12.1 --- Camporgiano
12.8 --- Careggine
12.9 --- San Romano in Garfagnana
13.4 --- Comano
14.1 --- Fosdinovo
14.9 --- Ortonovo
15.2 --- Licciana Nardi
16.0 --- Castelnuovo Magra
17.0 --- Villa Collemandina
17.1 --- Carrara
17.7 --- Aulla
17.8 --- Massa
17.8 --- Montignoso

Quality location estimate: Erh: 0.7 km, Erz: 0.7 km, Nf: 24, Gap: 86 °, 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.
EQUIGU2025-03-23 07:28:04.6600.0080-0.021.772025-03-23 07:28:05.1550.0400-0.440.304.9
FIVIGU2025-03-23 07:28:05.5220.02000.031.732025-03-23 07:28:06.9350.0400-0.031.679.0
VLCMN2025-03-23 07:28:06.9600.02000.210.732025-03-23 07:28:09.6320.06710.440.2716.6
SARMGU2025-03-23 07:28:07.3000.01500.041.652025-03-23 07:28:10.0600.0732-0.031.5117.8
CMEIT2025-03-23 07:28:09.0340.02000.220.702025-03-23 07:28:12.2080.0400-0.560.3027.0
CARDGU2025-03-23 07:28:08.9770.10040.031.462025-03-23 07:28:13.0680.04000.061.4529.4
ERBMIV2025-03-23 07:28:10.3110.02000.190.842025-03-23 07:28:15.1840.04000.061.3832.5
BDIIV2025-03-23 07:28:10.1700.0200-0.011.702025-03-23 07:28:15.0130.0400-0.141.0535.6
GRAMGU2025-03-23 07:28:10.6300.02510.510.222025-03-23 07:28:15.1350.13740.530.2736.2
GSCLGU2025-03-23 07:28:10.9540.1004-0.121.122025-03-23 07:28:16.1640.0400-0.540.3237.5
MAIMGU2025-03-23 07:28:10.6470.0200-0.051.572025-03-23 07:28:15.4750.0400-0.600.2738.6
POPMGU2025-03-23 07:28:12.0540.0200-0.230.552025-03-23 07:28:18.7920.0400-0.081.1848.1


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
EQUI GUHH0.326.58e-14.9240
FIVI GUHN0.675.10e-19.0325
VLC MNHH0.731.39e-116.698
SARM GUEH0.196.05e-217.888
CME ITHN0.789.15e-227.0160
CARD GUHH0.594.99e-229.4126
ERBM IVEH0.332.28e-232.534
BDI IVHH0.151.61e-235.6112
GRAM GUHH0.718.05e-236.2345
GSCL GUHH0.673.83e-237.559
MAIM GUHH0.753.85e-238.6140
POPM GUHH0.452.82e-248.1108


