MANUAL Location - Area: Lunigiana , magnitude (ML): 1.8
2025-03-04 10:54:39 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-03-04 11:09:22

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Earthquake info - Manual location
Event - ID :250304105259
Magnitude (ML) :1.8 +/- 0.2
Origin Time :2025-03-04 10:54:39.206 (UTC)
Location : Latitude: 44.093 N, Longitude: 9.974 E
Area :Lunigiana
Depth (km) :6.17
Distances (km) : 2.4 --- Sarzana
3.0 --- Ameglia
3.6 --- Castelnuovo Magra
5.2 --- Lerici
5.7 --- Ortonovo
5.8 --- Arcola
6.1 --- Fosdinovo
8.6 --- Carrara
8.9 --- Santo Stefano di Magra
9.0 --- Vezzano Ligure
11.5 --- Portovenere
11.9 --- Follo
12.4 --- La Spezia
12.4 --- Bolano
13.2 --- Podenzana
13.5 --- Aulla
14.0 --- Massa
16.9 --- Tresana
18.1 --- Montignoso
18.1 --- Ricco del Golfo di Spezia

Quality location estimate: Erh: 0.9 km, Erz: 0.9 km, Nf: 40, Gap: 68 °, Rms: 0.34


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.
PLMAIV2025-03-04 10:54:41.9000.00700.011.532025-03-04 10:54:43.5200.0401-0.331.5012.4
FIVIGU2025-03-04 10:54:43.2240.0200-0.241.412025-03-04 10:54:45.5600.0400-0.960.4021.4
VLCMN2025-03-04 10:54:45.4320.02000.021.512025-03-04 10:54:49.7060.0400-0.321.4434.4
SARMGU2025-03-04 10:54:45.7100.0170-0.331.492025-03-04 10:54:50.0100.1033-1.120.3836.3
CARDGU2025-03-04 10:54:46.6700.02000.131.042025-03-04 10:54:51.5900.1223-0.401.2141.8
MSSAIV2025-03-04 10:54:46.9400.0231-0.421.222025-03-04 10:54:52.1200.1344-1.380.2444.6
GRAMGU2025-03-04 10:54:47.2800.0221-0.061.472025-03-04 10:54:53.0740.04000.111.1445.4
MAIMGU2025-03-04 10:54:47.6100.0231-0.041.482025-03-04 10:54:52.7800.1414-1.170.3646.4
BDIIV2025-03-04 10:54:48.0900.02410.051.402025-03-04 10:54:53.8220.1695-0.810.5550.4
ERBMIV2025-03-04 10:54:48.5300.0241-0.311.482025-03-04 10:54:55.3500.1464-0.710.6450.9
GSCLGU2025-03-04 10:54:49.4900.0271-0.490.962025-03-04 10:54:56.5040.1705-1.470.2057.1
PIIIV2025-03-04 10:54:49.9500.0301-0.121.472025-03-04 10:54:57.9950.1604-0.191.3560.7
POPMGU2025-03-04 10:54:50.2700.03110.170.932025-03-04 10:54:58.0500.1865-0.241.3063.1
GORRGU2025-03-04 10:54:52.7700.0401-0.141.492025-03-04 10:55:02.9140.2496-0.620.8579.0
RNCAGU2025-03-04 10:54:55.2600.04620.340.482025-03-04 10:55:05.7900.2777-0.221.1391.8
SEIIV2025-03-04 10:54:59.4120.12051.210.012025-03-04 10:55:12.5100.3297-0.060.99110.8
PCPGU2025-03-04 10:55:00.2500.06330.490.302025-03-04 10:55:14.2740.04000.160.92124.3
RUFIIV2025-03-04 10:55:00.9400.1346-0.131.332025-03-04 10:55:16.5040.0400-0.530.94126.2
MORSIFR2025-03-04 10:55:01.3600.1004-0.321.272025-03-04 10:55:16.7440.5009-1.340.37136.0
CANOGU2025-03-04 10:55:01.8140.1506-0.071.282025-03-04 10:55:17.1080.0400-0.950.55139.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
PLMA IVHH1.864.46e+012.4244
FIVI GUHN1.661.08e+021.437
VLC MNHH1.693.30e-134.477
CARD GUHH2.026.89e-141.8100
GRAM GUHH1.604.04e-145.49
MAIM GUHH1.461.36e-146.4116
BDI IVHH1.602.27e-150.494
ERBM IVEH1.682.11e-150.944
GSCL GUHH2.205.46e-157.159
PII IVHH1.611.26e-160.7133
POPM GUHH1.763.28e-163.195
GORR GUHH1.951.52e-179.0317
RNCA GUHH2.021.28e-191.8298
SEI IVHH2.261.43e-1110.892
PCP GUHH1.662.96e-2124.3294
CANO GUHH2.186.50e-2139.2276


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.
