MANUAL Location - Area: Valdarno inferiore , magnitude (ML): 0.3
2026-03-01 23:07:17 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-03-02 08:59:54

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Earthquake info - Manual location
Event - ID :260301230652
Magnitude (ML) :0.3 +/- 0.2
Origin Time :2026-03-01 23:07:17.349 (UTC)
Location : Latitude: 43.856 N, Longitude: 10.423 E
Area :Valdarno inferiore
Depth (km) :4.98
Distances (km) : 6.8 --- Lucca
7.1 --- Massarosa
8.6 --- Vecchiano
10.3 --- San Giuliano Terme
12.1 --- Capannori
12.4 --- Pescaglia
13.4 --- Camaiore
14.0 --- Viareggio
15.5 --- Pisa
15.8 --- Fabbriche di Vallico
15.9 --- Porcari
16.1 --- Calci
17.0 --- Borgo a Mozzano
18.8 --- Stazzema
19.0 --- Pietrasanta
19.4 --- Buti
19.6 --- Villa Basilica
19.7 --- Montecarlo
20.9 --- Altopascio
21.2 --- Vicopisano

Quality location estimate: Erh: 1.3 km, Erz: 0.5 km, Nf: 20, Gap: 144 °, 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.
MAIMGU2026-03-01 23:07:20.0800.00600.380.612026-03-01 23:07:21.4300.0360-0.031.839.9
CMEIT2026-03-01 23:07:20.6180.0200-0.021.892026-03-01 23:07:23.1050.04000.021.8015.6
PIIIV2026-03-01 23:07:21.2500.00900.021.902026-03-01 23:07:23.3920.0400-0.740.0717.7
CARDGU2026-03-01 23:07:21.6600.01600.300.662026-03-01 23:07:24.4100.06610.071.5120.2
POPMGU2026-03-01 23:07:24.3200.01900.500.332026-03-01 23:07:28.8100.11230.121.2434.5
SARMGU2026-03-01 23:07:24.1750.0200-0.051.642026-03-01 23:07:29.8120.04000.470.5137.0
EQUIGU2026-03-01 23:07:24.9060.02000.031.742026-03-01 23:07:30.2700.1223-0.180.7941.0
PLMAIV2026-03-01 23:07:26.8740.02000.260.792026-03-01 23:07:33.5710.04000.101.2650.6
GSCLGU2026-03-01 23:07:28.1490.0200-0.091.262026-03-01 23:07:35.7050.1002-0.530.1856.8
ZCCAIV2026-03-01 23:07:32.3510.02001.350.002026-03-01 23:07:44.0570.04002.890.0070.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MAIM GUHH0.361.91e-19.941
CME ITHN0.481.25e-115.6318
PII IVHH0.053.68e-217.7151
CARD GUHH0.761.49e-120.214
POPM GUHH0.223.20e-234.552
SARM GUEH0.161.45e-237.0357
EQUI GUHH0.169.87e-341.0328
PLMA IVHH0.034.69e-350.6296
GSCL GUHH0.591.37e-256.813
ZCCA IVHH0.213.57e-370.839