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 GUHHZ1.0233e-49.6733e-62.0327e-68.4700e-74.4206e-75.5286e-51.1639e-57.7877e-71.5629e-74.9240
EQUI GUHHN1.0687e-49.8365e-63.0201e-61.7457e-68.9374e-71.3730e-42.0151e-51.3435e-62.3095e-74.9240
EQUI GUHHE1.3560e-48.9007e-61.8354e-68.6595e-74.5295e-75.5453e-51.3094e-57.2287e-71.5313e-74.9240
FIVI GUHNZ5.6923e-58.4195e-63.8020e-61.1259e-65.5141e-71.3643e-41.4368e-58.8822e-71.9885e-79.0325
FIVI GUHNN3.6781e-56.7066e-64.3653e-61.3087e-67.3134e-77.9632e-52.1585e-51.1056e-61.7277e-79.0325
FIVI GUHNE3.1340e-54.9237e-63.6886e-61.7923e-61.0104e-68.3899e-51.7235e-51.4481e-62.0644e-79.0325
VLC MNHHZ2.0292e-52.4779e-66.7515e-71.8692e-71.0857e-74.2033e-51.9690e-62.2989e-75.3307e-816.698
VLC MNHHN2.0080e-53.3407e-69.4664e-72.3020e-71.4269e-77.1260e-53.3319e-62.7873e-77.0048e-816.698
VLC MNHHE1.9496e-52.8703e-68.9192e-72.0578e-71.1731e-75.7243e-53.3656e-62.2658e-76.0609e-816.698
SARM GUEHZ3.4653e-64.6535e-72.1756e-71.0137e-75.1361e-84.7849e-61.8538e-67.1049e-89.7689e-917.888
SARM GUEHN5.6533e-66.8025e-74.7538e-72.1641e-78.0033e-88.8558e-62.4421e-61.2409e-71.9549e-817.888
SARM GUEHE6.2773e-66.2904e-72.7769e-71.4532e-75.4053e-85.3086e-61.5366e-68.1883e-81.4768e-817.888
CME ITHNZ4.6989e-67.2630e-74.8792e-72.8377e-71.1879e-71.2264e-51.9378e-61.8749e-72.0253e-827.0160
CME ITHNN8.1802e-61.1901e-67.8825e-72.9506e-71.9325e-71.3486e-54.3800e-63.3487e-73.4291e-827.0160
CME ITHNE9.2875e-61.1500e-66.9582e-72.9071e-71.6496e-71.6292e-53.8993e-63.1414e-73.2104e-827.0160
CARD GUHHZ2.9610e-63.6596e-71.5743e-76.2383e-83.1711e-88.1927e-68.1053e-74.2032e-88.0936e-929.4126
CARD GUHHN6.1278e-66.7687e-73.5781e-79.6509e-85.0327e-81.2300e-51.3960e-68.0268e-81.5076e-829.4126
CARD GUHHE6.0795e-68.6648e-74.1222e-71.0046e-76.1782e-81.2540e-51.3104e-61.0380e-72.2177e-829.4126
ERBM IVEHZ9.4290e-72.1443e-71.0335e-78.3202e-88.1807e-82.8280e-65.1051e-71.2172e-71.8256e-832.534
ERBM IVEHN1.8867e-63.8785e-72.2747e-76.6294e-83.3134e-85.3596e-69.5974e-75.0950e-88.6934e-932.534
ERBM IVEHE1.4026e-62.4138e-71.6474e-75.8322e-84.4873e-86.0327e-61.1405e-66.3793e-87.0742e-932.534
BDI IVHHZ1.3820e-61.9580e-78.6653e-83.7282e-82.1949e-82.8031e-64.4258e-72.9761e-83.7361e-935.6112
BDI IVHHN2.1259e-63.0361e-71.3008e-74.9648e-82.9975e-86.9002e-65.2469e-75.6062e-86.4304e-935.6112
BDI IVHHE2.0025e-62.6595e-71.4454e-76.2122e-83.4805e-85.0019e-64.7489e-75.8611e-85.5239e-935.6112
GRAM GUHHZ7.7350e-67.6059e-72.9298e-78.0151e-84.2948e-87.0865e-69.8851e-77.4272e-81.0223e-836.2345
GRAM GUHHN5.8152e-61.0406e-67.7564e-72.3233e-71.0734e-71.2878e-54.1102e-61.6963e-72.6230e-836.2345
GRAM GUHHE3.6931e-67.8007e-76.7867e-72.1965e-71.0861e-71.0015e-53.8364e-61.7054e-72.1566e-836.2345
GSCL GUHHZ6.6194e-71.5894e-71.1580e-77.3748e-81.0410e-71.6612e-65.3319e-71.8587e-71.7208e-837.559
GSCL GUHHN1.0829e-63.2868e-73.1731e-71.1317e-75.4241e-83.3377e-62.3873e-67.6206e-89.7884e-937.559
GSCL GUHHE1.3011e-63.9209e-72.7653e-78.7042e-83.9654e-82.8779e-61.5762e-66.2502e-81.0164e-837.559
MAIM GUHHZ1.0299e-62.3603e-71.6221e-76.9996e-84.0473e-82.8860e-69.4752e-75.7621e-85.6865e-938.6140
MAIM GUHHN1.6462e-62.4485e-71.5103e-77.1061e-83.8582e-83.4504e-67.3856e-75.4947e-86.9007e-938.6140
MAIM GUHHE1.5552e-63.6953e-73.1067e-71.1955e-75.3942e-85.7896e-61.8432e-67.3269e-81.1372e-838.6140
POPM GUHHZ1.9319e-62.7601e-71.3705e-73.9391e-81.8251e-84.6296e-65.5210e-72.5514e-85.4927e-948.1108
POPM GUHHN2.1820e-64.5508e-72.9184e-77.7673e-83.3740e-87.7389e-61.0621e-65.2581e-89.6171e-948.1108
POPM GUHHE2.2464e-63.9218e-72.6022e-76.6129e-86.3030e-86.3481e-61.2104e-61.2269e-71.1488e-848.1108
*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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