(°)
PLMA IVHHZ6.3485e-46.6852e-51.1450e-53.3515e-62.2276e-67.3373e-44.6279e-54.2256e-61.2313e-612.4244
PLMA IVHHN7.1964e-48.3842e-53.0941e-51.0364e-55.6170e-69.6519e-41.4187e-48.8695e-61.6599e-612.4244
PLMA IVHHE9.0942e-41.0760e-42.5753e-58.0080e-65.2666e-62.1079e-38.8473e-59.8012e-62.2924e-612.4244
FIVI GUHNZ3.3968e-43.2025e-58.1457e-62.2357e-61.2116e-63.8972e-42.8902e-51.8238e-64.2925e-721.437
FIVI GUHNN1.2769e-41.4918e-59.2250e-63.0696e-61.3084e-62.0134e-43.1665e-51.9602e-63.7680e-721.437
FIVI GUHNE9.4796e-51.5832e-58.9733e-62.6876e-61.4561e-63.1935e-45.5993e-52.2369e-63.8786e-721.437
VLC MNHHZ3.2022e-53.9699e-61.6492e-64.2536e-72.1088e-76.5412e-57.4498e-63.2486e-77.6426e-834.477
VLC MNHHN6.6675e-58.5149e-62.4757e-67.6346e-73.5280e-71.1696e-46.0965e-66.8324e-71.6296e-734.477
VLC MNHHE5.9132e-57.7457e-62.6624e-66.9019e-73.5935e-71.5030e-48.4765e-66.4590e-71.6711e-734.477
SARM GUEHZ2.1842e-53.1789e-61.6282e-65.4476e-72.5669e-74.8913e-59.7183e-63.6124e-76.2987e-836.373
SARM GUEHN4.8344e-54.1084e-62.2505e-69.2456e-74.0896e-75.8335e-51.2202e-55.5202e-77.9302e-836.373
SARM GUEHE2.6260e-53.0254e-61.8493e-67.7101e-73.5052e-74.1206e-51.2751e-55.0019e-76.6970e-836.373
CARD GUHHZ5.7774e-56.7305e-61.9517e-66.1411e-73.5516e-71.1863e-49.7199e-66.3426e-71.4156e-741.8100
CARD GUHHN1.1521e-41.5403e-54.7485e-61.0837e-66.4608e-73.0375e-41.5663e-51.1946e-63.2023e-741.8100
CARD GUHHE8.2624e-51.0838e-55.6419e-61.2192e-67.5706e-71.2272e-41.4407e-51.3528e-62.5800e-741.8100
MSSA IVHHZ8.3674e-61.3572e-65.8061e-72.2195e-71.1286e-71.6823e-52.7588e-61.5982e-72.9946e-844.6304
MSSA IVHHN1.2097e-51.5437e-68.6776e-73.0828e-71.2931e-72.8457e-52.6608e-61.8544e-73.2700e-844.6304
MSSA IVHHE8.7576e-61.5128e-68.8302e-72.6219e-71.2049e-72.1916e-54.4901e-61.7874e-73.4121e-844.6304
GRAM GUHHZ4.9569e-54.5963e-61.9081e-64.8783e-72.3416e-74.5565e-58.0114e-63.7040e-77.9568e-845.49
GRAM GUHHN2.4857e-55.1608e-63.5887e-61.4583e-64.9251e-76.4784e-51.5828e-57.6027e-71.2456e-745.49
GRAM GUHHE2.9987e-56.7438e-63.8105e-61.1510e-64.9529e-76.4023e-52.0415e-57.7762e-71.4603e-745.49
MAIM GUHHZ9.9145e-61.2546e-66.8431e-72.1219e-71.0159e-72.3532e-53.3417e-61.6738e-72.9954e-846.4116
MAIM GUHHN1.3087e-52.6221e-61.3776e-63.3404e-71.6280e-74.5272e-56.1495e-62.6024e-75.8667e-846.4116
MAIM GUHHE1.3087e-51.9215e-61.1250e-64.4075e-71.9580e-72.7557e-57.5736e-62.5843e-73.7493e-846.4116
BDI IVHHZ3.4793e-54.0205e-61.4069e-64.3430e-72.5181e-75.2099e-55.3428e-64.5245e-79.1104e-850.494
BDI IVHHN2.9342e-53.7726e-61.7329e-66.7061e-73.2045e-76.8308e-59.1656e-64.0205e-78.0609e-850.494
BDI IVHHE2.9617e-53.7893e-62.1092e-68.6676e-72.9885e-79.7996e-51.0553e-55.2568e-79.4183e-850.494
ERBM IVEHZ1.4113e-51.7556e-61.0029e-64.9571e-71.9926e-74.3153e-53.7424e-62.5968e-74.3010e-850.944
ERBM IVEHN1.3040e-52.7989e-62.0330e-65.5768e-73.0004e-73.9822e-58.0163e-64.5247e-77.3735e-850.944