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 GUHHZ2.5821e-52.6180e-68.1120e-73.1689e-71.4924e-73.9456e-54.1315e-62.6968e-75.5189e-89.941
MAIM GUHHN3.9180e-54.7318e-61.4390e-65.3145e-72.2780e-75.6689e-56.3921e-63.6848e-78.6970e-89.941
MAIM GUHHE6.2056e-55.6447e-61.1723e-63.5992e-71.6661e-75.3808e-55.1332e-63.6743e-71.2063e-79.941
CME ITHNZ7.1293e-61.1709e-66.1157e-72.4493e-71.3508e-71.1147e-53.7569e-61.9500e-72.8964e-815.6318
CME ITHNN1.0430e-51.8322e-61.2032e-63.5677e-71.8586e-72.8059e-56.4462e-62.8834e-75.0430e-815.6318
CME ITHNE1.0562e-51.7256e-68.3599e-72.8954e-71.3263e-71.9941e-53.9896e-62.0299e-74.3166e-815.6318
PII IVHHZ3.2496e-64.2365e-72.5321e-79.6326e-83.8971e-84.5584e-69.1337e-75.7058e-81.0103e-817.7151
PII IVHHN3.0771e-64.7803e-73.2239e-79.8530e-84.6469e-89.5027e-61.4227e-67.0732e-81.2069e-817.7151
PII IVHHE3.5230e-65.4331e-72.8797e-71.3145e-75.6618e-81.2114e-51.0176e-68.1617e-81.4682e-817.7151
CARD GUHHZ6.5979e-67.3475e-75.3732e-72.4789e-71.2440e-71.3977e-53.8101e-61.7365e-72.1746e-820.214
CARD GUHHN2.2537e-52.4123e-61.0686e-63.1730e-71.6761e-73.8203e-56.5134e-62.6315e-74.7516e-820.214
CARD GUHHE2.7748e-53.3784e-61.0906e-63.1046e-71.7010e-75.9531e-54.4240e-63.1705e-76.4883e-820.214
POPM GUHHZ1.8026e-62.4163e-71.4660e-74.0755e-81.8699e-83.3274e-66.9702e-72.9228e-85.6371e-934.552
POPM GUHHN2.8405e-66.0306e-73.0668e-75.9775e-83.5212e-85.9925e-61.0887e-66.3183e-81.2507e-834.552
POPM GUHHE1.9570e-64.0403e-72.5563e-76.6391e-82.9087e-84.9782e-61.1498e-64.6518e-89.7999e-934.552
SARM GUEHZ5.5322e-77.1223e-84.2338e-82.2820e-88.4918e-91.1621e-61.9684e-71.1694e-81.8549e-937.0357
SARM GUEHN9.7767e-71.1795e-77.5487e-88.7338e-85.4494e-81.5905e-63.5229e-78.0710e-84.3128e-937.0357
SARM GUEHE8.3630e-79.9643e-86.6021e-83.8237e-81.8653e-81.4083e-64.1904e-72.2715e-82.6263e-937.0357
EQUI GUHHZ7.7088e-71.4687e-77.4639e-82.7893e-81.3424e-83.5241e-63.5227e-71.9300e-83.1755e-941.0328
EQUI GUHHN1.6525e-62.1032e-78.8178e-82.3598e-81.5883e-85.4615e-63.4634e-72.7965e-84.6876e-941.0328
EQUI GUHHE9.2498e-71.5364e-77.3414e-86.1616e-84.0658e-82.2520e-62.8033e-73.7353e-83.8459e-941.0328
PLMA IVHHZ3.0823e-73.5573e-82.4351e-81.5468e-87.4189e-95.6056e-79.5917e-88.9707e-99.4311e-1050.6296
PLMA IVHHN4.1873e-75.7838e-84.4578e-82.5066e-81.3014e-81.0073e-61.7781e-71.3496e-81.5591e-950.6296
PLMA IVHHE3.9116e-74.8755e-83.6275e-82.1571e-81.5518e-87.9328e-71.7836e-71.9965e-81.3696e-950.6296
GSCL GUHHZ3.1700e-74.5227e-83.7098e-81.8965e-81.1430e-87.1167e-72.8234e-71.3420e-81.1719e-956.813
GSCL GUHHN5.4684e-71.5717e-71.1781e-75.2117e-81.7788e-81.8278e-67.0971e-72.6127e-83.8194e-956.813
GSCL GUHHE3.7783e-71.2501e-71.0053e-77.5959e-83.7361e-81.4613e-65.8752e-75.9133e-85.5344e-956.813
ZCCA IVHHZ1.9850e-72.0915e-81.7571e-81.0560e-85.7107e-93.3682e-76.9707e-89.0530e-98.6999e-1070.839
ZCCA IVHHN2.8580e-73.4580e-83.2358e-81.6157e-87.4790e-92.8295e-72.4355e-78.1174e-91.2730e-970.839
ZCCA IVHHE4.9226e-74.0177e-83.1414e-81.8888e-86.9847e-92.9379e-71.7394e-71.1586e-81.1869e-970.839
*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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