ERBM IVEHE1.4153e-53.0039e-61.8112e-65.9268e-72.4825e-74.7609e-57.8382e-63.9476e-76.3772e-850.944
GSCL GUHHZ7.5753e-61.5426e-61.0961e-63.2028e-71.4071e-71.8730e-56.9760e-62.1388e-73.2993e-857.159
GSCL GUHHN1.5274e-53.6458e-63.2262e-68.3563e-73.9365e-73.1314e-52.2068e-56.0212e-71.0328e-757.159
GSCL GUHHE1.8367e-55.2955e-64.1880e-61.3164e-66.9433e-73.9280e-52.4059e-51.0333e-61.6043e-757.159
PII IVHHZ6.8626e-61.3923e-61.0862e-64.1664e-72.0026e-71.7636e-55.0774e-62.6540e-73.4601e-860.7133
PII IVHHN7.8706e-61.4703e-61.1459e-63.9315e-71.4626e-72.0961e-54.8631e-61.9470e-73.1106e-860.7133
PII IVHHE7.1402e-61.2409e-61.1750e-66.0841e-72.3736e-72.7256e-55.8167e-62.9431e-73.3608e-860.7133
POPM GUHHZ2.6168e-53.8452e-61.8395e-65.9897e-72.7773e-77.5087e-57.1765e-64.0522e-78.0354e-863.195
POPM GUHHN2.6090e-55.7193e-63.3977e-66.8422e-73.5675e-76.9841e-51.5085e-56.1115e-71.2847e-763.195
POPM GUHHE2.5067e-54.0108e-63.6828e-68.3377e-74.3257e-79.6035e-51.6868e-56.5223e-71.1113e-763.195
GORR GUHHZ9.6744e-62.1597e-61.3616e-64.9726e-72.2456e-72.1637e-57.6874e-62.9874e-75.0540e-879.0317
GORR GUHHN9.5964e-62.2837e-61.4059e-65.5803e-72.9439e-73.1457e-56.9827e-64.2140e-74.9230e-879.0317
GORR GUHHE1.0978e-51.8335e-61.5489e-65.5053e-72.3275e-73.8912e-59.2398e-62.9505e-74.3211e-879.0317
RNCA GUHHZ5.4136e-68.9128e-75.6701e-71.6795e-78.5454e-81.5010e-53.2815e-61.2894e-72.2595e-891.8298
RNCA GUHHN7.0537e-61.5260e-61.2601e-63.3373e-71.5765e-72.8046e-56.4780e-62.4092e-74.1924e-891.8298
RNCA GUHHE9.8284e-61.7086e-61.2429e-64.1184e-71.5553e-72.5820e-55.9265e-62.3860e-74.5163e-891.8298
SEI IVHHZ2.2455e-69.0547e-78.1255e-74.1775e-71.6985e-77.1738e-66.9208e-62.0386e-72.7878e-8110.892
SEI IVHHN2.8539e-69.7274e-71.0333e-68.8886e-72.6999e-79.3816e-65.4102e-63.0237e-73.2346e-8110.892
SEI IVHHE3.1146e-66.5495e-75.7086e-73.7236e-71.5391e-74.3992e-63.8739e-61.9554e-72.1184e-8110.892
PCP GUHHZ1.2641e-62.3101e-71.8305e-78.1231e-83.3714e-84.1441e-68.9883e-74.4120e-86.5624e-9124.3294
PCP GUHHN1.4675e-63.1394e-72.4375e-71.0800e-76.8571e-84.5314e-61.8566e-69.7112e-88.5657e-9124.3294
PCP GUHHE2.3983e-63.6914e-72.0826e-77.5191e-83.1476e-84.7105e-69.0215e-74.7429e-89.6821e-9124.3294
MORSIFRHHZ4.1790e-79.5883e-88.2000e-83.6906e-83.0325e-81.8992e-65.0494e-73.6646e-83.0197e-9136.0201
MORSIFRHHN4.2541e-79.3899e-88.1065e-83.1560e-81.7804e-81.4147e-65.1727e-73.0672e-82.8528e-9136.0201
MORSIFRHHE4.6398e-79.9751e-89.8871e-84.1278e-81.7635e-81.4607e-65.2081e-72.2180e-83.1697e-9136.0201
CANO GUHHZ2.8467e-63.5333e-72.6558e-79.1618e-85.6023e-87.0724e-61.6836e-61.0158e-71.2550e-8139.2276
CANO GUHHN2.5677e-64.9241e-75.7036e-72.8917e-79.5784e-85.9794e-63.4991e-61.2392e-71.7734e-8139.2276
CANO GUHHE1.8787e-63.9963e-73.4552e-71.3185e-79.1789e-83.8604e-62.9320e-61.2788e-71.1979e-8139.2276
*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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